diff --git a/.gn b/.gn
index dbcf136..c9ff4a8 100644
--- a/.gn
+++ b/.gn
@@ -63,8 +63,6 @@
 # their includes checked for proper dependencies when you run either
 # "gn check" or "gn gen --check".
 no_check_targets = [
-  "//chrome/test:unit_tests",
-  "//chrome/test:unit_tests__library",
   "//extensions/browser:*",  # 20 errors
   "//extensions:*",  # 75 errors
   "//headless:*",  # 167 errors
diff --git a/DEPS b/DEPS
index 9830a21..bacb7009 100644
--- a/DEPS
+++ b/DEPS
@@ -213,7 +213,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'ee2b79f9798a2f9b589f76751c0144c835e33b69',
+  'v8_revision': 'f79526a2cf0ca58164f0cb5be787b8d582b259a3',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
@@ -221,7 +221,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': '222a81cfaaf0be64e64fe1e8ec04753e287532fe',
+  'angle_revision': '88631e5061aa590e4485bb82d36c276d1dbc9451',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.
@@ -229,7 +229,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
-  'pdfium_revision': '67a8dda2c2aa682028b4687f094b2b78a4b62398',
+  'pdfium_revision': 'c2ff7477dae94b94de39d11b7bde23169ea8a306',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.
@@ -256,11 +256,11 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling NaCl
   # and whatever else without interference from each other.
-  'nacl_revision': '22fdaa1bcde11fcbc4b47d1b938add9cecac83d4',
+  'nacl_revision': '82ed3798eb10dbcb495f01fdabe74ce28c6f551d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling freetype
   # and whatever else without interference from each other.
-  'freetype_revision': '7833e308efec8caf5ce62855e9b27041ad2155ad',
+  'freetype_revision': '8336d53cff9f78bb48f1ba4aa670c1d8d81d1808',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling freetype
   # and whatever else without interference from each other.
@@ -280,7 +280,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
-  'catapult_revision': '2f46970950767a342195669166fc8768e9f24b1d',
+  'catapult_revision': '2a1d8a231ab8b12a50ee0b0272cf40d123cb3886',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.
@@ -288,7 +288,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling devtools-frontend
   # and whatever else without interference from each other.
-  'devtools_frontend_revision': '37858a9cec8b5dd5a02af9316d227c9ae7e6c4db',
+  'devtools_frontend_revision': 'ea3882b497da5f0e88b9ee8eada5d5e5e23ce64b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libprotobuf-mutator
   # and whatever else without interference from each other.
@@ -643,7 +643,7 @@
       'packages': [
         {
           'package': 'chromium/rts/model/linux-amd64',
-          'version': 'XV77VIGsRzSJHtWjNROSVWfks6it9uwpKWEivm8jQlQC',
+          'version': 'JOLv-RlqcZjJNfPJXk8XMO5awjVwiy_Wvq9A9WLZ56cC',
         },
       ],
       'dep_type': 'cipd',
@@ -654,7 +654,7 @@
       'packages': [
         {
           'package': 'chromium/rts/model/mac-amd64',
-          'version': 'XXJRzIGsgYdI5YzOTBXaH22ZHhp8m_mMWkTrVaapGmkC',
+          'version': 'LakZBaDAjWDEp7ynPe1PeaX1bP-UsflEw9W9DZ6KrLkC',
         },
       ],
       'dep_type': 'cipd',
@@ -665,7 +665,7 @@
       'packages': [
         {
           'package': 'chromium/rts/model/windows-amd64',
-          'version': 'Kv7IZ-a9Nc_tLUjjMSmCs_DdBjFx33olTDbh0b0ML3QC',
+          'version': 'Kje4iyaVulNAkIlM8ZjZSkcItQuqkwBDhkOr7wGBZb8C',
         },
       ],
       'dep_type': 'cipd',
@@ -946,7 +946,7 @@
   # Tools used when building Chrome for Chrome OS. This affects both the Simple
   # Chrome workflow, as well as the chromeos-chrome ebuild.
   'src/third_party/chromite': {
-      'url': Var('chromium_git') + '/chromiumos/chromite.git' + '@' + 'ab32be9f5abb982a53b035e1034e60ea8f3541f7',
+      'url': Var('chromium_git') + '/chromiumos/chromite.git' + '@' + '9ca209b26c40d8718a2cbd012f77b89fba61a6ff',
       'condition': 'checkout_chromeos',
   },
 
@@ -1352,7 +1352,7 @@
   },
 
   'src/third_party/perfetto':
-    Var('android_git') + '/platform/external/perfetto.git' + '@' + '9834c0b42685d73191ef86d127f4e283d8cb6277',
+    Var('android_git') + '/platform/external/perfetto.git' + '@' + '8d191d6395c49babd37720c1b258207927346419',
 
   'src/third_party/perl': {
       'url': Var('chromium_git') + '/chromium/deps/perl.git' + '@' + '6f3e5028eb65d0b4c5fdd792106ac4c84eee1eb3',
@@ -1441,7 +1441,7 @@
       'packages': [
           {
               'package': 'fuchsia/third_party/aemu/linux-amd64',
-              'version': 'KF0Sz0CG_sURJodN44_YMwy0VU9tagOFFB_3EDTux1kC'
+              'version': 'XSqCv80jM_M_v5sYf8LVksQaL1zsbc6Pp9y-6WBCkbsC'
           },
       ],
       'condition': 'host_os == "linux" and checkout_fuchsia',
@@ -1545,7 +1545,7 @@
   'src/third_party/usrsctp/usrsctplib':
     Var('chromium_git') + '/external/github.com/sctplab/usrsctp' + '@' + '22ba62ffe79c3881581ab430368bf3764d9533eb',
 
-  'src/third_party/vulkan-deps': '{chromium_git}/vulkan-deps@ddf3235b7621a2903cba288dc4c93ea4a5848747',
+  'src/third_party/vulkan-deps': '{chromium_git}/vulkan-deps@0edfab1c089761030fb5ded2859b7700bb44a07c',
 
   'src/third_party/vulkan_memory_allocator':
     Var('chromium_git') + '/external/github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.git' + '@' + 'f67d7fa397e83060b76a1ec53579116a0bbdff7a',
@@ -1584,7 +1584,7 @@
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + '8ab02d2228c649ba0e581f846a44674d1fb59ef1',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '13dac0c268854cfb0c0526b91298e74c77cc81ce',
+    Var('webrtc_git') + '/src.git' + '@' + '8b6929081e221836d675e736520646901498dcee',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),
@@ -1645,7 +1645,7 @@
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@469a9c6ef22d4ac086d2670080d12e62617ddd6e',
+    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@2d56561657c0a0c69c1f56e86fbf6a9bb1845c69',
     'condition': 'checkout_src_internal',
   },
 
@@ -2224,7 +2224,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine',
-              'version': 'version:2@2.8.0.cr0',
+              'version': 'version:2@2.8.8.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -2620,7 +2620,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation',
-              'version': 'version:2@2.4.0.cr0',
+              'version': 'version:2@2.7.1.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -2631,7 +2631,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations',
-              'version': 'version:2@2.4.0.cr0',
+              'version': 'version:2@2.7.1.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -2642,7 +2642,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api',
-              'version': 'version:2@2.4.0.cr0',
+              'version': 'version:2@2.7.1.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -2653,7 +2653,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_core',
-              'version': 'version:2@2.4.0.cr0',
+              'version': 'version:2@2.7.1.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -2664,7 +2664,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations',
-              'version': 'version:2@2.4.0.cr0',
+              'version': 'version:2@2.7.1.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -2935,6 +2935,17 @@
       'dep_type': 'cipd',
   },
 
+  'src/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils': {
+      'packages': [
+          {
+              'package': 'chromium/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils',
+              'version': 'version:2@4.0.cr0',
+          },
+      ],
+      'condition': 'checkout_android',
+      'dep_type': 'cipd',
+  },
+
   'src/third_party/android_deps/libs/javax_annotation_javax_annotation_api': {
       'packages': [
           {
@@ -3214,7 +3225,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/org_checkerframework_checker_qual',
-              'version': 'version:2@3.5.0.cr0',
+              'version': 'version:2@3.8.0.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -3225,7 +3236,7 @@
       'packages': [
           {
               'package': 'chromium/third_party/android_deps/libs/org_checkerframework_dataflow_shaded',
-              'version': 'version:2@3.1.2.cr0',
+              'version': 'version:2@3.11.0.cr0',
           },
       ],
       'condition': 'checkout_android',
@@ -3276,6 +3287,17 @@
       'dep_type': 'cipd',
   },
 
+  'src/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit': {
+      'packages': [
+          {
+              'package': 'chromium/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit',
+              'version': 'version:2@4.4.1.201607150455-r.cr0',
+          },
+      ],
+      'condition': 'checkout_android',
+      'dep_type': 'cipd',
+  },
+
   'src/third_party/android_deps/libs/org_jetbrains_annotations': {
       'packages': [
           {
@@ -3540,17 +3562,6 @@
       'dep_type': 'cipd',
   },
 
-  'src/third_party/android_deps/libs/org_threeten_threeten_extra': {
-      'packages': [
-          {
-              'package': 'chromium/third_party/android_deps/libs/org_threeten_threeten_extra',
-              'version': 'version:2@1.5.0.cr0',
-          },
-      ],
-      'condition': 'checkout_android',
-      'dep_type': 'cipd',
-  },
-
   # === ANDROID_DEPS Generated Code End ===
 
   'src/tools/resultdb': {
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 60f677dc..177927cb 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -1132,8 +1132,8 @@
     'build/android/gyp/prepare_resources.pydeps',
     'build/android/gyp/process_native_prebuilt.pydeps',
     'build/android/gyp/proguard.pydeps',
-    'build/android/gyp/resources_shrinker/shrinker.pydeps',
     'build/android/gyp/turbine.pydeps',
+    'build/android/gyp/unused_resources.pydeps',
     'build/android/gyp/validate_static_library_dex_references.pydeps',
     'build/android/gyp/write_build_config.pydeps',
     'build/android/gyp/write_native_libraries_java.pydeps',
diff --git a/ash/BUILD.gn b/ash/BUILD.gn
index 1bb122c9..c0c55957 100644
--- a/ash/BUILD.gn
+++ b/ash/BUILD.gn
@@ -26,6 +26,7 @@
     ":*",
     "//ash/app_list:*",
     "//chrome/test:browser_tests",
+    "//chrome/test:unit_tests",
     "//components/exo:*",
     "//components/exo/wayland:*",
   ]
@@ -2653,6 +2654,7 @@
     "//chrome/test:test_support",
     "//chrome/test:test_support_ui",
     "//chrome/test:test_support_unit",
+    "//chrome/test:unit_tests",
     "//components/exo:*",
     "//components/exo/wayland:*",
     "//ash/public/cpp/external_arc:*",
diff --git a/ash/accessibility/accessibility_controller_impl.cc b/ash/accessibility/accessibility_controller_impl.cc
index fc8a1a3a..65d85ca 100644
--- a/ash/accessibility/accessibility_controller_impl.cc
+++ b/ash/accessibility/accessibility_controller_impl.cc
@@ -56,6 +56,7 @@
 #include "components/prefs/pref_service.h"
 #include "ui/accessibility/accessibility_features.h"
 #include "ui/accessibility/accessibility_switches.h"
+#include "ui/accessibility/aura/aura_window_properties.h"
 #include "ui/aura/window.h"
 #include "ui/base/cursor/cursor_size.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -1350,6 +1351,22 @@
   ObservePrefs(prefs);
 }
 
+void AccessibilityControllerImpl::OnSessionStateChanged(
+    session_manager::SessionState state) {
+  // Everything behind the lock screen is in
+  // kShellWindowId_NonLockScreenContainersContainer. If the session state is
+  // changed to block the user session due to the lock screen or similar,
+  // everything in that window should be made invisible for accessibility.
+  // This keeps a11y features from being able to access parts of the tree
+  // that are visibly hidden behind the lock screen.
+  aura::Window* container =
+      Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                          kShellWindowId_NonLockScreenContainersContainer);
+  container->SetProperty(
+      ui::kAXConsiderInvisibleAndIgnoreChildren,
+      Shell::Get()->session_controller()->IsUserSessionBlocked());
+}
+
 AccessibilityEventRewriter*
 AccessibilityControllerImpl::GetAccessibilityEventRewriterForTest() {
   return accessibility_event_rewriter_;
@@ -1759,8 +1776,8 @@
     base::UmaHistogramEnumeration(uma_name, uma_value);
   }
 
-    accessibility_event_rewriter_->SetKeyCodesForSwitchAccessCommand(key_codes,
-                                                                     command);
+  accessibility_event_rewriter_->SetKeyCodesForSwitchAccessCommand(key_codes,
+                                                                   command);
 }
 
 void AccessibilityControllerImpl::UpdateSwitchAccessAutoScanEnabledFromPref() {
diff --git a/ash/accessibility/accessibility_controller_impl.h b/ash/accessibility/accessibility_controller_impl.h
index 7378c484..8e089dc0 100644
--- a/ash/accessibility/accessibility_controller_impl.h
+++ b/ash/accessibility/accessibility_controller_impl.h
@@ -402,6 +402,7 @@
   // SessionObserver:
   void OnSigninScreenPrefServiceInitialized(PrefService* prefs) override;
   void OnActiveUserPrefServiceChanged(PrefService* prefs) override;
+  void OnSessionStateChanged(session_manager::SessionState state) override;
 
   // Test helpers:
   AccessibilityEventRewriter* GetAccessibilityEventRewriterForTest();
diff --git a/ash/accessibility/accessibility_controller_unittest.cc b/ash/accessibility/accessibility_controller_unittest.cc
index 13496df..941687d4 100644
--- a/ash/accessibility/accessibility_controller_unittest.cc
+++ b/ash/accessibility/accessibility_controller_unittest.cc
@@ -24,6 +24,7 @@
 #include "chromeos/dbus/power/fake_power_manager_client.h"
 #include "components/prefs/pref_service.h"
 #include "components/prefs/testing_pref_service.h"
+#include "ui/accessibility/aura/aura_window_properties.h"
 #include "ui/message_center/message_center.h"
 
 using message_center::MessageCenter;
@@ -1202,4 +1203,31 @@
   EXPECT_TRUE(user_prefs->GetBoolean(kAccessibilitySwitchAccessEnabled));
 }
 
+TEST_P(AccessibilityControllerSigninTest,
+       UpdatesNonLoginWindowVisibilityOnLogin) {
+  aura::Window* container =
+      Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                          kShellWindowId_NonLockScreenContainersContainer);
+
+  BlockUserSession(BLOCKED_BY_LOCK_SCREEN);
+  EXPECT_TRUE(
+      container->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren));
+
+  UnblockUserSession();
+  EXPECT_FALSE(
+      container->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren));
+
+  BlockUserSession(BLOCKED_BY_LOGIN_SCREEN);
+  EXPECT_TRUE(
+      container->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren));
+
+  UnblockUserSession();
+  EXPECT_FALSE(
+      container->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren));
+
+  BlockUserSession(BLOCKED_BY_USER_ADDING_SCREEN);
+  EXPECT_TRUE(
+      container->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren));
+}
+
 }  // namespace ash
diff --git a/ash/app_list/app_list_presenter_unittest.cc b/ash/app_list/app_list_presenter_unittest.cc
index d546d79..92505111 100644
--- a/ash/app_list/app_list_presenter_unittest.cc
+++ b/ash/app_list/app_list_presenter_unittest.cc
@@ -389,7 +389,7 @@
   std::unique_ptr<test::AppsGridViewTestApi> apps_grid_test_api_;
   std::unique_ptr<test::AppListTestViewDelegate> app_list_test_delegate_;
   AppListView* app_list_view_ = nullptr;    // Owned by native widget.
-  AppsGridView* apps_grid_view_ = nullptr;  // Owned by |app_list_view_|.
+  PagedAppsGridView* apps_grid_view_ = nullptr;  // Owned by |app_list_view_|.
 
   base::test::ScopedFeatureList feature_list_;
 };
diff --git a/ash/app_list/views/apps_grid_view.cc b/ash/app_list/views/apps_grid_view.cc
index eacee1e..2651396 100644
--- a/ash/app_list/views/apps_grid_view.cc
+++ b/ash/app_list/views/apps_grid_view.cc
@@ -78,10 +78,6 @@
 constexpr base::TimeDelta kShelfHandleIconDragDelay =
     base::TimeDelta::FromMilliseconds(500);
 
-// Delay in milliseconds to do the page flip in fullscreen app list.
-constexpr base::TimeDelta kPageFlipDelay =
-    base::TimeDelta::FromMilliseconds(500);
-
 // The drag and drop proxy should get scaled by this factor.
 constexpr float kDragAndDropProxyScale = 1.2f;
 
@@ -263,8 +259,7 @@
                            AppsGridViewFolderDelegate* folder_delegate)
     : folder_delegate_(folder_delegate),
       contents_view_(contents_view),
-      app_list_view_delegate_(app_list_view_delegate),
-      page_flip_delay_(kPageFlipDelay) {
+      app_list_view_delegate_(app_list_view_delegate) {
   DCHECK(app_list_view_delegate_);
 }
 
@@ -521,15 +516,7 @@
   DropTargetRegion last_drop_target_region = drop_target_region_;
   UpdateDropTargetRegion();
 
-  MaybeStartPageFlipTimer(last_drag_point_);
-
-  if (cardified_state_) {
-    int hovered_page = GetPageFlipTargetForDrag(last_drag_point_);
-    if (hovered_page == -1)
-      hovered_page = pagination_model_.selected_page();
-
-    SetHighlightedBackgroundCard(hovered_page);
-  }
+  MaybeStartPageFlip();
 
   if (last_drop_target != drop_target_ ||
       last_drop_target_region != drop_target_region_) {
@@ -698,7 +685,7 @@
   // Hide the |current_ghost_view_| for item drag that started
   // within |apps_grid_view_|.
   BeginHideCurrentGhostImageView();
-  StopPageFlipTimer();
+  MaybeStopPageFlip();
   if (cardified_state_) {
     if (!reparented_into_folder) {
       // Temporarily set to cardified UI State so it animates back to its
@@ -719,11 +706,6 @@
   }
 }
 
-void AppsGridView::StopPageFlipTimer() {
-  page_flip_timer_.Stop();
-  page_flip_target_ = -1;
-}
-
 AppListItemView* AppsGridView::GetItemViewAt(int index) const {
   if (index < 0 || index >= view_model_.view_size())
     return nullptr;
@@ -1718,7 +1700,7 @@
   // Hide the |current_ghost_view_| after completed drag from within
   // folder to |apps_grid_view_|.
   BeginHideCurrentGhostImageView();
-  StopPageFlipTimer();
+  MaybeStopPageFlip();
 }
 
 void AppsGridView::EndDragForReparentInHiddenFolderGridView() {
@@ -1827,13 +1809,6 @@
   }
 }
 
-bool AppsGridView::FirePageFlipTimerForTest() {
-  if (!page_flip_timer_.IsRunning())
-    return false;
-  page_flip_timer_.FireNow();
-  return true;
-}
-
 bool AppsGridView::FireFolderItemReparentTimerForTest() {
   if (!folder_item_reparent_timer_.IsRunning())
     return false;
@@ -1914,45 +1889,10 @@
   if (should_host_start_drag && !host_drag_start_timer_.IsRunning()) {
     host_drag_start_timer_.Start(FROM_HERE, kShelfHandleIconDragDelay, this,
                                  &AppsGridView::OnHostDragStartTimerFired);
-    StopPageFlipTimer();
+    MaybeStopPageFlip();
   }
 }
 
-void AppsGridView::MaybeStartPageFlipTimer(const gfx::Point& drag_point) {
-  if (!IsPointWithinPageFlipBuffer(drag_point))
-    StopPageFlipTimer();
-  int new_page_flip_target = GetPageFlipTargetForDrag(drag_point);
-
-  if (new_page_flip_target == page_flip_target_)
-    return;
-
-  StopPageFlipTimer();
-  if (IsValidPageFlipTarget(new_page_flip_target)) {
-    page_flip_target_ = new_page_flip_target;
-
-    if (page_flip_target_ != pagination_model_.selected_page()) {
-      page_flip_timer_.Start(FROM_HERE, page_flip_delay_, this,
-                             &AppsGridView::OnPageFlipTimer);
-    }
-  }
-}
-
-void AppsGridView::OnPageFlipTimer() {
-  DCHECK(IsValidPageFlipTarget(page_flip_target_));
-
-  if (pagination_model_.total_pages() == page_flip_target_) {
-    // Create a new page because the user requests to put an item to a new page.
-    extra_page_opened_ = true;
-    pagination_model_.SetTotalPages(pagination_model_.total_pages() + 1);
-  }
-
-  pagination_model_.SelectPage(page_flip_target_, true);
-  if (!folder_delegate_)
-    RecordPageSwitcherSource(kDragAppToBorder, IsTabletMode());
-
-  BeginHideCurrentGhostImageView();
-}
-
 void AppsGridView::MoveItemInModel(AppListItemView* item_view,
                                    const GridIndex& target,
                                    bool clear_overflow) {
@@ -2284,27 +2224,6 @@
   return rect.Contains(point);
 }
 
-bool AppsGridView::IsPointWithinPageFlipBuffer(const gfx::Point& point) const {
-  // The page flip buffer is the work area bounds excluding shelf bounds, which
-  // is the same as AppsContainerView's bounds.
-  gfx::Point point_in_parent = point;
-  ConvertPointToTarget(this, parent(), &point_in_parent);
-  return parent()->GetContentsBounds().Contains(point_in_parent);
-}
-
-bool AppsGridView::IsPointWithinBottomDragBuffer(
-    const gfx::Point& point) const {
-  // The bottom drag buffer is between the bottom of apps grid and top of shelf.
-  gfx::Point point_in_parent = point;
-  ConvertPointToTarget(this, parent(), &point_in_parent);
-  gfx::Rect parent_rect = parent()->GetContentsBounds();
-  const int kBottomDragBufferMax = parent_rect.bottom();
-  const int kBottomDragBufferMin = bounds().bottom() - GetInsets().bottom() -
-                                   GetAppListConfig().page_flip_zone_size();
-  return point_in_parent.y() > kBottomDragBufferMin &&
-         point_in_parent.y() < kBottomDragBufferMax;
-}
-
 void AppsGridView::OnListItemAdded(size_t index, AppListItem* item) {
   EndDrag(true);
 
@@ -2733,17 +2652,6 @@
   return IsValidIndex(index);
 }
 
-bool AppsGridView::IsValidPageFlipTarget(int page) const {
-  if (pagination_model_.is_valid_page(page))
-    return true;
-
-  // If the user wants to drag an app to the next new page and has not done so
-  // during the dragging session, then it is the right target because a new page
-  // will be created in OnPageFlipTimer().
-  return !folder_delegate_ && !extra_page_opened_ &&
-         pagination_model_.total_pages() == page;
-}
-
 // TODO(crbug.com/1211608): Move to PagedAppsGridView.
 void AppsGridView::CalculateIdealBounds() {
   DCHECK(!folder_delegate_);
@@ -3065,30 +2973,4 @@
   }
 }
 
-int AppsGridView::GetPageFlipTargetForDrag(const gfx::Point& drag_point) {
-  int new_page_flip_target = -1;
-
-  // Drag zones are at the edges of the scroll axis.
-  if (IsScrollAxisVertical()) {
-    if (drag_point.y() <
-        GetAppListConfig().page_flip_zone_size() + GetInsets().top()) {
-      new_page_flip_target = pagination_model_.selected_page() - 1;
-    } else if (IsPointWithinBottomDragBuffer(drag_point)) {
-      // If the drag point is within the drag buffer, but not over the shelf.
-      new_page_flip_target = pagination_model_.selected_page() + 1;
-    }
-  } else {
-    // TODO(xiyuan): Fix this for RTL.
-    if (new_page_flip_target == -1 &&
-        drag_point.x() < GetAppListConfig().page_flip_zone_size())
-      new_page_flip_target = pagination_model_.selected_page() - 1;
-
-    if (new_page_flip_target == -1 &&
-        drag_point.x() > width() - GetAppListConfig().page_flip_zone_size()) {
-      new_page_flip_target = pagination_model_.selected_page() + 1;
-    }
-  }
-  return new_page_flip_target;
-}
-
 }  // namespace ash
diff --git a/ash/app_list/views/apps_grid_view.h b/ash/app_list/views/apps_grid_view.h
index 89c536ad..ca5d317 100644
--- a/ash/app_list/views/apps_grid_view.h
+++ b/ash/app_list/views/apps_grid_view.h
@@ -190,9 +190,6 @@
   // Returns true if a touch or click lies between two occupied tiles.
   bool EventIsBetweenOccupiedTiles(const ui::LocatedEvent* event);
 
-  // Stops the timer that triggers a page flip during a drag.
-  void StopPageFlipTimer();
-
   // Returns the item view of the item at |index|, or nullptr if there is no
   // view at |index|.
   AppListItemView* GetItemViewAt(int index) const;
@@ -293,7 +290,6 @@
 
   const AppListModel* model() const { return model_; }
 
-  bool FirePageFlipTimerForTest();
   bool FireFolderItemReparentTimerForTest();
   bool FireFolderDroppingTimerForTest();
   bool FireDragToShelfTimerForTest();
@@ -308,10 +304,6 @@
     return forward_events_to_drag_and_drop_host_;
   }
 
-  void set_page_flip_delay_for_testing(base::TimeDelta page_flip_delay) {
-    page_flip_delay_ = page_flip_delay;
-  }
-
   views::BoundsAnimator* bounds_animator_for_testing() {
     return bounds_animator_.get();
   }
@@ -346,9 +338,11 @@
   // Ends the "cardified" state if the subclass supports it.
   virtual void MaybeEndCardifiedView() {}
 
-  // TODO(crbug.com/1211608): Remove this method. It exists to allow this
-  // class to call into PagedAppsGridView from UpdateDrag().
-  virtual void SetHighlightedBackgroundCard(int new_highlighted_page) {}
+  // Starts a page flip if the subclass supports it.
+  virtual void MaybeStartPageFlip() {}
+
+  // Stops a page flip (by ending its timer) if the subclass supports it.
+  virtual void MaybeStopPageFlip() {}
 
   // Calculates the item views' bounds for non-folder.
   virtual void CalculateIdealBounds();
@@ -374,17 +368,12 @@
   // Cancels any context menus showing for app items on the current page.
   void CancelContextMenusOnCurrentPage();
 
-  // Returns true if the page is the right target to flip to.
-  bool IsValidPageFlipTarget(int page) const;
-
-  // Starts the page flip timer if |drag_point| is in left/right side page flip
-  // zone or is over page switcher.
-  void MaybeStartPageFlipTimer(const gfx::Point& drag_point);
-
   // views::BoundsAnimatorObserver:
   void OnBoundsAnimatorProgressed(views::BoundsAnimator* animator) override;
   void OnBoundsAnimatorDone(views::BoundsAnimator* animator) override;
 
+  void BeginHideCurrentGhostImageView();
+
   bool ignore_layout() const { return ignore_layout_; }
   views::BoundsAnimator* bounds_animator() { return bounds_animator_.get(); }
   views::View* items_container() { return items_container_; }
@@ -431,6 +420,11 @@
   int horizontal_tile_padding_ = 0;
   int vertical_tile_padding_ = 0;
 
+  // True if an extra page is opened after the user drags an app to the bottom
+  // of last page with intention to put it in a new page. This is only used for
+  // non-folder.
+  bool extra_page_opened_ = false;
+
  private:
   friend class test::AppsGridViewTestApi;
   friend class test::AppsGridViewTest;
@@ -517,9 +511,6 @@
   void DispatchDragEventToDragAndDropHost(
       const gfx::Point& location_in_screen_coordinates);
 
-  // Invoked when |page_flip_timer_| fires.
-  void OnPageFlipTimer();
-
   // Updates |model_| to move item represented by |item_view| to |target| slot.
   // Pushes all items from |item_view|'s GridIndex + 1 to |target| back by 1
   // GridIndex slot. |clear_overflow| is whether, if |target| is on a full page,
@@ -566,14 +557,6 @@
   // buffer area surrounding it that can trigger drop target change.
   bool IsPointWithinDragBuffer(const gfx::Point& point) const;
 
-  // Returns true if |point| lies within the bounds of this grid view plus a
-  // buffer area surrounding it that can trigger page flip.
-  bool IsPointWithinPageFlipBuffer(const gfx::Point& point) const;
-
-  // Returns whether |point| is in the bottom drag buffer, and not over the
-  // shelf.
-  bool IsPointWithinBottomDragBuffer(const gfx::Point& point) const;
-
   // Overridden from AppListItemListObserver:
   void OnListItemAdded(size_t index, AppListItem* item) override;
   void OnListItemRemoved(size_t index, AppListItem* item) override;
@@ -763,14 +746,9 @@
   // |current_ghost_view_| and |last_ghost_view_|.
   void CreateGhostImageView();
 
-  void BeginHideCurrentGhostImageView();
-
   // Invoked when |host_drag_start_timer_| fires.
   void OnHostDragStartTimerFired();
 
-  // Obtains the target page to flip for |drag_point|.
-  int GetPageFlipTargetForDrag(const gfx::Point& drag_point);
-
   AppListModel* model_ = nullptr;         // Owned by AppListView.
   AppListItemList* item_list_ = nullptr;  // Not owned.
 
@@ -848,12 +826,6 @@
   // Last mouse drag location in this view's coordinates.
   gfx::Point last_drag_point_;
 
-  // Timer to auto flip page when dragging an item near the left/right edges.
-  base::OneShotTimer page_flip_timer_;
-
-  // Target page to switch to when |page_flip_timer_| fires.
-  int page_flip_target_ = -1;
-
   // Used to animate individual icon positions.
   std::unique_ptr<views::BoundsAnimator> bounds_animator_;
 
@@ -870,18 +842,9 @@
   // True if the drag_view_ item is a folder item being dragged for reparenting.
   bool dragging_for_reparent_item_ = false;
 
-  // Delay for when |page_flip_timer_| should fire after user drags an item near
-  // the edge.
-  base::TimeDelta page_flip_delay_;
-
   // True if it is the end gesture from shelf dragging.
   bool is_end_gesture_ = false;
 
-  // True if an extra page is opened after the user drags an app to the bottom
-  // of last page with intention to put it in a new page. This is only used for
-  // non-folder.
-  bool extra_page_opened_ = false;
-
   // The drop location of the most recent reorder related accessibility event.
   GridIndex last_reorder_a11y_event_location_;
 
diff --git a/ash/app_list/views/apps_grid_view_test_api.cc b/ash/app_list/views/apps_grid_view_test_api.cc
index a64dbc9..80f77be3 100644
--- a/ash/app_list/views/apps_grid_view_test_api.cc
+++ b/ash/app_list/views/apps_grid_view_test_api.cc
@@ -55,7 +55,7 @@
 
 AppsGridViewTestApi::AppsGridViewTestApi(AppsGridView* view) : view_(view) {}
 
-AppsGridViewTestApi::~AppsGridViewTestApi() {}
+AppsGridViewTestApi::~AppsGridViewTestApi() = default;
 
 views::View* AppsGridViewTestApi::GetViewAtModelIndex(int index) const {
   return view_->view_model_.view_at(index);
@@ -86,11 +86,6 @@
       ui::KeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_RETURN, ui::EF_NONE));
 }
 
-bool AppsGridViewTestApi::HasPendingPageFlip() const {
-  return view_->page_flip_timer_.IsRunning() ||
-         view_->pagination_model()->has_transition();
-}
-
 int AppsGridViewTestApi::TilesPerPage() const {
   return view_->TilesPerPage();
 }
diff --git a/ash/app_list/views/apps_grid_view_test_api.h b/ash/app_list/views/apps_grid_view_test_api.h
index c016088..c2f9c4c 100644
--- a/ash/app_list/views/apps_grid_view_test_api.h
+++ b/ash/app_list/views/apps_grid_view_test_api.h
@@ -36,8 +36,6 @@
 
   void PressItemAt(int index);
 
-  bool HasPendingPageFlip() const;
-
   int TilesPerPage() const;
 
   int AppsOnPage(int page) const;
diff --git a/ash/app_list/views/apps_grid_view_unittest.cc b/ash/app_list/views/apps_grid_view_unittest.cc
index 61fed871f..3dcd3adf 100644
--- a/ash/app_list/views/apps_grid_view_unittest.cc
+++ b/ash/app_list/views/apps_grid_view_unittest.cc
@@ -287,13 +287,13 @@
         folder_apps_grid_view()->pagination_model());
     folder_apps_grid_view()->pagination_model()->SelectPage(target_page,
                                                             true /*animate*/);
-    while (folder_grid_test_api.HasPendingPageFlip()) {
+    while (HasPendingPageFlip(folder_apps_grid_view())) {
       page_flip_waiter.Wait();
     }
     folder_grid_test_api.LayoutToIdealBounds();
   }
 
-  void SetPageFlipDurationForTest(AppsGridView* apps_grid_view) {
+  void SetPageFlipDurationForTest(PagedAppsGridView* apps_grid_view) {
     apps_grid_view->set_page_flip_delay_for_testing(
         base::TimeDelta::FromMilliseconds(3));
     apps_grid_view->pagination_model()->SetTransitionDurations(
@@ -301,6 +301,11 @@
         base::TimeDelta::FromMilliseconds(1));
   }
 
+  bool HasPendingPageFlip(PagedAppsGridView* apps_grid_view) {
+    return apps_grid_view->page_flip_timer_.IsRunning() ||
+           apps_grid_view->pagination_model()->has_transition();
+  }
+
   const AppListConfig& GetAppListConfig() const {
     return contents_view_->GetAppListConfig();
   }
@@ -359,7 +364,7 @@
     return contents_view_->apps_container_view()->app_list_folder_view();
   }
 
-  AppsGridView* folder_apps_grid_view() const {
+  PagedAppsGridView* folder_apps_grid_view() const {
     return app_list_folder_view()->items_grid_view();
   }
 
@@ -574,7 +579,7 @@
     page_flip_waiter_->Reset();
     UpdateDrag(AppsGridView::MOUSE, point_in_page_flip_buffer, apps_grid_view_,
                /*steps=*/10);
-    while (test_api_->HasPendingPageFlip()) {
+    while (HasPendingPageFlip(apps_grid_view_)) {
       page_flip_waiter_->Wait();
     }
     EndDrag(apps_grid_view_, false /*cancel*/);
@@ -2363,7 +2368,7 @@
       gfx::Point(apps_grid_bounds.width() / 2, apps_grid_bounds.bottom() + 1);
   UpdateDrag(AppsGridView::MOUSE, apps_grid_bottom_center, apps_grid_view_,
              5 /*steps*/);
-  while (test_api_->HasPendingPageFlip()) {
+  while (HasPendingPageFlip(apps_grid_view_)) {
     page_flip_waiter_->Wait();
   }
 
@@ -2390,7 +2395,7 @@
                                   0);
   UpdateDrag(AppsGridView::MOUSE, apps_grid_top_center, apps_grid_view_,
              5 /*steps*/);
-  while (test_api_->HasPendingPageFlip()) {
+  while (HasPendingPageFlip(apps_grid_view_)) {
     page_flip_waiter_->Wait();
   }
 
@@ -2882,7 +2887,7 @@
   // For fullscreen, drag to the bottom/right of bounds.
   page_flip_waiter_->Reset();
   UpdateDrag(AppsGridView::MOUSE, to, apps_grid_view_);
-  while (test_api_->HasPendingPageFlip())
+  while (HasPendingPageFlip(apps_grid_view_))
     page_flip_waiter_->Wait();
   EndDrag(apps_grid_view_, false /*cancel*/);
 
diff --git a/ash/app_list/views/paged_apps_grid_view.cc b/ash/app_list/views/paged_apps_grid_view.cc
index d8853a3c..1f6425b 100644
--- a/ash/app_list/views/paged_apps_grid_view.cc
+++ b/ash/app_list/views/paged_apps_grid_view.cc
@@ -64,6 +64,10 @@
     "Apps.PaginationTransition.DragScroll.PresentationTime.MaxLatency."
     "TabletMode";
 
+// Delay in milliseconds to do the page flip in fullscreen app list.
+constexpr base::TimeDelta kPageFlipDelay =
+    base::TimeDelta::FromMilliseconds(500);
+
 // Vertical padding between the apps grid pages in cardified state.
 constexpr int kCardifiedPaddingBetweenPages = 12;
 
@@ -172,7 +176,8 @@
     : AppsGridView(contents_view,
                    contents_view->GetAppListMainView()->view_delegate(),
                    folder_delegate),
-      contents_view_(contents_view) {
+      contents_view_(contents_view),
+      page_flip_delay_(kPageFlipDelay) {
   DCHECK(contents_view_);
   pagination_model_.AddObserver(this);
 
@@ -519,6 +524,22 @@
     EndAppsGridCardifiedView();
 }
 
+void PagedAppsGridView::MaybeStartPageFlip() {
+  MaybeStartPageFlipTimer(last_drag_point());
+
+  if (cardified_state_) {
+    int hovered_page = GetPageFlipTargetForDrag(last_drag_point());
+    if (hovered_page == -1)
+      hovered_page = pagination_model_.selected_page();
+
+    SetHighlightedBackgroundCard(hovered_page);
+  }
+}
+
+void PagedAppsGridView::MaybeStopPageFlip() {
+  StopPageFlipTimer();
+}
+
 void PagedAppsGridView::OnAppListItemViewActivated(
     AppListItemView* pressed_item_view,
     const ui::Event& event) {
@@ -708,6 +729,13 @@
   RemoveAllBackgroundCards();
 }
 
+bool PagedAppsGridView::FirePageFlipTimerForTest() {
+  if (!page_flip_timer_.IsRunning())
+    return false;
+  page_flip_timer_.FireNow();
+  return true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // private:
 
@@ -756,6 +784,105 @@
   }
 }
 
+bool PagedAppsGridView::IsValidPageFlipTarget(int page) const {
+  if (pagination_model_.is_valid_page(page))
+    return true;
+
+  // If the user wants to drag an app to the next new page and has not done so
+  // during the dragging session, then it is the right target because a new page
+  // will be created in OnPageFlipTimer().
+  return !IsInFolder() && !extra_page_opened_ &&
+         pagination_model_.total_pages() == page;
+}
+
+bool PagedAppsGridView::IsPointWithinPageFlipBuffer(
+    const gfx::Point& point) const {
+  // The page flip buffer is the work area bounds excluding shelf bounds, which
+  // is the same as AppsContainerView's bounds.
+  gfx::Point point_in_parent = point;
+  ConvertPointToTarget(this, parent(), &point_in_parent);
+  return parent()->GetContentsBounds().Contains(point_in_parent);
+}
+
+bool PagedAppsGridView::IsPointWithinBottomDragBuffer(
+    const gfx::Point& point) const {
+  // The bottom drag buffer is between the bottom of apps grid and top of shelf.
+  gfx::Point point_in_parent = point;
+  ConvertPointToTarget(this, parent(), &point_in_parent);
+  gfx::Rect parent_rect = parent()->GetContentsBounds();
+  const int kBottomDragBufferMax = parent_rect.bottom();
+  const int kBottomDragBufferMin = bounds().bottom() - GetInsets().bottom() -
+                                   GetAppListConfig().page_flip_zone_size();
+  return point_in_parent.y() > kBottomDragBufferMin &&
+         point_in_parent.y() < kBottomDragBufferMax;
+}
+
+int PagedAppsGridView::GetPageFlipTargetForDrag(const gfx::Point& drag_point) {
+  int new_page_flip_target = -1;
+
+  // Drag zones are at the edges of the scroll axis.
+  if (IsScrollAxisVertical()) {
+    if (drag_point.y() <
+        GetAppListConfig().page_flip_zone_size() + GetInsets().top()) {
+      new_page_flip_target = pagination_model_.selected_page() - 1;
+    } else if (IsPointWithinBottomDragBuffer(drag_point)) {
+      // If the drag point is within the drag buffer, but not over the shelf.
+      new_page_flip_target = pagination_model_.selected_page() + 1;
+    }
+  } else {
+    // TODO(xiyuan): Fix this for RTL.
+    if (new_page_flip_target == -1 &&
+        drag_point.x() < GetAppListConfig().page_flip_zone_size())
+      new_page_flip_target = pagination_model_.selected_page() - 1;
+
+    if (new_page_flip_target == -1 &&
+        drag_point.x() > width() - GetAppListConfig().page_flip_zone_size()) {
+      new_page_flip_target = pagination_model_.selected_page() + 1;
+    }
+  }
+  return new_page_flip_target;
+}
+
+void PagedAppsGridView::MaybeStartPageFlipTimer(const gfx::Point& drag_point) {
+  if (!IsPointWithinPageFlipBuffer(drag_point))
+    StopPageFlipTimer();
+  int new_page_flip_target = GetPageFlipTargetForDrag(drag_point);
+
+  if (new_page_flip_target == page_flip_target_)
+    return;
+
+  StopPageFlipTimer();
+  if (IsValidPageFlipTarget(new_page_flip_target)) {
+    page_flip_target_ = new_page_flip_target;
+
+    if (page_flip_target_ != pagination_model_.selected_page()) {
+      page_flip_timer_.Start(FROM_HERE, page_flip_delay_, this,
+                             &PagedAppsGridView::OnPageFlipTimer);
+    }
+  }
+}
+
+void PagedAppsGridView::OnPageFlipTimer() {
+  DCHECK(IsValidPageFlipTarget(page_flip_target_));
+
+  if (pagination_model_.total_pages() == page_flip_target_) {
+    // Create a new page because the user requests to put an item to a new page.
+    extra_page_opened_ = true;
+    pagination_model_.SetTotalPages(pagination_model_.total_pages() + 1);
+  }
+
+  pagination_model_.SelectPage(page_flip_target_, true);
+  if (!IsInFolder())
+    RecordPageSwitcherSource(kDragAppToBorder, IsTabletMode());
+
+  BeginHideCurrentGhostImageView();
+}
+
+void PagedAppsGridView::StopPageFlipTimer() {
+  page_flip_timer_.Stop();
+  page_flip_target_ = -1;
+}
+
 void PagedAppsGridView::StartAppsGridCardifiedView() {
   if (!app_list_features::IsNewDragSpecInLauncherEnabled())
     return;
diff --git a/ash/app_list/views/paged_apps_grid_view.h b/ash/app_list/views/paged_apps_grid_view.h
index f4d402f..d7a144c 100644
--- a/ash/app_list/views/paged_apps_grid_view.h
+++ b/ash/app_list/views/paged_apps_grid_view.h
@@ -74,6 +74,8 @@
   bool IsScrollAxisVertical() const override;
   void MaybeStartCardifiedView() override;
   void MaybeEndCardifiedView() override;
+  void MaybeStartPageFlip() override;
+  void MaybeStopPageFlip() override;
 
   // AppListItemView::GridDelegate:
   void OnAppListItemViewActivated(AppListItemView* pressed_item_view,
@@ -92,10 +94,16 @@
   // ui::ImplicitAnimationObserver:
   void OnImplicitAnimationsCompleted() override;
 
+  bool FirePageFlipTimerForTest();
   bool cardified_state_for_testing() const { return cardified_state_; }
   int BackgroundCardCountForTesting() const { return background_cards_.size(); }
+  void set_page_flip_delay_for_testing(base::TimeDelta page_flip_delay) {
+    page_flip_delay_ = page_flip_delay;
+  }
 
  private:
+  friend class test::AppsGridViewTest;
+
   class FadeoutLayerDelegate;
 
   // Indicates whether the drag event (from the gesture or mouse) should be
@@ -107,6 +115,30 @@
   // "fade out" effect when dragging the whole page.
   void MaybeCreateGradientMask();
 
+  // Returns true if the page is the right target to flip to.
+  bool IsValidPageFlipTarget(int page) const;
+
+  // Returns true if |point| lies within the bounds of this grid view plus a
+  // buffer area surrounding it that can trigger page flip.
+  bool IsPointWithinPageFlipBuffer(const gfx::Point& point) const;
+
+  // Returns whether |point| is in the bottom drag buffer, and not over the
+  // shelf.
+  bool IsPointWithinBottomDragBuffer(const gfx::Point& point) const;
+
+  // Obtains the target page to flip for |drag_point|.
+  int GetPageFlipTargetForDrag(const gfx::Point& drag_point);
+
+  // Starts the page flip timer if |drag_point| is in left/right side page flip
+  // zone or is over page switcher.
+  void MaybeStartPageFlipTimer(const gfx::Point& drag_point);
+
+  // Invoked when |page_flip_timer_| fires.
+  void OnPageFlipTimer();
+
+  // Stops the timer that triggers a page flip during a drag.
+  void StopPageFlipTimer();
+
   // Helper functions to start the Apps Grid Cardified state.
   // The cardified state scales down apps and is shown when the user drags an
   // app in the AppList.
@@ -132,8 +164,7 @@
   // Removes all background cards from |background_cards_|.
   void RemoveAllBackgroundCards();
   // Updates the highlighted background card. Used only for cardified state.
-  // TODO(crbug.com/1211608): Remove "override" from this method.
-  void SetHighlightedBackgroundCard(int new_highlighted_page) override;
+  void SetHighlightedBackgroundCard(int new_highlighted_page);
 
   // Update the padding of tile view based on the contents bounds.
   void UpdateTilePadding();
@@ -144,6 +175,16 @@
   // Depends on |pagination_model_|.
   std::unique_ptr<PaginationController> pagination_controller_;
 
+  // Timer to auto flip page when dragging an item near the left/right edges.
+  base::OneShotTimer page_flip_timer_;
+
+  // Target page to switch to when |page_flip_timer_| fires.
+  int page_flip_target_ = -1;
+
+  // Delay for when |page_flip_timer_| should fire after user drags an item near
+  // the edge.
+  base::TimeDelta page_flip_delay_;
+
   // Whether the grid is in mouse drag. Used for between-item drags that move
   // the entire grid, not for app icon drags.
   bool is_in_mouse_drag_ = false;
diff --git a/ash/constants/ash_features.cc b/ash/constants/ash_features.cc
index cae1987..0a6b760 100644
--- a/ash/constants/ash_features.cc
+++ b/ash/constants/ash_features.cc
@@ -341,6 +341,11 @@
 const base::Feature kEnablePciguardUi{"EnablePciguardUi",
                                       base::FEATURE_ENABLED_BY_DEFAULT};
 
+// Enables showing notification after the password change for SAML users.
+const base::Feature kEnableSamlNotificationOnPasswordChangeSuccess{
+    "EnableSamlNotificationOnPasswordChangeSuccess",
+    base::FEATURE_ENABLED_BY_DEFAULT};
+
 // Enables SAML re-authentication on the lock screen once the sign-in time
 // limit expires.
 const base::Feature kEnableSamlReauthenticationOnLockscreen{
@@ -962,6 +967,11 @@
   return base::FeatureList::IsEnabled(kQuickAnswersTranslation);
 }
 
+bool IsSamlNotificationOnPasswordChangeSuccessEnabled() {
+  return base::FeatureList::IsEnabled(
+      kEnableSamlNotificationOnPasswordChangeSuccess);
+}
+
 bool IsSamlReauthenticationOnLockscreenEnabled() {
   return base::FeatureList::IsEnabled(kEnableSamlReauthenticationOnLockscreen);
 }
diff --git a/ash/constants/ash_features.h b/ash/constants/ash_features.h
index 6a6f76e..3b49666 100644
--- a/ash/constants/ash_features.h
+++ b/ash/constants/ash_features.h
@@ -145,6 +145,8 @@
 extern const base::Feature kEnableOobeChromeVoxHint;
 COMPONENT_EXPORT(ASH_CONSTANTS) extern const base::Feature kEnablePciguardUi;
 COMPONENT_EXPORT(ASH_CONSTANTS)
+extern const base::Feature kEnableSamlNotificationOnPasswordChangeSuccess;
+COMPONENT_EXPORT(ASH_CONSTANTS)
 extern const base::Feature kEnableSamlReauthenticationOnLockscreen;
 COMPONENT_EXPORT(ASH_CONSTANTS)
 extern const base::Feature kEolWarningNotifications;
@@ -350,6 +352,8 @@
 COMPONENT_EXPORT(ASH_CONSTANTS) bool IsQuickAnswersTranslationCloudAPIEnabled();
 COMPONENT_EXPORT(ASH_CONSTANTS) bool IsQuickAnswersTranslationEnabled();
 COMPONENT_EXPORT(ASH_CONSTANTS)
+bool IsSamlNotificationOnPasswordChangeSuccessEnabled();
+COMPONENT_EXPORT(ASH_CONSTANTS)
 bool IsSamlReauthenticationOnLockscreenEnabled();
 COMPONENT_EXPORT(ASH_CONSTANTS) bool IsShimlessRMAFlowEnabled();
 COMPONENT_EXPORT(ASH_CONSTANTS) bool IsSplitSettingsSyncEnabled();
diff --git a/ash/content/scanning/scanning_metrics_handler.cc b/ash/content/scanning/scanning_metrics_handler.cc
index 45910fa..51ee701e 100644
--- a/ash/content/scanning/scanning_metrics_handler.cc
+++ b/ash/content/scanning/scanning_metrics_handler.cc
@@ -110,7 +110,7 @@
   AllowJavascript();
 
   CHECK_EQ(1U, args->GetSize());
-  base::UmaHistogramCounts100("Scanning.NumCompletedScanScansInSession",
+  base::UmaHistogramCounts100("Scanning.NumCompletedScansInSession",
                               args->GetList()[0].GetInt());
 }
 
diff --git a/ash/display/cursor_window_controller_unittest.cc b/ash/display/cursor_window_controller_unittest.cc
index 7d8eb12a..d06ff880e 100644
--- a/ash/display/cursor_window_controller_unittest.cc
+++ b/ash/display/cursor_window_controller_unittest.cc
@@ -70,7 +70,6 @@
     // feature using it and is turned off.
     Shell::Get()->accessibility_controller()->high_contrast().SetEnabled(
         enabled);
-    Shell::Get()->UpdateCursorCompositingEnabled();
   }
 
   CursorWindowController* cursor_window_controller() {
@@ -203,12 +202,10 @@
 
   // Enable large cursor, cursor compositing should be enabled.
   prefs->SetBoolean(prefs::kAccessibilityLargeCursorEnabled, true);
-  Shell::Get()->UpdateCursorCompositingEnabled();
   EXPECT_TRUE(cursor_window_controller()->is_cursor_compositing_enabled());
 
   // Disable large cursor, cursor compositing should be disabled.
   prefs->SetBoolean(prefs::kAccessibilityLargeCursorEnabled, false);
-  Shell::Get()->UpdateCursorCompositingEnabled();
   EXPECT_FALSE(cursor_window_controller()->is_cursor_compositing_enabled());
 }
 
diff --git a/ash/public/cpp/shell_window_ids.h b/ash/public/cpp/shell_window_ids.h
index 5b2d238..430c190 100644
--- a/ash/public/cpp/shell_window_ids.h
+++ b/ash/public/cpp/shell_window_ids.h
@@ -32,7 +32,9 @@
 
   // A higher-level container that holds all of the containers stacked below
   // kShellWindowId_LockScreenContainer.  Only used by PowerButtonController for
-  // animating lower-level containers.
+  // animating lower-level containers and AccessibilityController for hiding
+  // non-lock screen windows from Accessibility when the user session is
+  // blocked.
   kShellWindowId_NonLockScreenContainersContainer,
 
   // A higher-level container that holds containers that hold lock-screen
diff --git a/ash/strings/ash_strings_ar.xtb b/ash/strings/ash_strings_ar.xtb
index f561719..23065de 100644
--- a/ash/strings/ash_strings_ar.xtb
+++ b/ash/strings/ash_strings_ar.xtb
@@ -317,6 +317,7 @@
 <translation id="3510164367642747937">تمييز مؤشر الماوس</translation>
 <translation id="3513798432020909783">يُدير <ph name="MANAGER_EMAIL" /> الحساب.</translation>
 <translation id="3552189655002856821">‏تم إيقاف شبكة Wi-Fi.</translation>
+<translation id="3560866052109807830">أدوات الرسم بأقلام التحديد</translation>
 <translation id="3563775809269155755">تفعيل نقطة الاتصال</translation>
 <translation id="3571734092741541777">إعداد</translation>
 <translation id="3573179567135747900">التغيير مرة أخرى إلى "<ph name="FROM_LOCALE" />" (يتطلب إعادة التشغيل)</translation>
@@ -411,6 +412,7 @@
 <translation id="4274537685965975248">‏تم تغيير اختصارات لوحة المفاتيح "Ctrl + Alt + السهم المتّجه للأسفل". لاستخدام مفتاح End، اضغط على المفتاحَين "<ph name="LAUNCHER_KEY_NAME" /> + السهم المتّجه لليمين".</translation>
 <translation id="4279490309300973883">النسخ المطابق</translation>
 <translation id="4285498937028063278">إزالة تثبيت</translation>
+<translation id="429402653707266969">تبديل مكان شريط الأدوات</translation>
 <translation id="4294319844246081198">صباح الخير <ph name="GIVEN_NAME" />،</translation>
 <translation id="4296136865091727875">محو جميع الإشعارات التي يبلغ عددها <ph name="COUNT" /></translation>
 <translation id="4302592941791324970">غير متوفّر</translation>
diff --git a/ash/strings/ash_strings_sq.xtb b/ash/strings/ash_strings_sq.xtb
index 85d7af60..6740868 100644
--- a/ash/strings/ash_strings_sq.xtb
+++ b/ash/strings/ash_strings_sq.xtb
@@ -317,6 +317,7 @@
 <translation id="3510164367642747937">Thekso kursorin e miut</translation>
 <translation id="3513798432020909783">Llogaria menaxhohet nga <ph name="MANAGER_EMAIL" /></translation>
 <translation id="3552189655002856821">Wi-Fi është çaktivizuar</translation>
+<translation id="3560866052109807830">Vegla vizatimi me piketë</translation>
 <translation id="3563775809269155755">Aktivizo zonën e qasjes për internet</translation>
 <translation id="3571734092741541777">Konfigurimi</translation>
 <translation id="3573179567135747900">Ndryshoje përsëri te "<ph name="FROM_LOCALE" />" (kërkohet rinisja)</translation>
@@ -411,6 +412,7 @@
 <translation id="4274537685965975248">Shkurtorja e tastierës për Alt + Shigjeta poshtë është ndryshuar. Për të përdorur tastin End, shtyp tastin <ph name="LAUNCHER_KEY_NAME" /> + Shigjeta djathtas.</translation>
 <translation id="4279490309300973883">Pasqyrim</translation>
 <translation id="4285498937028063278">Zhgozhdo</translation>
+<translation id="429402653707266969">Aktivizo/çaktivizo vendndodhjen e shiritit të veglave</translation>
 <translation id="4294319844246081198">Mirëmëngjesi <ph name="GIVEN_NAME" />,</translation>
 <translation id="4296136865091727875">Pastro të <ph name="COUNT" /> njoftimet</translation>
 <translation id="4302592941791324970">Nuk ofrohet</translation>
diff --git a/ash/system/night_light/night_light_controller_unittest.cc b/ash/system/night_light/night_light_controller_unittest.cc
index eb790fcf..4ef8b0c 100644
--- a/ash/system/night_light/night_light_controller_unittest.cc
+++ b/ash/system/night_light/night_light_controller_unittest.cc
@@ -1316,7 +1316,7 @@
     return Shell::Get()
         ->window_tree_host_manager()
         ->cursor_window_controller()
-        ->ShouldEnableCursorCompositing();
+        ->is_cursor_compositing_enabled();
   }
 
   std::string GetLoggerActionsAndClear() {
@@ -1401,13 +1401,11 @@
   for (const auto* const pref : {prefs::kAccessibilityLargeCursorEnabled,
                                  prefs::kAccessibilityHighContrastEnabled}) {
     user1_pref_service()->SetBoolean(pref, true);
-    Shell::Get()->UpdateCursorCompositingEnabled();
     EXPECT_TRUE(IsCursorCompositingEnabled());
 
     // Disabling the accessibility feature should revert back to the hardware
     // cursor.
     user1_pref_service()->SetBoolean(pref, false);
-    Shell::Get()->UpdateCursorCompositingEnabled();
     EXPECT_FALSE(IsCursorCompositingEnabled());
   }
 }
diff --git a/ash/utility/screenshot_controller_unittest.cc b/ash/utility/screenshot_controller_unittest.cc
index 2d5c15fb..a319f44d 100644
--- a/ash/utility/screenshot_controller_unittest.cc
+++ b/ash/utility/screenshot_controller_unittest.cc
@@ -4,6 +4,7 @@
 
 #include "ash/utility/screenshot_controller.h"
 
+#include "ash/accessibility/accessibility_controller_impl.h"
 #include "ash/display/cursor_window_controller.h"
 #include "ash/display/mirror_window_test_api.h"
 #include "ash/display/mouse_cursor_event_filter.h"
@@ -20,7 +21,6 @@
 #include "ui/aura/env.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/cursor/cursor.h"
-#include "ui/base/cursor/cursor_size.h"
 #include "ui/compositor/layer.h"
 #include "ui/display/types/display_constants.h"
 #include "ui/events/test/event_generator.h"
@@ -304,11 +304,7 @@
 // Make sure ScreenshotController doesn't prevent handling of large
 // cursor. See http://crbug.com/459214
 TEST_F(PartialScreenshotControllerTest, LargeCursor) {
-  Shell::Get()->cursor_manager()->SetCursorSize(ui::CursorSize::kLarge);
-  Shell::Get()
-      ->window_tree_host_manager()
-      ->cursor_window_controller()
-      ->SetCursorCompositingEnabled(true);
+  Shell::Get()->accessibility_controller()->large_cursor().SetEnabled(true);
 
   // Large cursor is represented as cursor window.
   MirrorWindowTestApi test_api;
diff --git a/ash/wallpaper/wallpaper_controller_unittest.cc b/ash/wallpaper/wallpaper_controller_unittest.cc
index 6f57cba..165f85d 100644
--- a/ash/wallpaper/wallpaper_controller_unittest.cc
+++ b/ash/wallpaper/wallpaper_controller_unittest.cc
@@ -62,6 +62,7 @@
 #include "ui/display/screen.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/codec/jpeg_codec.h"
+#include "ui/views/view_tracker.h"
 #include "ui/views/widget/widget.h"
 
 using ash::prefs::kWallpaperCollectionId;
@@ -2165,6 +2166,16 @@
   ASSERT_EQ(30, wallpaper_view->blur_sigma());
 }
 
+TEST_F(WallpaperControllerTest, DontLeakShieldView) {
+  SetSessionState(SessionState::LOCKED);
+  views::View* shield_view = wallpaper_view()->shield_view_for_testing();
+  ASSERT_TRUE(shield_view);
+  views::ViewTracker view_tracker(shield_view);
+  SetSessionState(SessionState::ACTIVE);
+  EXPECT_EQ(nullptr, wallpaper_view()->shield_view_for_testing());
+  EXPECT_EQ(nullptr, view_tracker.view());
+}
+
 TEST_F(WallpaperControllerTest, OnlyShowDevicePolicyWallpaperOnLoginScreen) {
   SetBypassDecode();
 
diff --git a/ash/wallpaper/wallpaper_view.cc b/ash/wallpaper/wallpaper_view.cc
index 5664138..43f159c 100644
--- a/ash/wallpaper/wallpaper_view.cc
+++ b/ash/wallpaper/wallpaper_view.cc
@@ -97,7 +97,7 @@
     shield_view_->SetBoundsRect(parent()->GetLocalBounds());
   } else {
     DCHECK(shield_view_);
-    parent()->RemoveChildView(shield_view_);
+    parent()->RemoveChildViewT(shield_view_);
     shield_view_ = nullptr;
   }
 }
diff --git a/ash/wallpaper/wallpaper_view.h b/ash/wallpaper/wallpaper_view.h
index 9da375a99..45153c4 100644
--- a/ash/wallpaper/wallpaper_view.h
+++ b/ash/wallpaper/wallpaper_view.h
@@ -32,6 +32,8 @@
   void set_blur_sigma(float blur_sigma) { blur_sigma_ = blur_sigma; }
   float blur_sigma() const { return blur_sigma_; }
 
+  views::View* shield_view_for_testing() { return shield_view_; }
+
  private:
   // views::View:
   const char* GetClassName() const override;
diff --git a/base/allocator/partition_allocator/partition_alloc.cc b/base/allocator/partition_allocator/partition_alloc.cc
index 9eaa5a3..637b60b 100644
--- a/base/allocator/partition_allocator/partition_alloc.cc
+++ b/base/allocator/partition_allocator/partition_alloc.cc
@@ -57,7 +57,7 @@
 
   // Check that some of our zanier calculations worked out as expected.
   static_assert(kSmallestBucket == kAlignment, "generic smallest bucket");
-  static_assert(kMaxBucketed == 983040, "generic max bucketed");
+  static_assert(kMaxBucketed == 917504, "generic max bucketed");
   STATIC_ASSERT_OR_PA_CHECK(
       MaxSystemPagesPerSlotSpan() < (1 << 8),
       "System pages per slot span must be less than 128.");
diff --git a/base/allocator/partition_allocator/partition_alloc_constants.h b/base/allocator/partition_allocator/partition_alloc_constants.h
index ef6af34c..51f56e3 100644
--- a/base/allocator/partition_allocator/partition_alloc_constants.h
+++ b/base/allocator/partition_allocator/partition_alloc_constants.h
@@ -259,9 +259,8 @@
 static const size_t kMaxBucketedOrder = 20;
 static const size_t kNumBucketedOrders =
     (kMaxBucketedOrder - kMinBucketedOrder) + 1;
-// Eight buckets per order (for the higher orders), e.g. order 8 is 128, 144,
-// 160, ..., 240:
-static const size_t kNumBucketsPerOrderBits = 3;
+// 4 buckets per order (for the higher orders).
+static const size_t kNumBucketsPerOrderBits = 2;
 static const size_t kNumBucketsPerOrder = 1 << kNumBucketsPerOrderBits;
 static const size_t kNumBuckets = kNumBucketedOrders * kNumBucketsPerOrder;
 static const size_t kSmallestBucket = 1 << (kMinBucketedOrder - 1);
diff --git a/base/allocator/partition_allocator/partition_alloc_unittest.cc b/base/allocator/partition_allocator/partition_alloc_unittest.cc
index 00febe3..4037af8 100644
--- a/base/allocator/partition_allocator/partition_alloc_unittest.cc
+++ b/base/allocator/partition_allocator/partition_alloc_unittest.cc
@@ -104,8 +104,7 @@
     100,
     base::SystemPageSize(),
     base::SystemPageSize() + 1,
-    base::kMaxBucketed,
-    base::kMaxBucketed + 1,
+    base::PartitionRoot<base::internal::ThreadSafe>::GetDirectMapSlotSize(100),
     1 << 20,
     1 << 21,
 };
@@ -792,92 +791,103 @@
 // Test the generic allocation functions can handle some specific sizes of
 // interest.
 TEST_F(PartitionAllocTest, AllocSizes) {
-  void* ptr = allocator.root()->Alloc(0, type_name);
-  EXPECT_TRUE(ptr);
-  allocator.root()->Free(ptr);
+  {
+    void* ptr = allocator.root()->Alloc(0, type_name);
+    EXPECT_TRUE(ptr);
+    allocator.root()->Free(ptr);
+  }
 
-  // PartitionPageSize() is interesting because it results in just one
-  // allocation per page, which tripped up some corner cases.
-  size_t size = PartitionPageSize() - kExtraAllocSize;
-  ptr = allocator.root()->Alloc(size, type_name);
-  EXPECT_TRUE(ptr);
-  void* ptr2 = allocator.root()->Alloc(size, type_name);
-  EXPECT_TRUE(ptr2);
-  allocator.root()->Free(ptr);
-  // Should be freeable at this point.
-  auto* slot_span = SlotSpan::FromSlotStartPtr(
-      allocator.root()->AdjustPointerForExtrasSubtract(ptr));
-  EXPECT_NE(-1, slot_span->empty_cache_index);
-  allocator.root()->Free(ptr2);
+  {
+    // PartitionPageSize() is interesting because it results in just one
+    // allocation per page, which tripped up some corner cases.
+    const size_t size = PartitionPageSize() - kExtraAllocSize;
+    void* ptr = allocator.root()->Alloc(size, type_name);
+    EXPECT_TRUE(ptr);
+    void* ptr2 = allocator.root()->Alloc(size, type_name);
+    EXPECT_TRUE(ptr2);
+    allocator.root()->Free(ptr);
+    // Should be freeable at this point.
+    auto* slot_span = SlotSpan::FromSlotStartPtr(
+        allocator.root()->AdjustPointerForExtrasSubtract(ptr));
+    EXPECT_NE(-1, slot_span->empty_cache_index);
+    allocator.root()->Free(ptr2);
+  }
 
-  size = (((PartitionPageSize() * kMaxPartitionPagesPerSlotSpan) -
-           SystemPageSize()) /
-          2) -
-         kExtraAllocSize;
-  ptr = allocator.root()->Alloc(size, type_name);
-  EXPECT_TRUE(ptr);
-  memset(ptr, 'A', size);
-  ptr2 = allocator.root()->Alloc(size, type_name);
-  EXPECT_TRUE(ptr2);
-  void* ptr3 = allocator.root()->Alloc(size, type_name);
-  EXPECT_TRUE(ptr3);
-  void* ptr4 = allocator.root()->Alloc(size, type_name);
-  EXPECT_TRUE(ptr4);
+  {
+    const size_t size =
+        (((PartitionPageSize() * kMaxPartitionPagesPerSlotSpan) -
+          SystemPageSize()) /
+         2) -
+        kExtraAllocSize;
+    void* ptr = allocator.root()->Alloc(size, type_name);
+    EXPECT_TRUE(ptr);
+    memset(ptr, 'A', size);
+    void* ptr2 = allocator.root()->Alloc(size, type_name);
+    EXPECT_TRUE(ptr2);
+    void* ptr3 = allocator.root()->Alloc(size, type_name);
+    EXPECT_TRUE(ptr3);
+    void* ptr4 = allocator.root()->Alloc(size, type_name);
+    EXPECT_TRUE(ptr4);
 
-  slot_span = SlotSpanMetadata<base::internal::ThreadSafe>::FromSlotStartPtr(
-      allocator.root()->AdjustPointerForExtrasSubtract(ptr));
-  auto* slot_span2 = SlotSpan::FromSlotStartPtr(
-      allocator.root()->AdjustPointerForExtrasSubtract(ptr3));
-  EXPECT_NE(slot_span, slot_span2);
+    auto* slot_span =
+        SlotSpanMetadata<base::internal::ThreadSafe>::FromSlotStartPtr(
+            allocator.root()->AdjustPointerForExtrasSubtract(ptr));
+    auto* slot_span2 = SlotSpan::FromSlotStartPtr(
+        allocator.root()->AdjustPointerForExtrasSubtract(ptr3));
+    EXPECT_NE(slot_span, slot_span2);
 
-  allocator.root()->Free(ptr);
-  allocator.root()->Free(ptr3);
-  allocator.root()->Free(ptr2);
-  // Should be freeable at this point.
-  EXPECT_NE(-1, slot_span->empty_cache_index);
-  EXPECT_EQ(0, slot_span->num_allocated_slots);
-  EXPECT_EQ(0, slot_span->num_unprovisioned_slots);
-  void* new_ptr = allocator.root()->Alloc(size, type_name);
-  EXPECT_EQ(ptr3, new_ptr);
-  new_ptr = allocator.root()->Alloc(size, type_name);
-  EXPECT_EQ(ptr2, new_ptr);
+    allocator.root()->Free(ptr);
+    allocator.root()->Free(ptr3);
+    allocator.root()->Free(ptr2);
+    // Should be freeable at this point.
+    EXPECT_NE(-1, slot_span->empty_cache_index);
+    EXPECT_EQ(0, slot_span->num_allocated_slots);
+    EXPECT_EQ(0, slot_span->num_unprovisioned_slots);
+    void* new_ptr_1 = allocator.root()->Alloc(size, type_name);
+    EXPECT_EQ(ptr2, new_ptr_1);
+    void* new_ptr_2 = allocator.root()->Alloc(size, type_name);
+    EXPECT_EQ(ptr3, new_ptr_2);
 
-  allocator.root()->Free(new_ptr);
-  allocator.root()->Free(ptr3);
-  allocator.root()->Free(ptr4);
+    allocator.root()->Free(new_ptr_1);
+    allocator.root()->Free(new_ptr_2);
+    allocator.root()->Free(ptr4);
 
 #if EXPENSIVE_DCHECKS_ARE_ON()
-  // |SlotSpanMetadata::Free| must poison the slot's contents with |kFreedByte|.
-  EXPECT_EQ(kFreedByte,
-            *(reinterpret_cast<unsigned char*>(new_ptr) + (size - 1)));
+    // |SlotSpanMetadata::Free| must poison the slot's contents with
+    // |kFreedByte|.
+    EXPECT_EQ(kFreedByte,
+              *(reinterpret_cast<unsigned char*>(new_ptr_1) + (size - 1)));
 #endif
+  }
 
   // Can we allocate a massive (512MB) size?
   // Allocate 512MB, but +1, to test for cookie writing alignment issues.
   // Test this only if the device has enough memory or it might fail due
   // to OOM.
   if (IsLargeMemoryDevice()) {
-    ptr = allocator.root()->Alloc(512 * 1024 * 1024 + 1, type_name);
+    void* ptr = allocator.root()->Alloc(512 * 1024 * 1024 + 1, type_name);
     allocator.root()->Free(ptr);
   }
 
-  // Check a more reasonable, but still direct mapped, size.
-  // Chop a system page and a byte off to test for rounding errors.
-  size = 20 * 1024 * 1024;
-  size -= SystemPageSize();
-  size -= 1;
-  ptr = allocator.root()->Alloc(size, type_name);
-  char* char_ptr = reinterpret_cast<char*>(ptr);
-  *(char_ptr + (size - 1)) = 'A';
-  allocator.root()->Free(ptr);
+  {
+    // Check a more reasonable, but still direct mapped, size.
+    // Chop a system page and a byte off to test for rounding errors.
+    size_t size = 20 * 1024 * 1024;
+    size -= SystemPageSize();
+    size -= 1;
+    void* ptr = allocator.root()->Alloc(size, type_name);
+    char* char_ptr = reinterpret_cast<char*>(ptr);
+    *(char_ptr + (size - 1)) = 'A';
+    allocator.root()->Free(ptr);
 
-  // Can we free null?
-  allocator.root()->Free(nullptr);
+    // Can we free null?
+    allocator.root()->Free(nullptr);
 
-  // Do we correctly get a null for a failed allocation?
-  EXPECT_EQ(nullptr,
-            allocator.root()->AllocFlags(PartitionAllocReturnNull,
-                                         3u * 1024 * 1024 * 1024, type_name));
+    // Do we correctly get a null for a failed allocation?
+    EXPECT_EQ(nullptr,
+              allocator.root()->AllocFlags(PartitionAllocReturnNull,
+                                           3u * 1024 * 1024 * 1024, type_name));
+  }
 }
 
 // Test that we can fetch the real allocated size after an allocation.
@@ -1111,12 +1121,13 @@
   size_t actual_capacity = allocator.root()->AllocationCapacityFromPtr(ptr);
   ptr2 = allocator.root()->Realloc(ptr, size - SystemPageSize(), type_name);
   EXPECT_EQ(ptr, ptr2);
-  // While pages may have been decommitted, the capacity shouldn't change.
-  EXPECT_EQ(actual_capacity, allocator.root()->AllocationCapacityFromPtr(ptr2));
+  EXPECT_EQ(actual_capacity - SystemPageSize(),
+            allocator.root()->AllocationCapacityFromPtr(ptr2));
   void* ptr3 =
       allocator.root()->Realloc(ptr2, size - 32 * SystemPageSize(), type_name);
   EXPECT_EQ(ptr2, ptr3);
-  EXPECT_EQ(actual_capacity, allocator.root()->AllocationCapacityFromPtr(ptr3));
+  EXPECT_EQ(actual_capacity - 32 * SystemPageSize(),
+            allocator.root()->AllocationCapacityFromPtr(ptr3));
 
   // Test that a previously in-place shrunk direct mapped allocation can be
   // expanded up again up to its original size.
@@ -1157,13 +1168,12 @@
     void* ptr2 =
         allocator.root()->Realloc(ptr, size - SystemPageSize(), type_name);
     EXPECT_EQ(ptr, ptr2);
-    // While pages may have been decommitted, the capacity shouldn't change.
-    EXPECT_EQ(actual_capacity,
+    EXPECT_EQ(actual_capacity - SystemPageSize(),
               allocator.root()->AllocationCapacityFromPtr(ptr2));
     void* ptr3 = allocator.root()->Realloc(ptr2, size - 32 * SystemPageSize(),
                                            type_name);
     EXPECT_EQ(ptr2, ptr3);
-    EXPECT_EQ(actual_capacity,
+    EXPECT_EQ(actual_capacity - 32 * SystemPageSize(),
               allocator.root()->AllocationCapacityFromPtr(ptr3));
 
     // Test that a previously in-place shrunk direct mapped allocation can be
@@ -1296,22 +1306,23 @@
   total_slots =
       (slot_span->bucket->num_system_pages_per_slot_span * SystemPageSize()) /
       bucket->slot_size;
-  EXPECT_EQ(16u, total_slots);
+  const size_t expected_slots = kNumBucketsPerOrderBits == 3 ? 16u : 24u;
+  EXPECT_EQ(expected_slots, total_slots);
   EXPECT_FALSE(slot_span->freelist_head);
   EXPECT_EQ(1, slot_span->num_allocated_slots);
-  EXPECT_EQ(15, slot_span->num_unprovisioned_slots);
+  EXPECT_EQ(expected_slots - 1, slot_span->num_unprovisioned_slots);
 
   ptr2 = allocator.root()->Alloc(non_dividing_size, type_name);
   EXPECT_TRUE(ptr2);
   EXPECT_TRUE(slot_span->freelist_head);
   EXPECT_EQ(2, slot_span->num_allocated_slots);
-  EXPECT_EQ(13, slot_span->num_unprovisioned_slots);
+  EXPECT_EQ(expected_slots - 3, slot_span->num_unprovisioned_slots);
 
   ptr3 = allocator.root()->Alloc(non_dividing_size, type_name);
   EXPECT_TRUE(ptr3);
   EXPECT_FALSE(slot_span->freelist_head);
   EXPECT_EQ(3, slot_span->num_allocated_slots);
-  EXPECT_EQ(13, slot_span->num_unprovisioned_slots);
+  EXPECT_EQ(expected_slots - 3, slot_span->num_unprovisioned_slots);
 
   allocator.root()->Free(ptr);
   allocator.root()->Free(ptr2);
@@ -2038,16 +2049,10 @@
   {
     size_t size_smaller = kMaxBucketed + 1;
     size_t size_bigger = (kMaxBucketed * 2) + 1;
-    size_t raw_size_smaller =
-        allocator.root()->AdjustSizeForExtrasAdd(size_smaller);
-    size_t raw_size_bigger =
-        allocator.root()->AdjustSizeForExtrasAdd(size_bigger);
-    size_t bucket_size_smaller =
-        allocator.root()->GetDirectMapReservationSize(raw_size_smaller) -
-        allocator.root()->GetDirectMapMetadataAndGuardPagesSize();
-    size_t bucket_size_bigger =
-        allocator.root()->GetDirectMapReservationSize(raw_size_bigger) -
-        allocator.root()->GetDirectMapMetadataAndGuardPagesSize();
+    size_t real_size_smaller =
+        (size_smaller + SystemPageOffsetMask()) & SystemPageBaseMask();
+    size_t real_size_bigger =
+        (size_bigger + SystemPageOffsetMask()) & SystemPageBaseMask();
     void* ptr = allocator.root()->Alloc(size_smaller, type_name);
     void* ptr2 = allocator.root()->Alloc(size_bigger, type_name);
 
@@ -2058,13 +2063,13 @@
       EXPECT_TRUE(dumper.IsMemoryAllocationRecorded());
 
       const PartitionBucketMemoryStats* stats =
-          dumper.GetBucketStats(bucket_size_smaller);
+          dumper.GetBucketStats(real_size_smaller);
       EXPECT_TRUE(stats);
       EXPECT_TRUE(stats->is_valid);
       EXPECT_TRUE(stats->is_direct_map);
-      EXPECT_EQ(bucket_size_smaller, stats->bucket_slot_size);
-      EXPECT_EQ(bucket_size_smaller, stats->active_bytes);
-      EXPECT_EQ(bucket_size_smaller, stats->resident_bytes);
+      EXPECT_EQ(real_size_smaller, stats->bucket_slot_size);
+      EXPECT_EQ(real_size_smaller, stats->active_bytes);
+      EXPECT_EQ(real_size_smaller, stats->resident_bytes);
       EXPECT_EQ(0u, stats->decommittable_bytes);
       EXPECT_EQ(0u, stats->discardable_bytes);
       EXPECT_EQ(1u, stats->num_full_slot_spans);
@@ -2072,13 +2077,13 @@
       EXPECT_EQ(0u, stats->num_empty_slot_spans);
       EXPECT_EQ(0u, stats->num_decommitted_slot_spans);
 
-      stats = dumper.GetBucketStats(bucket_size_bigger);
+      stats = dumper.GetBucketStats(real_size_bigger);
       EXPECT_TRUE(stats);
       EXPECT_TRUE(stats->is_valid);
       EXPECT_TRUE(stats->is_direct_map);
-      EXPECT_EQ(bucket_size_bigger, stats->bucket_slot_size);
-      EXPECT_EQ(bucket_size_bigger, stats->active_bytes);
-      EXPECT_EQ(bucket_size_bigger, stats->resident_bytes);
+      EXPECT_EQ(real_size_bigger, stats->bucket_slot_size);
+      EXPECT_EQ(real_size_bigger, stats->active_bytes);
+      EXPECT_EQ(real_size_bigger, stats->resident_bytes);
       EXPECT_EQ(0u, stats->decommittable_bytes);
       EXPECT_EQ(0u, stats->discardable_bytes);
       EXPECT_EQ(1u, stats->num_full_slot_spans);
@@ -2113,14 +2118,14 @@
           requested_size + (requested_size / kNumBucketsPerOrder);
       const PartitionBucketMemoryStats* stats =
           dumper.GetBucketStats(slot_size);
-      EXPECT_TRUE(stats);
+      ASSERT_TRUE(stats);
       EXPECT_TRUE(stats->is_valid);
       EXPECT_FALSE(stats->is_direct_map);
       EXPECT_EQ(slot_size, stats->bucket_slot_size);
       EXPECT_EQ(requested_size + 1 + kExtraAllocSize, stats->active_bytes);
       EXPECT_EQ(slot_size, stats->resident_bytes);
       EXPECT_EQ(0u, stats->decommittable_bytes);
-      EXPECT_EQ(SystemPageSize(), stats->discardable_bytes);
+      EXPECT_EQ(3 * SystemPageSize(), stats->discardable_bytes);
       EXPECT_EQ(1u, stats->num_full_slot_spans);
       EXPECT_EQ(0u, stats->num_active_slot_spans);
       EXPECT_EQ(0u, stats->num_empty_slot_spans);
@@ -2174,7 +2179,7 @@
                 stats->active_bytes);
       EXPECT_EQ(slot_size, stats->resident_bytes);
       EXPECT_EQ(0u, stats->decommittable_bytes);
-      EXPECT_EQ(0u, stats->discardable_bytes);
+      EXPECT_EQ(2 * SystemPageSize(), stats->discardable_bytes);
       EXPECT_EQ(1u, stats->num_full_slot_spans);
       EXPECT_EQ(0u, stats->num_active_slot_spans);
       EXPECT_EQ(0u, stats->num_empty_slot_spans);
@@ -2351,7 +2356,7 @@
 }
 
 TEST_F(PartitionAllocTest, PurgeDiscardableNonPageSizedAlloc) {
-  const size_t requested_size = 2.25 * SystemPageSize();
+  const size_t requested_size = 2.5 * SystemPageSize();
   char* ptr1 = reinterpret_cast<char*>(
       allocator.root()->Alloc(requested_size - kExtraAllocSize, type_name));
   void* ptr2 =
@@ -2375,9 +2380,9 @@
     EXPECT_TRUE(stats);
     EXPECT_TRUE(stats->is_valid);
     EXPECT_EQ(0u, stats->decommittable_bytes);
-    EXPECT_EQ(2 * SystemPageSize(), stats->discardable_bytes);
+    EXPECT_EQ(3 * SystemPageSize(), stats->discardable_bytes);
     EXPECT_EQ(requested_size * 2, stats->active_bytes);
-    EXPECT_EQ(9 * SystemPageSize(), stats->resident_bytes);
+    EXPECT_EQ(10 * SystemPageSize(), stats->resident_bytes);
   }
   CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset, true);
   CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset + SystemPageSize(), true);
@@ -2389,7 +2394,7 @@
   CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset + SystemPageSize(), false);
   CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset + (SystemPageSize() * 2), true);
   CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset + (SystemPageSize() * 3), false);
-  CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset + (SystemPageSize() * 4), true);
+  CHECK_PAGE_IN_CORE(ptr1 - kPointerOffset + (SystemPageSize() * 4), false);
 
   allocator.root()->Free(ptr3);
   allocator.root()->Free(ptr4);
diff --git a/base/allocator/partition_allocator/partition_bucket.cc b/base/allocator/partition_allocator/partition_bucket.cc
index ef5df94..18878789 100644
--- a/base/allocator/partition_allocator/partition_bucket.cc
+++ b/base/allocator/partition_allocator/partition_bucket.cc
@@ -207,20 +207,8 @@
     // small ones (e.g. WTF::String), and does not have a thread cache.
     ScopedUnlockGuard<thread_safe> scoped_unlock{root->lock_};
 
-    // Layout inside a direct map reservation:
-    //  |guard&metadata|[padding]|slot==slot_span|guard|
-    //                           <------(a)------>
-    //                 <---(b)--->
-    //  <------(c)----->            +            <-(c)->
-    //  <----------------------(d)--------------------->
-    //   (a) slot_size (slot and slot span are equivalent for direct map)
-    //   (b) padding_for_alignment
-    //   (c) GetDirectMapMetadataAndGuardPagesSize()
-    //   (d) reservation_size
-    //
-    // See also the slot layout diagram in AllocFlagsNoHooks() under RawAlloc()
-    // call. This will explain |committed_size| and |raw_size|.
-    size_t committed_size = bits::AlignUp(raw_size, SystemPageSize());
+    const size_t slot_size =
+        PartitionRoot<thread_safe>::GetDirectMapSlotSize(raw_size);
     // The super page starts with a partition page worth of metadata and guard
     // pages, hence alignment requests ==PartitionPageSize() will be
     // automatically satisfied. Padding is needed for higher-order alignment
@@ -229,11 +217,13 @@
         slot_span_alignment - PartitionPageSize();
     const size_t reservation_size =
         PartitionRoot<thread_safe>::GetDirectMapReservationSize(
-            raw_size, padding_for_alignment);
-    const size_t slot_size =
+            raw_size + padding_for_alignment);
+#if DCHECK_IS_ON()
+    const size_t available_reservation_size =
         reservation_size - padding_for_alignment -
         PartitionRoot<thread_safe>::GetDirectMapMetadataAndGuardPagesSize();
-    PA_DCHECK(committed_size <= slot_size);
+    PA_DCHECK(slot_size <= available_reservation_size);
+#endif
 
     // Allocate from GigaCage. Route to the appropriate GigaCage pool based on
     // BackupRefPtr support.
@@ -280,8 +270,8 @@
     // Note that we didn't check above, because if we cannot even commit a
     // single page, then this is likely hopeless anyway, and we will crash very
     // soon.
-    const bool ok = root->TryRecommitSystemPagesForData(
-        slot_start, committed_size, PageUpdatePermissions);
+    const bool ok = root->TryRecommitSystemPagesForData(slot_start, slot_size,
+                                                        PageUpdatePermissions);
     if (!ok) {
       if (!return_null) {
         PartitionOutOfMemoryCommitFailure(root, slot_size);
diff --git a/base/allocator/partition_allocator/partition_direct_map_extent.h b/base/allocator/partition_allocator/partition_direct_map_extent.h
index 2008501c..8c373ba 100644
--- a/base/allocator/partition_allocator/partition_direct_map_extent.h
+++ b/base/allocator/partition_allocator/partition_direct_map_extent.h
@@ -18,11 +18,11 @@
   PartitionDirectMapExtent<thread_safe>* prev_extent;
   PartitionBucket<thread_safe>* bucket;
   // Size of the entire reservation, including guard pages, meta-data,
-  // padding for alignment before the slot, and padding for granularity at the
-  // end of the slot.
+  // padding for alignment before allocation, and padding for granularity at the
+  // end of the allocation.
   size_t reservation_size;
   // Padding between the first partition page (guard pages + meta-data) and
-  // the slot.
+  // the allocation.
   size_t padding_for_alignment;
 
   ALWAYS_INLINE static PartitionDirectMapExtent<thread_safe>* FromSlotSpan(
diff --git a/base/allocator/partition_allocator/partition_page.cc b/base/allocator/partition_allocator/partition_page.cc
index 6cf102a9..e0e6ac4 100644
--- a/base/allocator/partition_allocator/partition_page.cc
+++ b/base/allocator/partition_allocator/partition_page.cc
@@ -43,14 +43,10 @@
     extent->next_extent->prev_extent = extent->prev_extent;
   }
 
-  size_t raw_size = slot_span->GetRawSize();
-  size_t committed_size = bits::AlignUp(raw_size, SystemPageSize());
-  size_t reservation_size = extent->reservation_size;
-  PA_DCHECK(committed_size <= slot_span->bucket->slot_size);
-
   // The actual decommit is deferred, when releasing the reserved memory region.
-  root->DecreaseCommittedPages(committed_size);
+  root->DecreaseCommittedPages(slot_span->bucket->slot_size);
 
+  size_t reservation_size = extent->reservation_size;
   PA_DCHECK(!(reservation_size & DirectMapAllocationGranularityOffsetMask()));
   PA_DCHECK(root->total_size_of_direct_mapped_pages >= reservation_size);
   root->total_size_of_direct_mapped_pages -= reservation_size;
diff --git a/base/allocator/partition_allocator/partition_root.cc b/base/allocator/partition_allocator/partition_root.cc
index 6cc9fe2..a5ad086 100644
--- a/base/allocator/partition_allocator/partition_root.cc
+++ b/base/allocator/partition_allocator/partition_root.cc
@@ -7,7 +7,6 @@
 #include "base/allocator/partition_allocator/address_pool_manager_bitmap.h"
 #include "base/allocator/partition_allocator/oom.h"
 #include "base/allocator/partition_allocator/page_allocator.h"
-#include "base/allocator/partition_allocator/page_allocator_constants.h"
 #include "base/allocator/partition_allocator/partition_address_space.h"
 #include "base/allocator/partition_allocator/partition_alloc_check.h"
 #include "base/allocator/partition_allocator/partition_alloc_config.h"
@@ -678,52 +677,57 @@
 
   // Don't reallocate in-place if new reservation size would be less than 80 %
   // of the current one, to avoid holding on to too much unused address space.
-  // Make this check before comparing committed sizes, as even with equal or
-  // similar committed sizes we can save a lot if the original allocation was
-  // heavily padded for alignment.
+  // Make this check before comparing slot sizes, as even with equal or similar
+  // slot sizes we can save a lot if the original allocation was heavily padded
+  // for alignment.
   if ((new_reservation_size / SystemPageSize()) * 5 <
       (current_reservation_size / SystemPageSize()) * 4)
     return false;
 
-  // Calculate committed size the way PartitionDirectMap() would.
-  size_t new_committed_size = bits::AlignUp(raw_size, SystemPageSize());
-  if (new_committed_size < kMinDirectMappedDownsize)
+  // Note that the new size isn't a bucketed size; this function is called
+  // whenever we're reallocating a direct mapped allocation, so calculate it
+  // the way PartitionDirectMap() would.
+  size_t new_slot_size = GetDirectMapSlotSize(raw_size);
+  if (new_slot_size < kMinDirectMappedDownsize)
     return false;
 
   // Past this point, we decided we'll attempt to reallocate without relocating,
   // so we have to honor the padding for alignment in front of the original
   // allocation, even though this function isn't requesting any alignment.
 
-  size_t current_committed_size =
-      bits::AlignUp(slot_span->GetRawSize(), SystemPageSize());
-  // Slot and slot span are equivalent for direct map.
+  // bucket->slot_size is the currently committed size of the allocation.
+  size_t current_slot_size = slot_span->bucket->slot_size;
   char* slot_start =
       static_cast<char*>(SlotSpan::ToSlotSpanStartPtr(slot_span));
+  // This is the available part of the reservation up to which the new
+  // allocation can grow.
+  size_t available_reservation_size =
+      current_reservation_size - extent->padding_for_alignment -
+      PartitionRoot<thread_safe>::GetDirectMapMetadataAndGuardPagesSize();
 #if DCHECK_IS_ON()
   char* reservation_start = reinterpret_cast<char*>(
       reinterpret_cast<uintptr_t>(slot_start) & kSuperPageBaseMask);
   PA_DCHECK(internal::IsReservationStart(reservation_start));
-  PA_DCHECK(slot_start + slot_span->bucket->slot_size ==
+  PA_DCHECK(slot_start + available_reservation_size ==
             reservation_start + current_reservation_size -
                 GetDirectMapMetadataAndGuardPagesSize() + PartitionPageSize());
 #endif
 
-  if (new_committed_size == current_committed_size) {
+  if (new_slot_size == current_slot_size) {
     // No need to move any memory around, but update size and cookie below.
     // That's because raw_size may have changed.
-  } else if (new_committed_size < current_committed_size) {
+  } else if (new_slot_size < current_slot_size) {
     // Shrink by decommitting unneeded pages and making them inaccessible.
-    size_t decommit_size = current_committed_size - new_committed_size;
-    DecommitSystemPagesForData(slot_start + new_committed_size, decommit_size,
+    size_t decommit_size = current_slot_size - new_slot_size;
+    DecommitSystemPagesForData(slot_start + new_slot_size, decommit_size,
                                PageUpdatePermissions);
     // Since the decommited system pages are still reserved, we don't need to
     // change the entries for decommitted pages in the reservation offset table.
-  } else if (new_committed_size <= slot_span->bucket->slot_size) {
+  } else if (new_slot_size <= available_reservation_size) {
     // Grow within the actually reserved address space. Just need to make the
     // pages accessible again.
-    size_t recommit_slot_size_growth =
-        new_committed_size - current_committed_size;
-    RecommitSystemPagesForData(slot_start + current_committed_size,
+    size_t recommit_slot_size_growth = new_slot_size - current_slot_size;
+    RecommitSystemPagesForData(slot_start + current_slot_size,
                                recommit_slot_size_growth,
                                PageUpdatePermissions);
     // The recommited system pages had been already reserved and all the
@@ -731,7 +735,7 @@
     // region) have been already initialized.
 
 #if DCHECK_IS_ON()
-    memset(slot_start + current_committed_size, kUninitializedByte,
+    memset(slot_start + current_slot_size, kUninitializedByte,
            recommit_slot_size_growth);
 #endif
   } else {
@@ -741,6 +745,7 @@
   }
 
   slot_span->SetRawSize(raw_size);
+  slot_span->bucket->slot_size = new_slot_size;
 
 #if DCHECK_IS_ON()
   // Write a new trailing cookie.
diff --git a/base/allocator/partition_allocator/partition_root.h b/base/allocator/partition_allocator/partition_root.h
index e375bd70..829d501 100644
--- a/base/allocator/partition_allocator/partition_root.h
+++ b/base/allocator/partition_allocator/partition_root.h
@@ -413,12 +413,17 @@
 #endif
   }
 
-  // |padding_for_alignment| is between the first partition page (guard pages +
-  // meta-data) and the allocation (where |raw_size| starts).
+  static PAGE_ALLOCATOR_CONSTANTS_DECLARE_CONSTEXPR ALWAYS_INLINE size_t
+  GetDirectMapSlotSize(size_t raw_size) {
+    // Caller must check that the size is not above the MaxDirectMapped()
+    // limit before calling. This also guards against integer overflow in the
+    // calculation here.
+    PA_DCHECK(raw_size <= MaxDirectMapped());
+    return bits::AlignUp(raw_size, SystemPageSize());
+  }
+
   static ALWAYS_INLINE size_t
-  GetDirectMapReservationSize(size_t raw_size,
-                              size_t padding_for_alignment = 0) {
-    size_t padded_raw_size = raw_size + padding_for_alignment;
+  GetDirectMapReservationSize(size_t padded_raw_size) {
     // Caller must check that the size is not above the MaxDirectMapped()
     // limit before calling. This also guards against integer overflow in the
     // calculation here.
@@ -1100,7 +1105,7 @@
 
   // |ptr| points after the ref-count and the cookie.
   //
-  // Layout inside a slot:
+  // Layout inside the slot:
   //  <------extras----->                  <-extras->
   //  <--------------utilized_slot_size------------->
   //                    <----usable_size--->
@@ -1110,7 +1115,7 @@
   //
   // Note: ref-count and cookies can be 0-sized.
   //
-  // For more context, see the other Layout comment in AllocFlagsNoHooks().
+  // For more context, see the other "Layout inside the slot" comment below.
 #if EXPENSIVE_DCHECKS_ARE_ON() || defined(PA_ZERO_RANDOMLY_ON_FREE)
   const size_t utilized_slot_size = slot_span->GetUtilizedSlotSize();
 #endif
@@ -1476,22 +1481,20 @@
   if (UNLIKELY(!slot_start))
     return nullptr;
 
-  // Layout inside a slot:
-  //  |[refcnt]|[cookie]|...data...|[empty]|[cookie]|[unused]|[uncommitted]|
+  // Layout inside the slot:
+  //  |[refcnt]|[cookie]|...data...|[empty]|[cookie]|[unused]|
   //                    <---(a)---->
   //                    <-------(b)-------->
   //  <-------(c)------->                  <--(c)--->
   //  <-------------(d)------------>   +   <--(d)--->
   //  <---------------------(e)--------------------->
   //  <-------------------------(f)-------------------------->
-  //  <--------------------------------(g)--------------------------------->
   //   (a) requested_size
   //   (b) usable_size
   //   (c) extras
   //   (d) raw_size
   //   (e) utilized_slot_size
-  //   (f) slot's committed region (==slot_size for normal buckets)
-  //   (g) slot_size
+  //   (f) slot_size
   //
   // - Ref-count may or may not exist in the slot, depending on CheckedPtr
   //   implementation.
@@ -1508,9 +1511,6 @@
   //   to save raw_size, i.e. only for large allocations. For small allocations,
   //   we have no other choice than putting the cookie at the very end of the
   //   slot, thus creating the "empty" space.
-  // - "uncommitted" space occurs only in the direct map case, if more space
-  //   than needed is reserved due to allocation granularity, or when downsized
-  //   by realloc.
   //
   // If BUILDFLAG(PUT_REF_COUNT_IN_PREVIOUS_SLOT) is true, Layout inside the
   // slot of small buckets:
@@ -1699,9 +1699,8 @@
 // Return the capacity of the underlying slot (adjusted for extras) that'd be
 // used to satisfy a request of |size|. This doesn't mean this capacity would be
 // readily available. It merely means that if an allocation happened with that
-// returned value, it'd use the same amount of underlying address space as the
-// allocation with |size|. This isn't necessarily true for committed memory,
-// because single-slot spans and direct map may commit less than reserved pages.
+// returned value, it'd use the same amount of underlying memory as the
+// allocation with |size|.
 template <bool thread_safe>
 ALWAYS_INLINE size_t
 PartitionRoot<thread_safe>::AllocationCapacityFromRequestedSize(
@@ -1720,9 +1719,7 @@
   } else if (size > MaxDirectMapped()) {
     // Too large to allocate => return the size unchanged.
   } else {
-    PA_DCHECK(size > kMaxBucketed);
-    size = GetDirectMapReservationSize(size) -
-           GetDirectMapMetadataAndGuardPagesSize();
+    size = GetDirectMapSlotSize(size);
   }
   size = AdjustSizeForExtrasSubtract(size);
   return size;
diff --git a/base/allocator/partition_allocator/thread_cache_unittest.cc b/base/allocator/partition_allocator/thread_cache_unittest.cc
index cb4074d..042d9087d 100644
--- a/base/allocator/partition_allocator/thread_cache_unittest.cc
+++ b/base/allocator/partition_allocator/thread_cache_unittest.cc
@@ -51,11 +51,11 @@
 
 class LambdaThreadDelegate : public PlatformThread::Delegate {
  public:
-  explicit LambdaThreadDelegate(OnceClosure f) : f_(std::move(f)) {}
-  void ThreadMain() override { std::move(f_).Run(); }
+  explicit LambdaThreadDelegate(RepeatingClosure f) : f_(std::move(f)) {}
+  void ThreadMain() override { f_.Run(); }
 
  private:
-  OnceClosure f_;
+  RepeatingClosure f_;
 };
 
 class DeltaCounter {
@@ -526,12 +526,8 @@
   EXPECT_EQ(ThreadCacheRegistry::kMaxPurgeInterval,
             registry.purge_interval_for_testing());
 
-  // A lot of memory, directly go to the default interval.
-  FillThreadCacheWithMemory(
-      10 * ThreadCacheRegistry::kMinCachedMemoryForPurging + 1);
-  task_env_.FastForwardBy(registry.purge_interval_for_testing());
-  EXPECT_EQ(ThreadCacheRegistry::kDefaultPurgeInterval,
-            registry.purge_interval_for_testing());
+  // Cannot test the very large size with only one thread, this is tested below
+  // in the multiple threads test.
 }
 
 TEST_F(PartitionAllocThreadCacheTest, PeriodicPurgeSumsOverAllThreads) {
@@ -568,12 +564,12 @@
   EXPECT_EQ(ThreadCacheRegistry::kMaxPurgeInterval,
             registry.purge_interval_for_testing());
 
-  std::atomic<bool> allocations_done{false};
+  std::atomic<int> allocations_done{0};
   std::atomic<bool> can_finish{false};
   LambdaThreadDelegate delegate{BindLambdaForTesting([&]() {
-    FillThreadCacheWithMemory(10 *
+    FillThreadCacheWithMemory(5 *
                               ThreadCacheRegistry::kMinCachedMemoryForPurging);
-    allocations_done.store(true, std::memory_order_release);
+    allocations_done.fetch_add(1, std::memory_order_release);
 
     // This thread needs to be alive when the next periodic purge task runs.
     while (!can_finish.load(std::memory_order_acquire)) {
@@ -582,8 +578,10 @@
 
   PlatformThreadHandle thread_handle;
   PlatformThread::Create(0, &delegate, &thread_handle);
+  PlatformThreadHandle thread_handle_2;
+  PlatformThread::Create(0, &delegate, &thread_handle_2);
 
-  while (!allocations_done.load(std::memory_order_acquire)) {
+  while (allocations_done.load(std::memory_order_acquire) != 2) {
   }
 
   // Many allocations on the other thread.
@@ -593,6 +591,7 @@
 
   can_finish.store(true, std::memory_order_release);
   PlatformThread::Join(thread_handle);
+  PlatformThread::Join(thread_handle_2);
 }
 
 TEST_F(PartitionAllocThreadCacheTest, DynamicCountPerBucket) {
diff --git a/base/big_endian_unittest.cc b/base/big_endian_unittest.cc
index 665203e..7f73ab1 100644
--- a/base/big_endian_unittest.cc
+++ b/base/big_endian_unittest.cc
@@ -14,7 +14,7 @@
 namespace base {
 
 TEST(ReadBigEndianTest, ReadSignedPositive) {
-  char data[] = {0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x1A, 0X2A};
+  char data[] = {0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x1A, 0x2A};
   int8_t s8 = 0;
   int16_t s16 = 0;
   int32_t s32 = 0;
@@ -30,15 +30,15 @@
 }
 
 TEST(ReadBigEndianTest, ReadSignedNegative) {
-  char data[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0XFF};
+  uint8_t data[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
   int8_t s8 = 0;
   int16_t s16 = 0;
   int32_t s32 = 0;
   int64_t s64 = 0;
-  ReadBigEndian(data, &s8);
-  ReadBigEndian(data, &s16);
-  ReadBigEndian(data, &s32);
-  ReadBigEndian(data, &s64);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &s8);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &s16);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &s32);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &s64);
   EXPECT_EQ(-1, s8);
   EXPECT_EQ(-1, s16);
   EXPECT_EQ(-1, s32);
@@ -46,15 +46,15 @@
 }
 
 TEST(ReadBigEndianTest, ReadUnsignedSigned) {
-  char data[] = {0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0, 0xA1, 0XA2};
+  uint8_t data[] = {0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0, 0xA1, 0xA2};
   uint8_t u8 = 0;
   uint16_t u16 = 0;
   uint32_t u32 = 0;
   uint64_t u64 = 0;
-  ReadBigEndian(data, &u8);
-  ReadBigEndian(data, &u16);
-  ReadBigEndian(data, &u32);
-  ReadBigEndian(data, &u64);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &u8);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &u16);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &u32);
+  ReadBigEndian(reinterpret_cast<const char*>(data), &u64);
   EXPECT_EQ(0xA0, u8);
   EXPECT_EQ(0xA0B0, u16);
   EXPECT_EQ(0xA0B0C0D0, u32);
diff --git a/base/logging.cc b/base/logging.cc
index 48886b30..34cb442 100644
--- a/base/logging.cc
+++ b/base/logging.cc
@@ -157,7 +157,7 @@
 
 // Specifies the process' logging sink(s), represented as a combination of
 // LoggingDestination values joined by bitwise OR.
-int g_logging_destination = LOG_DEFAULT;
+uint32_t g_logging_destination = LOG_DEFAULT;
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
 // Specifies the format of log header for chrome os.
diff --git a/base/task/thread_pool/job_task_source.cc b/base/task/thread_pool/job_task_source.cc
index d44e3bc..05b2733e 100644
--- a/base/task/thread_pool/job_task_source.cc
+++ b/base/task/thread_pool/job_task_source.cc
@@ -43,14 +43,14 @@
 }
 
 JobTaskSource::State::Value JobTaskSource::State::DecrementWorkerCount() {
-  const size_t value_before_sub =
+  const uint32_t value_before_sub =
       value_.fetch_sub(kWorkerCountIncrement, std::memory_order_relaxed);
   DCHECK((value_before_sub >> kWorkerCountBitOffset) > 0);
   return {value_before_sub};
 }
 
 JobTaskSource::State::Value JobTaskSource::State::IncrementWorkerCount() {
-  size_t value_before_add =
+  uint32_t value_before_add =
       value_.fetch_add(kWorkerCountIncrement, std::memory_order_relaxed);
   return {value_before_add};
 }
diff --git a/base/task/thread_pool/job_task_source.h b/base/task/thread_pool/job_task_source.h
index d84cd84..ef4be9ed 100644
--- a/base/task/thread_pool/job_task_source.h
+++ b/base/task/thread_pool/job_task_source.h
@@ -96,9 +96,10 @@
   // ever modified under a lock or read atomically (optimistic read).
   class State {
    public:
-    static constexpr size_t kCanceledMask = 1;
-    static constexpr size_t kWorkerCountBitOffset = 1;
-    static constexpr size_t kWorkerCountIncrement = 1 << kWorkerCountBitOffset;
+    static constexpr uint32_t kCanceledMask = 1;
+    static constexpr int kWorkerCountBitOffset = 1;
+    static constexpr uint32_t kWorkerCountIncrement = 1
+                                                      << kWorkerCountBitOffset;
 
     struct Value {
       size_t worker_count() const { return value >> kWorkerCountBitOffset; }
diff --git a/base/test/scoped_logging_settings.h b/base/test/scoped_logging_settings.h
index cf664f1..92ee4bc 100644
--- a/base/test/scoped_logging_settings.h
+++ b/base/test/scoped_logging_settings.h
@@ -34,7 +34,7 @@
   // globals in //base/logging.cc
 
   const int min_log_level_;
-  const int logging_destination_;
+  const uint32_t logging_destination_;
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   const LogFormat log_format_;
diff --git a/base/trace_event/trace_logging_minimal_win.h b/base/trace_event/trace_logging_minimal_win.h
index e7b640e..6ce96f3 100644
--- a/base/trace_event/trace_logging_minimal_win.h
+++ b/base/trace_event/trace_logging_minimal_win.h
@@ -183,7 +183,7 @@
     uint16_t metadata_index;
     metadata_index = EventBegin(metadata, event_name);
     {  // scope for dummy array (simulates a C++17 comma-fold expression)
-      bool dummy[sizeof...(FieldTys) == 0 ? 1 : sizeof...(FieldTys)] = {
+      char dummy[sizeof...(FieldTys) == 0 ? 1 : sizeof...(FieldTys)] = {
           EventAddField(metadata, &metadata_index, event_fields.in_type_,
                         event_fields.out_type_, event_fields.Name())...};
       DCHECK(dummy);
@@ -195,7 +195,7 @@
     EVENT_DATA_DESCRIPTOR descriptors[kDescriptorsCount];
     uint8_t descriptors_index = 2;
     {  // scope for dummy array (simulates a C++17 comma-fold expression)
-      bool dummy[sizeof...(FieldTys) == 0 ? 1 : sizeof...(FieldTys)] = {
+      char dummy[sizeof...(FieldTys) == 0 ? 1 : sizeof...(FieldTys)] = {
           EventDescriptorFill(descriptors, &descriptors_index,
                               event_fields)...};
       DCHECK(dummy);
diff --git a/build/android/gyp/compile_java.py b/build/android/gyp/compile_java.py
index 0aafee1..0d5f4da 100755
--- a/build/android/gyp/compile_java.py
+++ b/build/android/gyp/compile_java.py
@@ -44,6 +44,18 @@
     'UnescapedEntity',
     'NonCanonicalType',
     'AlmostJavadoc',
+    # The following are added for errorprone update: https://crbug.com/1216032
+    'InlineMeSuggester',
+    'DoNotClaimAnnotations',
+    'JavaUtilDate',
+    'IdentityHashMapUsage',
+    'UnnecessaryMethodReference',
+    'LongFloatConversion',
+    'CharacterGetNumericValue',
+    'ErroneousThreadPoolConstructorChecker',
+    'StaticMockMember',
+    'MissingSuperCall',
+    'ToStringReturnsNull',
     # TODO(crbug.com/834807): Follow steps in bug
     'DoubleBraceInitialization',
     # TODO(crbug.com/834790): Follow steps in bug.
@@ -176,7 +188,6 @@
     'InvalidThrows',
     'LongLiteralLowerCaseSuffix',
     'MultiVariableDeclaration',
-    'ParameterNotNullable',
     'RedundantOverride',
     'StaticQualifiedUsingExpression',
     'StringEquality',
@@ -209,6 +220,8 @@
           line, prefix, 'docs/ui/android/bytecode_rewriting.md')
     return line
 
+  output = build_utils.FilterReflectiveAccessJavaWarnings(output)
+
   lines = (l for l in output.split('\n') if ApplyFilters(l))
   lines = (Elaborate(l) for l in lines)
 
diff --git a/build/android/gyp/compile_resources.py b/build/android/gyp/compile_resources.py
index 48409de..42b34f2 100755
--- a/build/android/gyp/compile_resources.py
+++ b/build/android/gyp/compile_resources.py
@@ -177,29 +177,10 @@
       '--no-xml-namespaces',
       action='store_true',
       help='Whether to strip xml namespaces from processed xml resources.')
-  input_opts.add_argument(
-      '--short-resource-paths',
-      action='store_true',
-      help='Whether to shorten resource paths inside the apk or module.')
-  input_opts.add_argument(
-      '--strip-resource-names',
-      action='store_true',
-      help='Whether to strip resource names from the resource table of the apk '
-      'or module.')
 
   output_opts.add_argument('--arsc-path', help='Apk output for arsc format.')
   output_opts.add_argument('--proto-path', help='Apk output for proto format.')
   group = input_opts.add_mutually_exclusive_group()
-  group.add_argument(
-      '--optimized-arsc-path',
-      help='Output for `aapt2 optimize` for arsc format (enables the step).')
-  group.add_argument(
-      '--optimized-proto-path',
-      help='Output for `aapt2 optimize` for proto format (enables the step).')
-  input_opts.add_argument(
-      '--resources-config-paths',
-      default='[]',
-      help='GN list of paths to aapt2 resources config files.')
 
   output_opts.add_argument(
       '--info-path', help='Path to output info file for the partial apk.')
@@ -222,11 +203,6 @@
   output_opts.add_argument(
       '--emit-ids-out', help='Path to file produced by aapt2 --emit-ids.')
 
-  output_opts.add_argument(
-      '--resources-path-map-out-path',
-      help='Path to file produced by aapt2 that maps original resource paths '
-      'to shortened resource paths inside the apk or module.')
-
   input_opts.add_argument(
       '--is-bundle-module',
       action='store_true',
@@ -257,20 +233,10 @@
       options.values_filter_rules)
   options.extra_main_r_text_files = build_utils.ParseGnList(
       options.extra_main_r_text_files)
-  options.resources_config_paths = build_utils.ParseGnList(
-      options.resources_config_paths)
-
-  if options.optimized_proto_path and not options.proto_path:
-    # We could write to a temp file, but it's simpler to require it.
-    parser.error('--optimized-proto-path requires --proto-path')
 
   if not options.arsc_path and not options.proto_path:
     parser.error('One of --arsc-path or --proto-path is required.')
 
-  if options.resources_path_map_out_path and not options.short_resource_paths:
-    parser.error(
-        '--resources-path-map-out-path requires --short-resource-paths')
-
   if options.package_id and options.shared_resources:
     parser.error('--package-id and --shared-resources are mutually exclusive')
 
@@ -846,9 +812,6 @@
 
   # We always create a binary arsc file first, then convert to proto, so flags
   # such as --shared-lib can be supported.
-  arsc_path = build.arsc_path
-  if arsc_path is None:
-    _, arsc_path = tempfile.mkstmp()
   link_command += ['-o', build.arsc_path]
 
   logging.debug('Starting: aapt2 link')
@@ -896,100 +859,9 @@
         build.arsc_path, build.proto_path
     ])
 
-  if build.arsc_path is None:
-    os.remove(arsc_path)
-
-  if options.optimized_proto_path:
-    _OptimizeApk(build.optimized_proto_path, options, build.temp_dir,
-                 build.proto_path, build.r_txt_path)
-  elif options.optimized_arsc_path:
-    _OptimizeApk(build.optimized_arsc_path, options, build.temp_dir,
-                 build.arsc_path, build.r_txt_path)
-
   return desired_manifest_package_name
 
 
-def _CombineResourceConfigs(resources_config_paths, out_config_path):
-  with open(out_config_path, 'w') as out_config:
-    for config_path in resources_config_paths:
-      with open(config_path) as config:
-        out_config.write(config.read())
-        out_config.write('\n')
-
-
-def _OptimizeApk(output, options, temp_dir, unoptimized_path, r_txt_path):
-  """Optimize intermediate .ap_ file with aapt2.
-
-  Args:
-    output: Path to write to.
-    options: The command-line options.
-    temp_dir: A temporary directory.
-    unoptimized_path: path of the apk to optimize.
-    r_txt_path: path to the R.txt file of the unoptimized apk.
-  """
-  optimize_command = [
-      options.aapt2_path,
-      'optimize',
-      unoptimized_path,
-      '-o',
-      output,
-  ]
-
-  # Optimize the resources.arsc file by obfuscating resource names and only
-  # allow usage via R.java constant.
-  if options.strip_resource_names:
-    no_collapse_resources = _ExtractNonCollapsableResources(r_txt_path)
-    gen_config_path = os.path.join(temp_dir, 'aapt2.config')
-    if options.resources_config_paths:
-      _CombineResourceConfigs(options.resources_config_paths, gen_config_path)
-    with open(gen_config_path, 'a') as config:
-      for resource in no_collapse_resources:
-        config.write('{}#no_collapse\n'.format(resource))
-
-    optimize_command += [
-        '--collapse-resource-names',
-        '--resources-config-path',
-        gen_config_path,
-    ]
-
-  if options.short_resource_paths:
-    optimize_command += ['--shorten-resource-paths']
-  if options.resources_path_map_out_path:
-    optimize_command += [
-        '--resource-path-shortening-map', options.resources_path_map_out_path
-    ]
-
-  logging.debug('Running aapt2 optimize')
-  build_utils.CheckOutput(
-      optimize_command, print_stdout=False, print_stderr=False)
-
-
-def _ExtractNonCollapsableResources(rtxt_path):
-  """Extract resources that should not be collapsed from the R.txt file
-
-  Resources of type ID are references to UI elements/views. They are used by
-  UI automation testing frameworks. They are kept in so that they don't break
-  tests, even though they may not actually be used during runtime. See
-  https://crbug.com/900993
-  App icons (aka mipmaps) are sometimes referenced by other apps by name so must
-  be keps as well. See https://b/161564466
-
-  Args:
-    rtxt_path: Path to R.txt file with all the resources
-  Returns:
-    List of resources in the form of <resource_type>/<resource_name>
-  """
-  resources = []
-  _NO_COLLAPSE_TYPES = ['id', 'mipmap']
-  with open(rtxt_path) as rtxt:
-    for line in rtxt:
-      for resource_type in _NO_COLLAPSE_TYPES:
-        if ' {} '.format(resource_type) in line:
-          resource_name = line.split()[2]
-          resources.append('{}/{}'.format(resource_type, resource_name))
-  return resources
-
-
 @contextlib.contextmanager
 def _CreateStableIdsFile(in_path, out_path, package_name):
   """Transforms a file generated by --emit-ids from another package.
@@ -1018,8 +890,6 @@
       (options.r_text_out, build.r_txt_path),
       (options.arsc_path, build.arsc_path),
       (options.proto_path, build.proto_path),
-      (options.optimized_arsc_path, build.optimized_arsc_path),
-      (options.optimized_proto_path, build.optimized_proto_path),
       (options.proguard_file, build.proguard_path),
       (options.proguard_file_main_dex, build.proguard_main_dex_path),
       (options.emit_ids_out, build.emit_ids_path),
diff --git a/build/android/gyp/optimize_resources.py b/build/android/gyp/optimize_resources.py
new file mode 100755
index 0000000..d3b11636
--- /dev/null
+++ b/build/android/gyp/optimize_resources.py
@@ -0,0 +1,151 @@
+#!/usr/bin/env python3
+#
+# Copyright 2021 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import argparse
+import logging
+import os
+import sys
+
+from util import build_utils
+
+
+def _ParseArgs(args):
+  """Parses command line options.
+
+  Returns:
+    An options object as from argparse.ArgumentParser.parse_args()
+  """
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--aapt2-path',
+                      required=True,
+                      help='Path to the Android aapt2 tool.')
+  parser.add_argument(
+      '--short-resource-paths',
+      action='store_true',
+      help='Whether to shorten resource paths inside the apk or module.')
+  parser.add_argument(
+      '--strip-resource-names',
+      action='store_true',
+      help='Whether to strip resource names from the resource table of the apk '
+      'or module.')
+  parser.add_argument('--proto-path',
+                      required=True,
+                      help='Input proto format resources APK.')
+  parser.add_argument('--resources-config-paths',
+                      default='[]',
+                      help='GN list of paths to aapt2 resources config files.')
+  parser.add_argument('--r-text-in',
+                      required=True,
+                      help='Path to R.txt. Used to exclude id/ resources.')
+  parser.add_argument(
+      '--resources-path-map-out-path',
+      help='Path to file produced by aapt2 that maps original resource paths '
+      'to shortened resource paths inside the apk or module.')
+  parser.add_argument('--optimized-proto-path',
+                      required=True,
+                      help='Output for `aapt2 optimize`.')
+  options = parser.parse_args(args)
+
+  options.resources_config_paths = build_utils.ParseGnList(
+      options.resources_config_paths)
+
+  if options.resources_path_map_out_path and not options.short_resource_paths:
+    parser.error(
+        '--resources-path-map-out-path requires --short-resource-paths')
+  return options
+
+
+def _CombineResourceConfigs(resources_config_paths, out_config_path):
+  with open(out_config_path, 'w') as out_config:
+    for config_path in resources_config_paths:
+      with open(config_path) as config:
+        out_config.write(config.read())
+        out_config.write('\n')
+
+
+def _ExtractNonCollapsableResources(rtxt_path):
+  """Extract resources that should not be collapsed from the R.txt file
+
+  Resources of type ID are references to UI elements/views. They are used by
+  UI automation testing frameworks. They are kept in so that they don't break
+  tests, even though they may not actually be used during runtime. See
+  https://crbug.com/900993
+  App icons (aka mipmaps) are sometimes referenced by other apps by name so must
+  be keps as well. See https://b/161564466
+
+  Args:
+    rtxt_path: Path to R.txt file with all the resources
+  Returns:
+    List of resources in the form of <resource_type>/<resource_name>
+  """
+  resources = []
+  _NO_COLLAPSE_TYPES = ['id', 'mipmap']
+  with open(rtxt_path) as rtxt:
+    for line in rtxt:
+      for resource_type in _NO_COLLAPSE_TYPES:
+        if ' {} '.format(resource_type) in line:
+          resource_name = line.split()[2]
+          resources.append('{}/{}'.format(resource_type, resource_name))
+  return resources
+
+
+def _OptimizeApk(output, options, temp_dir, unoptimized_path, r_txt_path):
+  """Optimize intermediate .ap_ file with aapt2.
+
+  Args:
+    output: Path to write to.
+    options: The command-line options.
+    temp_dir: A temporary directory.
+    unoptimized_path: path of the apk to optimize.
+    r_txt_path: path to the R.txt file of the unoptimized apk.
+  """
+  optimize_command = [
+      options.aapt2_path,
+      'optimize',
+      unoptimized_path,
+      '-o',
+      output,
+  ]
+
+  # Optimize the resources.pb file by obfuscating resource names and only
+  # allow usage via R.java constant.
+  if options.strip_resource_names:
+    no_collapse_resources = _ExtractNonCollapsableResources(r_txt_path)
+    gen_config_path = os.path.join(temp_dir, 'aapt2.config')
+    if options.resources_config_paths:
+      _CombineResourceConfigs(options.resources_config_paths, gen_config_path)
+    with open(gen_config_path, 'a') as config:
+      for resource in no_collapse_resources:
+        config.write('{}#no_collapse\n'.format(resource))
+
+    optimize_command += [
+        '--collapse-resource-names',
+        '--resources-config-path',
+        gen_config_path,
+    ]
+
+  if options.short_resource_paths:
+    optimize_command += ['--shorten-resource-paths']
+  if options.resources_path_map_out_path:
+    optimize_command += [
+        '--resource-path-shortening-map', options.resources_path_map_out_path
+    ]
+
+  logging.debug('Running aapt2 optimize')
+  build_utils.CheckOutput(optimize_command,
+                          print_stdout=False,
+                          print_stderr=False)
+
+
+def main(args):
+  options = _ParseArgs(args)
+  with build_utils.TempDir() as temp_dir:
+    _OptimizeApk(options.optimized_proto_path, options, temp_dir,
+                 options.proto_path, options.r_text_in)
+
+
+if __name__ == '__main__':
+  main(sys.argv[1:])
diff --git a/build/android/gyp/optimize_resources.pydeps b/build/android/gyp/optimize_resources.pydeps
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/build/android/gyp/optimize_resources.pydeps
diff --git a/build/android/gyp/resources_shrinker/BUILD.gn b/build/android/gyp/resources_shrinker/BUILD.gn
deleted file mode 100644
index e6381e1..0000000
--- a/build/android/gyp/resources_shrinker/BUILD.gn
+++ /dev/null
@@ -1,15 +0,0 @@
-import("//build/config/android/rules.gni")
-
-java_binary("resources_shrinker") {
-  sources = [ "//build/android/gyp/resources_shrinker/Shrinker.java" ]
-  main_class = "build.android.gyp.resources_shrinker.Shrinker"
-  deps = [
-    "//third_party/android_deps:com_android_tools_common_java",
-    "//third_party/android_deps:com_android_tools_layoutlib_layoutlib_api_java",
-    "//third_party/android_deps:com_android_tools_sdk_common_java",
-    "//third_party/android_deps:com_google_guava_guava_java",
-    "//third_party/android_deps:org_jetbrains_kotlin_kotlin_stdlib_java",
-    "//third_party/r8:r8_java",
-  ]
-  wrapper_script_name = "helper/resources_shrinker"
-}
diff --git a/build/android/gyp/resources_shrinker/shrinker.pydeps b/build/android/gyp/resources_shrinker/shrinker.pydeps
deleted file mode 100644
index 92c8905e..0000000
--- a/build/android/gyp/resources_shrinker/shrinker.pydeps
+++ /dev/null
@@ -1,30 +0,0 @@
-# Generated by running:
-#   build/print_python_deps.py --root build/android/gyp/resources_shrinker --output build/android/gyp/resources_shrinker/shrinker.pydeps build/android/gyp/resources_shrinker/shrinker.py
-../../../../third_party/jinja2/__init__.py
-../../../../third_party/jinja2/_compat.py
-../../../../third_party/jinja2/asyncfilters.py
-../../../../third_party/jinja2/asyncsupport.py
-../../../../third_party/jinja2/bccache.py
-../../../../third_party/jinja2/compiler.py
-../../../../third_party/jinja2/defaults.py
-../../../../third_party/jinja2/environment.py
-../../../../third_party/jinja2/exceptions.py
-../../../../third_party/jinja2/filters.py
-../../../../third_party/jinja2/idtracking.py
-../../../../third_party/jinja2/lexer.py
-../../../../third_party/jinja2/loaders.py
-../../../../third_party/jinja2/nodes.py
-../../../../third_party/jinja2/optimizer.py
-../../../../third_party/jinja2/parser.py
-../../../../third_party/jinja2/runtime.py
-../../../../third_party/jinja2/tests.py
-../../../../third_party/jinja2/utils.py
-../../../../third_party/jinja2/visitor.py
-../../../../third_party/markupsafe/__init__.py
-../../../../third_party/markupsafe/_compat.py
-../../../../third_party/markupsafe/_native.py
-../../../gn_helpers.py
-../util/__init__.py
-../util/build_utils.py
-../util/resource_utils.py
-shrinker.py
diff --git a/build/android/gyp/resources_shrinker/shrinker.py b/build/android/gyp/unused_resources.py
similarity index 70%
rename from build/android/gyp/resources_shrinker/shrinker.py
rename to build/android/gyp/unused_resources.py
index 2800ce29..cdaf4cf5 100755
--- a/build/android/gyp/resources_shrinker/shrinker.py
+++ b/build/android/gyp/unused_resources.py
@@ -24,16 +24,18 @@
   parser.add_argument(
       '--dependencies-res-zips',
       required=True,
+      action='append',
       help='Resources zip archives to investigate for unused resources.')
-  parser.add_argument('--dex',
+  parser.add_argument('--dexes',
+                      action='append',
                       required=True,
                       help='Path to dex file, or zip with dex files.')
   parser.add_argument(
       '--proguard-mapping',
-      required=True,
       help='Path to proguard mapping file for the optimized dex.')
   parser.add_argument('--r-text', required=True, help='Path to R.txt')
-  parser.add_argument('--android-manifest',
+  parser.add_argument('--android-manifests',
+                      action='append',
                       required=True,
                       help='Path to AndroidManifest')
   parser.add_argument('--output-config',
@@ -54,20 +56,31 @@
     for dependency_res_zip in options.dependencies_res_zips:
       dep_subdirs += resource_utils.ExtractDeps([dependency_res_zip], temp_dir)
 
-    build_utils.CheckOutput([
-        options.script, '--rtxts', options.r_text, '--manifests',
-        options.android_manifest, '--resourceDirs', ':'.join(dep_subdirs),
-        '--dex', options.dex, '--mapping', options.proguard_mapping,
-        '--outputConfig', options.output_config
-    ])
+    cmd = [
+        options.script,
+        '--rtxts',
+        options.r_text,
+        '--manifests',
+        ':'.join(options.android_manifests),
+        '--resourceDirs',
+        ':'.join(dep_subdirs),
+        '--dexes',
+        ':'.join(options.dexes),
+        '--outputConfig',
+        options.output_config,
+    ]
+    if options.proguard_mapping:
+      cmd += [
+          '--mapping',
+          options.proguard_mapping,
+      ]
+    build_utils.CheckOutput(cmd)
 
   if options.depfile:
-    depfile_deps = options.dependencies_res_zips + [
-        options.r_text,
-        options.android_manifest,
-        options.dex,
-        options.proguard_mapping,
-    ]
+    depfile_deps = (options.dependencies_res_zips + options.android_manifests +
+                    options.dexes) + [options.r_text]
+    if options.proguard_mapping:
+      depfile_deps.append(options.proguard_mapping)
     build_utils.WriteDepfile(options.depfile, options.output_config,
                              depfile_deps)
 
diff --git a/build/android/gyp/unused_resources.pydeps b/build/android/gyp/unused_resources.pydeps
new file mode 100644
index 0000000..4753ec3
--- /dev/null
+++ b/build/android/gyp/unused_resources.pydeps
@@ -0,0 +1,30 @@
+# Generated by running:
+#   build/print_python_deps.py --root build/android/gyp --output build/android/gyp/unused_resources.pydeps build/android/gyp/unused_resources.py
+../../../third_party/jinja2/__init__.py
+../../../third_party/jinja2/_compat.py
+../../../third_party/jinja2/asyncfilters.py
+../../../third_party/jinja2/asyncsupport.py
+../../../third_party/jinja2/bccache.py
+../../../third_party/jinja2/compiler.py
+../../../third_party/jinja2/defaults.py
+../../../third_party/jinja2/environment.py
+../../../third_party/jinja2/exceptions.py
+../../../third_party/jinja2/filters.py
+../../../third_party/jinja2/idtracking.py
+../../../third_party/jinja2/lexer.py
+../../../third_party/jinja2/loaders.py
+../../../third_party/jinja2/nodes.py
+../../../third_party/jinja2/optimizer.py
+../../../third_party/jinja2/parser.py
+../../../third_party/jinja2/runtime.py
+../../../third_party/jinja2/tests.py
+../../../third_party/jinja2/utils.py
+../../../third_party/jinja2/visitor.py
+../../../third_party/markupsafe/__init__.py
+../../../third_party/markupsafe/_compat.py
+../../../third_party/markupsafe/_native.py
+../../gn_helpers.py
+unused_resources.py
+util/__init__.py
+util/build_utils.py
+util/resource_utils.py
diff --git a/build/android/gyp/write_build_config.py b/build/android/gyp/write_build_config.py
index 489dc607..752ab30 100755
--- a/build/android/gyp/write_build_config.py
+++ b/build/android/gyp/write_build_config.py
@@ -966,7 +966,10 @@
   parser.add_option('--resources-zip', help='Path to target\'s resources zip.')
   parser.add_option('--package-name',
       help='Java package name for these resources.')
-  parser.add_option('--android-manifest', help='Path to android manifest.')
+  parser.add_option('--android-manifest',
+                    help='Path to the root android manifest.')
+  parser.add_option('--merged-android-manifest',
+                    help='Path to the merged android manifest.')
   parser.add_option('--resource-dirs', action='append', default=[],
                     help='GYP-list of resource dirs')
   parser.add_option(
@@ -1347,6 +1350,9 @@
   if options.android_manifest:
     deps_info['android_manifest'] = options.android_manifest
 
+  if options.merged_android_manifest:
+    deps_info['merged_android_manifest'] = options.merged_android_manifest
+
   if options.bundled_srcjars:
     deps_info['bundled_srcjars'] = build_utils.ParseGnList(
         options.bundled_srcjars)
diff --git a/build/android/unused_resources/BUILD.gn b/build/android/unused_resources/BUILD.gn
new file mode 100644
index 0000000..1596104
--- /dev/null
+++ b/build/android/unused_resources/BUILD.gn
@@ -0,0 +1,19 @@
+# Copyright 2021 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//build/config/android/rules.gni")
+
+java_binary("unused_resources") {
+  sources = [ "//build/android/unused_resources/UnusedResources.java" ]
+  main_class = "build.android.unused_resources.UnusedResources"
+  deps = [
+    "//third_party/android_deps:com_android_tools_common_java",
+    "//third_party/android_deps:com_android_tools_layoutlib_layoutlib_api_java",
+    "//third_party/android_deps:com_android_tools_sdk_common_java",
+    "//third_party/android_deps:com_google_guava_guava_java",
+    "//third_party/android_deps:org_jetbrains_kotlin_kotlin_stdlib_java",
+    "//third_party/r8:r8_java",
+  ]
+  wrapper_script_name = "helper/unused_resources"
+}
diff --git a/build/android/gyp/resources_shrinker/Shrinker.java b/build/android/unused_resources/UnusedResources.java
similarity index 94%
rename from build/android/gyp/resources_shrinker/Shrinker.java
rename to build/android/unused_resources/UnusedResources.java
index 50e2f93e..6334223 100644
--- a/build/android/gyp/resources_shrinker/Shrinker.java
+++ b/build/android/unused_resources/UnusedResources.java
@@ -19,7 +19,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-package build.android.gyp.resources_shrinker;
+package build.android.unused_resources;
 
 import static com.android.ide.common.symbols.SymbolIo.readFromAapt;
 import static com.android.utils.SdkUtils.endsWithIgnoreCase;
@@ -44,6 +44,7 @@
 import com.google.common.collect.Maps;
 import com.google.common.io.ByteStreams;
 import com.google.common.io.Closeables;
+import com.google.common.io.Files;
 
 import org.w3c.dom.Document;
 import org.w3c.dom.Node;
@@ -54,7 +55,6 @@
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.io.StringWriter;
-import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Arrays;
@@ -77,7 +77,7 @@
     - Reduce dependencies unless absolutely required.
 */
 
-public class Shrinker {
+public class UnusedResources {
     private static final String ANDROID_RES = "android_res/";
     private static final String DOT_DEX = ".dex";
     private static final String DOT_CLASS = ".class";
@@ -97,9 +97,6 @@
     private final StringWriter mDebugOutput;
     private final PrintWriter mDebugPrinter;
 
-    /** Easy way to invoke more verbose output for debugging */
-    private boolean mDebug = false;
-
     /** The computed set of unused resources */
     private List<Resource> mUnused;
 
@@ -136,8 +133,8 @@
         }
     }
 
-    public Shrinker(Iterable<File> rTxtFiles, Iterable<File> classes, Iterable<File> manifests,
-            File mapping, Iterable<File> resources, File reportFile) {
+    public UnusedResources(Iterable<File> rTxtFiles, Iterable<File> classes,
+            Iterable<File> manifests, File mapping, Iterable<File> resources, File reportFile) {
         mRTxtFiles = rTxtFiles;
         mProguardMapping = mapping;
         mClasses = classes;
@@ -213,13 +210,11 @@
             throws IOException, SAXException, ParserConfigurationException {
         for (File resDir : resources) {
             File[] resourceFolders = resDir.listFiles();
-            if (resourceFolders != null) {
-                for (File folder : resourceFolders) {
-                    ResourceFolderType folderType =
-                            ResourceFolderType.getFolderType(folder.getName());
-                    if (folderType != null) {
-                        recordResources(folderType, folder);
-                    }
+            assert resourceFolders != null : "Invalid resource directory " + resDir;
+            for (File folder : resourceFolders) {
+                ResourceFolderType folderType = ResourceFolderType.getFolderType(folder.getName());
+                if (folderType != null) {
+                    recordResources(folderType, folder);
                 }
             }
         }
@@ -392,7 +387,7 @@
 
             @Override
             public void referencedInt(int value) {
-                Shrinker.this.referencedInt("dex", value, file, name);
+                UnusedResources.this.referencedInt("dex", value, file, name);
             }
 
             @Override
@@ -502,8 +497,7 @@
 
     private void referencedInt(String context, int value, File file, String currentClass) {
         Resource resource = mModel.getResource(value);
-        if (ResourceUsageModel.markReachable(resource) && mDebug) {
-            assert mDebugPrinter != null : "mDebug is true, but mDebugPrinter is null.";
+        if (ResourceUsageModel.markReachable(resource) && mDebugPrinter != null) {
             mDebugPrinter.println("Marking " + resource + " reachable: referenced from " + context
                     + " in " + file + ":" + currentClass);
         }
@@ -563,7 +557,7 @@
                                         .map(s -> new File(s))
                                         .collect(Collectors.toList());
                     break;
-                case "--dex":
+                case "--dexes":
                     classes = Arrays.stream(args[i + 1].split(":"))
                                       .map(s -> new File(s))
                                       .collect(Collectors.toList());
@@ -591,9 +585,10 @@
                     throw new IllegalArgumentException(args[i] + " is not a valid arg.");
             }
         }
-        Shrinker shrinker = new Shrinker(rTxtFiles, classes, manifests, mapping, resources, log);
-        shrinker.analyze();
-        shrinker.close();
-        shrinker.emitConfig(configPath);
+        UnusedResources unusedResources =
+                new UnusedResources(rTxtFiles, classes, manifests, mapping, resources, log);
+        unusedResources.analyze();
+        unusedResources.close();
+        unusedResources.emitConfig(configPath);
     }
 }
diff --git a/build/config/android/config.gni b/build/config/android/config.gni
index cbfbba9..4cf67d9 100644
--- a/build/config/android/config.gni
+++ b/build/config/android/config.gni
@@ -350,4 +350,7 @@
       "$android_ndk_root/prebuilt/$android_prebuilt_arch/gdbserver/gdbserver"
 
   android_sdk_tools_bundle_aapt2 = "${android_sdk_tools_bundle_aapt2_dir}/aapt2"
+
+  # Temporary fix for https://crbug.com/1205664
+  use_upstream_errorprone_annotations_inlineme = true
 }
diff --git a/build/config/android/internal_rules.gni b/build/config/android/internal_rules.gni
index 472a6f6..8e35d68e 100644
--- a/build/config/android/internal_rules.gni
+++ b/build/config/android/internal_rules.gni
@@ -360,6 +360,12 @@
       args += [ "--treat-as-locale-paks" ]
     }
 
+    if (defined(invoker.merged_android_manifest)) {
+      args += [
+        "--merged-android-manifest",
+        rebase_path(invoker.merged_android_manifest, root_build_dir),
+      ]
+    }
     if (defined(invoker.android_manifest)) {
       inputs += [ invoker.android_manifest ]
       args += [
@@ -1032,7 +1038,7 @@
 
       args = [
         "--target-name",
-        get_label_info(target_name, "label_no_toolchain"),
+        get_label_info(":${target_name}", "label_no_toolchain"),
         "--depfile",
         rebase_path(depfile, root_build_dir),
         "--lint-binary-path",
@@ -2016,7 +2022,7 @@
       _rebased_build_config = rebase_path(invoker.build_config, root_build_dir)
       args = [
         "--target-name",
-        get_label_info(target_name, "label_no_toolchain"),
+        get_label_info(":${target_name}", "label_no_toolchain"),
         "--script",
         rebase_path(_bytecode_checker_script, root_build_dir),
         "--gn-target=${invoker.target_label}",
@@ -2253,29 +2259,15 @@
   #     Use resource IDs provided by another APK target when compiling resources
   #     (via. "aapt2 link --stable-ids")
   #
-  #   short_resource_paths: (optional)
-  #     Rename the paths within a the apk to be randomly generated short
-  #     strings to reduce binary size.
-  #
-  #   strip_resource_names: (optional)
-  #     Strip resource names from the resources table of the apk.
   #
   # Output variables:
   #   arsc_output: Path to output .ap_ file (optional).
   #
   #   proto_output: Path to output .proto.ap_ file (optional).
   #
-  #   optimized_arsc_output: Path to optimized .ap_ file (optional).
-  #
-  #   optimized_proto_output: Path to optimized .proto.ap_ file (optional).
-  #
   #   r_text_out_path: (optional):
   #       Path for the corresponding generated R.txt file.
   #
-  #   resources_path_map_out_path: (optional):
-  #       Path for the generated map between original resource paths and
-  #       shortend resource paths.
-  #
   #   proguard_file: (optional)
   #       Path to proguard configuration file for this apk target.
   #
@@ -2305,9 +2297,6 @@
     if (defined(invoker.arsc_output)) {
       _arsc_output = invoker.arsc_output
     }
-    if (defined(invoker.optimized_arsc_output)) {
-      _optimized_arsc_output = invoker.optimized_arsc_output
-    }
     _final_srcjar_path = "${target_gen_dir}/${target_name}.srcjar"
 
     _script = "//build/android/gyp/compile_resources.py"
@@ -2375,36 +2364,6 @@
         rebase_path(invoker.size_info_path, root_build_dir),
       ]
     }
-    if (defined(_optimized_arsc_output)) {
-      _outputs += [ _optimized_arsc_output ]
-      _args += [
-        "--optimized-arsc-path",
-        rebase_path(_optimized_arsc_output, root_build_dir),
-      ]
-    }
-    if (defined(invoker.optimized_proto_output)) {
-      _outputs += [ invoker.optimized_proto_output ]
-      _args += [
-        "--optimized-proto-path",
-        rebase_path(invoker.optimized_proto_output, root_build_dir),
-      ]
-    }
-    if (defined(invoker.resources_config_paths)) {
-      _inputs += invoker.resources_config_paths
-      _rebased_resource_configs =
-          rebase_path(invoker.resources_config_paths, root_build_dir)
-      _args += [ "--resources-config-paths=${_rebased_resource_configs}" ]
-    }
-    if (defined(invoker.short_resource_paths) && invoker.short_resource_paths) {
-      _args += [ "--short-resource-paths" ]
-      if (defined(invoker.resources_path_map_out_path)) {
-        _outputs += [ invoker.resources_path_map_out_path ]
-        _args += [
-          "--resources-path-map-out-path",
-          rebase_path(invoker.resources_path_map_out_path, root_build_dir),
-        ]
-      }
-    }
 
     if (defined(invoker.r_java_root_package_name)) {
       _args += [
@@ -2413,10 +2372,6 @@
       ]
     }
 
-    if (defined(invoker.strip_resource_names) && invoker.strip_resource_names) {
-      _args += [ "--strip-resource-names" ]
-    }
-
     # Useful to have android:debuggable in the manifest even for Release
     # builds. Just omit it for officai
     if (debuggable_apks) {
@@ -2643,35 +2598,117 @@
     }
   }
 
+  # A template that is used to optimize compiled resources using aapt2 optimize.
+  #
+  #   proto_input_path:
+  #     Path to input compiled .proto.ap_ file.
+  #
+  #   short_resource_paths: (optional)
+  #     Rename the paths within a the apk to be randomly generated short
+  #     strings to reduce binary size.
+  #
+  #   strip_resource_names: (optional)
+  #     Strip resource names from the resources table of the apk.
+  #
+  #   resources_configs_paths: (optional)
+  #     List of resource configs to use for optimization.
+  #
+  #   optimized_proto_output:
+  #     Path to output optimized .proto.ap_ file.
+  #
+  #   resources_path_map_out_path: (optional):
+  #       Path for the generated map between original resource paths and
+  #       shortened resource paths.
+  template("optimize_resources") {
+    forward_variables_from(invoker, TESTONLY_AND_VISIBILITY)
+    action_with_pydeps(target_name) {
+      forward_variables_from(invoker, [ "deps" ])
+      script = "//build/android/gyp/optimize_resources.py"
+      outputs = [ invoker.optimized_proto_output ]
+      inputs = [
+        android_sdk_tools_bundle_aapt2,
+        invoker.r_text_path,
+        invoker.proto_input_path,
+      ]
+      args = [
+        "--aapt2-path",
+        rebase_path(android_sdk_tools_bundle_aapt2, root_build_dir),
+        "--r-text-in",
+        rebase_path(invoker.r_text_path, root_build_dir),
+        "--proto-path",
+        rebase_path(invoker.proto_input_path, root_build_dir),
+        "--optimized-proto-path",
+        rebase_path(invoker.optimized_proto_output, root_build_dir),
+      ]
+
+      if (defined(invoker.resources_config_paths)) {
+        inputs += invoker.resources_config_paths
+        _rebased_resource_configs =
+            rebase_path(invoker.resources_config_paths, root_build_dir)
+        args += [ "--resources-config-paths=${_rebased_resource_configs}" ]
+      }
+
+      if (defined(invoker.short_resource_paths) &&
+          invoker.short_resource_paths) {
+        args += [ "--short-resource-paths" ]
+        if (defined(invoker.resources_path_map_out_path)) {
+          outputs += [ invoker.resources_path_map_out_path ]
+          args += [
+            "--resources-path-map-out-path",
+            rebase_path(invoker.resources_path_map_out_path, root_build_dir),
+          ]
+        }
+      }
+
+      if (defined(invoker.strip_resource_names) &&
+          invoker.strip_resource_names) {
+        args += [ "--strip-resource-names" ]
+      }
+    }
+  }
+
+  # A template that is used to find unused resources.
   template("unused_resources") {
-    _rebased_build_config = rebase_path(invoker.build_config, root_build_dir)
-    _shrinker_dep = "//build/android/gyp/resources_shrinker:resources_shrinker"
-    _shrinker_script = "$root_build_dir/bin/helper/resources_shrinker"
     action_with_pydeps(target_name) {
       forward_variables_from(invoker, TESTONLY_AND_VISIBILITY + [ "deps" ])
-      script = "//build/android/gyp/resources_shrinker/shrinker.py"
-      inputs = [
-        invoker.build_config,
-        invoker.proguard_mapping_path,
-        _shrinker_script,
-      ]
+      script = "//build/android/gyp/unused_resources.py"
+      depfile = "$target_gen_dir/${target_name}.d"
+      _unused_resources_script = "$root_build_dir/bin/helper/unused_resources"
+      inputs = [ _unused_resources_script ]
       outputs = [ invoker.output_config ]
       if (!defined(deps)) {
         deps = []
       }
-      deps += [ _shrinker_dep ]
+      deps += [ "//build/android/unused_resources:unused_resources" ]
+      _rebased_module_build_config =
+          rebase_path(invoker.build_config, root_build_dir)
       args = [
         "--script",
-        rebase_path(_shrinker_script, root_build_dir),
-        "--dependencies-res-zips=@FileArg($_rebased_build_config:deps_info:dependency_zips)",
-        "--proguard-mapping",
-        rebase_path(invoker.proguard_mapping_path, root_build_dir),
-        "--r-text=@FileArg($_rebased_build_config:deps_info:r_text_path)",
-        "--dex=@FileArg($_rebased_build_config:final_dex:path)",
-        "--android-manifest=@FileArg($_rebased_build_config:deps_info:android_manifest)",
+        rebase_path(_unused_resources_script, root_build_dir),
         "--output-config",
         rebase_path(invoker.output_config, root_build_dir),
+        "--r-text=@FileArg($_rebased_module_build_config:deps_info:r_text_path)",
+        "--dependencies-res-zips=@FileArg($_rebased_module_build_config:deps_info:dependency_zips)",
+        "--depfile",
+        rebase_path(depfile, root_build_dir),
       ]
+
+      if (defined(invoker.proguard_mapping_path)) {
+        inputs += [ invoker.proguard_mapping_path ]
+        args += [
+          "--proguard-mapping",
+          rebase_path(invoker.proguard_mapping_path, root_build_dir),
+        ]
+      }
+
+      foreach(_build_config, invoker.all_module_build_configs) {
+        inputs += [ _build_config ]
+        _rebased_build_config = rebase_path(_build_config, root_build_dir)
+        args += [
+          "--dexes=@FileArg($_rebased_build_config:final_dex:path)",
+          "--android-manifests=@FileArg($_rebased_build_config:deps_info:merged_android_manifest)",
+        ]
+      }
     }
   }
 
@@ -3077,7 +3114,7 @@
         "--jar-path=$_rebased_output_jar_path",
         "--java-srcjars=$_rebased_java_srcjars",
         "--target-name",
-        get_label_info(target_name, "label_no_toolchain"),
+        get_label_info(":${target_name}", "label_no_toolchain"),
       ]
 
       if (defined(invoker.header_jar_path)) {
@@ -3623,6 +3660,7 @@
             [
               "android_manifest",
               "android_manifest_dep",
+              "merged_android_manifest",
               "final_dex_path",
               "loadable_modules",
               "native_lib_placeholders",
diff --git a/build/config/android/rules.gni b/build/config/android/rules.gni
index d61fa88..6755d35 100644
--- a/build/config/android/rules.gni
+++ b/build/config/android/rules.gni
@@ -2080,6 +2080,8 @@
   #   uncompress_dex: Store final .dex files uncompressed in the apk.
   #   strip_resource_names: True if resource names should be stripped from the
   #     resources.arsc file in the apk or module.
+  #   strip_unused_resources: True if unused resources should be stripped from
+  #     the apk or module.
   #   short_resource_paths: True if resource paths should be shortened in the
   #     apk or module.
   #   resources_config_paths: List of paths to the aapt2 optimize config files
@@ -2169,17 +2171,6 @@
       _final_rtxt_path = "${_final_apk_path}.R.txt"
     }
 
-    _short_resource_paths =
-        defined(invoker.short_resource_paths) && invoker.short_resource_paths &&
-        enable_arsc_obfuscation
-    _strip_resource_names =
-        defined(invoker.strip_resource_names) && invoker.strip_resource_names &&
-        enable_arsc_obfuscation
-    _optimize_resources = _strip_resource_names || _short_resource_paths
-
-    if (!_is_bundle_module && _short_resource_paths) {
-      _final_pathmap_path = "${_final_apk_path}.pathmap.txt"
-    }
     _res_size_info_path = "$target_out_dir/$target_name.ap_.info"
     if (!_is_bundle_module) {
       _final_apk_path_no_ext_list =
@@ -2196,20 +2187,12 @@
     if (_is_bundle_module) {
       # Path to the intermediate proto-format resources zip file.
       _proto_resources_path = "$target_out_dir/$target_name.proto.ap_"
-      if (_optimize_resources) {
-        _optimized_proto_resources_path =
-            "$target_out_dir/$target_name.optimized.proto.ap_"
-      }
     } else {
       # resource_sizes.py needs to be able to find the unpacked resources.arsc
       # file based on apk name to compute normatlized size.
       _resource_sizes_arsc_path =
           "$root_out_dir/arsc/" +
           rebase_path(_final_apk_path_no_ext, root_build_dir) + ".ap_"
-      if (_optimize_resources) {
-        _optimized_arsc_resources_path =
-            "$target_out_dir/$target_name.optimized.ap_"
-      }
     }
 
     if (defined(invoker.version_code)) {
@@ -2452,11 +2435,6 @@
           "${_shared_resources_allowlist_target}__compile_resources"
     }
 
-    if (_short_resource_paths) {
-      _resources_path_map_out_path =
-          "${target_gen_dir}/${_template_name}_resources_path_map.txt"
-    }
-
     _compile_resources_target = "${_template_name}__compile_resources"
     _compile_resources_rtxt_out =
         "${target_gen_dir}/${_compile_resources_target}_R.txt"
@@ -2482,13 +2460,10 @@
                                "resource_exclusion_exceptions",
                                "resource_exclusion_regex",
                                "resource_values_filter_rules",
-                               "resources_config_paths",
                                "shared_resources",
                                "shared_resources_allowlist_locales",
                                "uses_split",
                              ])
-      short_resource_paths = _short_resource_paths
-      strip_resource_names = _strip_resource_names
       android_manifest = _android_manifest
       android_manifest_dep = ":$_merge_manifest_target"
       version_code = _version_code
@@ -2514,9 +2489,6 @@
       if (_enable_main_dex_list) {
         proguard_file_main_dex = _generated_proguard_main_dex_config
       }
-      if (_short_resource_paths) {
-        resources_path_map_out_path = _resources_path_map_out_path
-      }
 
       build_config = _build_config
       build_config_dep = ":$_build_config_target"
@@ -2553,9 +2525,6 @@
       if (_is_bundle_module) {
         is_bundle_module = true
         proto_output = _proto_resources_path
-        if (_optimize_resources) {
-          optimized_proto_output = _optimized_proto_resources_path
-        }
 
         if (defined(invoker.base_module_target)) {
           include_resource =
@@ -2563,8 +2532,6 @@
               "/" + get_label_info(invoker.base_module_target, "name") + ".ap_"
           _link_against = invoker.base_module_target
         }
-      } else if (_optimize_resources) {
-        optimized_arsc_output = _optimized_arsc_resources_path
       }
 
       if (defined(_link_against)) {
@@ -2587,16 +2554,53 @@
     }
     _srcjar_deps += [ ":$_compile_resources_target" ]
 
-    if (defined(_resource_sizes_arsc_path)) {
-      _copy_arsc_target = "${_template_name}__copy_arsc"
-      copy(_copy_arsc_target) {
-        deps = [ ":$_compile_resources_target" ]
+    # We don't ship apks anymore, only optimize bundle builds
+    if (_is_bundle_module) {
+      _short_resource_paths =
+          defined(invoker.short_resource_paths) &&
+          invoker.short_resource_paths && enable_arsc_obfuscation
+      _strip_resource_names =
+          defined(invoker.strip_resource_names) &&
+          invoker.strip_resource_names && enable_arsc_obfuscation
+      _strip_unused_resources = defined(invoker.strip_unused_resources) &&
+                                invoker.strip_unused_resources
+      _optimize_resources = _strip_resource_names || _short_resource_paths ||
+                            _strip_unused_resources
+    }
 
-        # resource_sizes.py doesn't care if it gets the optimized .arsc.
-        sources = [ _arsc_resources_path ]
-        outputs = [ _resource_sizes_arsc_path ]
+    if (_is_bundle_module && _optimize_resources) {
+      _optimized_proto_resources_path =
+          "$target_out_dir/$target_name.optimized.proto.ap_"
+      if (_short_resource_paths) {
+        _resources_path_map_out_path =
+            "${target_gen_dir}/${_template_name}_resources_path_map.txt"
       }
-      _final_deps += [ ":$_copy_arsc_target" ]
+      _optimize_resources_target = "${_template_name}__optimize_resources"
+      optimize_resources(_optimize_resources_target) {
+        deps = _deps + [ ":$_compile_resources_target" ]
+        short_resource_paths = _short_resource_paths
+        strip_resource_names = _strip_resource_names
+        if (_short_resource_paths) {
+          resources_path_map_out_path = _resources_path_map_out_path
+        }
+        r_text_path = _compile_resources_rtxt_out
+        proto_input_path = _proto_resources_path
+        optimized_proto_output = _optimized_proto_resources_path
+        if (_strip_unused_resources) {
+          # These need to be kept in sync with the target names + output paths
+          # in the android_app_bundle template.
+          _unused_resources_target = "${_template_name}__unused_resources"
+          _unused_resources_config_path =
+              "$target_gen_dir/${_template_name}_unused_resources.config"
+          resources_config_paths = [ _unused_resources_config_path ]
+          deps += [ ":$_unused_resources_target" ]
+        } else {
+          resources_config_paths = []
+        }
+        if (defined(invoker.resources_config_paths)) {
+          resources_config_paths += invoker.resources_config_paths
+        }
+      }
     }
 
     if (!_is_bundle_module) {
@@ -2613,20 +2617,18 @@
         outputs = [ _final_rtxt_path ]
       }
       _final_deps += [ ":$_copy_rtxt_target" ]
+    }
 
-      if (_short_resource_paths) {
-        # Do the same for path map
-        _copy_pathmap_target = "${_template_name}__copy_pathmap"
-        copy(_copy_pathmap_target) {
-          deps = [ ":$_compile_resources_target" ]
-          sources = [ _resources_path_map_out_path ]
-          outputs = [ _final_pathmap_path ]
+    if (defined(_resource_sizes_arsc_path)) {
+      _copy_arsc_target = "${_template_name}__copy_arsc"
+      copy(_copy_arsc_target) {
+        deps = [ ":$_compile_resources_target" ]
 
-          # The monochrome_public_apk_checker test needs pathmap when run on swarming.
-          data = [ _final_pathmap_path ]
-        }
-        _final_deps += [ ":$_copy_pathmap_target" ]
+        # resource_sizes.py doesn't care if it gets the optimized .arsc.
+        sources = [ _arsc_resources_path ]
+        outputs = [ _resource_sizes_arsc_path ]
       }
+      _final_deps += [ ":$_copy_arsc_target" ]
     }
 
     _generate_native_libraries_java =
@@ -2791,6 +2793,7 @@
       supports_android = true
       requires_android = true
       srcjar_deps = _srcjar_deps
+      merged_android_manifest = _android_manifest
       if (defined(_final_dex_path)) {
         final_dex_path = _final_dex_path
       }
@@ -3058,6 +3061,9 @@
                        ":$_build_config_target",
                        ":$_compile_resources_target",
                      ] + _all_native_libs_deps
+      if (_optimize_resources) {
+        _final_deps += [ ":$_optimize_resources_target" ]
+      }
       if (defined(_final_dex_target_dep)) {
         not_needed([ "_final_dex_target_dep" ])
       }
@@ -3201,11 +3207,7 @@
             deps += [ _final_dex_target_dep ]
           }
 
-          if (_optimize_resources) {
-            packaged_resources_path = _optimized_arsc_resources_path
-          } else {
-            packaged_resources_path = _arsc_resources_path
-          }
+          packaged_resources_path = _arsc_resources_path
 
           if (defined(_native_libs_filearg)) {
             native_libs_filearg = _native_libs_filearg
@@ -3484,7 +3486,6 @@
                                "resource_exclusion_regex",
                                "resource_ids_provider_dep",
                                "resource_values_filter_rules",
-                               "resources_config_paths",
                                "require_native_mocks",
                                "secondary_abi_loadable_modules",
                                "secondary_abi_shared_libraries",
@@ -3493,13 +3494,11 @@
                                "shared_resources",
                                "shared_resources_allowlist_locales",
                                "shared_resources_allowlist_target",
-                               "short_resource_paths",
                                "sources",
                                "srcjar_deps",
                                "static_library_dependent_targets",
                                "static_library_provider",
                                "static_library_synchronized_proguard",
-                               "strip_resource_names",
                                "target_sdk_version",
                                "testonly",
                                "uncompress_dex",
@@ -3627,6 +3626,7 @@
                                "static_library_provider",
                                "static_library_synchronized_proguard",
                                "strip_resource_names",
+                               "strip_unused_resources",
                                "target_sdk_version",
                                "testonly",
                                "uncompress_shared_libraries",
@@ -4735,6 +4735,7 @@
     _all_create_module_targets = []
     _all_module_zip_paths = []
     _all_module_build_configs = []
+    _all_module_unused_resources_deps = []
     foreach(_module, _modules) {
       _module_target = _module.module_target
       _module_build_config = _module.build_config
@@ -4753,7 +4754,6 @@
       # this file *must* be named ${_module.name}.zip
       _create_module_target = "${_target_name}__${_module.name}__create"
       _module_zip_path = "$target_gen_dir/$target_name/${_module.name}.zip"
-
       create_android_app_bundle_module(_create_module_target) {
         forward_variables_from(invoker,
                                [
@@ -4804,6 +4804,28 @@
       ]
       _all_module_zip_paths += [ _module_zip_path ]
       _all_module_build_configs += [ _module_build_config ]
+      _all_module_unused_resources_deps += [
+        "${_module_target}__compile_resources",
+        _dex_target_for_module,
+        _module_build_config_target,
+      ]
+    }
+    if (defined(invoker.strip_unused_resources) &&
+        invoker.strip_unused_resources) {
+      # Resources only live in the base module so we define the unused resources
+      # target only on the base module target.
+      _unused_resources_target = "${_base_target_name}__unused_resources"
+      _unused_resources_config =
+          "${_base_target_gen_dir}/${_base_target_name}_unused_resources.config"
+      unused_resources(_unused_resources_target) {
+        deps = _all_module_unused_resources_deps
+        all_module_build_configs = _all_module_build_configs
+        build_config = _base_module_build_config
+        if (_proguard_enabled) {
+          proguard_mapping_path = _proguard_mapping_path
+        }
+        output_config = _unused_resources_config
+      }
     }
 
     _all_rebased_module_zip_paths =
diff --git a/chrome/android/chrome_public_apk_tmpl.gni b/chrome/android/chrome_public_apk_tmpl.gni
index c485c30a..c5089dd 100644
--- a/chrome/android/chrome_public_apk_tmpl.gni
+++ b/chrome/android/chrome_public_apk_tmpl.gni
@@ -179,10 +179,23 @@
       png_to_webp = !is_java_debug
     }
 
-    # Removes metadata needed for Resources.getIdentifier("resource_name").
-    strip_resource_names = !is_java_debug
+    # We only optimize resources for bundles since APKs are not shipped.
+    # Resources only live in the base module atm as such we only need to set
+    # these on the base module
+    if (_is_bundle) {
+      # Removes metadata needed for Resources.getIdentifier("resource_name").
+      strip_resource_names = !is_java_debug
 
-    short_resource_paths = true
+      # Shortens resource file names in apk eg: res/drawable/button.xml -> res/a.xml
+      short_resource_paths = true
+
+      # Removes unused resources from the apk. Only enabled on official builds
+      # since it adds a slow step and serializes the build graph causing fewer
+      # expensive tasks (eg: proguarding, resource optimization) to be run in
+      # parallel by adding dependencies between them (adds around 10-20
+      # seconds on my machine).
+      strip_unused_resources = is_official_build
+    }
 
     if (!defined(aapt_locale_allowlist)) {
       # Include resource strings files only for supported locales.
@@ -539,13 +552,16 @@
         }
       }
 
-      # Resources config for blocklisting resource names from obfuscation
-      resources_config_paths = [
-        "//android_webview/aapt2.config",
-        "//chrome/android/aapt2.config",
-      ]
-      if (defined(invoker.resources_config_paths)) {
-        resources_config_paths += invoker.resources_config_paths
+      # We only optimize resources in bundles.
+      if (_is_bundle_module) {
+        # Resources config for blocklisting resource names from obfuscation
+        resources_config_paths = [
+          "//android_webview/aapt2.config",
+          "//chrome/android/aapt2.config",
+        ]
+        if (defined(invoker.resources_config_paths)) {
+          resources_config_paths += invoker.resources_config_paths
+        }
       }
 
       if (defined(invoker.never_incremental)) {
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
index 89da7c8..3dc78bf2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
@@ -190,12 +190,9 @@
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.browser.WebContentsAccessibility;
 import org.chromium.content_public.common.ContentSwitches;
-import org.chromium.content_public.common.Referrer;
-import org.chromium.content_public.common.ResourceRequestBody;
 import org.chromium.ui.base.PageTransition;
 import org.chromium.ui.modaldialog.ModalDialogManager;
 import org.chromium.ui.widget.Toast;
-import org.chromium.url.Origin;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -1337,10 +1334,8 @@
          * @param url The url from the intent.
          */
         @Override
-        public void processUrlViewIntent(String url, String referer, String headers,
-                @TabOpenType int tabOpenType, String externalAppId, int tabIdToBringToFront,
-                boolean hasUserGesture, boolean isRendererInitiated,
-                @Nullable Origin initiatorOrigin, Intent intent) {
+        public void processUrlViewIntent(LoadUrlParams loadUrlParams, @TabOpenType int tabOpenType,
+                String externalAppId, int tabIdToBringToFront, Intent intent) {
             if (isActivityFinishingOrDestroyed()) {
                 return;
             }
@@ -1350,13 +1345,11 @@
                 RecordUserAction.record("MobileTabbedModeViewIntentFromApp");
             }
 
+            final String url = loadUrlParams.getUrl();
             boolean fromLauncherShortcut = IntentUtils.safeGetBooleanExtra(
                     intent, IntentHandler.EXTRA_INVOKED_FROM_SHORTCUT, false);
             boolean focus = false;
 
-            LoadUrlParams loadUrlParams = createLoadUrlParamsForIntent(url, referer, hasUserGesture,
-                    mIntentHandlingTimeMs, intent, headers, isRendererInitiated, initiatorOrigin);
-
             TabModel tabModel = getCurrentTabModel();
             switch (tabOpenType) {
                 case TabOpenType.REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB:
@@ -1506,6 +1499,11 @@
         }
 
         @Override
+        public long getIntentHandlingTimeMs() {
+            return mIntentHandlingTimeMs;
+        }
+
+        @Override
         public void processWebSearchIntent(String query) {
             assert false;
         }
@@ -2132,51 +2130,6 @@
     }
 
     /**
-     * Create a LoadUrlParams for handling a VIEW intent.
-     */
-    private static LoadUrlParams createLoadUrlParamsForIntent(String url, String referer,
-            boolean hasUserGesture, long intentHandlingTimeMs, Intent intent, String headers,
-            boolean isRendererInitiated, @Nullable Origin initiatorOrigin) {
-        LoadUrlParams loadUrlParams = new LoadUrlParams(url);
-        loadUrlParams.setIntentReceivedTimestamp(intentHandlingTimeMs);
-        loadUrlParams.setHasUserGesture(hasUserGesture);
-        // Add FROM_API to ensure intent handling isn't used again. Without FROM_API Chrome could
-        // get stuck in a loop continually being asked to open a link, and then calling out to the
-        // system.
-        int transitionType = PageTransition.LINK | PageTransition.FROM_API;
-        loadUrlParams.setTransitionType(
-                IntentHandler.getTransitionTypeFromIntent(intent, transitionType));
-        if (referer != null) {
-            loadUrlParams.setReferrer(
-                    new Referrer(referer, IntentHandler.getReferrerPolicyFromIntent(intent)));
-        }
-
-        // Handle post data case.
-        if (IntentHandler.wasIntentSenderChrome(intent)) {
-            String postDataType =
-                    IntentUtils.safeGetStringExtra(intent, IntentHandler.EXTRA_POST_DATA_TYPE);
-            byte[] postData =
-                    IntentUtils.safeGetByteArrayExtra(intent, IntentHandler.EXTRA_POST_DATA);
-            if (!TextUtils.isEmpty(postDataType) && postData != null && postData.length != 0) {
-                StringBuilder appendToHeader = new StringBuilder();
-                appendToHeader.append("Content-Type: ");
-                appendToHeader.append(postDataType);
-                if (TextUtils.isEmpty(headers)) {
-                    headers = appendToHeader.toString();
-                } else {
-                    headers = headers + "\r\n" + appendToHeader.toString();
-                }
-
-                loadUrlParams.setPostData(ResourceRequestBody.createFromBytes(postData));
-            }
-        }
-        loadUrlParams.setVerbatimHeaders(headers);
-        loadUrlParams.setIsRendererInitiated(isRendererInitiated);
-        loadUrlParams.setInitiatorOrigin(initiatorOrigin);
-        return loadUrlParams;
-    }
-
-    /**
      * Launch a URL from an intent.
      *
      * @param url           The url from the intent.
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
index 7c26ddfd..75049e1 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
@@ -58,11 +58,11 @@
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.common.ContentUrlConstants;
 import org.chromium.content_public.common.Referrer;
+import org.chromium.content_public.common.ResourceRequestBody;
 import org.chromium.net.HttpUtil;
 import org.chromium.network.mojom.ReferrerPolicy;
 import org.chromium.ui.base.PageTransition;
 import org.chromium.url.GURL;
-import org.chromium.url.Origin;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -350,10 +350,13 @@
         /**
          * Processes a URL VIEW Intent.
          */
-        void processUrlViewIntent(String url, String referer, String headers,
-                @TabOpenType int tabOpenType, String externalAppId, int tabIdToBringToFront,
-                boolean hasUserGesture, boolean isRendererInitiated, Origin initiatorOrigin,
-                Intent intent);
+        void processUrlViewIntent(LoadUrlParams loadUrlParams, @TabOpenType int tabOpenType,
+                String externalAppId, int tabIdToBringToFront, Intent intent);
+
+        /**
+         * The time at which the Activity most recently received an Intent (eg onNewIntent).
+         */
+        long getIntentHandlingTimeMs();
 
         void processWebSearchIntent(String query);
 
@@ -495,8 +498,6 @@
 
         assert intentHasValidUrl(intent);
         String url = getUrlFromIntent(intent);
-        RequestMetadata metadata =
-                IntentWithRequestMetadataHandler.getInstance().getRequestMetadataAndClear(intent);
         @TabOpenType
         int tabOpenType = getTabOpenType(intent);
         int tabIdToBringToFront = getBringTabToFrontId(intent);
@@ -506,33 +507,24 @@
                     || TranslateIntentHandler.handleTranslateTabIntent(intent, mDelegate);
         }
 
-        String referrerUrl = getReferrerUrlIncludingExtraHeaders(intent);
-        String extraHeaders = getExtraHeadersFromIntent(intent);
+        LoadUrlParams loadUrlParams = createLoadUrlParamsForIntent(url, intent);
 
         if (isIntentForMhtmlFileOrContent(intent) && tabOpenType == TabOpenType.OPEN_NEW_TAB
-                && referrerUrl == null && extraHeaders == null) {
+                && loadUrlParams.getReferrer() == null
+                && loadUrlParams.getVerbatimHeaders() == null) {
             handleMhtmlFileOrContentIntent(url, intent);
             return true;
         }
-
-        processUrlViewIntent(url, referrerUrl, extraHeaders, tabOpenType,
+        processUrlViewIntent(loadUrlParams, tabOpenType,
                 IntentUtils.safeGetStringExtra(intent, Browser.EXTRA_APPLICATION_ID),
-                tabIdToBringToFront, metadata == null ? false : metadata.hasUserGesture(),
-                metadata == null ? false : metadata.isRendererInitiated(),
-                metadata == null ? null : metadata.getInitiatorOrigin(), intent);
+                tabIdToBringToFront, intent);
         return true;
     }
 
-    private void processUrlViewIntent(String url, String referrerUrl, String extraHeaders,
-            @TabOpenType int tabOpenType, String externalAppId, int tabIdToBringToFront,
-            boolean hasUserGesture, boolean isRendererInitiated, Origin initiatorOrigin,
-            Intent intent) {
-        extraHeaders = maybeAddAdditionalExtraHeaders(intent, url, extraHeaders);
-
-        // TODO(joth): Presumably this should check the action too.
-        mDelegate.processUrlViewIntent(url, referrerUrl, extraHeaders, tabOpenType,
-                IntentUtils.safeGetStringExtra(intent, Browser.EXTRA_APPLICATION_ID),
-                tabIdToBringToFront, hasUserGesture, isRendererInitiated, initiatorOrigin, intent);
+    private void processUrlViewIntent(LoadUrlParams loadUrlParams, @TabOpenType int tabOpenType,
+            String externalAppId, int tabIdToBringToFront, Intent intent) {
+        mDelegate.processUrlViewIntent(
+                loadUrlParams, tabOpenType, externalAppId, tabIdToBringToFront, intent);
         recordExternalIntentSourceUMA(intent);
         recordAppHandlersForIntent(intent);
     }
@@ -721,8 +713,10 @@
 
     private void handleMhtmlFileOrContentIntent(final String url, final Intent intent) {
         OfflinePageUtils.getLoadUrlParamsForOpeningMhtmlFileOrContent(url, (loadUrlParams) -> {
-            processUrlViewIntent(loadUrlParams.getUrl(), null, loadUrlParams.getVerbatimHeaders(),
-                    TabOpenType.OPEN_NEW_TAB, null, 0, false, false, null, intent);
+            loadUrlParams.setVerbatimHeaders(maybeAddAdditionalContentHeaders(
+                    intent, url, loadUrlParams.getVerbatimHeaders()));
+            processUrlViewIntent(
+                    loadUrlParams, TabOpenType.OPEN_NEW_TAB, null, Tab.INVALID_TAB_ID, intent);
         }, Profile.getLastUsedRegularProfile());
     }
 
@@ -1196,7 +1190,7 @@
     }
 
     @VisibleForTesting
-    static String maybeAddAdditionalExtraHeaders(Intent intent, String url, String extraHeaders) {
+    static String maybeAddAdditionalContentHeaders(Intent intent, String url, String extraHeaders) {
         // For some apps, ContentResolver.getType(contentUri) returns "application/octet-stream",
         // instead of the registered MIME type when opening a document from Downloads. To work
         // around this, we pass the intent type in extra headers such that content request job can
@@ -1493,6 +1487,56 @@
                 intentHasUnsafeInternalScheme(scheme, url, intent));
     }
 
+    /**
+     * Create a LoadUrlParams for handling a VIEW intent.
+     */
+    public LoadUrlParams createLoadUrlParamsForIntent(String url, Intent intent) {
+        LoadUrlParams loadUrlParams = new LoadUrlParams(url);
+        RequestMetadata metadata =
+                IntentWithRequestMetadataHandler.getInstance().getRequestMetadataAndClear(intent);
+
+        loadUrlParams.setIntentReceivedTimestamp(mDelegate.getIntentHandlingTimeMs());
+        loadUrlParams.setHasUserGesture(metadata == null ? false : metadata.hasUserGesture());
+        // Add FROM_API to ensure intent handling isn't used again. Without FROM_API Chrome could
+        // get stuck in a loop continually being asked to open a link, and then calling out to the
+        // system.
+        int transitionType = PageTransition.LINK | PageTransition.FROM_API;
+        loadUrlParams.setTransitionType(getTransitionTypeFromIntent(intent, transitionType));
+        String referrer = getReferrerUrlIncludingExtraHeaders(intent);
+        if (referrer != null) {
+            loadUrlParams.setReferrer(
+                    new Referrer(referrer, IntentHandler.getReferrerPolicyFromIntent(intent)));
+        }
+
+        String headers = getExtraHeadersFromIntent(intent);
+        headers = maybeAddAdditionalContentHeaders(intent, url, headers);
+
+        // Handle post data case.
+        if (IntentHandler.wasIntentSenderChrome(intent)) {
+            String postDataType =
+                    IntentUtils.safeGetStringExtra(intent, IntentHandler.EXTRA_POST_DATA_TYPE);
+            byte[] postData =
+                    IntentUtils.safeGetByteArrayExtra(intent, IntentHandler.EXTRA_POST_DATA);
+            if (!TextUtils.isEmpty(postDataType) && postData != null && postData.length != 0) {
+                StringBuilder appendToHeader = new StringBuilder();
+                appendToHeader.append("Content-Type: ");
+                appendToHeader.append(postDataType);
+                if (TextUtils.isEmpty(headers)) {
+                    headers = appendToHeader.toString();
+                } else {
+                    headers = headers + "\r\n" + appendToHeader.toString();
+                }
+
+                loadUrlParams.setPostData(ResourceRequestBody.createFromBytes(postData));
+            }
+        }
+        loadUrlParams.setVerbatimHeaders(headers);
+        loadUrlParams.setIsRendererInitiated(
+                metadata == null ? false : metadata.isRendererInitiated());
+        loadUrlParams.setInitiatorOrigin(metadata == null ? null : metadata.getInitiatorOrigin());
+        return loadUrlParams;
+    }
+
     @NativeMethods
     interface Natives {
         boolean isCorsSafelistedHeader(String name, String value);
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/LaunchIntentDispatcher.java b/chrome/android/java/src/org/chromium/chrome/browser/LaunchIntentDispatcher.java
index 792d5512..b22464e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/LaunchIntentDispatcher.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/LaunchIntentDispatcher.java
@@ -51,8 +51,8 @@
 import org.chromium.chrome.browser.webapps.WebappLauncherActivity;
 import org.chromium.components.browser_ui.media.MediaNotificationUma;
 import org.chromium.components.embedder_support.util.UrlConstants;
+import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.ui.widget.Toast;
-import org.chromium.url.Origin;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -247,13 +247,17 @@
     }
 
     @Override
-    public void processUrlViewIntent(String url, String referer, String headers,
-            @IntentHandler.TabOpenType int tabOpenType, String externalAppId,
-            int tabIdToBringToFront, boolean hasUserGesture, boolean isRendererInitiated,
-            @Nullable Origin initiatorOrigin, Intent intent) {
+    public void processUrlViewIntent(LoadUrlParams loadUrlParams, int tabOpenType,
+            String externalAppId, int tabIdToBringToFront, Intent intent) {
         assert false;
     }
 
+    @Override
+    public long getIntentHandlingTimeMs() {
+        assert false;
+        return 0;
+    }
+
     /** When started with an intent, maybe pre-resolve the domain. */
     private void maybePrefetchDnsInBackground() {
         if (mIntent != null && Intent.ACTION_VIEW.equals(mIntent.getAction())) {
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java
index 0108f1ff..8eb04e2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java
@@ -231,7 +231,6 @@
 import org.chromium.ui.modaldialog.ModalDialogManager;
 import org.chromium.ui.widget.Toast;
 import org.chromium.url.GURL;
-import org.chromium.url.Origin;
 import org.chromium.webapk.lib.client.WebApkNavigationClient;
 
 import java.util.ArrayList;
@@ -1734,14 +1733,18 @@
             }
 
             @Override
+            public long getIntentHandlingTimeMs() {
+                return 0;
+            }
+
+            @Override
             public void processTranslateTabIntent(
                     @Nullable String targetLanguageCode, @Nullable String expectedUrl) {}
 
             @Override
-            public void processUrlViewIntent(String url, String referer, String headers,
+            public void processUrlViewIntent(LoadUrlParams loadUrlParams,
                     @TabOpenType int tabOpenType, String externalAppId, int tabIdToBringToFront,
-                    boolean hasUserGesture, boolean isRendererInitiated,
-                    @Nullable Origin initiatorOrigin, Intent intent) {}
+                    Intent intent) {}
         };
     }
 
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegateImpl.java b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegateImpl.java
index 5e8ef79..514c8108 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegateImpl.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegateImpl.java
@@ -15,6 +15,7 @@
 
 import org.chromium.base.ApplicationState;
 import org.chromium.base.ApplicationStatus;
+import org.chromium.base.Callback;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.Function;
 import org.chromium.base.IntentUtils;
@@ -187,6 +188,18 @@
     }
 
     @Override
+    public boolean hasCustomLeavingIncognitoDialog() {
+        return false;
+    }
+
+    @Override
+    public void presentLeavingIncognitoDialog(Callback<Boolean> onUserDecision) {
+        // This should never be called due to returning false in
+        // hasCustomLeavingIncognitoDialog().
+        assert false;
+    }
+
+    @Override
     public void maybeAdjustInstantAppExtras(Intent intent, boolean isIntentToInstantApp) {
         if (isIntentToInstantApp) {
             intent.putExtra(InstantAppsHandler.IS_GOOGLE_SEARCH_REFERRER, true);
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencer.java b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencer.java
index 6fd29fa..4708fae6 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencer.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencer.java
@@ -71,7 +71,7 @@
      */
     public void start() {
         long childAccountStatusStart = SystemClock.elapsedRealtime();
-        AccountManagerFacadeProvider.getInstance().tryGetGoogleAccounts(accounts -> {
+        AccountManagerFacadeProvider.getInstance().getAccounts().then(accounts -> {
             ChildAccountService.checkChildAccountStatus(accounts, status -> {
                 RecordHistogram.recordTimesHistogram("MobileFre.ChildAccountStatusDuration",
                         SystemClock.elapsedRealtime() - childAccountStatusStart);
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunUtils.java
index 6fc4156..0cd50a2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunUtils.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunUtils.java
@@ -19,6 +19,7 @@
 import org.chromium.chrome.browser.util.ChromeAccessibilityUtil;
 import org.chromium.components.signin.AccountManagerFacade;
 import org.chromium.components.signin.AccountManagerFacadeProvider;
+import org.chromium.components.signin.AccountUtils;
 
 /** Provides first run related utility functions. */
 public class FirstRunUtils {
@@ -93,7 +94,10 @@
 
     @VisibleForTesting
     static boolean hasGoogleAccounts() {
-        return !AccountManagerFacadeProvider.getInstance().tryGetGoogleAccounts().isEmpty();
+        return !AccountUtils
+                        .getAccountsIfFulfilledOrEmpty(
+                                AccountManagerFacadeProvider.getInstance().getAccounts())
+                        .isEmpty();
     }
 
     @SuppressLint("InlinedApi")
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarContainer.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarContainer.java
index befa5d9..a1d5fb70 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarContainer.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarContainer.java
@@ -93,12 +93,14 @@
         @Override
         public void onDidStartNavigation(Tab tab, NavigationHandle navigationHandle) {
             // Make sure Y translation is reset on navigation.
-            if (mInfoBarContainerView != null) mInfoBarContainerView.setTranslationY(0);
+            if (mInfoBarContainerView != null && navigationHandle.isInPrimaryMainFrame()) {
+                mInfoBarContainerView.setTranslationY(0);
+            }
         }
 
         @Override
         public void onDidFinishNavigation(Tab tab, NavigationHandle navigation) {
-            if (navigation.hasCommitted() && navigation.isInMainFrame()) {
+            if (navigation.hasCommitted() && navigation.isInPrimaryMainFrame()) {
                 setHidden(false);
             }
         }
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/init/StartupTabPreloader.java b/chrome/android/java/src/org/chromium/chrome/browser/init/StartupTabPreloader.java
index 7c5f4293..a6468a3d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/init/StartupTabPreloader.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/init/StartupTabPreloader.java
@@ -31,9 +31,6 @@
 import org.chromium.components.url_formatter.UrlFormatter;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
-import org.chromium.content_public.common.Referrer;
-import org.chromium.network.mojom.ReferrerPolicy;
-import org.chromium.ui.base.PageTransition;
 import org.chromium.ui.base.WindowAndroid;
 import org.chromium.url.GURL;
 
@@ -193,14 +190,7 @@
         WebContents webContents =
                 WebContentsFactory.createWebContents(Profile.getLastUsedRegularProfile(), false);
 
-        mLoadUrlParams = new LoadUrlParams(url.getValidSpecOrEmpty());
-        String referrer = IntentHandler.getReferrerUrlIncludingExtraHeaders(intent);
-        if (referrer != null && !referrer.isEmpty()) {
-            mLoadUrlParams.setReferrer(new Referrer(referrer, ReferrerPolicy.DEFAULT));
-        }
-        int transition = IntentHandler.getTransitionTypeFromIntent(
-                intent, PageTransition.LINK | PageTransition.FROM_API);
-        mLoadUrlParams.setTransitionType(transition);
+        mLoadUrlParams = mIntentHandler.createLoadUrlParamsForIntent(url.getSpec(), intent);
 
         // Create a detached tab, but don't add it to the tab model yet. We'll do that
         // later if the loadUrlParams etc... match.
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/signin/SyncConsentFragmentBase.java b/chrome/android/java/src/org/chromium/chrome/browser/signin/SyncConsentFragmentBase.java
index 2d39b8f..618decb 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/signin/SyncConsentFragmentBase.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/signin/SyncConsentFragmentBase.java
@@ -326,11 +326,8 @@
         mConsentTextTracker.setText(mView.getTitleView(), R.string.signin_title);
 
         mConsentTextTracker.setText(mView.getSyncTitleView(), R.string.signin_sync_title);
-        final @StringRes int syncDescription =
-                mChildAccountStatus == ChildAccountStatus.REGULAR_CHILD
-                ? R.string.signin_sync_description_child_account
-                : R.string.signin_sync_description;
-        mConsentTextTracker.setText(mView.getSyncDescriptionView(), syncDescription);
+        mConsentTextTracker.setText(
+                mView.getSyncDescriptionView(), R.string.signin_sync_description);
 
         final @StringRes int refuseButtonTextId =
                 mSigninAccessPoint == SigninAccessPoint.SIGNIN_PROMO
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/sync/settings/ManageSyncSettings.java b/chrome/android/java/src/org/chromium/chrome/browser/sync/settings/ManageSyncSettings.java
index c2ce9a7..e017909c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/sync/settings/ManageSyncSettings.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/sync/settings/ManageSyncSettings.java
@@ -241,11 +241,6 @@
             type.setOnPreferenceChangeListener(this);
         }
 
-        if (profile.isChild()) {
-            mGoogleActivityControls.setSummary(
-                    R.string.sign_in_google_activity_controls_summary_child_account);
-        }
-
         // Prevent sync settings changes from taking effect until the user leaves this screen.
         mSyncSetupInProgressHandle = mSyncService.getSetupInProgressHandle();
 
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/IntentHandlerUnitTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/IntentHandlerUnitTest.java
index 269d74f..ebb272b 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/IntentHandlerUnitTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/IntentHandlerUnitTest.java
@@ -482,44 +482,44 @@
     @Test
     @SmallTest
     @Feature({"Android-AppBase"})
-    public void testMaybeAddAdditionalExtraHeaders() {
+    public void testmaybeAddAdditionalContentHeaders() {
         String contentUrl = "content://com.example.org/document/1";
         Intent intent = new Intent();
 
-        Assert.assertNull(IntentHandler.maybeAddAdditionalExtraHeaders(null, null, null));
+        Assert.assertNull(IntentHandler.maybeAddAdditionalContentHeaders(null, null, null));
         // Null URL.
-        Assert.assertNull(IntentHandler.maybeAddAdditionalExtraHeaders(intent, null, null));
+        Assert.assertNull(IntentHandler.maybeAddAdditionalContentHeaders(intent, null, null));
         // Null intent.
-        Assert.assertNull(IntentHandler.maybeAddAdditionalExtraHeaders(null, contentUrl, null));
+        Assert.assertNull(IntentHandler.maybeAddAdditionalContentHeaders(null, contentUrl, null));
         // Null type.
-        Assert.assertNull(IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, null));
+        Assert.assertNull(IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, null));
         // Empty type.
         intent.setType("");
-        Assert.assertNull(IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, null));
+        Assert.assertNull(IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, null));
 
         // Type not used by MHTML.
         intent.setType("text/plain");
-        Assert.assertNull(IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, null));
+        Assert.assertNull(IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, null));
 
         // MHTML type with no extra headers.
         intent.setType("multipart/related");
         Assert.assertEquals("X-Chrome-intent-type: multipart/related",
-                IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, null));
+                IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, null));
 
         // MHTML type with extra headers.
         intent.setType("multipart/related");
         Assert.assertEquals("Foo: bar\nX-Chrome-intent-type: multipart/related",
-                IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, "Foo: bar"));
+                IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, "Foo: bar"));
 
         // Different MHTML type.
         intent.setType("message/rfc822");
         Assert.assertEquals("X-Chrome-intent-type: message/rfc822",
-                IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, null));
+                IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, null));
 
         // Different MHTML type with extra headers.
         intent.setType("message/rfc822");
         Assert.assertEquals("Foo: bar\nX-Chrome-intent-type: message/rfc822",
-                IntentHandler.maybeAddAdditionalExtraHeaders(intent, contentUrl, "Foo: bar"));
+                IntentHandler.maybeAddAdditionalContentHeaders(intent, contentUrl, "Foo: bar"));
     }
 
     @Test
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
index bd88725d..ce33d695 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
@@ -31,8 +31,6 @@
 import org.junit.Test;
 import org.junit.rules.TestRule;
 import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Captor;
 import org.mockito.Mock;
 import org.mockito.Mockito;
 import org.mockito.MockitoAnnotations;
@@ -41,6 +39,7 @@
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.Callback;
 import org.chromium.base.CollectionUtil;
+import org.chromium.base.Promise;
 import org.chromium.base.task.PostTask;
 import org.chromium.base.test.util.CallbackHelper;
 import org.chromium.base.test.util.Criteria;
@@ -106,8 +105,7 @@
     @Mock
     private AccountManagerFacade mAccountManagerFacade;
 
-    @Captor
-    private ArgumentCaptor<Callback<List<Account>>> mGetGoogleAccountsCaptor;
+    private Promise<List<Account>> mAccountsPromise;
 
     private final Set<Class> mSupportedActivities =
             CollectionUtil.newHashSet(ChromeLauncherActivity.class, FirstRunActivity.class,
@@ -324,14 +322,18 @@
     }
 
     private void blockOnFlowIsKnown() {
+        TestThreadUtils.runOnUiThreadBlocking(() -> {
+            Assert.assertNull("mAccountsPromise is already initialized!", mAccountsPromise);
+            mAccountsPromise = new Promise<>();
+        });
+        Mockito.when(mAccountManagerFacade.getAccounts()).thenReturn(mAccountsPromise);
         AccountManagerFacadeProvider.setInstanceForTests(mAccountManagerFacade);
     }
 
     private void unblockOnFlowIsKnown() {
-        Mockito.verify(mAccountManagerFacade)
-                .tryGetGoogleAccounts(mGetGoogleAccountsCaptor.capture());
+        Mockito.verify(mAccountManagerFacade).getAccounts();
         TestThreadUtils.runOnUiThreadBlocking(
-                () -> mGetGoogleAccountsCaptor.getValue().onResult(Collections.emptyList()));
+                () -> mAccountsPromise.fulfill(Collections.emptyList()));
     }
 
     @Test
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunUtilsTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunUtilsTest.java
index 0b23f57..232830a49 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunUtilsTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunUtilsTest.java
@@ -79,7 +79,8 @@
         addTestAccount();
 
         ContextUtils.initApplicationContextForTests(mAccountTestingContext);
-        Assert.assertTrue(FirstRunUtils.hasGoogleAccounts());
+        TestThreadUtils.runOnUiThreadBlocking(
+                () -> { Assert.assertTrue(FirstRunUtils.hasGoogleAccounts()); });
         Assert.assertTrue(FirstRunUtils.hasGoogleAccountAuthenticator());
     }
 
@@ -92,7 +93,8 @@
         setUpAccountManager("Not A Google Account");
 
         ContextUtils.initApplicationContextForTests(mAccountTestingContext);
-        Assert.assertFalse(FirstRunUtils.hasGoogleAccounts());
+        TestThreadUtils.runOnUiThreadBlocking(
+                () -> { Assert.assertFalse(FirstRunUtils.hasGoogleAccounts()); });
         Assert.assertFalse(FirstRunUtils.hasGoogleAccountAuthenticator());
     }
 }
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/infobar/InfoBarTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/infobar/InfoBarTest.java
index f9b7c21..58baa232 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/infobar/InfoBarTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/infobar/InfoBarTest.java
@@ -43,6 +43,7 @@
 import org.chromium.chrome.test.batch.BlankCTATabInitialStateRule;
 import org.chromium.chrome.test.util.InfoBarTestAnimationListener;
 import org.chromium.chrome.test.util.InfoBarUtil;
+import org.chromium.chrome.test.util.InfoBarUtil.InfoBarMatcher;
 import org.chromium.chrome.test.util.browser.Features.DisableFeatures;
 import org.chromium.chrome.test.util.browser.Features.EnableFeatures;
 import org.chromium.chrome.test.util.browser.LocationSettingsTestUtil;
@@ -483,17 +484,28 @@
         });
         mListener.addInfoBarAnimationFinished("InfoBar not added");
 
-        // Make sure it has Kill/Wait buttons.
-        List<InfoBar> infoBars = sActivityTestRule.getInfoBars();
-        Assert.assertEquals("Wrong infobar count", 1, infoBars.size());
-        Assert.assertTrue(InfoBarUtil.hasPrimaryButton(infoBars.get(0)));
-        Assert.assertTrue(InfoBarUtil.hasSecondaryButton(infoBars.get(0)));
+        CriteriaHelper.pollUiThread(() -> {
+            final List<InfoBar> infoBars = sActivityTestRule.getInfoBars();
+            InfoBarMatcher matcher =
+                    new InfoBarMatcher(InfoBarIdentifier.HUNG_RENDERER_INFOBAR_DELEGATE_ANDROID);
+            Criteria.checkThat(infoBars, Matchers.hasItem(matcher));
+
+            // Make sure it has Kill/Wait buttons.
+            Assert.assertTrue(InfoBarUtil.hasPrimaryButton(matcher.mLastMatch));
+            Assert.assertTrue(InfoBarUtil.hasSecondaryButton(matcher.mLastMatch));
+        });
 
         // Fake a responsive renderer signal.
         PostTask.runOrPostTask(UiThreadTaskTraits.DEFAULT,
                 () -> { getTabWebContentsDelegate().rendererResponsive(); });
         mListener.removeInfoBarAnimationFinished("InfoBar not removed.");
-        Assert.assertTrue("Wrong infobar count", sActivityTestRule.getInfoBars().isEmpty());
+
+        CriteriaHelper.pollUiThread(() -> {
+            final List<InfoBar> infoBars = sActivityTestRule.getInfoBars();
+            InfoBarMatcher matcher =
+                    new InfoBarMatcher(InfoBarIdentifier.HUNG_RENDERER_INFOBAR_DELEGATE_ANDROID);
+            Criteria.checkThat(infoBars, Matchers.not(Matchers.hasItem(matcher)));
+        });
     }
 
     /**
@@ -512,19 +524,22 @@
         });
         mListener.addInfoBarAnimationFinished("InfoBar not added");
 
-        // Make sure it has Kill/Wait buttons.
-        final List<InfoBar> infoBars = sActivityTestRule.getInfoBars();
-        Assert.assertEquals("Wrong infobar count", 1, infoBars.size());
-        Assert.assertTrue(InfoBarUtil.hasPrimaryButton(infoBars.get(0)));
-        Assert.assertTrue(InfoBarUtil.hasSecondaryButton(infoBars.get(0)));
+        CriteriaHelper.pollUiThread(() -> {
+            final List<InfoBar> infoBars = sActivityTestRule.getInfoBars();
+            InfoBarMatcher matcher =
+                    new InfoBarMatcher(InfoBarIdentifier.HUNG_RENDERER_INFOBAR_DELEGATE_ANDROID);
+            Criteria.checkThat(infoBars, Matchers.hasItem(matcher));
 
-        // Activate the Kill button.
-        PostTask.runOrPostTask(UiThreadTaskTraits.DEFAULT,
-                () -> { InfoBarUtil.clickPrimaryButton(infoBars.get(0)); });
+            // Make sure it has Kill/Wait buttons.
+            Assert.assertTrue(InfoBarUtil.hasPrimaryButton(matcher.mLastMatch));
+            Assert.assertTrue(InfoBarUtil.hasSecondaryButton(matcher.mLastMatch));
+
+            // Activate the Kill button.
+            InfoBarUtil.clickPrimaryButton(matcher.mLastMatch);
+        });
 
         // The renderer should have been killed and the InfoBar removed.
         mListener.removeInfoBarAnimationFinished("InfoBar not removed.");
-        Assert.assertTrue("Wrong infobar count", sActivityTestRule.getInfoBars().isEmpty());
         CriteriaHelper.pollUiThread(() -> {
             return SadTab.isShowing(sActivityTestRule.getActivity().getActivityTab());
         }, MAX_TIMEOUT, CHECK_INTERVAL);
diff --git a/chrome/android/modules/chrome_bundle_tmpl.gni b/chrome/android/modules/chrome_bundle_tmpl.gni
index 18233436..e2c5808 100644
--- a/chrome/android/modules/chrome_bundle_tmpl.gni
+++ b/chrome/android/modules/chrome_bundle_tmpl.gni
@@ -168,6 +168,9 @@
     is_multi_abi = _is_multi_abi
     validate_services = _enable_chrome_module
 
+    # For this to be respected, it must also be set on the base module target.
+    strip_unused_resources = is_official_build
+
     # List of DFMs that are installed by default by wrapper scripts, to make
     # testing easier. This removes the need to manually specify, e.g.,
     # "-m dev_ui" on every install or run.
diff --git a/chrome/android/webapk/OWNERS b/chrome/android/webapk/OWNERS
index c78bfecd..3c94597 100644
--- a/chrome/android/webapk/OWNERS
+++ b/chrome/android/webapk/OWNERS
@@ -1,4 +1 @@
-hanxi@chromium.org
-pkotwicz@chromium.org
-yfriedman@chromium.org
-hartmanng@chromium.org
+file://chrome/android/java/src/org/chromium/chrome/browser/webapps/OWNERS
\ No newline at end of file
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 604fb83..ac299bee 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -11125,6 +11125,17 @@
       Close Incognito
     </message>
 
+    <!-- Incognito Clear Browsing Data dialog bubble. -->
+    <message name="IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_PRIMARY_TEXT" desc ="The primary text of the clear browsing data dialog which is shown in Incognito when users invokes a clear browsing data action in Incognito. The text describes how Incognito users can clear the browsing data by closing all Incognito windows.">
+      To clear data, close all Incognito windows
+    </message>
+    <message name="IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_SECONDARY_TEXT" desc ="The secondary text of the clear browsing data dialog which is shown in Incognito when users invokes a clear browsing data action in Incognito. The text describes how the clear browsing data action affects only the Incognito windows.">
+      This only affects Incognito windows
+    </message>
+    <message name="IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_CLOSE_WINDOWS_BUTTON" desc = "The text of the button offering to close all Incognito windows in the dialog.">
+      Close windows
+    </message>
+
    <!-- Guest Profile Menu bubble. -->
    <message name="IDS_GUEST_WINDOW_COUNT_MESSAGE" desc="The message showing the number of open guest windows. This is not used for zero windows.[ICU Syntax]">
       {0, plural,
diff --git a/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_CLOSE_WINDOWS_BUTTON.png.sha1 b/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_CLOSE_WINDOWS_BUTTON.png.sha1
new file mode 100644
index 0000000..6b995ac
--- /dev/null
+++ b/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_CLOSE_WINDOWS_BUTTON.png.sha1
@@ -0,0 +1 @@
+9269352bcc153c8bf5c44cf42d47b2d1f1bd03cb
\ No newline at end of file
diff --git a/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_PRIMARY_TEXT.png.sha1 b/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_PRIMARY_TEXT.png.sha1
new file mode 100644
index 0000000..6b995ac
--- /dev/null
+++ b/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_PRIMARY_TEXT.png.sha1
@@ -0,0 +1 @@
+9269352bcc153c8bf5c44cf42d47b2d1f1bd03cb
\ No newline at end of file
diff --git a/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_SECONDARY_TEXT.png.sha1 b/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_SECONDARY_TEXT.png.sha1
new file mode 100644
index 0000000..6b995ac
--- /dev/null
+++ b/chrome/app/generated_resources_grd/IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_SECONDARY_TEXT.png.sha1
@@ -0,0 +1 @@
+9269352bcc153c8bf5c44cf42d47b2d1f1bd03cb
\ No newline at end of file
diff --git a/chrome/app/resources/generated_resources_ar.xtb b/chrome/app/resources/generated_resources_ar.xtb
index b8cad52a..c4e163e 100644
--- a/chrome/app/resources/generated_resources_ar.xtb
+++ b/chrome/app/resources/generated_resources_ar.xtb
@@ -1897,6 +1897,7 @@
 <translation id="3027296729579831126">تفعيل ميزة "المشاركة عن قرب"</translation>
 <translation id="3029466929721441205">عرض أدوات قلم الشاشة في الرفّ</translation>
 <translation id="3030311804857586740">{NUM_DAYS,plural, =1{يطلُب <ph name="MANAGER" /> منك تنزيل تحديث الجهاز اليوم. وسيتم تنزيل التحديث تلقائيًا عند الاتصال بالإنترنت.}zero{يطلُب <ph name="MANAGER" /> منك تنزيل تحديث الجهاز قبل الموعد النهائي. وسيتم تنزيل التحديث تلقائيًا عند الاتصال بالإنترنت.}two{يطلُب <ph name="MANAGER" /> منك تنزيل تحديث الجهاز قبل الموعد النهائي. وسيتم تنزيل التحديث تلقائيًا عند الاتصال بالإنترنت.}few{يطلُب <ph name="MANAGER" /> منك تنزيل تحديث الجهاز قبل الموعد النهائي. وسيتم تنزيل التحديث تلقائيًا عند الاتصال بالإنترنت.}many{يطلُب <ph name="MANAGER" /> منك تنزيل تحديث الجهاز قبل الموعد النهائي. وسيتم تنزيل التحديث تلقائيًا عند الاتصال بالإنترنت.}other{يطلُب <ph name="MANAGER" /> منك تنزيل تحديث الجهاز قبل الموعد النهائي. وسيتم تنزيل التحديث تلقائيًا عند الاتصال بالإنترنت.}}</translation>
+<translation id="3030967311408872958">من غروب الشمس إلى شروقها</translation>
 <translation id="3031417829280473749">‏الوكيل X</translation>
 <translation id="3031557471081358569">اختيار العناصر المراد استيرادها:</translation>
 <translation id="3036327949511794916">لقد انتهت مهلة إرجاع جهاز <ph name="DEVICE_TYPE" /> هذا.</translation>
@@ -4074,6 +4075,7 @@
 <translation id="5502500733115278303">تمّ الاستيراد من متصفّح فايرفوكس</translation>
 <translation id="5502915260472117187">طفل</translation>
 <translation id="5503982651688210506">مواصلة السماح للمضيف <ph name="HOST" /> باستخدام الكاميرا وتحريكها واستخدام الميكروفون</translation>
+<translation id="5504909642107847870">مراجعة إعدادات الخصوصية والأمان</translation>
 <translation id="5505264765875738116">منع المواقع الإلكترونية من طلب إرسال إشعارات</translation>
 <translation id="5505307013568720083">نفد الحبر</translation>
 <translation id="5505794066310932198">‏إيقاف/تفعيل Commander</translation>
@@ -4901,6 +4903,7 @@
 <translation id="6444909401984215022"><ph name="WINDOW_TITLE" /> - يتم البحث عن جهاز يتضمّن بلوتوث</translation>
 <translation id="6445450263907939268">إذا كنت لا تريد هذه التغييرات، فيمكنك استعادة الإعدادات السابقة.</translation>
 <translation id="6446213738085045933">إنشاء اختصار على سطح المكتب</translation>
+<translation id="6447210166804596538">مراجعة أهم عناصر التحكّم في الخصوصية والأمان من مكان واحد</translation>
 <translation id="6447842834002726250">ملفّات تعريف الارتباط</translation>
 <translation id="6450876761651513209">تغيير الإعدادات المتعلقة بالخصوصية</translation>
 <translation id="6451591602925140504">{NUM_PAGES,plural, =0{<ph name="PAGE_TITLE" />}=1{<ph name="PAGE_TITLE" /> وعلامة تبويب واحدة إضافية}two{<ph name="PAGE_TITLE" /> وعلامَتا تبويب إضافيتان}few{<ph name="PAGE_TITLE" /> و# علامات تبويب إضافية}many{<ph name="PAGE_TITLE" /> و# علامة تبويب إضافية}other{<ph name="PAGE_TITLE" /> و# علامة تبويب إضافية}}</translation>
@@ -6883,6 +6886,7 @@
 <translation id="8655972064210167941">فشل تسجيل الدخول، نظرًا لعدم القدرة على التحقق من كلمة مرورك، يُرجى الاتصال بالمسؤول أو إعادة المحاولة.</translation>
 <translation id="8657393004602556571">هل تريد تجاهل الملاحظات؟</translation>
 <translation id="8658645149275195032">يشارك <ph name="APP_NAME" /> الشاشة والصوت من خلال <ph name="TAB_NAME" />.</translation>
+<translation id="8660073998956001352">محرّكات البحث</translation>
 <translation id="8661290697478713397">ف&amp;تح رابط في نافذة التصفح المتخفي</translation>
 <translation id="8662671328352114214">الانضمام إلى شبكة <ph name="TYPE" /></translation>
 <translation id="8662795692588422978">الأشخاص</translation>
@@ -7073,6 +7077,7 @@
 <translation id="8845001906332463065">الحصول على مساعدة</translation>
 <translation id="8846132060409673887">قراءة نموذج هذا الكمبيوتر والشركة المصنِّعة</translation>
 <translation id="8846163936679269230">‏إعادة ضبط الملفات الشخصية لبطاقة eSIM</translation>
+<translation id="8846746259444262774">تعذّر تثبيت التطبيق.</translation>
 <translation id="8847523528195140327">تسجيل الخروج عند غلق الغلاف</translation>
 <translation id="8847988622838149491">USB</translation>
 <translation id="8849001918648564819">مخفي</translation>
diff --git a/chrome/app/resources/generated_resources_en-GB.xtb b/chrome/app/resources/generated_resources_en-GB.xtb
index 8a182f2c..f53fa94 100644
--- a/chrome/app/resources/generated_resources_en-GB.xtb
+++ b/chrome/app/resources/generated_resources_en-GB.xtb
@@ -1229,6 +1229,7 @@
 <translation id="2300383962156589922">Customise and control <ph name="APP_NAME" /></translation>
 <translation id="2300578660547687840">Keyboard shortcuts for search keywords</translation>
 <translation id="2301382460326681002">Extension root directory is invalid.</translation>
+<translation id="2301402091755573488">Shared tab</translation>
 <translation id="23030561267973084">"<ph name="EXTENSION_NAME" />" has requested additional permissions.</translation>
 <translation id="23055578400314116">Select a username</translation>
 <translation id="2307462900900812319">Configure network</translation>
@@ -1506,6 +1507,7 @@
 <translation id="2612676031748830579">Card number</translation>
 <translation id="2613535083491958306"><ph name="ORIGIN" /> will be able to edit <ph name="FILENAME" /></translation>
 <translation id="2616366145935564096">Read and change your data on <ph name="WEBSITE_1" /></translation>
+<translation id="2618274688675613222">Activate the Next button to continue the setup or the Previous button to change the 'Select' switch assignment.</translation>
 <translation id="2618797463720777311">Set up Nearby Share</translation>
 <translation id="2619761439309613843">Daily Refresh</translation>
 <translation id="2620215283731032047"><ph name="FILE_NAME" /> can't be downloaded securely.</translation>
@@ -2902,6 +2904,7 @@
 <translation id="4120817667028078560">Path too long</translation>
 <translation id="4124823734405044952">Your security key has been reset</translation>
 <translation id="4124935795427217608">Unicorn</translation>
+<translation id="4126916490446791914">Auto-scan enabled</translation>
 <translation id="412730574613779332">Speedy</translation>
 <translation id="4130199216115862831">Device Log</translation>
 <translation id="4130207949184424187">This extension has changed the page that is shown when you search from the Omnibox.</translation>
@@ -3285,6 +3288,7 @@
     If your child uses a Chromebook in school and you wish to mirror the school experience at home to ensure that your child has access to all necessary schoolwork, please sign out of this Family Link account and sign in to the school account from the Chrome OS accounts page (note: Family Link parental controls will not apply).&lt;br&gt;&lt;br&gt;
     If your child does not use a Chromebook in school or if you prefer to manage your child’s experience at home using Family Link, please click the Next button below to add a school account to this profile.</translation>
 <translation id="4576541033847873020">Pair Bluetooth device</translation>
+<translation id="4576763597586015380">To continue saving passwords in your Google Account, verify that it’s you</translation>
 <translation id="4579453506923101210">Forget connected phone</translation>
 <translation id="4579581181964204535">Unable to cast <ph name="HOST_NAME" />.</translation>
 <translation id="4581774856936278355">Error while restoring Linux</translation>
@@ -5005,6 +5009,7 @@
 <translation id="6538098297809675636">Error detecting code</translation>
 <translation id="653920215766444089">Searching for pointing device</translation>
 <translation id="654039047105555694"><ph name="BEGIN_BOLD" />Note:<ph name="END_BOLD" /> Only enable if you know what you are doing or if you have been asked to do so, as collection of data may reduce performance.</translation>
+<translation id="6540672086173674880">Google may use your browsing history to personalise Search and other Google services. You can change this at any time at myaccount.google.com/activitycontrols/search</translation>
 <translation id="6541638731489116978">This site has been blocked from accessing your motion sensors.</translation>
 <translation id="6545665334409411530">Repeat rate</translation>
 <translation id="6545864417968258051">Bluetooth scanning</translation>
@@ -5890,6 +5895,7 @@
 <translation id="754207240458482646">Synced with other devices on your account. <ph name="LINK_BEGIN" />Learn more<ph name="LINK_END" /></translation>
 <translation id="7543104066686362383">Enable debugging features on this <ph name="IDS_SHORT_PRODUCT_NAME" /> device</translation>
 <translation id="7543525346216957623">Ask your parent</translation>
+<translation id="7546012169463147344">Auto-scan will automatically cycle through and focus on items on the screen.‏ When an item is focused, press the 'Select' key that you just assigned to activate it.</translation>
 <translation id="7547317915858803630">Warning: your <ph name="PRODUCT_NAME" /> settings are stored on a network drive. This may result in slowdowns, crashes or even loss of data.</translation>
 <translation id="7548856833046333824">Fizzy</translation>
 <translation id="7550830279652415241">bookmarks_<ph name="DATESTAMP" />.html</translation>
@@ -6860,6 +6866,7 @@
 <translation id="8621866727807194849">There's harmful software on your computer. Chrome is removing it, restoring your settings and disabling extensions. This will make your browser work normally again.</translation>
 <translation id="8621979332865976405">Share your entire screen</translation>
 <translation id="8624354461147303341">Get discounts</translation>
+<translation id="8624944202475729958"><ph name="PROFILE_NAME" />: <ph name="ERROR_DESCRIPTION" /></translation>
 <translation id="862542460444371744">&amp;Extensions</translation>
 <translation id="8625663000550647058">Not allowed to use your microphone</translation>
 <translation id="8625916342247441948">Don't allow sites to connect to HID devices</translation>
@@ -6924,6 +6931,7 @@
 <translation id="8677212948402625567">Collapse all...</translation>
 <translation id="867767487203716855">Next update</translation>
 <translation id="8677859815076891398">No albums. Create an album in <ph name="LINK_BEGIN" />Google Photos<ph name="LINK_END" />.</translation>
+<translation id="8678538439778360739">Data was encrypted with your sync passphrase on <ph name="TIME" />. This doesn't include payment methods and addresses from Google Pay.</translation>
 <translation id="8678582529642151449">Tabs don't shrink</translation>
 <translation id="8678933587484842200">How would you like this application to launch?</translation>
 <translation id="8680251145628383637">Sign in to get your bookmarks, history, passwords and other settings on all your devices. You'll also automatically be signed in to your Google services.</translation>
diff --git a/chrome/app/resources/generated_resources_sq.xtb b/chrome/app/resources/generated_resources_sq.xtb
index 11e8b48..eca09b7 100644
--- a/chrome/app/resources/generated_resources_sq.xtb
+++ b/chrome/app/resources/generated_resources_sq.xtb
@@ -1889,6 +1889,7 @@
 <translation id="3027296729579831126">Aktivizo "Ndarjen në afërsi"</translation>
 <translation id="3029466929721441205">Shfaq veglat e stilolapsit në raft</translation>
 <translation id="3030311804857586740">{NUM_DAYS,plural, =1{<ph name="MANAGER" /> kërkon që të shkarkosh një përditësim sot. Përditësimi do të shkarkohet automatikisht kur të lidhesh me internetin.}other{<ph name="MANAGER" /> kërkon që të shkarkosh një përditësim para afatit. Përditësimi do të shkarkohet automatikisht kur të lidhesh me internetin.}}</translation>
+<translation id="3030967311408872958">Nga perëndimi në agim</translation>
 <translation id="3031417829280473749">Agjenti X</translation>
 <translation id="3031557471081358569">Përzgjidh artikujt për të importuar:</translation>
 <translation id="3036327949511794916">Afati për ta kthyer këtë pajisje <ph name="DEVICE_TYPE" /> ka kaluar.</translation>
@@ -4068,6 +4069,7 @@
 <translation id="5502500733115278303">Importuar nga Firefox</translation>
 <translation id="5502915260472117187">Një fëmijë</translation>
 <translation id="5503982651688210506">Vazhdo të lejosh që <ph name="HOST" /> të përdorë dhe të lëvizë kamerën dhe të përdorë mikrofonin</translation>
+<translation id="5504909642107847870">Shqyrtimi i privatësisë dhe sigurisë</translation>
 <translation id="5505264765875738116">Sajtet nuk mund të kërkojnë të dërgojnë njoftime</translation>
 <translation id="5505307013568720083">Nuk ka bojë</translation>
 <translation id="5505794066310932198">Aktivizo/çaktivizo Commander</translation>
@@ -4895,6 +4897,7 @@
 <translation id="6444909401984215022"><ph name="WINDOW_TITLE" /> - Skanimi i Bluetooth-it është aktiv</translation>
 <translation id="6445450263907939268">Nëse nuk i dëshiron këto ndryshime, mund të restaurosh cilësimet e mëparshme.</translation>
 <translation id="6446213738085045933">Krijo shkurtoren në desktop</translation>
+<translation id="6447210166804596538">Shqyrtoji komandat më të rëndësishme të privatësisë dhe të sigurisë në një vend</translation>
 <translation id="6447842834002726250">Kukit</translation>
 <translation id="6450876761651513209">Ndrysho cilësimet që lidhen me privatësinë</translation>
 <translation id="6451591602925140504">{NUM_PAGES,plural, =0{<ph name="PAGE_TITLE" />}=1{<ph name="PAGE_TITLE" /> dhe 1 skedë tjetër}other{<ph name="PAGE_TITLE" /> dhe # skeda të tjera}}</translation>
@@ -6874,6 +6877,7 @@
 <translation id="8655972064210167941">Identifikimi dështoi pasi fjalëkalimi nuk mund të verifikohej. Kontakto me administratorin ose provo përsëri.</translation>
 <translation id="8657393004602556571">Dëshiron të heqësh komentin?</translation>
 <translation id="8658645149275195032"><ph name="APP_NAME" /> po ndan ekranin tënd dhe audion me <ph name="TAB_NAME" />.</translation>
+<translation id="8660073998956001352">Motorët e tu të kërkimit</translation>
 <translation id="8661290697478713397">Hape lidhjen në një dritare të fshe&amp;htë</translation>
 <translation id="8662671328352114214">Bashkohu në rrjetin <ph name="TYPE" /></translation>
 <translation id="8662795692588422978">Kontaktet</translation>
@@ -7060,6 +7064,7 @@
 <translation id="8845001906332463065">Kërko ndihmë</translation>
 <translation id="8846132060409673887">Lexo informacionet për prodhuesin dhe modelin e këtij kompjuteri</translation>
 <translation id="8846163936679269230">Rivendos profilet e kartës eSIM</translation>
+<translation id="8846746259444262774">Instalimi dështoi</translation>
 <translation id="8847523528195140327">Dil nga llogaria kur mbyllet kapaku</translation>
 <translation id="8847988622838149491">USB</translation>
 <translation id="8849001918648564819">E fshehur</translation>
diff --git a/chrome/app/resources/generated_resources_uz.xtb b/chrome/app/resources/generated_resources_uz.xtb
index 0b06f3d0..9b3f474e 100644
--- a/chrome/app/resources/generated_resources_uz.xtb
+++ b/chrome/app/resources/generated_resources_uz.xtb
@@ -1216,6 +1216,7 @@
 <translation id="2300383962156589922"><ph name="APP_NAME" /> ilovasini sozlash va boshqarish</translation>
 <translation id="2300578660547687840">Kalit soʻzlarni qidirish uchun tezkor tugmalar</translation>
 <translation id="2301382460326681002">Kengaytma tub katalogi noto‘g‘ri.</translation>
+<translation id="2301402091755573488">Ulashilgan varaq</translation>
 <translation id="23030561267973084">“<ph name="EXTENSION_NAME" />” kengaytmasi qo‘shimcha ruxsatnomalar so‘radi.</translation>
 <translation id="23055578400314116">Foydalanuvchini tanlang</translation>
 <translation id="2307462900900812319">Tarmoqni sozlash</translation>
@@ -1493,6 +1494,7 @@
 <translation id="2612676031748830579">Karta raqami</translation>
 <translation id="2613535083491958306"><ph name="ORIGIN" /> sayti <ph name="FILENAME" /> faylini tahrirlay oladi</translation>
 <translation id="2616366145935564096">Ma’lumotlarni o‘qish va o‘zgartirish: <ph name="WEBSITE_1" /></translation>
+<translation id="2618274688675613222">Sozlashda davom etish uchun Keyingi tugmasini yoki “Tanlash” kalit tugmasini oʻzgartirish uchun Avvalgi tugmasini faollashtiring.</translation>
 <translation id="2618797463720777311">Nearby Share’ni sozlash</translation>
 <translation id="2619761439309613843">Kundalik yangilash</translation>
 <translation id="2620215283731032047"><ph name="FILE_NAME" /> faylini xavfsiz yuklab olish imkonsiz.</translation>
@@ -2889,6 +2891,7 @@
 <translation id="4120817667028078560">Yo‘lak haddan tashqari uzun</translation>
 <translation id="4124823734405044952">Elektron kalit sozlamalari qayta tiklandi</translation>
 <translation id="4124935795427217608">Bir shoxli ot</translation>
+<translation id="4126916490446791914">Avtomatik skanerlash yoniq</translation>
 <translation id="412730574613779332">Superqahramon</translation>
 <translation id="4130199216115862831">Qurilma jurnali</translation>
 <translation id="4130207949184424187">Bu kengaytma omniboks orqali qidiruv so‘rovini kiritganda ishlatiladigan birlamchi qidiruv tizimini o‘zgartirdi.</translation>
@@ -3272,6 +3275,7 @@
     Agar farzandingiz Chromebookni maktabda ishlatsa va uyda ham shunday sharoit yaratmoqchi boʻlsangiz, Chrome OS hisoblar sahifasida joriy Family Link hisobidan chiqib, maktab hisobiga kiring (eslatma: Family Link ota-ona nazorati maktab hisobida ishlamaydi).&lt;br&gt;&lt;br&gt;
     Agar farzandingiz Chromebookni maktabda ishlatmasa yoki farzandingiz undan faqat uyda Family Link orqali foydalanishini istasangiz, quyidagi Keyingisi tugmasini bosing va bu profilga maktab hisobini kiriting.</translation>
 <translation id="4576541033847873020">Bluetooth qurilma ulash</translation>
+<translation id="4576763597586015380">Parollarni Google hisobingizga saqlashda davom etish uchun shaxsingizni tasdiqlang</translation>
 <translation id="4579453506923101210">Ulangan telefonni oʻchirish</translation>
 <translation id="4579581181964204535"><ph name="HOST_NAME" /> translatsiya qilinmadi.</translation>
 <translation id="4581774856936278355">Linux tiklanmadi</translation>
@@ -4992,6 +4996,8 @@
 <translation id="6538098297809675636">Kod aniqlanmadi</translation>
 <translation id="653920215766444089">Ishora qurilmasi qidirilmoqda</translation>
 <translation id="654039047105555694"><ph name="BEGIN_BOLD" />Eslatma:<ph name="END_BOLD" /> Ushbu funksiya faqat zarurligida yoqilsin, chunki ma’lumotlarni yig‘ish jarayoni unumdorlikni pasaytirishi mumkin.</translation>
+<translation id="6540672086173674880">Google brauzer tarixidan qidiruv va boshqa Google xizmatlarini sizga moslashtirish 
+maqsadlarida foydalanishi mumkin. Bu ruxsatni myaccount.google.com/activitycontrols/search sahifasidan boshqarishingiz mumkin.</translation>
 <translation id="6541638731489116978">Bu sayt uchun harakat sensorlaridan foydalanish taqiqlandi</translation>
 <translation id="6545665334409411530">Takrorlash tezligi</translation>
 <translation id="6545864417968258051">Bluetooth qurilmalarni qidirish</translation>
@@ -5877,6 +5883,7 @@
 <translation id="754207240458482646">Hisobingizdagi boshqa qurilmalarga sinxronlandi. <ph name="LINK_BEGIN" />Batafsil<ph name="LINK_END" /></translation>
 <translation id="7543104066686362383"><ph name="IDS_SHORT_PRODUCT_NAME" /> qurilmasida tuzatish funksiyalarini yoqish.</translation>
 <translation id="7543525346216957623">Ota-onangizdan so‘rang</translation>
+<translation id="7546012169463147344">Avtomatik skanerlash funksiyasi ekrandagi elementlarni avtomatik almashtiradi va fokuslaydi. Kerakli element fokuslanganda uni faollashtirish uchun “Tanlash” tugmasini bosing.</translation>
 <translation id="7547317915858803630">Diqqat! <ph name="PRODUCT_NAME" /> sozlamalari tarmoq diskiga saqlanmoqda. Bu ish faoliyatini sekinlashtirishi, ishdan chiqarishi yoki ma’lumotlarning o‘chib ketishiga olib kelishi mumkin.</translation>
 <translation id="7548856833046333824">Limonad</translation>
 <translation id="7550830279652415241">bookmarks_<ph name="DATESTAMP" />.html</translation>
@@ -6845,6 +6852,7 @@
 <translation id="8621866727807194849">Kompyuteringizda zararli dasturlar topildi. Chrome uni tozalab, sozlamalarni qayta tiklaydi, kengaytmalarni oʻchirib qoʻyadi. Keyin brauzeringiz yana nuqsonsiz ishlay boshlaydi.</translation>
 <translation id="8621979332865976405">Butun ekranni namoyish qilish</translation>
 <translation id="8624354461147303341">Chegirmalar olish</translation>
+<translation id="8624944202475729958"><ph name="PROFILE_NAME" />: <ph name="ERROR_DESCRIPTION" /></translation>
 <translation id="862542460444371744">&amp;Kengaytmalar</translation>
 <translation id="8625663000550647058">Mikrofondan foydalanish taqiqlangan</translation>
 <translation id="8625916342247441948">Saytlarga HID qurilmalarga ulanishni taqiqlash</translation>
@@ -6909,6 +6917,7 @@
 <translation id="8677212948402625567">Barchasini yig‘ish...</translation>
 <translation id="867767487203716855">Keyingi yangilanish</translation>
 <translation id="8677859815076891398">Albomlar mavjud emas. <ph name="LINK_BEGIN" />Google Photos<ph name="LINK_END" /> orqali albom yarating.</translation>
+<translation id="8678538439778360739">Maʼlumotlaringiz <ph name="TIME" /> sanasida kodli ibora bilan shifrlangan. Google Pay manzillari va toʻlov usullari esa shifrlanmagan.</translation>
 <translation id="8678582529642151449">Varaqlar kichraymaydi</translation>
 <translation id="8678933587484842200">Bu ilova qanday ishga tushirilsin?</translation>
 <translation id="8680251145628383637">Xatcho‘plar, tarix va boshqa sozlamalaringizni barcha qurilmalaringizda sinxronlash uchun o‘z hisobingizga kiring. Tizimga kirish birdaniga barcha Google xizmatlarida amalga oshadi.</translation>
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index d6c2ef4..a0a4530 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -703,8 +703,6 @@
     "media/output_protection_proxy.h",
     "media/webrtc/audio_debug_recordings_handler.cc",
     "media/webrtc/audio_debug_recordings_handler.h",
-    "media/webrtc/camera_pan_tilt_zoom_permission_context.cc",
-    "media/webrtc/camera_pan_tilt_zoom_permission_context.h",
     "media/webrtc/desktop_media_list.h",
     "media/webrtc/desktop_media_list_base.cc",
     "media/webrtc/desktop_media_list_base.h",
diff --git a/chrome/browser/about_flags_browsertest.cc b/chrome/browser/about_flags_browsertest.cc
index 7b9d9b9..ef0487e 100644
--- a/chrome/browser/about_flags_browsertest.cc
+++ b/chrome/browser/about_flags_browsertest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "chrome/browser/about_flags.h"
+
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ -9,7 +11,6 @@
 #include "base/test/scoped_feature_list.h"
 #include "build/build_config.h"
 #include "build/chromeos_buildflags.h"
-#include "chrome/browser/about_flags.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/unexpire_flags.h"
@@ -136,14 +137,17 @@
 const std::vector<flags_ui::FeatureEntry> GetFeatureEntries(
     const std::string& unexpire_name) {
   std::vector<flags_ui::FeatureEntry> entries = {
-      {kFlagName, "name-1", "description-1", -1,
+      {kFlagName, "name-1", "description-1", static_cast<unsigned short>(-1),
        ORIGIN_LIST_VALUE_TYPE(kSwitchName, "")},
-      {kExpiredFlagName, "name-2", "description-2", -1,
+      {kExpiredFlagName, "name-2", "description-2",
+       static_cast<unsigned short>(-1),
        SINGLE_VALUE_TYPE(kExpiredFlagSwitchName)},
-      {kFlagWithOptionSelectorName, "name-3", "description-3", -1,
+      {kFlagWithOptionSelectorName, "name-3", "description-3",
+       static_cast<unsigned short>(-1),
        SINGLE_VALUE_TYPE(kFlagWithOptionSelectorSwitchName)}};
   flags_ui::FeatureEntry expiry_entry = {
-      unexpire_name.c_str(), "unexpire name", "unexpire desc", -1,
+      unexpire_name.c_str(), "unexpire name", "unexpire desc",
+      static_cast<unsigned short>(-1),
       SINGLE_VALUE_TYPE("unexpire-dummy-switch")};
   entries.push_back(expiry_entry);
   return entries;
diff --git a/chrome/browser/ash/login/saml/in_session_password_change_manager.cc b/chrome/browser/ash/login/saml/in_session_password_change_manager.cc
index 5c884ec7..445eb972 100644
--- a/chrome/browser/ash/login/saml/in_session_password_change_manager.cc
+++ b/chrome/browser/ash/login/saml/in_session_password_change_manager.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ash/login/saml/in_session_password_change_manager.h"
 
+#include "ash/constants/ash_features.h"
 #include "ash/public/cpp/session/session_activation_observer.h"
 #include "ash/public/cpp/session/session_controller.h"
 #include "base/feature_list.h"
@@ -12,6 +13,7 @@
 #include "base/task/task_traits.h"
 #include "chrome/browser/ash/login/auth/chrome_cryptohome_authenticator.h"
 #include "chrome/browser/ash/login/login_pref_names.h"
+#include "chrome/browser/ash/login/saml/password_change_success_notification.h"
 #include "chrome/browser/ash/login/saml/password_expiry_notification.h"
 #include "chrome/browser/ash/profiles/profile_helper.h"
 #include "chrome/browser/browser_process.h"
@@ -158,7 +160,7 @@
 // static
 std::unique_ptr<InSessionPasswordChangeManager>
 InSessionPasswordChangeManager::CreateIfEnabled(Profile* primary_profile) {
-  if (base::FeatureList::IsEnabled(features::kInSessionPasswordChange) &&
+  if (base::FeatureList::IsEnabled(::features::kInSessionPasswordChange) &&
       primary_profile->GetPrefs()->GetBoolean(
           prefs::kSamlInSessionPasswordChangeEnabled)) {
     std::unique_ptr<InSessionPasswordChangeManager> manager =
@@ -410,6 +412,9 @@
   DismissExpiryNotification();
   PasswordChangeDialog::Dismiss();
   ConfirmPasswordChangeDialog::Dismiss();
+  if (ash::features::IsSamlNotificationOnPasswordChangeSuccessEnabled()) {
+    PasswordChangeSuccessNotification::Show(primary_profile_);
+  }
   // We request a new sync token. It will be updated locally and signal the fact
   // of password change to other devices owned by the user.
   CreateTokenAsync();
diff --git a/chrome/browser/ash/login/saml/password_change_success_notification.cc b/chrome/browser/ash/login/saml/password_change_success_notification.cc
new file mode 100644
index 0000000..b09ff84
--- /dev/null
+++ b/chrome/browser/ash/login/saml/password_change_success_notification.cc
@@ -0,0 +1,93 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ash/login/saml/password_change_success_notification.h"
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "ash/public/cpp/notification_utils.h"
+#include "base/no_destructor.h"
+#include "chrome/browser/notifications/notification_display_service.h"
+#include "chrome/browser/notifications/notification_display_service_factory.h"
+#include "chromeos/strings/grit/chromeos_strings.h"
+#include "components/vector_icons/vector_icons.h"
+#include "content/public/browser/browser_thread.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/message_center/public/cpp/notification.h"
+#include "ui/message_center/public/cpp/notification_delegate.h"
+
+using message_center::Notification;
+using message_center::NotificationDelegate;
+using message_center::NotificationType;
+using message_center::NotifierId;
+using message_center::NotifierType;
+using message_center::RichNotificationData;
+using message_center::SystemNotificationWarningLevel;
+
+namespace chromeos {
+
+namespace {
+
+// Unique ID for this notification.
+const char kNotificationId[] = "saml.password-change-success-notification";
+
+// Simplest type of notification UI - no progress bars, images etc.
+const NotificationType kNotificationType =
+    message_center::NOTIFICATION_TYPE_SIMPLE;
+
+// Generic type for notifications that are not from web pages etc.
+const NotificationHandler::Type kNotificationHandlerType =
+    NotificationHandler::Type::TRANSIENT;
+
+// The icon to use for this notification - looks like an office building.
+const gfx::VectorIcon& kIcon = vector_icons::kBusinessIcon;
+
+// Warning level of WARNING makes the title orange.
+constexpr SystemNotificationWarningLevel kWarningLevel =
+    SystemNotificationWarningLevel::WARNING;
+
+}  // namespace
+
+// static
+void PasswordChangeSuccessNotification::Show(Profile* profile) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  // NotifierId for histogram reporting.
+  static const base::NoDestructor<NotifierId> kNotifierId(
+      message_center::NotifierType::SYSTEM_COMPONENT, kNotificationId);
+
+  // Leaving this empty means the notification is attributed to the system -
+  // ie "Chromium OS" or similar.
+  static const base::NoDestructor<std::u16string> kEmptyDisplaySource;
+
+  // No origin URL is needed since the notification comes from the system.
+  static const base::NoDestructor<GURL> kEmptyOriginUrl;
+
+  const std::u16string title =
+      l10n_util::GetStringUTF16(IDS_PASSWORD_CHANGE_NOTIFICATION_TITLE);
+
+  const std::u16string body =
+      l10n_util::GetStringUTF16(IDS_PASSWORD_CHANGE_NOTIFICATION_BODY);
+
+  RichNotificationData rich_notification_data;
+
+  const scoped_refptr<message_center::NotificationDelegate> delegate =
+      base::MakeRefCounted<message_center::NotificationDelegate>();
+
+  std::unique_ptr<Notification> notification = ash::CreateSystemNotification(
+      kNotificationType, kNotificationId, title, body, *kEmptyDisplaySource,
+      *kEmptyOriginUrl, *kNotifierId, rich_notification_data, delegate, kIcon,
+      kWarningLevel);
+
+  NotificationDisplayService* nds =
+      NotificationDisplayServiceFactory::GetForProfile(profile);
+  // Calling close before display ensures that the notification pops up again
+  // even if it is already shown.
+  nds->Close(kNotificationHandlerType, kNotificationId);
+  nds->Display(kNotificationHandlerType, *notification, /*metadata=*/nullptr);
+}
+
+}  // namespace chromeos
diff --git a/chrome/browser/ash/login/saml/password_change_success_notification.h b/chrome/browser/ash/login/saml/password_change_success_notification.h
new file mode 100644
index 0000000..52c3882
--- /dev/null
+++ b/chrome/browser/ash/login/saml/password_change_success_notification.h
@@ -0,0 +1,25 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_ASH_LOGIN_SAML_PASSWORD_CHANGE_SUCCESS_NOTIFICATION_H_
+#define CHROME_BROWSER_ASH_LOGIN_SAML_PASSWORD_CHANGE_SUCCESS_NOTIFICATION_H_
+
+#include <string>
+
+#include "base/time/time.h"
+
+class Profile;
+
+namespace chromeos {
+
+// Utility functions to show a password change success notification.
+class PasswordChangeSuccessNotification {
+ public:
+  // Shows a password change success notification.
+  static void Show(Profile* profile);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_ASH_LOGIN_SAML_PASSWORD_CHANGE_SUCCESS_NOTIFICATION_H_
diff --git a/chrome/browser/ash/login/saml/password_change_success_notification_unittest.cc b/chrome/browser/ash/login/saml/password_change_success_notification_unittest.cc
new file mode 100644
index 0000000..d309664
--- /dev/null
+++ b/chrome/browser/ash/login/saml/password_change_success_notification_unittest.cc
@@ -0,0 +1,51 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ash/login/saml/password_change_success_notification.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "base/test/task_environment.h"
+#include "chrome/browser/notifications/notification_display_service_impl.h"
+#include "chrome/browser/notifications/notification_display_service_tester.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/test/browser_task_environment.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using message_center::Notification;
+
+namespace chromeos {
+
+namespace {
+
+inline std::u16string utf16(const char* ascii) {
+  return base::ASCIIToUTF16(ascii);
+}
+
+class PasswordChangeSuccessNotificationTest : public testing::Test {
+ protected:
+  absl::optional<Notification> Notification() {
+    return NotificationDisplayServiceTester::Get()->GetNotification(
+        "saml.password-change-success-notification");
+  }
+
+  content::BrowserTaskEnvironment task_environment_;
+  TestingProfile profile_;
+  NotificationDisplayServiceTester display_service_tester_{&profile_};
+};
+
+}  // namespace
+
+TEST_F(PasswordChangeSuccessNotificationTest, ShowPasswordChangeSuccess) {
+  PasswordChangeSuccessNotification::Show(&profile_);
+  ASSERT_TRUE(Notification().has_value());
+
+  EXPECT_EQ(utf16("Chrome OS password updated"), Notification()->title());
+  EXPECT_EQ(utf16("Your password change was successful. Please use the new "
+                  "password from now on."),
+            Notification()->message());
+}
+
+}  // namespace chromeos
diff --git a/chrome/browser/ash/scanning/scan_service_unittest.cc b/chrome/browser/ash/scanning/scan_service_unittest.cc
index d0fdf37..8e3922e5 100644
--- a/chrome/browser/ash/scanning/scan_service_unittest.cc
+++ b/chrome/browser/ash/scanning/scan_service_unittest.cc
@@ -10,9 +10,11 @@
 #include <string>
 #include <vector>
 
+#include "ash/constants/ash_features.h"
 #include "ash/content/scanning/mojom/scanning.mojom-test-utils.h"
 #include "ash/content/scanning/mojom/scanning.mojom.h"
 #include "base/containers/flat_set.h"
+#include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ -73,6 +75,15 @@
 // Email used for test profile.
 constexpr char kUserEmail[] = "user@email.com";
 
+// Translation from file type to saved file extension.
+const std::map<mojo_ipc::FileType, std::string> kFileTypes = {
+    {mojo_ipc::FileType::kJpg, "jpg"},
+    {mojo_ipc::FileType::kPdf, "pdf"},
+    {mojo_ipc::FileType::kPng, "png"},
+    // Temporarily set searchable pdfs to follow png pipeline while
+    // implementing.
+    {mojo_ipc::FileType::kSearchablePdf, "png"}};
+
 // Returns a DocumentSource object.
 lorgnette::DocumentSource CreateLorgnetteDocumentSource() {
   lorgnette::DocumentSource source;
@@ -110,23 +121,6 @@
   return caps;
 }
 
-// Returns a vector of FilePaths to mimic saved scans.
-std::vector<base::FilePath> CreateSavedScanPaths(
-    const base::FilePath& dir,
-    const base::Time::Exploded& scan_time,
-    const std::string& type,
-    int num_pages_to_scan) {
-  std::vector<base::FilePath> file_paths;
-  file_paths.reserve(num_pages_to_scan);
-  for (int i = 1; i <= num_pages_to_scan; i++) {
-    file_paths.push_back(dir.Append(base::StringPrintf(
-        "scan_%02d%02d%02d-%02d%02d%02d_%d.%s", scan_time.year, scan_time.month,
-        scan_time.day_of_month, scan_time.hour, scan_time.minute,
-        scan_time.second, i, type.c_str())));
-  }
-  return file_paths;
-}
-
 // Returns single FilePath to mimic saved PDF format scan.
 base::FilePath CreateSavedPdfScanPath(const base::FilePath& dir,
                                       const base::Time::Exploded& scan_time) {
@@ -136,6 +130,31 @@
                                        scan_time.minute, scan_time.second));
 }
 
+// Returns a vector of FilePaths to mimic saved scans.
+std::vector<base::FilePath> CreateSavedScanPaths(
+    const base::FilePath& dir,
+    const base::Time::Exploded& scan_time,
+    const mojo_ipc::FileType& file_type,
+    int num_pages_to_scan) {
+  const auto typeAndExtension = kFileTypes.find(file_type);
+  EXPECT_NE(typeAndExtension, kFileTypes.cend());
+  std::vector<base::FilePath> file_paths;
+  if (file_type == mojo_ipc::FileType::kPdf) {
+    file_paths.reserve(1);
+    file_paths.push_back(CreateSavedPdfScanPath(dir, scan_time));
+  } else {
+    file_paths.reserve(num_pages_to_scan);
+    for (int i = 1; i <= num_pages_to_scan; i++) {
+      file_paths.push_back(dir.Append(base::StringPrintf(
+          "scan_%02d%02d%02d-%02d%02d%02d_%d.%s", scan_time.year,
+          scan_time.month, scan_time.day_of_month, scan_time.hour,
+          scan_time.minute, scan_time.second, i,
+          typeAndExtension->second.c_str())));
+    }
+  }
+  return file_paths;
+}
+
 // Returns a manually generated PNG image.
 std::string CreatePng() {
   SkBitmap bitmap;
@@ -431,17 +450,23 @@
   base::Time::Now().LocalExplode(&scan_time);
 
   scan_service_->SetMyFilesPathForTesting(scanned_files_mount_->GetRootPath());
-  std::map<std::string, mojo_ipc::FileType> file_types = {
-      {"png", mojo_ipc::FileType::kPng}, {"jpg", mojo_ipc::FileType::kJpg}};
-  for (const auto& type : file_types) {
-    const std::vector<base::FilePath> saved_scan_paths =
-        CreateSavedScanPaths(scanned_files_mount_->GetRootPath(), scan_time,
-                             type.first, scan_data.size());
+  for (int type_num = static_cast<int>(mojo_ipc::FileType::kMinValue);
+       type_num <= static_cast<int>(mojo_ipc::FileType::kMaxValue);
+       ++type_num) {
+    auto type = static_cast<mojo_ipc::FileType>(type_num);
+    if (type == mojo_ipc::FileType::kSearchablePdf &&
+        !base::FeatureList::IsEnabled(
+            chromeos::features::kScanAppSearchablePdf)) {
+      continue;
+    }
+
+    const std::vector<base::FilePath> saved_scan_paths = CreateSavedScanPaths(
+        scanned_files_mount_->GetRootPath(), scan_time, type, scan_data.size());
     for (const auto& saved_scan_path : saved_scan_paths)
       EXPECT_FALSE(base::PathExists(saved_scan_path));
 
     mojo_ipc::ScanSettings settings =
-        CreateScanSettings(scanned_files_mount_->GetRootPath(), type.second);
+        CreateScanSettings(scanned_files_mount_->GetRootPath(), type);
     EXPECT_TRUE(StartScan(scanners[0]->id, settings.Clone()));
     for (const auto& saved_scan_path : saved_scan_paths)
       EXPECT_TRUE(base::PathExists(saved_scan_path));
@@ -453,37 +478,6 @@
   }
 }
 
-// Test that a scan with PDF file format can be perfomed successfully.
-TEST_F(ScanServiceTest, PdfScan) {
-  fake_lorgnette_scanner_manager_.SetGetScannerNamesResponse(
-      {kFirstTestScannerName});
-  const std::vector<std::string> scan_data = {CreatePng(), CreatePng(),
-                                              CreatePng()};
-  fake_lorgnette_scanner_manager_.SetScanResponse(scan_data);
-  auto scanners = GetScanners();
-  ASSERT_EQ(scanners.size(), 1u);
-
-  base::Time::Exploded scan_time;
-  // Since we're using mock time, this is deterministic.
-  base::Time::Now().LocalExplode(&scan_time);
-
-  scan_service_->SetMyFilesPathForTesting(scanned_files_mount_->GetRootPath());
-  mojo_ipc::ScanSettings settings = CreateScanSettings(
-      scanned_files_mount_->GetRootPath(), mojo_ipc::FileType::kPdf);
-  const base::FilePath saved_scan_path =
-      CreateSavedPdfScanPath(scanned_files_mount_->GetRootPath(), scan_time);
-  EXPECT_FALSE(base::PathExists(saved_scan_path));
-  EXPECT_TRUE(StartScan(scanners[0]->id, settings.Clone()));
-  EXPECT_TRUE(base::PathExists(saved_scan_path));
-  EXPECT_TRUE(fake_scan_job_observer_.scan_success());
-  EXPECT_EQ(mojo_ipc::ScanResult::kSuccess,
-            fake_scan_job_observer_.scan_result());
-  const std::vector<base::FilePath> scanned_file_paths =
-      fake_scan_job_observer_.scanned_file_paths();
-  EXPECT_EQ(1u, scanned_file_paths.size());
-  EXPECT_EQ(saved_scan_path, scanned_file_paths.front());
-}
-
 // Test that an Epson ADF Duplex scan, which produces flipped pages, completes
 // successfully.
 TEST_F(ScanServiceTest, RotateEpsonADF) {
@@ -584,8 +578,9 @@
   // Since we're using mock time, this is deterministic.
   base::Time::Now().LocalExplode(&scan_time);
 
-  const std::vector<base::FilePath> saved_scan_paths = CreateSavedScanPaths(
-      scanned_files_mount_->GetRootPath(), scan_time, "png", scan_data.size());
+  const std::vector<base::FilePath> saved_scan_paths =
+      CreateSavedScanPaths(scanned_files_mount_->GetRootPath(), scan_time,
+                           mojo_ipc::FileType::kPng, scan_data.size());
   for (const auto& saved_scan_path : saved_scan_paths)
     EXPECT_FALSE(base::PathExists(saved_scan_path));
 
@@ -617,8 +612,9 @@
   scan_service_->SetMyFilesPathForTesting(scanned_files_mount_->GetRootPath());
   const mojo_ipc::ScanSettings settings = CreateScanSettings(
       scanned_files_mount_->GetRootPath(), mojo_ipc::FileType::kPng);
-  const std::vector<base::FilePath> saved_scan_paths = CreateSavedScanPaths(
-      scanned_files_mount_->GetRootPath(), scan_time, "png", scan_data.size());
+  const std::vector<base::FilePath> saved_scan_paths =
+      CreateSavedScanPaths(scanned_files_mount_->GetRootPath(), scan_time,
+                           mojo_ipc::FileType::kPng, scan_data.size());
   for (const auto& saved_scan_path : saved_scan_paths)
     EXPECT_FALSE(base::PathExists(saved_scan_path));
 
@@ -684,18 +680,24 @@
   ASSERT_EQ(num_items_in_holding_space, holding_space_model->items().size());
 
   scan_service_->SetMyFilesPathForTesting(scanned_files_mount_->GetRootPath());
-  std::map<std::string, mojo_ipc::FileType> file_types = {
-      {"png", mojo_ipc::FileType::kPng}, {"jpg", mojo_ipc::FileType::kJpg}};
-  for (const auto& type : file_types) {
+  for (int type_num = static_cast<int>(mojo_ipc::FileType::kMinValue);
+       type_num <= static_cast<int>(mojo_ipc::FileType::kMaxValue);
+       ++type_num) {
+    auto type = static_cast<mojo_ipc::FileType>(type_num);
+    if (type == mojo_ipc::FileType::kSearchablePdf &&
+        !base::FeatureList::IsEnabled(
+            chromeos::features::kScanAppSearchablePdf)) {
+      continue;
+    }
+
     fake_lorgnette_scanner_manager_.SetScanResponse(scan_data);
-    const std::vector<base::FilePath> saved_scan_paths =
-        CreateSavedScanPaths(scanned_files_mount_->GetRootPath(), scan_time,
-                             type.first, scan_data.size());
+    const std::vector<base::FilePath> saved_scan_paths = CreateSavedScanPaths(
+        scanned_files_mount_->GetRootPath(), scan_time, type, scan_data.size());
     for (const auto& saved_scan_path : saved_scan_paths)
       EXPECT_FALSE(base::PathExists(saved_scan_path));
 
     mojo_ipc::ScanSettings settings =
-        CreateScanSettings(scanned_files_mount_->GetRootPath(), type.second);
+        CreateScanSettings(scanned_files_mount_->GetRootPath(), type);
     EXPECT_TRUE(StartScan(scanners[0]->id, settings.Clone()));
     EXPECT_TRUE(fake_scan_job_observer_.scan_success());
     EXPECT_EQ(mojo_ipc::ScanResult::kSuccess,
@@ -728,51 +730,4 @@
   }
 }
 
-// Test that a PDF scan creates a holding space item.
-TEST_F(ScanServiceTest, HoldingSpacePdfScan) {
-  fake_lorgnette_scanner_manager_.SetGetScannerNamesResponse(
-      {kFirstTestScannerName});
-  const std::vector<std::string> scan_data = {CreatePng(), CreatePng(),
-                                              CreatePng()};
-  fake_lorgnette_scanner_manager_.SetScanResponse(scan_data);
-  auto scanners = GetScanners();
-  ASSERT_EQ(scanners.size(), 1u);
-
-  base::Time::Exploded scan_time;
-  // Since we're using mock time, this is deterministic.
-  base::Time::Now().LocalExplode(&scan_time);
-
-  // Verify that the holding space starts out empty.
-  HoldingSpaceKeyedService* holding_space_keyed_service =
-      HoldingSpaceKeyedServiceFactory::GetInstance()->GetService(profile_);
-  ASSERT_TRUE(holding_space_keyed_service);
-  const HoldingSpaceModel* holding_space_model =
-      holding_space_keyed_service->model_for_testing();
-  ASSERT_TRUE(holding_space_model);
-  size_t num_items_in_holding_space = 0u;
-  ASSERT_EQ(num_items_in_holding_space, holding_space_model->items().size());
-
-  scan_service_->SetMyFilesPathForTesting(scanned_files_mount_->GetRootPath());
-  mojo_ipc::ScanSettings settings = CreateScanSettings(
-      scanned_files_mount_->GetRootPath(), mojo_ipc::FileType::kPdf);
-  const base::FilePath saved_scan_path =
-      CreateSavedPdfScanPath(scanned_files_mount_->GetRootPath(), scan_time);
-  EXPECT_FALSE(base::PathExists(saved_scan_path));
-  EXPECT_TRUE(StartScan(scanners[0]->id, settings.Clone()));
-  EXPECT_TRUE(base::PathExists(saved_scan_path));
-  EXPECT_TRUE(fake_scan_job_observer_.scan_success());
-  EXPECT_EQ(mojo_ipc::ScanResult::kSuccess,
-            fake_scan_job_observer_.scan_result());
-  const std::vector<base::FilePath> scanned_file_paths =
-      fake_scan_job_observer_.scanned_file_paths();
-  EXPECT_EQ(1u, scanned_file_paths.size());
-  EXPECT_EQ(saved_scan_path, scanned_file_paths.front());
-
-  // Verify that the scanned PDF is added to the holding space.
-  EXPECT_EQ(1u, holding_space_model->items().size());
-  HoldingSpaceItem* scanned_item = holding_space_model->items().back().get();
-  EXPECT_EQ(scanned_item->type(), HoldingSpaceItem::Type::kScan);
-  EXPECT_EQ(scanned_item->file_path(), saved_scan_path);
-}
-
 }  // namespace ash
diff --git a/chrome/browser/browsing_data/counters/browsing_data_counter_utils.cc b/chrome/browser/browsing_data/counters/browsing_data_counter_utils.cc
index 61838bb..0d475d8 100644
--- a/chrome/browser/browsing_data/counters/browsing_data_counter_utils.cc
+++ b/chrome/browser/browsing_data/counters/browsing_data_counter_utils.cc
@@ -59,7 +59,7 @@
   }
 #if BUILDFLAG(ENABLE_DICE_SUPPORT)
   if (AccountConsistencyModeManager::IsDiceEnabledForProfile(profile)) {
-    return sync_ui_util::GetStatus(profile) == sync_ui_util::SYNCED;
+    return GetSyncStatusMessageType(profile) == SyncStatusMessageType::kSynced;
   }
 #endif
   return false;
diff --git a/chrome/browser/chrome_browser_main_win_unittest.cc b/chrome/browser/chrome_browser_main_win_unittest.cc
index b39fa8c..e2fa1f46 100644
--- a/chrome/browser/chrome_browser_main_win_unittest.cc
+++ b/chrome/browser/chrome_browser_main_win_unittest.cc
@@ -66,7 +66,7 @@
       flags_ui::prefs::kAboutFlagsOriginLists);
   const char kExperimentName[] = "exp-flag";
   about_flags::testing::ScopedFeatureEntries scoped_feature_entries(
-      {{kExperimentName, "Exp", "description", -1,
+      {{kExperimentName, "Exp", "description", static_cast<unsigned short>(-1),
         ORIGIN_LIST_VALUE_TYPE("flag-switch", "")}});
   about_flags::SetFeatureEntryEnabled(&flags_storage, kExperimentName,
                                       /*enable=*/true);
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 8e58518..f346118d 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -65,6 +65,7 @@
 #include "chrome/browser/enterprise/util/managed_browser_utils.h"
 #include "chrome/browser/extensions/chrome_extension_cookies.h"
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
+#include "chrome/browser/favicon/favicon_utils.h"
 #include "chrome/browser/federated_learning/floc_eligibility_observer.h"
 #include "chrome/browser/federated_learning/floc_id_provider.h"
 #include "chrome/browser/federated_learning/floc_id_provider_factory.h"
@@ -2521,8 +2522,7 @@
 }
 
 gfx::ImageSkia ChromeContentBrowserClient::GetDefaultFavicon() {
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-  return rb.GetNativeImageNamed(IDR_DEFAULT_FAVICON).AsImageSkia();
+  return favicon::GetDefaultFavicon().AsImageSkia();
 }
 
 bool ChromeContentBrowserClient::IsDataSaverEnabled(
diff --git a/chrome/browser/chromeos/BUILD.gn b/chrome/browser/chromeos/BUILD.gn
index 2b9bae9..30e4ac8 100644
--- a/chrome/browser/chromeos/BUILD.gn
+++ b/chrome/browser/chromeos/BUILD.gn
@@ -1467,6 +1467,8 @@
     "../ash/login/saml/in_session_password_sync_manager.h",
     "../ash/login/saml/in_session_password_sync_manager_factory.cc",
     "../ash/login/saml/in_session_password_sync_manager_factory.h",
+    "../ash/login/saml/password_change_success_notification.cc",
+    "../ash/login/saml/password_change_success_notification.h",
     "../ash/login/saml/password_expiry_notification.cc",
     "../ash/login/saml/password_expiry_notification.h",
     "../ash/login/saml/password_sync_token_checkers_collection.cc",
@@ -3825,6 +3827,7 @@
     "../ash/login/saml/in_session_password_sync_manager_unittest.cc",
     "../ash/login/saml/mock_lock_handler.cc",
     "../ash/login/saml/mock_lock_handler.h",
+    "../ash/login/saml/password_change_success_notification_unittest.cc",
     "../ash/login/saml/password_expiry_notification_unittest.cc",
     "../ash/login/saml/password_sync_token_login_checker_unittest.cc",
     "../ash/login/saml/password_sync_token_verifier_unittest.cc",
diff --git a/chrome/browser/chromeos/platform_keys/extension_platform_keys_service_factory.cc b/chrome/browser/chromeos/platform_keys/extension_platform_keys_service_factory.cc
index 125e5b4..97e4b789 100644
--- a/chrome/browser/chromeos/platform_keys/extension_platform_keys_service_factory.cc
+++ b/chrome/browser/chromeos/platform_keys/extension_platform_keys_service_factory.cc
@@ -15,8 +15,6 @@
 #include "base/memory/singleton.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/platform_keys/extension_platform_keys_service.h"
-#include "chrome/browser/chromeos/platform_keys/key_permissions/key_permissions_service_factory.h"
-#include "chrome/browser/chromeos/platform_keys/platform_keys_service_factory.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/ui/platform_keys_certificate_selector_chromeos.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
@@ -24,6 +22,10 @@
 #include "extensions/common/extension.h"
 #include "net/cert/x509_certificate.h"
 
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+#include "chrome/browser/ash/crosapi/keystore_service_factory_ash.h"
+#endif
+
 namespace chromeos {
 namespace {
 
@@ -88,9 +90,9 @@
     : BrowserContextKeyedServiceFactory(
           "ExtensionPlatformKeysService",
           BrowserContextDependencyManager::GetInstance()) {
-  DependsOn(chromeos::platform_keys::PlatformKeysServiceFactory::GetInstance());
-  DependsOn(
-      chromeos::platform_keys::KeyPermissionsServiceFactory::GetInstance());
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+  DependsOn(crosapi::KeystoreServiceFactoryAsh::GetInstance());
+#endif
 }
 
 ExtensionPlatformKeysServiceFactory::~ExtensionPlatformKeysServiceFactory() {}
diff --git a/chrome/browser/chromeos/policy/core/device_cloud_policy_manager_chromeos.cc b/chrome/browser/chromeos/policy/core/device_cloud_policy_manager_chromeos.cc
index 50900dae..170da16 100644
--- a/chrome/browser/chromeos/policy/core/device_cloud_policy_manager_chromeos.cc
+++ b/chrome/browser/chromeos/policy/core/device_cloud_policy_manager_chromeos.cc
@@ -270,6 +270,8 @@
 }
 
 void DeviceCloudPolicyManagerChromeOS::OnStateKeysUpdated() {
+  // TODO(b/181140445): If we had a separate state keys upload request to DM
+  // Server we should call it here.
   if (client() && IsForcedReEnrollmentEnabled())
     client()->SetStateKeysToUpload(state_keys_broker_->state_keys());
 }
diff --git a/chrome/browser/chromeos/policy/enrollment/device_cloud_policy_initializer.cc b/chrome/browser/chromeos/policy/enrollment/device_cloud_policy_initializer.cc
index dcd7452..6b48602 100644
--- a/chrome/browser/chromeos/policy/enrollment/device_cloud_policy_initializer.cc
+++ b/chrome/browser/chromeos/policy/enrollment/device_cloud_policy_initializer.cc
@@ -346,6 +346,8 @@
 
 void DeviceCloudPolicyInitializer::TryToCreateClient(
     DeviceCloudPolicyInitializer::StartConnectionReason reason) {
+  // TODO(b/181140445): If we had a separate state keys upload request to DM
+  // Server we could drop the `state_keys_broker_->available()` requirement.
   if (!policy_store_->is_initialized() || !policy_store_->has_policy() ||
       !state_keys_broker_->available() || enrollment_handler_ ||
       install_attributes_->IsActiveDirectoryManaged()) {
diff --git a/chrome/browser/content_creation/notes/internal/android/BUILD.gn b/chrome/browser/content_creation/notes/internal/android/BUILD.gn
index 29f1475..f29ef9b 100644
--- a/chrome/browser/content_creation/notes/internal/android/BUILD.gn
+++ b/chrome/browser/content_creation/notes/internal/android/BUILD.gn
@@ -38,6 +38,7 @@
     "//components/browser_ui/share/android:java",
     "//components/browser_ui/styles/android:java_resources",
     "//components/content_creation/notes/android:java",
+    "//components/url_formatter/android:url_formatter_java",
     "//content/public/android:content_java_resources",
     "//third_party/android_deps:android_support_v7_appcompat_java",
     "//ui/android:ui_java",
@@ -63,6 +64,7 @@
     "java/res/layout/creation_dialog.xml",
     "java/res/layout/top_bar.xml",
     "java/res/values/dimens.xml",
+    "java/res/values/styles.xml",
   ]
 }
 
diff --git a/chrome/browser/content_creation/notes/internal/android/java/res/layout/carousel_item.xml b/chrome/browser/content_creation/notes/internal/android/java/res/layout/carousel_item.xml
index b2dcf73b..d9b23a2 100644
--- a/chrome/browser/content_creation/notes/internal/android/java/res/layout/carousel_item.xml
+++ b/chrome/browser/content_creation/notes/internal/android/java/res/layout/carousel_item.xml
@@ -6,36 +6,70 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="wrap_content"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:layout_gravity="center_horizontal"
+    android:background="@color/modern_grey_200"
+    android:id="@+id/item">
 
-    <LinearLayout
-        android:id="@+id/item"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal"
-        android:background="@color/modern_grey_200"
-        android:orientation="vertical">
-
+        <!-- Note template -->
         <LinearLayout
             android:id="@+id/background"
             android:layout_width="@dimen/note_width"
-            android:layout_height="240dp"
+            android:layout_height="280dp"
             android:gravity="center_horizontal"
             android:background="@drawable/note_background_outline"
-            android:orientation="vertical"
-            tools:ignore="UselessParent">
+            android:orientation="vertical">
 
+            <!-- Selected text -->
             <TextView
                 android:id="@+id/text"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
+                android:layout_width="240dp"
+                android:layout_height="200dp"
                 android:maxLines="6"
-                android:paddingLeft="20dp"
-                android:paddingTop="20dp"
-                android:paddingRight="20dp"
-                android:paddingBottom="20dp"
+                android:layout_marginStart="20dp"
+                android:layout_marginTop="20dp"
+                android:layout_marginEnd="20dp"
+                android:layout_marginBottom="20dp"
                 android:textAppearance="@style/TextAppearance.Headline" />
-        </LinearLayout>
-    </LinearLayout>
 
+            <!-- Footer -->
+            <RelativeLayout
+                android:id="@+id/footer"
+                android:layout_width="match_parent"
+                android:layout_height="40dp"
+                android:paddingBottom="8dp"
+                android:paddingEnd="8dp"
+                android:paddingStart="20dp">
+
+                <TextView
+                    android:id="@+id/footer_link"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:maxLines="1"
+                    android:ellipsize="end"
+                    android:layout_marginEnd="20dp"
+                    android:textAppearance="@style/TextAppearance.TextSmallThick.Secondary.Light"
+                    android:layout_alignParentStart="true"/>
+
+                <TextView
+                    android:id="@+id/footer_title"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:maxLines="1"
+                    android:ellipsize="end"
+                    android:layout_marginEnd="20dp"
+                    android:textAppearance="@style/TextAppearance.TextSmallItalic.Secondary.Light"
+                    android:layout_alignTop="@id/footer_icon"
+                    android:layout_alignParentStart="false"/>
+
+                <ImageView
+                    android:id="@+id/footer_icon"
+                    android:layout_width="16dp"
+                    android:layout_height="16dp"
+                    android:layout_alignParentEnd="true"
+                    android:layout_alignParentBottom="true"
+                    android:src="@drawable/ic_chrome"
+                    android:importantForAccessibility="no"/>
+            </RelativeLayout>
+        </LinearLayout>
 </ScrollView>
\ No newline at end of file
diff --git a/chrome/browser/content_creation/notes/internal/android/java/res/values/styles.xml b/chrome/browser/content_creation/notes/internal/android/java/res/values/styles.xml
new file mode 100644
index 0000000..22d9a66
--- /dev/null
+++ b/chrome/browser/content_creation/notes/internal/android/java/res/values/styles.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- Copyright 2013 The Chromium Authors. All rights reserved.
+
+     Use of this source code is governed by a BSD-style license that can be
+     found in the LICENSE file.
+-->
+
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <style name="TextAppearance.TextSmallItalic.Secondary.Light" parent="TextAppearance.TextSmall.Secondary">
+        <item name="android:textColor">@color/default_text_color_secondary_light_list</item>
+        <item name="android:textStyle">italic</item>
+    </style>
+</resources>
diff --git a/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorFactory.java b/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorFactory.java
index 31b15d14..a4059573 100644
--- a/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorFactory.java
+++ b/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorFactory.java
@@ -18,10 +18,11 @@
      * @return a NoteCreationCoordinator instance.
      */
     public static NoteCreationCoordinator create(Activity activity, Tab tab, String shareUrl,
-            String selectedText, ChromeOptionShareCallback chromeOptionShareCallback) {
+            String title, String selectedText,
+            ChromeOptionShareCallback chromeOptionShareCallback) {
         Profile profile = Profile.getLastUsedRegularProfile();
         return new NoteCreationCoordinatorImpl(activity, tab,
                 NoteServiceFactory.getForProfile(profile), chromeOptionShareCallback, shareUrl,
-                selectedText);
+                title, selectedText);
     }
 }
diff --git a/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorImpl.java b/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorImpl.java
index a9de725..67903d32 100644
--- a/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorImpl.java
+++ b/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationCoordinatorImpl.java
@@ -22,6 +22,7 @@
 import org.chromium.components.browser_ui.share.ShareImageFileUtils;
 import org.chromium.components.browser_ui.share.ShareParams;
 import org.chromium.components.content_creation.notes.NoteService;
+import org.chromium.components.url_formatter.UrlFormatter;
 import org.chromium.ui.modelutil.MVCListAdapter.ModelList;
 
 import java.text.DateFormat;
@@ -47,7 +48,7 @@
     private TopBarCoordinator mTopBarCoordinator;
 
     public NoteCreationCoordinatorImpl(Activity activity, Tab tab, NoteService noteService,
-            ChromeOptionShareCallback chromeOptionShareCallback, String shareUrl,
+            ChromeOptionShareCallback chromeOptionShareCallback, String shareUrl, String title,
             String selectedText) {
         mActivity = activity;
         mTab = tab;
@@ -59,8 +60,10 @@
         mMediator =
                 new NoteCreationMediator(mListModel, new GoogleFontService(mActivity), noteService);
 
+        String urlDomain =
+                UrlFormatter.formatUrlForDisplayOmitSchemeOmitTrivialSubdomains(mShareUrl);
         mDialog = new NoteCreationDialog();
-        mDialog.initDialog(this::onViewCreated, selectedText);
+        mDialog.initDialog(this::onViewCreated, urlDomain, title, selectedText);
     }
 
     @Override
diff --git a/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationDialog.java b/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationDialog.java
index 5e255015..911c786 100644
--- a/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationDialog.java
+++ b/chrome/browser/content_creation/notes/internal/android/java/src/org/chromium/chrome/browser/content_creation/notes/NoteCreationDialog.java
@@ -9,6 +9,7 @@
 import android.os.Bundle;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import androidx.appcompat.app.AlertDialog;
@@ -33,6 +34,8 @@
     private static final float NOTE_PADDING_RATIO = 0.25f;
 
     private View mContentView;
+    private String mUrlDomain;
+    private String mTitle;
     private String mSelectedText;
     private int mSelectedItemIndex;
 
@@ -41,8 +44,11 @@
     }
     private NoteDialogObserver mNoteDialogObserver;
 
-    public void initDialog(NoteDialogObserver noteDialogObserver, String selectedText) {
+    public void initDialog(NoteDialogObserver noteDialogObserver, String urlDomain, String title,
+            String selectedText) {
         mNoteDialogObserver = noteDialogObserver;
+        mUrlDomain = urlDomain;
+        mTitle = title;
         mSelectedText = selectedText;
     }
 
@@ -119,6 +125,13 @@
         noteText.setTypeface(typeface);
 
         template.textStyle.apply(noteText, mSelectedText);
+        TextView footerLink = (TextView) parent.findViewById(R.id.footer_link);
+        TextView footerTitle = (TextView) parent.findViewById(R.id.footer_title);
+        ImageView footerIcon = (ImageView) parent.findViewById(R.id.footer_icon);
+        footerLink.setText(mUrlDomain);
+        footerTitle.setText(mTitle);
+
+        template.footerStyle.apply(footerLink, footerTitle, footerIcon);
 
         setLeftPadding(model.get(NoteProperties.IS_FIRST), parent.findViewById(R.id.item));
     }
diff --git a/chrome/browser/extensions/activity_log/activity_log_unittest.cc b/chrome/browser/extensions/activity_log/activity_log_unittest.cc
index 354df26a..5f83645 100644
--- a/chrome/browser/extensions/activity_log/activity_log_unittest.cc
+++ b/chrome/browser/extensions/activity_log/activity_log_unittest.cc
@@ -19,7 +19,6 @@
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/browser/prefetch/no_state_prefetch/no_state_prefetch_manager_factory.h"
-#include "chrome/browser/prefetch/no_state_prefetch/prerender_test_utils.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
diff --git a/chrome/browser/extensions/api/browsing_data/browsing_data_api.cc b/chrome/browser/extensions/api/browsing_data/browsing_data_api.cc
index aef34456..cf29a5d 100644
--- a/chrome/browser/extensions/api/browsing_data/browsing_data_api.cc
+++ b/chrome/browser/extensions/api/browsing_data/browsing_data_api.cc
@@ -141,7 +141,7 @@
 
 // Returns true if Sync is currently running (i.e. enabled and not in error).
 bool IsSyncRunning(Profile* profile) {
-  return sync_ui_util::GetStatus(profile) == sync_ui_util::SYNCED;
+  return GetSyncStatusMessageType(profile) == SyncStatusMessageType::kSynced;
 }
 }  // namespace
 
diff --git a/chrome/browser/extensions/api/browsing_data/browsing_data_test.cc b/chrome/browser/extensions/api/browsing_data/browsing_data_test.cc
index 7924f4f3..2535247 100644
--- a/chrome/browser/extensions/api/browsing_data/browsing_data_test.cc
+++ b/chrome/browser/extensions/api/browsing_data/browsing_data_test.cc
@@ -108,7 +108,7 @@
   sync_service->GetUserSettings()->SetFirstSetupComplete(
       syncer::SyncFirstSetupCompleteSource::BASIC_FLOW);
 
-  ASSERT_EQ(sync_ui_util::SYNCED, sync_ui_util::GetStatus(profile));
+  ASSERT_EQ(SyncStatusMessageType::kSynced, GetSyncStatusMessageType(profile));
   // Clear browsing data.
   auto function = base::MakeRefCounted<BrowsingDataRemoveFunction>();
   EXPECT_EQ(NULL, RunFunctionAndReturnSingleResult(
@@ -143,7 +143,7 @@
               CREDENTIALS_REJECTED_BY_SERVER));
 
   // Sync is not running.
-  ASSERT_NE(sync_ui_util::SYNCED, sync_ui_util::GetStatus(profile));
+  ASSERT_NE(SyncStatusMessageType::kSynced, GetSyncStatusMessageType(profile));
   // Clear browsing data.
   auto function = base::MakeRefCounted<BrowsingDataRemoveFunction>();
   EXPECT_EQ(NULL, RunFunctionAndReturnSingleResult(
diff --git a/chrome/browser/extensions/api/image_writer_private/xz_extractor.cc b/chrome/browser/extensions/api/image_writer_private/xz_extractor.cc
index 4219c13..0f4000d 100644
--- a/chrome/browser/extensions/api/image_writer_private/xz_extractor.cc
+++ b/chrome/browser/extensions/api/image_writer_private/xz_extractor.cc
@@ -30,7 +30,7 @@
     FILE_PATH_LITERAL("extracted.bin");
 
 // https://tukaani.org/xz/xz-file-format-1.0.4.txt
-constexpr char kExpectedMagic[6] = {0xfd, '7', 'z', 'X', 'Z', 0x00};
+constexpr uint8_t kExpectedMagic[6] = {0xfd, '7', 'z', 'X', 'Z', 0x00};
 
 }  // namespace
 
@@ -46,8 +46,10 @@
   if (infile.ReadAtCurrentPos(actual_magic, kExpectedSize) != kExpectedSize)
     return false;
 
-  return std::equal(kExpectedMagic, kExpectedMagic + kExpectedSize,
-                    actual_magic);
+  return std::equal(
+      reinterpret_cast<const char*>(kExpectedMagic),
+      reinterpret_cast<const char*>(kExpectedMagic + kExpectedSize),
+      actual_magic);
 }
 
 // static
diff --git a/chrome/browser/extensions/api/web_request/web_request_apitest.cc b/chrome/browser/extensions/api/web_request/web_request_apitest.cc
index 75e582e0..426c544 100644
--- a/chrome/browser/extensions/api/web_request/web_request_apitest.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_apitest.cc
@@ -6,6 +6,7 @@
 #include <utility>
 #include <vector>
 
+#include "base/base64.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/contains.h"
@@ -233,6 +234,11 @@
 const char kHeaderValueFromExtension[] = "ValueFromExtension";
 const char kHeaderValueFromServer[] = "ValueFromServer";
 
+constexpr char kCORSUrl[] = "http://cors.test/cors";
+constexpr char kCORSProxyUser[] = "testuser";
+constexpr char kCORSProxyPass[] = "testpass";
+constexpr char kCustomPreflightHeader[] = "x-testheader";
+
 // Performs an XHR in the given |frame|, replying when complete.
 void PerformXhrInFrame(content::RenderFrameHost* frame,
                       const std::string& host,
@@ -4396,4 +4402,187 @@
       blink::IdentifiableSurface::Type::kExtensionCancelRequest));
 }
 
+class ProxyCORSWebRequestApiTest : public ExtensionApiTest {
+ public:
+  ProxyCORSWebRequestApiTest() = default;
+  ~ProxyCORSWebRequestApiTest() override = default;
+
+ protected:
+  class ProceedLoginDialog : public content::NotificationObserver {
+   public:
+    ProceedLoginDialog(const std::string& user, const std::string& password)
+        : user_(base::ASCIIToUTF16(user)),
+          password_(base::ASCIIToUTF16(password)) {
+      registrar_.Add(this, chrome::NOTIFICATION_AUTH_NEEDED,
+                     content::NotificationService::AllSources());
+    }
+
+    ~ProceedLoginDialog() override = default;
+
+   private:
+    ProceedLoginDialog(const ProceedLoginDialog&) = delete;
+    ProceedLoginDialog& operator=(const ProceedLoginDialog&) = delete;
+
+    void Observe(int type,
+                 const content::NotificationSource& source,
+                 const content::NotificationDetails& details) override {
+      LoginHandler* handler =
+          content::Details<LoginNotificationDetails>(details).ptr()->handler();
+      handler->SetAuth(user_, password_);
+    }
+
+    content::NotificationRegistrar registrar_;
+    std::u16string user_;
+    std::u16string password_;
+  };
+
+  void SetUpOnMainThread() override {
+    ExtensionApiTest::SetUpOnMainThread();
+    ASSERT_TRUE(StartEmbeddedTestServer());
+    proxy_cors_server_.RegisterRequestHandler(base::BindRepeating(
+        &ProxyCORSWebRequestApiTest::HandleProxiedCORSRequest));
+    ASSERT_TRUE(proxy_cors_server_.Start());
+
+    PrefService* pref_service = browser()->profile()->GetPrefs();
+    pref_service->Set(proxy_config::prefs::kProxy,
+                      ProxyConfigDictionary::CreateFixedServers(
+                          proxy_cors_server_.host_port_pair().ToString(),
+                          "accounts.google.com"));
+
+    // Flush the proxy configuration change to avoid any races.
+    ProfileNetworkContextServiceFactory::GetForContext(browser()->profile())
+        ->FlushProxyConfigMonitorForTesting();
+    profile()->GetDefaultStoragePartition()->FlushNetworkInterfaceForTesting();
+  }
+
+  static std::unique_ptr<net::test_server::HttpResponse>
+  HandleProxiedCORSRequest(const net::test_server::HttpRequest& request) {
+    std::string request_url;
+    // Request url with be replaced by host:port pair of embedded proxy server
+    // in HttpRequest, extract requested url from request line instead.
+    std::vector<std::string> request_lines =
+        base::SplitString(request.all_headers, "\r\n", base::TRIM_WHITESPACE,
+                          base::SPLIT_WANT_NONEMPTY);
+    if (!request_lines.empty()) {
+      std::vector<std::string> request_line =
+          base::SplitString(request_lines[0], " ", base::TRIM_WHITESPACE,
+                            base::SPLIT_WANT_NONEMPTY);
+      if (request_line.size() > 1) {
+        request_url = request_line[1];
+      }
+    }
+    if (request_url != kCORSUrl) {
+      return nullptr;
+    }
+
+    // Handle request as proxy server.
+    const auto proxy_auth = request.headers.find("Proxy-Authorization");
+    std::string auth;
+    if (proxy_auth != request.headers.end()) {
+      auth = proxy_auth->second;
+      const std::string auth_method_prefix = "Basic ";
+      const auto prefix_pos = auth.find(auth_method_prefix);
+      EXPECT_EQ(0U, prefix_pos);
+      EXPECT_GT(auth.size(), auth_method_prefix.size());
+      if (prefix_pos == 0U && auth.size() > auth_method_prefix.size()) {
+        auth = auth.substr(auth_method_prefix.size());
+        EXPECT_TRUE(base::Base64Decode(auth, &auth));
+      } else {
+        auth.clear();
+      }
+    }
+    if (auth != base::StringPrintf("%s:%s", kCORSProxyUser, kCORSProxyPass)) {
+      std::unique_ptr<net::test_server::BasicHttpResponse> response =
+          std::make_unique<net::test_server::BasicHttpResponse>();
+      response->AddCustomHeader("Proxy-Authenticate",
+                                "Basic realm=\"TestRealm\"");
+      response->set_code(net::HTTP_PROXY_AUTHENTICATION_REQUIRED);
+      return response;
+    }
+
+    // Handle request as cors server.
+    if (request.method == net::test_server::METHOD_OPTIONS) {
+      const auto preflight_method =
+          request.headers.find("Access-Control-Request-Method");
+      const auto preflight_header =
+          request.headers.find("Access-Control-Request-Headers");
+      if (preflight_method == request.headers.end() ||
+          preflight_header == request.headers.end()) {
+        ADD_FAILURE() << "Expected Access-Control-Request-* headers were not "
+                         "found in preflight request";
+        std::unique_ptr<net::test_server::BasicHttpResponse> response =
+            std::make_unique<net::test_server::BasicHttpResponse>();
+        response->set_code(net::HTTP_BAD_REQUEST);
+        return response;
+      }
+      EXPECT_EQ("GET", preflight_method->second);
+      EXPECT_EQ(kCustomPreflightHeader, preflight_header->second);
+
+      std::unique_ptr<net::test_server::BasicHttpResponse> response =
+          std::make_unique<net::test_server::BasicHttpResponse>();
+      response->AddCustomHeader("Access-Control-Allow-Origin", "*");
+      response->AddCustomHeader("Access-Control-Allow-Methods", "GET");
+      response->AddCustomHeader("Access-Control-Allow-Headers",
+                                kCustomPreflightHeader);
+      response->set_code(net::HTTP_NO_CONTENT);
+      return response;
+    }
+    EXPECT_EQ(net::test_server::METHOD_GET, request.method);
+
+    std::unique_ptr<net::test_server::BasicHttpResponse> response =
+        std::make_unique<net::test_server::BasicHttpResponse>();
+    response->AddCustomHeader("Access-Control-Allow-Origin", "*");
+    response->set_content_type("text/plain");
+    response->set_content("PASS");
+    response->set_code(net::HTTP_OK);
+    return response;
+  }
+
+  net::EmbeddedTestServer proxy_cors_server_;
+};
+
+// Regression test for crbug.com/1212625
+// Test that CORS preflight request which requires proxy auth completes
+// successfully instead of being cancelled after proxy auth required response.
+IN_PROC_BROWSER_TEST_F(ProxyCORSWebRequestApiTest,
+                       PreflightCompletesSuccessfully) {
+  ProceedLoginDialog login_dialog(kCORSProxyUser, kCORSProxyPass);
+  ExtensionTestMessageListener ready_listener("ready", false);
+  const Extension* extension =
+      LoadExtension(test_data_dir_.AppendASCII("webrequest_cors_preflight"));
+  ASSERT_TRUE(extension) << message_;
+  ASSERT_TRUE(ready_listener.WaitUntilSatisfied());
+  ui_test_utils::NavigateToURL(browser(),
+                               embedded_test_server()->GetURL("/empty.html"));
+  content::WebContents* web_contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+  ASSERT_TRUE(web_contents);
+  ExtensionTestMessageListener preflight_listener("cors-preflight-succeeded",
+                                                  false);
+  const char kCORSPreflightedRequest[] = R"(
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', '%s');
+      xhr.setRequestHeader('%s', 'testvalue');
+      xhr.onload = () => {window.domAutomationController.send(true);};
+      xhr.onerror = () => {window.domAutomationController.send(false);};
+      xhr.send();)";
+  bool success = false;
+  ASSERT_TRUE(ExecuteScriptAndExtractBool(
+      web_contents->GetMainFrame(),
+      base::StringPrintf(kCORSPreflightedRequest, kCORSUrl,
+                         kCustomPreflightHeader),
+      &success));
+  EXPECT_TRUE(success);
+  EXPECT_TRUE(preflight_listener.WaitUntilSatisfied());
+  EXPECT_EQ(1, GetCountFromBackgroundPage(extension, profile(),
+                                          "preflightHeadersReceivedCount"));
+  EXPECT_EQ(1, GetCountFromBackgroundPage(extension, profile(),
+                                          "preflightProxyAuthRequiredCount"));
+  EXPECT_EQ(1, GetCountFromBackgroundPage(extension, profile(),
+                                          "preflightResponseStartedCount"));
+  EXPECT_EQ(1, GetCountFromBackgroundPage(
+                   extension, profile(),
+                   "preflightResponseStartedSuccessfullyCount"));
+}
+
 }  // namespace extensions
diff --git a/chrome/browser/extensions/service_worker_apitest.cc b/chrome/browser/extensions/service_worker_apitest.cc
index 2354607..c58b05e 100644
--- a/chrome/browser/extensions/service_worker_apitest.cc
+++ b/chrome/browser/extensions/service_worker_apitest.cc
@@ -81,6 +81,7 @@
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "services/network/public/cpp/is_potentially_trustworthy.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 #include "ui/message_center/public/cpp/notification.h"
 #include "url/url_constants.h"
@@ -89,6 +90,8 @@
 
 namespace {
 
+using ::testing::HasSubstr;
+
 class WebContentsLoadStopObserver : content::WebContentsObserver {
  public:
   explicit WebContentsLoadStopObserver(content::WebContents* web_contents)
@@ -415,8 +418,65 @@
   const ErrorList& error_list =
       error_console->GetErrorsForExtension(extension->id());
   ASSERT_EQ(kErrorsExpected, error_list.size());
-  ASSERT_EQ(error_list[0]->message(),
-            std::u16string(u"Service worker registration failed"));
+  ASSERT_EQ(
+      error_list[0]->message(),
+      std::u16string(u"Uncaught (in promise) TypeError: import() is disallowed "
+                     u"on ServiceWorkerGlobalScope by the HTML specification. "
+                     u"See https://github.com/w3c/ServiceWorker/issues/1356."));
+}
+
+// Tests that an error is generated if there is a syntax error in the service
+// worker script.
+IN_PROC_BROWSER_TEST_F(ServiceWorkerBasedBackgroundTest, SyntaxError) {
+  ErrorConsole* error_console = ErrorConsole::Get(profile());
+  // Error is observed on extension UI for developer mode only.
+  profile()->GetPrefs()->SetBoolean(prefs::kExtensionsUIDeveloperMode, true);
+  const size_t kErrorsExpected = 1u;
+  ErrorObserver observer(kErrorsExpected, error_console);
+
+  ExtensionTestMessageListener test_listener("ready", true);
+  const Extension* extension = LoadExtension(test_data_dir_.AppendASCII(
+      "service_worker/worker_based_background/syntax_error"));
+  ASSERT_TRUE(extension);
+
+  ASSERT_TRUE(test_listener.WaitUntilSatisfied());
+  test_listener.Reply("");
+  observer.WaitForErrors();
+
+  const ErrorList& error_list =
+      error_console->GetErrorsForExtension(extension->id());
+  ASSERT_EQ(kErrorsExpected, error_list.size());
+  EXPECT_EQ(ExtensionError::RUNTIME_ERROR, error_list[0]->type());
+  EXPECT_THAT(base::UTF16ToUTF8(error_list[0]->message()),
+              HasSubstr("Error handling response: TypeError: "
+                        "console.lg is not a function"));
+}
+
+// Tests that an error is generated if there is an undefined variable in the
+// service worker script.
+IN_PROC_BROWSER_TEST_F(ServiceWorkerBasedBackgroundTest, UndefinedVariable) {
+  ErrorConsole* error_console = ErrorConsole::Get(profile());
+  // Error is observed on extension UI for developer mode only.
+  profile()->GetPrefs()->SetBoolean(prefs::kExtensionsUIDeveloperMode, true);
+  const size_t kErrorsExpected = 1u;
+  ErrorObserver observer(kErrorsExpected, error_console);
+
+  ExtensionTestMessageListener test_listener("ready", true);
+  const Extension* extension = LoadExtension(test_data_dir_.AppendASCII(
+      "service_worker/worker_based_background/undefined_variable"));
+  ASSERT_TRUE(extension);
+
+  ASSERT_TRUE(test_listener.WaitUntilSatisfied());
+  test_listener.Reply("");
+  observer.WaitForErrors();
+
+  const ErrorList& error_list =
+      error_console->GetErrorsForExtension(extension->id());
+  ASSERT_EQ(kErrorsExpected, error_list.size());
+  EXPECT_EQ(ExtensionError::RUNTIME_ERROR, error_list[0]->type());
+  EXPECT_THAT(base::UTF16ToUTF8(error_list[0]->message()),
+              HasSubstr("Error handling response: ReferenceError: "
+                        "undefined_variable is not defined"));
 }
 
 // Tests chrome.runtime.onInstalled fires for extension service workers.
diff --git a/chrome/browser/favicon/favicon_utils.cc b/chrome/browser/favicon/favicon_utils.cc
index 0626815..56af7ab 100644
--- a/chrome/browser/favicon/favicon_utils.cc
+++ b/chrome/browser/favicon/favicon_utils.cc
@@ -158,9 +158,13 @@
 }
 
 gfx::Image GetDefaultFavicon() {
+  bool is_dark = false;
+#if !defined(OS_ANDROID)
+  // Android doesn't currently implement NativeTheme::GetInstanceForNativeUi.
   const ui::NativeTheme* native_theme =
       ui::NativeTheme::GetInstanceForNativeUi();
-  bool is_dark = native_theme && native_theme->ShouldUseDarkColors();
+  is_dark = native_theme && native_theme->ShouldUseDarkColors();
+#endif
   int resource_id = is_dark ? IDR_DEFAULT_FAVICON_DARK : IDR_DEFAULT_FAVICON;
   return ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(
       resource_id);
diff --git a/chrome/browser/flag-metadata.json b/chrome/browser/flag-metadata.json
index 8ca85ef3..7f9129c 100644
--- a/chrome/browser/flag-metadata.json
+++ b/chrome/browser/flag-metadata.json
@@ -1145,6 +1145,11 @@
     "expiry_milestone": 93
   },
   {
+    "name": "download-mobileconfig-file",
+    "owners": [ "ewannpv", "gambard" ],
+    "expiry_milestone": 95
+  },
+  {
     "name": "download-shelf-webui",
     "owners": [ "robliao", "chrome-webui-for-features@google.com" ],
     "expiry_milestone": 98
diff --git a/chrome/browser/history/history_tab_helper.cc b/chrome/browser/history/history_tab_helper.cc
index f4f1d6e..c911053 100644
--- a/chrome/browser/history/history_tab_helper.cc
+++ b/chrome/browser/history/history_tab_helper.cc
@@ -106,15 +106,27 @@
       !ui::PageTransitionIsMainFrame(navigation_handle->GetPageTransition()) ||
       status_code_is_error;
 
+  // If the full referrer URL is provided, use that. Otherwise, we probably have
+  // an incomplete referrer due to referrer policy (empty or origin-only).
+  // Fall back to the previous main frame URL if the referrer policy required
+  // that only the origin be sent as the referrer and it matches the previous
+  // main frame URL.
+  GURL referrer_url = navigation_handle->GetReferrer().url;
+  if (navigation_handle->IsInMainFrame() && !referrer_url.is_empty() &&
+      referrer_url == referrer_url.GetOrigin() &&
+      referrer_url.GetOrigin() ==
+          navigation_handle->GetPreviousMainFrameURL().GetOrigin()) {
+    referrer_url = navigation_handle->GetPreviousMainFrameURL();
+  }
+
   // Note: floc_allowed is set to false initially and is later updated by the
   // floc eligibility observer. Eventually it will be removed from the history
   // service API.
   history::HistoryAddPageArgs add_page_args(
       navigation_handle->GetURL(), timestamp,
       history::ContextIDForWebContents(web_contents()), nav_entry_id,
-      navigation_handle->GetReferrer().url,
-      navigation_handle->GetRedirectChain(), page_transition, hidden,
-      history::SOURCE_BROWSED, navigation_handle->DidReplaceEntry(),
+      referrer_url, navigation_handle->GetRedirectChain(), page_transition,
+      hidden, history::SOURCE_BROWSED, navigation_handle->DidReplaceEntry(),
       ShouldConsiderForNtpMostVisited(*web_contents(), navigation_handle),
       /*floc_allowed=*/false,
       navigation_handle->IsSameDocument()
diff --git a/chrome/browser/history/history_tab_helper_unittest.cc b/chrome/browser/history/history_tab_helper_unittest.cc
index cd77784c..512d29d 100644
--- a/chrome/browser/history/history_tab_helper_unittest.cc
+++ b/chrome/browser/history/history_tab_helper_unittest.cc
@@ -20,6 +20,7 @@
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/test/mock_navigation_handle.h"
 #include "content/public/test/web_contents_tester.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -107,7 +108,7 @@
     return result;
   }
 
-  std::set<GURL> GetMostVisistedURLSet() {
+  std::set<GURL> GetMostVisitedURLSet() {
     std::set<GURL> result;
     for (const history::MostVisitedURL& mv_url : QueryMostVisitedURLs()) {
       result.insert(mv_url.url);
@@ -159,6 +160,85 @@
   EXPECT_EQ("title10", QueryPageTitleFromHistory(page_url_));
 }
 
+TEST_F(HistoryTabHelperTest, CreateAddPageArgsReferringURLMainFrameNoReferrer) {
+  content::MockNavigationHandle navigation_handle(web_contents());
+  navigation_handle.set_redirect_chain({GURL("https://someurl.com")});
+  navigation_handle.set_previous_main_frame_url(GURL("http://previousurl.com"));
+  history::HistoryAddPageArgs args =
+      history_tab_helper()->CreateHistoryAddPageArgs(
+          GURL("http://someurl.com"), base::Time(), 1, &navigation_handle);
+
+  EXPECT_TRUE(args.referrer.is_empty());
+}
+
+TEST_F(HistoryTabHelperTest,
+       CreateAddPageArgsReferringURLMainFrameSameOriginReferrer) {
+  content::MockNavigationHandle navigation_handle(web_contents());
+  navigation_handle.set_redirect_chain({GURL("https://someurl.com")});
+  navigation_handle.set_previous_main_frame_url(
+      GURL("http://previousurl.com/abc"));
+  auto referrer = blink::mojom::Referrer::New();
+  referrer->url = navigation_handle.GetPreviousMainFrameURL().GetOrigin();
+  referrer->policy = network::mojom::ReferrerPolicy::kDefault;
+  navigation_handle.SetReferrer(std::move(referrer));
+  history::HistoryAddPageArgs args =
+      history_tab_helper()->CreateHistoryAddPageArgs(
+          GURL("http://someurl.com"), base::Time(), 1, &navigation_handle);
+
+  EXPECT_EQ(args.referrer, GURL("http://previousurl.com/abc"));
+}
+
+TEST_F(HistoryTabHelperTest,
+       CreateAddPageArgsReferringURLMainFrameSameOriginReferrerDifferentPath) {
+  content::MockNavigationHandle navigation_handle(web_contents());
+  navigation_handle.set_redirect_chain({GURL("https://someurl.com")});
+  navigation_handle.set_previous_main_frame_url(
+      GURL("http://previousurl.com/def"));
+  auto referrer = blink::mojom::Referrer::New();
+  referrer->url = GURL("http://previousurl.com/abc");
+  referrer->policy = network::mojom::ReferrerPolicy::kDefault;
+  navigation_handle.SetReferrer(std::move(referrer));
+  history::HistoryAddPageArgs args =
+      history_tab_helper()->CreateHistoryAddPageArgs(
+          GURL("http://someurl.com"), base::Time(), 1, &navigation_handle);
+
+  EXPECT_EQ(args.referrer, GURL("http://previousurl.com/abc"));
+}
+
+TEST_F(HistoryTabHelperTest,
+       CreateAddPageArgsReferringURLMainFrameCrossOriginReferrer) {
+  content::MockNavigationHandle navigation_handle(web_contents());
+  auto referrer = blink::mojom::Referrer::New();
+  referrer->url = GURL("http://crossorigin.com");
+  referrer->policy = network::mojom::ReferrerPolicy::kDefault;
+  navigation_handle.SetReferrer(std::move(referrer));
+  navigation_handle.set_redirect_chain({GURL("https://someurl.com")});
+  navigation_handle.set_previous_main_frame_url(GURL("http://previousurl.com"));
+  history::HistoryAddPageArgs args =
+      history_tab_helper()->CreateHistoryAddPageArgs(
+          GURL("http://someurl.com"), base::Time(), 1, &navigation_handle);
+
+  EXPECT_EQ(args.referrer, GURL("http://crossorigin.com"));
+}
+
+TEST_F(HistoryTabHelperTest, CreateAddPageArgsReferringURLNotMainFrame) {
+  content::RenderFrameHostTester* main_rfh_tester =
+      content::RenderFrameHostTester::For(main_rfh());
+  main_rfh_tester->InitializeRenderFrameIfNeeded();
+  content::RenderFrameHost* subframe = main_rfh_tester->AppendChild("subframe");
+  content::MockNavigationHandle navigation_handle(GURL("http://someurl.com"),
+                                                  subframe);
+  navigation_handle.set_redirect_chain({GURL("https://someurl.com")});
+  navigation_handle.set_previous_main_frame_url(GURL("http://previousurl.com"));
+  history::HistoryAddPageArgs args =
+      history_tab_helper()->CreateHistoryAddPageArgs(
+          GURL("http://someurl.com"), base::Time(), 1, &navigation_handle);
+
+  // Should default to referrer if not in main frame and the referrer should not
+  // be sent to the arbitrary previous URL that is set.
+  EXPECT_NE(args.referrer, GURL("http://previousurl.com"));
+}
+
 #if defined(OS_ANDROID)
 
 TEST_F(HistoryTabHelperTest, NonFeedNavigationsDoContributeToMostVisited) {
@@ -169,7 +249,7 @@
   web_contents_tester()->NavigateAndCommit(new_url,
                                            ui::PAGE_TRANSITION_AUTO_BOOKMARK);
 
-  EXPECT_THAT(GetMostVisistedURLSet(), testing::Contains(new_url));
+  EXPECT_THAT(GetMostVisitedURLSet(), testing::Contains(new_url));
 }
 
 TEST_F(HistoryTabHelperTest, FeedNavigationsDoNotContributeToMostVisited) {
@@ -179,8 +259,7 @@
   web_contents_tester()->NavigateAndCommit(new_url,
                                            ui::PAGE_TRANSITION_AUTO_BOOKMARK);
 
-  EXPECT_THAT(GetMostVisistedURLSet(),
-              testing::Not(testing::Contains(new_url)));
+  EXPECT_THAT(GetMostVisitedURLSet(), testing::Not(testing::Contains(new_url)));
 }
 
 #endif
diff --git a/chrome/browser/importer/profile_writer_unittest.cc b/chrome/browser/importer/profile_writer_unittest.cc
index f45cac1..5b5a692 100644
--- a/chrome/browser/importer/profile_writer_unittest.cc
+++ b/chrome/browser/importer/profile_writer_unittest.cc
@@ -16,7 +16,6 @@
 #include "base/test/bind.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/history/history_service_factory.h"
-#include "chrome/browser/importer/importer_unittest_utils.h"
 #include "chrome/browser/password_manager/password_manager_test_util.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/common/importer/imported_bookmark_entry.h"
diff --git a/chrome/browser/media/webrtc/capture_handle_browsertest.cc b/chrome/browser/media/webrtc/capture_handle_browsertest.cc
index 0da3428..372139b 100644
--- a/chrome/browser/media/webrtc/capture_handle_browsertest.cc
+++ b/chrome/browser/media/webrtc/capture_handle_browsertest.cc
@@ -123,19 +123,18 @@
         StringifyCaptureHandle(web_contents, expose_origin, handle);
   }
 
-  std::string ReadCaptureHandleFromSettings() {
+  std::string ReadCaptureHandle() {
     std::string script_result;
     EXPECT_TRUE(content::ExecuteScriptAndExtractString(
-        web_contents->GetMainFrame(), "readCaptureHandleFromSettings();",
-        &script_result));
+        web_contents->GetMainFrame(), "readCaptureHandle();", &script_result));
     return script_result;
   }
 
-  std::string ReadCaptureHandleFromSettingsInEmbeddedFrame() {
+  std::string ReadCaptureHandleInEmbeddedFrame() {
     std::string script_result;
     EXPECT_TRUE(content::ExecuteScriptAndExtractString(
-        web_contents->GetMainFrame(),
-        "readCaptureHandleFromSettingsInEmbeddedFrame();", &script_result));
+        web_contents->GetMainFrame(), "readCaptureHandleInEmbeddedFrame();",
+        &script_result));
     return script_result;
   }
 
@@ -339,8 +338,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -353,8 +351,7 @@
   capturing_tab.StartCapturing();
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -367,7 +364,7 @@
   capturing_tab.StartCapturing();
 
   // The capture handle isn't observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 // TODO(crbug.com/1217873): Test disabled on Mac due to multiple failing bots.
@@ -400,11 +397,11 @@
   capturing_tab.StartCapturingFromEmbeddedFrame();
 
   // The capture handle isn't observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettingsInEmbeddedFrame(),
+  EXPECT_EQ(capturing_tab.ReadCaptureHandleInEmbeddedFrame(),
             kNoEmbeddedCaptureHandle);
 
   // Even when the capture handle changes - no events are fired and the
-  // capture handle remains unobservable via getSettings.
+  // capture handle remains unobservable via getCaptureHandle.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                                       {top_level_capturer_origin.Serialize()});
 }
@@ -438,15 +435,15 @@
   capturing_tab.StartCapturingFromEmbeddedFrame();
 
   // The capture handle is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettingsInEmbeddedFrame(),
+  EXPECT_EQ(capturing_tab.ReadCaptureHandleInEmbeddedFrame(),
             captured_tab.capture_handle);
 
   // When the capture handle changes, events are fired and the
-  // capture handle remains observable via getSettings.
+  // capture handle remains observable via getCaptureHandle.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                                       {embedded_capturer_origin.Serialize()});
   EXPECT_EQ(capturing_tab.LastEmbeddedEvent(), captured_tab.capture_handle);
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettingsInEmbeddedFrame(),
+  EXPECT_EQ(capturing_tab.ReadCaptureHandleInEmbeddedFrame(),
             captured_tab.capture_handle);
 }
 
@@ -458,8 +455,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -472,8 +468,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -487,7 +482,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle isn't observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -499,14 +494,13 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // New CaptureHandleConfig set by captured tab triggers an event, and all
-  // subsequent calls to getSettings produce the new values.
+  // subsequent calls to getCaptureHandle produce the new values.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/false, "", {});
   EXPECT_EQ(capturing_tab.LastEvent(), "{}");
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -518,16 +512,14 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // New CaptureHandleConfig set by captured tab triggers an event, and all
-  // subsequent calls to getSettings produce the new values.
+  // subsequent calls to getCaptureHandle produce the new values.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                                       {"*"});
   EXPECT_EQ(capturing_tab.LastEvent(), captured_tab.capture_handle);
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -539,15 +531,13 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // New CaptureHandleConfig set by captured tab triggers an event, and all
-  // subsequent calls to getSettings produce the new values.
+  // subsequent calls to getCaptureHandle produce the new values.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/false, "handle", {"*"});
   EXPECT_EQ(capturing_tab.LastEvent(), captured_tab.capture_handle);
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -559,15 +549,14 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // New CaptureHandleConfig set by captured tab triggers an event, and all
-  // subsequent calls to getSettings produce the new values.
+  // subsequent calls to getCaptureHandle produce the new values.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "handle",
                                       {kArbitraryOrigin});
   EXPECT_EQ(capturing_tab.LastEvent(), "{}");
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -579,14 +568,13 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 
   // New CaptureHandleConfig set by captured tab triggers an event, and all
-  // subsequent calls to getSettings produce the new values.
+  // subsequent calls to getCaptureHandle produce the new values.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "handle", {"*"});
   EXPECT_EQ(capturing_tab.LastEvent(), captured_tab.capture_handle);
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -598,15 +586,13 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // The capture handle set by the captured tab is observable by the capturer.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // New CaptureHandleConfig set by captured tab triggers an event, and all
-  // subsequent calls to getSettings produce the new values.
+  // subsequent calls to getCaptureHandle produce the new values.
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "handle",
                                       {capturing_tab.GetOriginAsString()});
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -617,8 +603,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // Sanity test - there was an initial handle.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // In-document navigation does not change the capture handle (config).
   std::string navigation_result;
@@ -627,10 +612,9 @@
       &navigation_result));
   ASSERT_EQ(navigation_result, "navigated");
 
-  // No event was fired (verified in teardown) and getSettings returns the
+  // No event was fired (verified in teardown) and getCaptureHandle returns the
   // same configuration as previously.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -641,8 +625,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // Sanity test - there was an initial handle.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // Cross-document navigation clears the capture handle (config).
   captured_tab.Navigate(servers_[kCapturedServer]->GetURL(kCapturedPageOther),
@@ -651,7 +634,7 @@
   // Navigation cleared the the capture handle, and that fired an event
   // with the empty CaptureHandle.
   EXPECT_EQ(capturing_tab.LastEvent(), "{}");
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -662,8 +645,7 @@
   TabInfo capturing_tab = SetUpCapturingPage(/*start_capturing=*/true);
 
   // Sanity test - there was an initial handle.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(),
-            captured_tab.capture_handle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), captured_tab.capture_handle);
 
   // Sanity over the test itself - the new server has a different origin.
   ASSERT_FALSE(url::Origin::Create(servers_[kOtherCapturedServer]->base_url())
@@ -675,7 +657,7 @@
       servers_[kOtherCapturedServer]->GetURL(kCapturedPageOther),
       /*expect_handle_reset=*/true);
   EXPECT_EQ(capturing_tab.LastEvent(), "{}");
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -685,12 +667,12 @@
   tab.StartCapturing();
 
   // Correct initial value read.
-  EXPECT_EQ(tab.ReadCaptureHandleFromSettings(), tab.capture_handle);
+  EXPECT_EQ(tab.ReadCaptureHandle(), tab.capture_handle);
 
   // Events correctly fired when self-capturing.
   tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle", {"*"});
   EXPECT_EQ(tab.LastEvent(), tab.capture_handle);
-  EXPECT_EQ(tab.ReadCaptureHandleFromSettings(), tab.capture_handle);
+  EXPECT_EQ(tab.ReadCaptureHandle(), tab.capture_handle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -704,12 +686,12 @@
   tab.StartCapturing();
 
   // Correct initial value read.
-  EXPECT_EQ(tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(tab.ReadCaptureHandle(), kNoCaptureHandle);
 
   // No events fired when self-capturing but not allowed to observe.
   tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                              {kArbitraryOrigin});
-  EXPECT_EQ(tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -723,10 +705,10 @@
 
   // Can neither observe the value when capture starts, nor receive events when
   // the capture handle changes.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                                       {"*"});
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -740,10 +722,10 @@
 
   // Can neither observe the value when capture starts, nor receive events when
   // the capture handle changes.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                                       {"*"});
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(CaptureHandleBrowserTest,
@@ -757,10 +739,10 @@
 
   // Can neither observe the value when capture starts, nor receive events when
   // the capture handle changes.
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
   captured_tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle",
                                       {"*"});
-  EXPECT_EQ(capturing_tab.ReadCaptureHandleFromSettings(), kNoCaptureHandle);
+  EXPECT_EQ(capturing_tab.ReadCaptureHandle(), kNoCaptureHandle);
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -773,12 +755,12 @@
   tab.StartCapturing();
 
   // Can observe the value when capture starts.
-  EXPECT_EQ(tab.ReadCaptureHandleFromSettings(), tab.capture_handle);
+  EXPECT_EQ(tab.ReadCaptureHandle(), tab.capture_handle);
 
   // Receives event of changes to the capture handle.
   tab.SetCaptureHandleConfig(/*expose_origin=*/true, "new_handle", {"*"});
   EXPECT_EQ(tab.LastEvent(), tab.capture_handle);
-  EXPECT_EQ(tab.ReadCaptureHandleFromSettings(), tab.capture_handle);
+  EXPECT_EQ(tab.ReadCaptureHandle(), tab.capture_handle);
 }
 
 #endif  //  !BUILDFLAG(IS_CHROMEOS_LACROS)
diff --git a/chrome/browser/media/webrtc/media_stream_devices_controller_browsertest.cc b/chrome/browser/media/webrtc/media_stream_devices_controller_browsertest.cc
index e9223b9..7a76da6 100644
--- a/chrome/browser/media/webrtc/media_stream_devices_controller_browsertest.cc
+++ b/chrome/browser/media/webrtc/media_stream_devices_controller_browsertest.cc
@@ -10,7 +10,6 @@
 #include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
-#include "chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h"
 #include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
 #include "chrome/browser/media/webrtc/media_stream_capture_indicator.h"
 #include "chrome/browser/media/webrtc/media_stream_device_permissions.h"
@@ -25,6 +24,7 @@
 #include "chrome/test/base/ui_test_utils.h"
 #include "components/content_settings/browser/page_specific_content_settings.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
+#include "components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h"
 #include "components/permissions/permission_context_base.h"
 #include "components/permissions/permission_manager.h"
 #include "components/permissions/permission_request.h"
@@ -779,13 +779,14 @@
   };
 
   // Prevent automatic camera permission change when camera PTZ gets updated.
-  CameraPanTiltZoomPermissionContext* camera_pan_tilt_zoom_permission_context =
-      static_cast<CameraPanTiltZoomPermissionContext*>(
-          PermissionManagerFactory::GetForProfile(
-              Profile::FromBrowserContext(
-                  GetWebContents()->GetBrowserContext()))
-              ->GetPermissionContextForTesting(
-                  ContentSettingsType::CAMERA_PAN_TILT_ZOOM));
+  permissions::CameraPanTiltZoomPermissionContext*
+      camera_pan_tilt_zoom_permission_context =
+          static_cast<permissions::CameraPanTiltZoomPermissionContext*>(
+              PermissionManagerFactory::GetForProfile(
+                  Profile::FromBrowserContext(
+                      GetWebContents()->GetBrowserContext()))
+                  ->GetPermissionContextForTesting(
+                      ContentSettingsType::CAMERA_PAN_TILT_ZOOM));
   HostContentSettingsMap* content_settings =
       HostContentSettingsMapFactory::GetForProfile(
           Profile::FromBrowserContext(GetWebContents()->GetBrowserContext()));
diff --git a/chrome/browser/optimization_guide/page_text_observer_browsertest.cc b/chrome/browser/optimization_guide/page_text_observer_browsertest.cc
index d78f4c1..a40e74e 100644
--- a/chrome/browser/optimization_guide/page_text_observer_browsertest.cc
+++ b/chrome/browser/optimization_guide/page_text_observer_browsertest.cc
@@ -76,9 +76,7 @@
 
   bool was_called() const { return was_called_; }
 
-  absl::optional<PageTextDumpResult> result() {
-    return base::OptionalFromPtr(result_.get());
-  }
+  PageTextDumpResult* result() { return result_.get(); }
 
   // PageTextObserver::Consumer:
   std::unique_ptr<PageTextObserver::ConsumerTextDumpRequest>
@@ -99,7 +97,7 @@
   std::unique_ptr<PageTextObserver::ConsumerTextDumpRequest> request_;
 
   base::OnceClosure on_page_text_closure_;
-  std::unique_ptr<PageTextDumpResult> result_;
+  std::unique_ptr<PageTextDumpResult> result_ = nullptr;
 };
 
 }  // namespace
@@ -210,9 +208,7 @@
       }));
 }
 
-// Flaky. See crbug/1187264.
-IN_PROC_BROWSER_TEST_F(PageTextObserverBrowserTest,
-                       DISABLED_FirstLayoutAndOnLoad) {
+IN_PROC_BROWSER_TEST_F(PageTextObserverBrowserTest, FirstLayoutAndOnLoad) {
   PageTextObserver::CreateForWebContents(web_contents());
   ASSERT_TRUE(observer());
 
@@ -220,9 +216,6 @@
   // caused by the renderer never finishing the page load and is thus outside
   // the control of this feature. Thorough testing shows that this flake does
   // not repeat itself, so running the test an extra time is sufficient.
-  //
-  // If this test starts timing out or failing the |EXPECT_THAT| check, then
-  // that is indicative of a real issue.
   for (size_t i = 0; i < 2; i++) {
     TestConsumer first_layout_consumer;
     TestConsumer on_load_consumer;
@@ -256,30 +249,42 @@
     }
 
     ASSERT_TRUE(first_layout_consumer.result());
-    EXPECT_THAT(
-        first_layout_consumer.result()->frame_results(),
-        ::testing::UnorderedElementsAreArray({
-            MakeFrameDump(
-                mojom::TextDumpEvent::kFirstLayout,
-                web_contents()->GetMainFrame()->GetGlobalFrameRoutingId(),
-                /*amp_frame=*/false,
-                web_contents()
-                    ->GetController()
-                    .GetVisibleEntry()
-                    ->GetUniqueID(),
-                u"hello"),
-            MakeFrameDump(
-                mojom::TextDumpEvent::kFinishedLoad,
-                web_contents()->GetMainFrame()->GetGlobalFrameRoutingId(),
-                /*amp_frame=*/false,
-                web_contents()
-                    ->GetController()
-                    .GetVisibleEntry()
-                    ->GetUniqueID(),
-                u"hello\n\nworld"),
-        }));
 
-    EXPECT_EQ(first_layout_consumer.result(), on_load_consumer.result());
+    bool has_first_layout_event = false;
+    bool has_finished_load_event = false;
+    for (const FrameTextDumpResult& result :
+         first_layout_consumer.result()->frame_results()) {
+      SCOPED_TRACE(result);
+
+      // These fields are the same for both events.
+      EXPECT_EQ(web_contents()->GetMainFrame()->GetGlobalFrameRoutingId(),
+                result.rfh_id());
+      EXPECT_FALSE(result.amp_frame());
+      EXPECT_EQ(
+          web_contents()->GetController().GetVisibleEntry()->GetUniqueID(),
+          result.unique_navigation_id());
+
+      ASSERT_TRUE(result.contents().has_value());
+      // The text that is dumped during first layout may or may not include the
+      // text that is dynamically added by the test page's JavaScript. Checking
+      // for text equality is inherently flaky, and this determinism is not a
+      // guarantee that we make to callers.
+      if (result.event() == mojom::TextDumpEvent::kFirstLayout) {
+        EXPECT_TRUE(base::Contains(*result.contents(), u"hello"));
+        has_first_layout_event = true;
+      }
+
+      // The finished load event is deterministic in what text should be
+      // populated on the page.
+      if (result.event() == mojom::TextDumpEvent::kFinishedLoad) {
+        EXPECT_EQ(u"hello\n\nworld", *result.contents());
+        has_finished_load_event = true;
+      }
+    }
+
+    EXPECT_TRUE(has_first_layout_event);
+    EXPECT_TRUE(has_finished_load_event);
+    EXPECT_EQ(*first_layout_consumer.result(), *on_load_consumer.result());
     return;
   }
   FAIL();
diff --git a/chrome/browser/password_manager/chrome_password_manager_client.cc b/chrome/browser/password_manager/chrome_password_manager_client.cc
index f0098f9..8475d5b3 100644
--- a/chrome/browser/password_manager/chrome_password_manager_client.cc
+++ b/chrome/browser/password_manager/chrome_password_manager_client.cc
@@ -146,6 +146,7 @@
 
 #if BUILDFLAG(ENABLE_DICE_SUPPORT)
 #include "chrome/browser/signin/dice_web_signin_interceptor_factory.h"
+#include "chrome/browser/ui/browser.h"
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS_LACROS)
@@ -604,17 +605,17 @@
 void ChromePasswordManagerClient::TriggerReauthForPrimaryAccount(
     signin_metrics::ReauthAccessPoint access_point,
     base::OnceCallback<void(ReauthSucceeded)> reauth_callback) {
-#if defined(OS_ANDROID)
-  std::move(reauth_callback).Run(ReauthSucceeded(false));
-#else   // !defined(OS_ANDROID)
+#if BUILDFLAG(ENABLE_DICE_SUPPORT)
   account_storage_auth_helper_.TriggerOptInReauth(access_point,
                                                   std::move(reauth_callback));
-#endif  // defined(OS_ANDROID)
+#else
+  std::move(reauth_callback).Run(ReauthSucceeded(false));
+#endif
 }
 
 void ChromePasswordManagerClient::TriggerSignIn(
     signin_metrics::AccessPoint access_point) {
-#if !defined(OS_ANDROID)
+#if BUILDFLAG(ENABLE_DICE_SUPPORT)
   account_storage_auth_helper_.TriggerSignIn(access_point);
 #endif
 }
@@ -1182,12 +1183,19 @@
           this,
           base::BindRepeating(&GetSyncService, profile_),
           DiceWebSigninInterceptorFactory::GetForProfile(profile_)),
+      account_storage_auth_helper_(
+          IdentityManagerFactory::GetForProfile(profile_),
+          &password_feature_manager_,
+          base::BindRepeating(
+              [](content::WebContents* web_contents) {
+                Browser* browser =
+                    chrome::FindBrowserWithWebContents(web_contents);
+                return browser ? browser->signin_view_controller() : nullptr;
+              },
+              web_contents)),
 #else
       credentials_filter_(this, base::BindRepeating(&GetSyncService, profile_)),
 #endif
-#if !defined(OS_ANDROID)
-      account_storage_auth_helper_(profile_, &password_feature_manager_),
-#endif
       helper_(this) {
   ContentPasswordManagerDriverFactory::CreateForWebContents(web_contents, this,
                                                             autofill_client);
diff --git a/chrome/browser/password_manager/chrome_password_manager_client.h b/chrome/browser/password_manager/chrome_password_manager_client.h
index bc46fd7..e38b8b25 100644
--- a/chrome/browser/password_manager/chrome_password_manager_client.h
+++ b/chrome/browser/password_manager/chrome_password_manager_client.h
@@ -51,12 +51,11 @@
 
 class PasswordAccessoryController;
 class TouchToFillController;
-#else
-#include "chrome/browser/ui/passwords/account_storage_auth_helper.h"
 #endif
 
 #if BUILDFLAG(ENABLE_DICE_SUPPORT)
 #include "chrome/browser/password_manager/multi_profile_credentials_filter.h"
+#include "chrome/browser/ui/passwords/account_storage_auth_helper.h"
 #else
 #include "components/password_manager/core/browser/sync_credentials_filter.h"
 #endif
@@ -396,6 +395,7 @@
 #if BUILDFLAG(ENABLE_DICE_SUPPORT)
   // MultiProfileCredentialsFilter requires DICE support.
   const MultiProfileCredentialsFilter credentials_filter_;
+  AccountStorageAuthHelper account_storage_auth_helper_;
 #else
   const password_manager::SyncCredentialsFilter credentials_filter_;
 #endif
@@ -415,10 +415,6 @@
   // Whether OnPaste() was called from this ChromePasswordManagerClient
   bool was_on_paste_called_ = false;
 
-#if !defined(OS_ANDROID)
-  AccountStorageAuthHelper account_storage_auth_helper_;
-#endif
-
   // Helper for performing logic that is common between
   // ChromePasswordManagerClient and IOSChromePasswordManagerClient.
   password_manager::PasswordManagerClientHelper helper_;
diff --git a/chrome/browser/password_manager/generated_password_leak_detection_pref.cc b/chrome/browser/password_manager/generated_password_leak_detection_pref.cc
index 4b788d4..89dc54c5 100644
--- a/chrome/browser/password_manager/generated_password_leak_detection_pref.cc
+++ b/chrome/browser/password_manager/generated_password_leak_detection_pref.cc
@@ -28,11 +28,11 @@
   if (!identity_manager)
     return false;
 
-  const sync_ui_util::StatusLabels status_labels =
-      sync_ui_util::GetStatusLabels(profile);
+  const SyncStatusLabels status_labels = GetSyncStatusLabels(profile);
   bool sync_error =
-      status_labels.message_type == sync_ui_util::SYNC_ERROR ||
-      status_labels.message_type == sync_ui_util::PASSWORDS_ONLY_SYNC_ERROR;
+      status_labels.message_type == SyncStatusMessageType::kSyncError ||
+      status_labels.message_type ==
+          SyncStatusMessageType::kPasswordsOnlySyncError;
 
   // Password leak detection only requires a signed in account and a functioning
   // sync service, it does not require sync consent.
diff --git a/chrome/browser/permissions/permission_manager_factory.cc b/chrome/browser/permissions/permission_manager_factory.cc
index e847df5..45f888a 100644
--- a/chrome/browser/permissions/permission_manager_factory.cc
+++ b/chrome/browser/permissions/permission_manager_factory.cc
@@ -11,7 +11,6 @@
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/display_capture/display_capture_permission_context.h"
 #include "chrome/browser/idle/idle_detection_permission_context.h"
-#include "chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h"
 #include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
 #include "chrome/browser/media/webrtc/media_stream_device_permission_context.h"
 #include "chrome/browser/nfc/chrome_nfc_permission_context_delegate.h"
@@ -29,6 +28,7 @@
 #include "components/background_sync/background_sync_permission_context.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/permissions/contexts/accessibility_permission_context.h"
+#include "components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h"
 #include "components/permissions/contexts/clipboard_read_write_permission_context.h"
 #include "components/permissions/contexts/clipboard_sanitized_write_permission_context.h"
 #include "components/permissions/contexts/font_access_permission_context.h"
@@ -135,7 +135,7 @@
   permission_contexts[ContentSettingsType::STORAGE_ACCESS] =
       std::make_unique<StorageAccessGrantPermissionContext>(profile);
   permission_contexts[ContentSettingsType::CAMERA_PAN_TILT_ZOOM] =
-      std::make_unique<CameraPanTiltZoomPermissionContext>(
+      std::make_unique<permissions::CameraPanTiltZoomPermissionContext>(
           profile, MediaCaptureDevicesDispatcher::GetInstance());
   permission_contexts[ContentSettingsType::WINDOW_PLACEMENT] =
       std::make_unique<WindowPlacementPermissionContext>(profile);
diff --git a/chrome/browser/picture_in_picture/picture_in_picture_window_controller_browsertest.cc b/chrome/browser/picture_in_picture/picture_in_picture_window_controller_browsertest.cc
index b3de8af..67e2a62 100644
--- a/chrome/browser/picture_in_picture/picture_in_picture_window_controller_browsertest.cc
+++ b/chrome/browser/picture_in_picture/picture_in_picture_window_controller_browsertest.cc
@@ -9,7 +9,6 @@
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_observation.h"
-#include "base/strings/utf_string_conversions.h"
 #include "base/test/scoped_feature_list.h"
 #include "build/build_config.h"
 #include "build/chromeos_buildflags.h"
@@ -2242,28 +2241,6 @@
   WaitForTitle(active_web_contents, u"leavepictureinpicture");
 }
 
-// Tests that when closing the window after the player was reset, the <video>
-// element is still notified.
-IN_PROC_BROWSER_TEST_F(PictureInPictureWindowControllerBrowserTest,
-                       ResetPlayerCloseWindowNotifiesElement) {
-  LoadTabAndEnterPictureInPicture(
-      browser(), base::FilePath(kPictureInPictureWindowSizePage));
-  content::WebContents* active_web_contents =
-      browser()->tab_strip_model()->GetActiveWebContents();
-
-  // Video should be in Picture-in-Picture.
-  EXPECT_EQ(true, EvalJs(active_web_contents, "isInPictureInPicture();"));
-
-  // Reset video source and wait for the notification.
-  ASSERT_TRUE(ExecJs(active_web_contents, "resetVideo();"));
-  WaitForTitle(active_web_contents, u"emptied");
-
-  window_controller()->Close(true /* should_pause_video */);
-
-  // Video should no longer be in Picture-in-Picture.
-  ExpectLeavePictureInPicture(active_web_contents);
-}
-
 // Tests that play/pause video playback is toggled if there are no focus
 // afforfances on the Picture-in-Picture window buttons when user hits space
 // keyboard key.
diff --git a/chrome/browser/platform_util_linux.cc b/chrome/browser/platform_util_linux.cc
index cbe3372..f7e96b9f 100644
--- a/chrome/browser/platform_util_linux.cc
+++ b/chrome/browser/platform_util_linux.cc
@@ -13,7 +13,11 @@
 #include "base/threading/scoped_blocking_call.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/platform_util_internal.h"
-#include "components/dbus/thread_linux/dbus_thread_linux.h"
+// This file gets pulled in in Chromecast builds, which causes "gn check" to
+// complain as Chromecast doesn't use (or depend on) //components/dbus.
+// TODO(crbug.com/1215474): Eliminate //chrome being visible in the GN structure
+// on Chromecast and remove the nogncheck below.
+#include "components/dbus/thread_linux/dbus_thread_linux.h"  // nogncheck
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
diff --git a/chrome/browser/policy/configuration_policy_handler_list_factory.cc b/chrome/browser/policy/configuration_policy_handler_list_factory.cc
index aec7a020..768105be 100644
--- a/chrome/browser/policy/configuration_policy_handler_list_factory.cc
+++ b/chrome/browser/policy/configuration_policy_handler_list_factory.cc
@@ -1296,13 +1296,11 @@
     base::Value::Type::BOOLEAN },
 #endif // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 
-// TODO(crbug.com/1179280): Remove OS_LINUX once https://crbug.com/1169547 is
-// done.
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
   { key::kLacrosSecondaryProfilesAllowed,
     prefs::kLacrosSecondaryProfilesAllowed,
     base::Value::Type::BOOLEAN },
-#endif // defined(OS_LINUX) || defined(OS_CHROMEOS)
+#endif // defined(OS_CHROMEOS)
 
 #if !defined(OS_MAC) && !defined(OS_CHROMEOS)
   { key::kBackgroundModeEnabled,
diff --git a/chrome/browser/predictors/autocomplete_action_predictor_unittest.cc b/chrome/browser/predictors/autocomplete_action_predictor_unittest.cc
index 294ff432..0ae1560 100644
--- a/chrome/browser/predictors/autocomplete_action_predictor_unittest.cc
+++ b/chrome/browser/predictors/autocomplete_action_predictor_unittest.cc
@@ -21,7 +21,6 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/history/history_service_factory.h"
-#include "chrome/browser/prefetch/no_state_prefetch/prerender_test_utils.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/history/core/browser/history_service.h"
diff --git a/chrome/browser/prefetch/no_state_prefetch/prerender_unittest.cc b/chrome/browser/prefetch/no_state_prefetch/prerender_unittest.cc
index 19ac962..e2c59dbb 100644
--- a/chrome/browser/prefetch/no_state_prefetch/prerender_unittest.cc
+++ b/chrome/browser/prefetch/no_state_prefetch/prerender_unittest.cc
@@ -27,8 +27,8 @@
 #include "chrome/browser/predictors/loading_predictor.h"
 #include "chrome/browser/predictors/loading_predictor_factory.h"
 #include "chrome/browser/predictors/loading_test_util.h"
+#include "chrome/browser/prefetch/no_state_prefetch/chrome_no_state_prefetch_contents_delegate.h"
 #include "chrome/browser/prefetch/no_state_prefetch/chrome_no_state_prefetch_manager_delegate.h"
-#include "chrome/browser/prefetch/no_state_prefetch/prerender_test_utils.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
diff --git a/chrome/browser/profiles/profiles_state.cc b/chrome/browser/profiles/profiles_state.cc
index 4ed63401..1cf051d3 100644
--- a/chrome/browser/profiles/profiles_state.cc
+++ b/chrome/browser/profiles/profiles_state.cc
@@ -46,7 +46,6 @@
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS_LACROS)
-#include "chrome/browser/policy/chrome_browser_policy_connector.h"
 #include "chromeos/lacros/lacros_chrome_service_impl.h"
 #endif
 
@@ -85,11 +84,9 @@
       prefs::kBrowserProfilePickerAvailabilityOnStartup,
       static_cast<int>(ProfilePicker::AvailabilityOnStartup::kEnabled));
   registry->RegisterBooleanPref(prefs::kBrowserProfilePickerShown, false);
-// TODO(crbug.com/1179280): Remove OS_LINUX once https://crbug.com/1169547 is
-// done.
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
   registry->RegisterBooleanPref(prefs::kLacrosSecondaryProfilesAllowed, true);
-#endif  // defined(OS_LINUX) || defined(OS_CHROMEOS)
+#endif  // defined(OS_CHROMEOS)
 }
 
 void SetLastUsedProfile(const std::string& profile_dir) {
@@ -227,40 +224,10 @@
 }
 
 #if BUILDFLAG(IS_CHROMEOS_LACROS)
-// TODO(crbug.com/1179280): Remove this method and replace its calls with
-// direct check of pref::kLacrosSecondaryProfilesAllowed once
-// https://crbug.com/1169547 is done and default_for_enterprise_users in
-// policy_templates.json works in Lacros.
 bool AreSecondaryProfilesAllowed() {
   const PrefService* const pref_service = g_browser_process->local_state();
   DCHECK(pref_service);
-  const PrefService::Preference* lacros_secondary_profiles_preference =
-      pref_service->FindPreference(prefs::kLacrosSecondaryProfilesAllowed);
-  DCHECK(lacros_secondary_profiles_preference);
-
-  if (!lacros_secondary_profiles_preference->IsDefaultValue() ||
-      lacros_secondary_profiles_preference->IsManaged()) {
-    // Lacros pref is set by policy. Return state according to prefs.
-    return pref_service->GetBoolean(prefs::kLacrosSecondaryProfilesAllowed);
-  }
-
-  // Lacros pref is not set by its policy and has default true value. Secondary
-  // profiles shall be disabled for managed Lacros browser.
-  // Note: this is a temporary hack to make
-  // prefs::kLacrosSecondaryProfilesAllowed behave as if it's managed by a
-  // device policy with "default_for_enterprise_users: False". Once this tag in
-  // policy_templates.json works in Lacros (currently Ash only), this check will
-  // be removed and the perf will be checked directly.
-  DCHECK(pref_service->GetBoolean(prefs::kLacrosSecondaryProfilesAllowed));
-
-  if (!g_browser_process->browser_policy_connector()
-           ->HasMachineLevelPolicies()) {
-    // Lacros browser is not managed. Return true by default.
-    return true;
-  }
-
-  // Lacros browser is managed. Return false by default.
-  return false;
+  return pref_service->GetBoolean(prefs::kLacrosSecondaryProfilesAllowed);
 }
 #endif  // BUILDFLAG(IS_CHROMEOS_LACROS)
 
diff --git a/chrome/browser/resource_coordinator/tab_load_tracker_unittest.cc b/chrome/browser/resource_coordinator/tab_load_tracker_unittest.cc
index 1a36083d..bd096b3 100644
--- a/chrome/browser/resource_coordinator/tab_load_tracker_unittest.cc
+++ b/chrome/browser/resource_coordinator/tab_load_tracker_unittest.cc
@@ -10,7 +10,6 @@
 #include "base/process/kill.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/prefetch/no_state_prefetch/no_state_prefetch_manager_factory.h"
-#include "chrome/browser/prefetch/no_state_prefetch/prerender_test_utils.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/no_state_prefetch/browser/no_state_prefetch_handle.h"
diff --git a/chrome/browser/resources/BUILD.gn b/chrome/browser/resources/BUILD.gn
index 8859049..4d0684a 100644
--- a/chrome/browser/resources/BUILD.gn
+++ b/chrome/browser/resources/BUILD.gn
@@ -176,9 +176,6 @@
         "webapks:closure_compile",
       ]
     }
-    if (is_win || is_mac || is_linux || is_chromeos_lacros) {
-      deps += [ "browser_switch:closure_compile" ]
-    }
 
     # Note: The following targets should only be type-checked on Windows builds,
     # but because Window bots don't depend on Java, |closure_compile| is off on
diff --git a/chrome/browser/resources/browser_switch/BUILD.gn b/chrome/browser/resources/browser_switch/BUILD.gn
index 60dd306..ddac49fe 100644
--- a/chrome/browser/resources/browser_switch/BUILD.gn
+++ b/chrome/browser/resources/browser_switch/BUILD.gn
@@ -3,11 +3,13 @@
 # found in the LICENSE file.
 
 import("//chrome/common/features.gni")
-import("//third_party/closure_compiler/compile_js.gni")
 import("//tools/grit/grit_rule.gni")
 import("//tools/polymer/html_to_js.gni")
+import("//tools/typescript/ts_library.gni")
 import("//ui/webui/resources/tools/generate_grd.gni")
 
+assert(is_win || is_mac || is_linux || is_chromeos_lacros)
+
 grit("resources") {
   defines = chrome_grit_defines
 
@@ -27,60 +29,48 @@
 
 generate_grd("build_grd") {
   grd_prefix = "browser_switch"
-  input_files = [
-    "app.js",
-    "browser_switch.html",
-    "browser_switch_proxy.js",
-    "internals/browser_switch_internals.html",
-    "internals/browser_switch_internals.js",
-  ]
-  input_files_base_dir = rebase_path(target_gen_dir, root_build_dir)
-
   out_grd = "$target_gen_dir/resources.grd"
+  input_files = [
+    "browser_switch.html",
+    "internals/browser_switch_internals.html",
+  ]
+  input_files_base_dir = rebase_path(".", "//")
+
+  deps = [ ":build_ts" ]
+  manifest_files = [ "$target_gen_dir/tsconfig.manifest" ]
+}
+
+ts_library("build_ts") {
+  root_dir = target_gen_dir
+  out_dir = "$target_gen_dir/tsc"
+  tsconfig_base = "tsconfig_base.json"
+  in_files = [
+    "app.ts",
+    "browser_switch_proxy.ts",
+    "internals/browser_switch_internals.ts",
+  ]
+  definitions = [ "//tools/typescript/definitions/chrome_send.d.ts" ]
   deps = [
-    ":copy_files",
-    ":copy_files_internals",
+    "//third_party/polymer/v3_0:library",
+    "//ui/webui/resources:library",
+  ]
+  extra_deps = [
+    ":copy_browser_proxy",
+    ":copy_internals",
     ":web_components",
   ]
 }
 
-copy("copy_files") {
-  sources = [
-    "browser_switch.html",
-    "browser_switch_proxy.js",
-  ]
+copy("copy_browser_proxy") {
+  sources = [ "browser_switch_proxy.ts" ]
   outputs = [ "$target_gen_dir/{{source_file_part}}" ]
 }
 
-copy("copy_files_internals") {
-  sources = [
-    "internals/browser_switch_internals.html",
-    "internals/browser_switch_internals.js",
-  ]
+copy("copy_internals") {
+  sources = [ "internals/browser_switch_internals.ts" ]
   outputs = [ "$target_gen_dir/internals/{{source_file_part}}" ]
 }
 
-js_type_check("closure_compile") {
-  is_polymer3 = true
-  deps = [
-    ":app",
-    ":browser_switch_proxy",
-    "internals:browser_switch_internals",
-  ]
-}
-
-js_library("app") {
-  deps = [
-    "//third_party/polymer/v3_0/components-chromium/polymer:polymer_bundled",
-    "//ui/webui/resources/js:i18n_behavior.m",
-    "//ui/webui/resources/js:load_time_data.m",
-  ]
-}
-
-js_library("browser_switch_proxy") {
-  deps = [ "//ui/webui/resources/js:cr.m" ]
-}
-
 html_to_js("web_components") {
-  js_files = [ "app.js" ]
+  js_files = [ "app.ts" ]
 }
diff --git a/chrome/browser/resources/browser_switch/app.js b/chrome/browser/resources/browser_switch/app.ts
similarity index 79%
rename from chrome/browser/resources/browser_switch/app.js
rename to chrome/browser/resources/browser_switch/app.ts
index 5cb79eb..4e70997 100644
--- a/chrome/browser/resources/browser_switch/app.js
+++ b/chrome/browser/resources/browser_switch/app.ts
@@ -7,30 +7,23 @@
 import 'chrome://resources/polymer/v3_0/iron-icon/iron-icon.js';
 import './strings.m.js';
 
-import {I18nBehavior, I18nBehaviorInterface} from 'chrome://resources/js/i18n_behavior.m.js';
+import {I18nBehavior} from 'chrome://resources/js/i18n_behavior.m.js';
 import {loadTimeData} from 'chrome://resources/js/load_time_data.m.js';
 import {html, mixinBehaviors, PolymerElement} from 'chrome://resources/polymer/v3_0/polymer/polymer_bundled.min.js';
 
 import {BrowserSwitchProxy, BrowserSwitchProxyImpl} from './browser_switch_proxy.js';
 
-/** @type {number} */
-const MS_PER_SECOND = 1000;
+const MS_PER_SECOND: number = 1000;
 
-/** @enum {string} */
-const LaunchError = {
-  GENERIC_ERROR: 'genericError',
-  PROTOCOL_ERROR: 'protocolError',
-};
+enum LaunchError {
+  GENERIC_ERROR = 'genericError',
+  PROTOCOL_ERROR = 'protocolError',
+}
 
-/**
- * @constructor
- * @extends {PolymerElement}
- * @implements {I18nBehaviorInterface}
- */
 const BrowserSwitchAppElementBase =
-    mixinBehaviors([I18nBehavior], PolymerElement);
+    mixinBehaviors([I18nBehavior], PolymerElement) as
+    {new (): PolymerElement & I18nBehavior};
 
-/** @polymer */
 class BrowserSwitchAppElement extends BrowserSwitchAppElementBase {
   static get is() {
     return 'browser-switch-app';
@@ -44,7 +37,6 @@
     return {
       /**
        * URL to launch in the alternative browser.
-       * @private
        */
       url_: {
         type: String,
@@ -55,7 +47,6 @@
 
       /**
        * Error message, or empty string if no error has occurred (yet).
-       * @private
        */
       error_: {
         type: String,
@@ -65,7 +56,6 @@
       /**
        * Countdown displayed to the user, number of seconds until launching. If
        * 0 or less, doesn't get displayed at all.
-       * @private
        */
       secondCounter_: {
         type: Number,
@@ -74,6 +64,10 @@
     };
   }
 
+  private url_: string;
+  private error_: string;
+  private secondCounter_: number;
+
   /** @override */
   connectedCallback() {
     super.connectedCallback();
@@ -100,8 +94,7 @@
     this.startCountdown_(Math.floor(milliseconds / 1000));
   }
 
-  /** @private */
-  launchAndCloseTab_() {
+  private launchAndCloseTab_() {
     // Mark this page with '?done=...' so that restoring the tab doesn't
     // immediately re-trigger LBS.
     history.pushState({}, '', '/?done=true');
@@ -111,11 +104,7 @@
     });
   }
 
-  /**
-   * @param {number} seconds
-   * @private
-   */
-  startCountdown_(seconds) {
+  private startCountdown_(seconds: number) {
     this.secondCounter_ = seconds;
     const intervalId = setInterval(() => {
       this.secondCounter_--;
@@ -125,11 +114,7 @@
     }, 1 * MS_PER_SECOND);
   }
 
-  /**
-   * @return {string}
-   * @private
-   */
-  computeTitle_() {
+  private computeTitle_(): string {
     if (this.error_) {
       return this.i18n('errorTitle', getBrowserName());
     }
@@ -139,11 +124,7 @@
     return this.i18n('openingTitle', getBrowserName());
   }
 
-  /**
-   * @return {string}
-   * @private
-   */
-  computeDescription_() {
+  private computeDescription_(): string {
     if (this.error_) {
       return this.i18n(
           this.error_, getUrlHostname(this.url_), getBrowserName());
@@ -155,23 +136,17 @@
 
 customElements.define(BrowserSwitchAppElement.is, BrowserSwitchAppElement);
 
-/** @return {string} */
-function getBrowserName() {
+function getBrowserName(): string {
   return loadTimeData.getString('browserName');
 }
 
-/**
- * @param {string} url
- * @return {string}
- */
-function getUrlHostname(url) {
+function getUrlHostname(url: string): string {
   const anchor = document.createElement('a');
   anchor.href = url;
   // Return entire url if parsing failed (which means the URL is bogus).
   return anchor.hostname || url;
 }
 
-/** @return {!BrowserSwitchProxy} */
-function getProxy() {
+function getProxy(): BrowserSwitchProxy {
   return BrowserSwitchProxyImpl.getInstance();
 }
diff --git a/chrome/browser/resources/browser_switch/browser_switch_proxy.js b/chrome/browser/resources/browser_switch/browser_switch_proxy.js
deleted file mode 100644
index c9c5ddb..0000000
--- a/chrome/browser/resources/browser_switch/browser_switch_proxy.js
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2019 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import {sendWithPromise} from 'chrome://resources/js/cr.m.js';
-
-/** @interface */
-export class BrowserSwitchProxy {
-  /**
-   * @param {string} url URL to open in alternative browser.
-   * @return {Promise} A promise that can fail if unable to launch. It will
-   *     never resolve, because the tab closes if this succeeds.
-   */
-  launchAlternativeBrowserAndCloseTab(url) {}
-
-  gotoNewTabPage() {}
-}
-
-/** @implements {BrowserSwitchProxy} */
-export class BrowserSwitchProxyImpl {
-  /** @override */
-  launchAlternativeBrowserAndCloseTab(url) {
-    return sendWithPromise('launchAlternativeBrowserAndCloseTab', url);
-  }
-
-  /** @override */
-  gotoNewTabPage() {
-    chrome.send('gotoNewTabPage');
-  }
-
-  /** @return {!BrowserSwitchProxy} */
-  static getInstance() {
-    return instance || (instance = new BrowserSwitchProxyImpl());
-  }
-}
-
-/** @type {?BrowserSwitchProxy} */
-let instance = null;
diff --git a/chrome/browser/resources/browser_switch/browser_switch_proxy.ts b/chrome/browser/resources/browser_switch/browser_switch_proxy.ts
new file mode 100644
index 0000000..ff612cb0
--- /dev/null
+++ b/chrome/browser/resources/browser_switch/browser_switch_proxy.ts
@@ -0,0 +1,33 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import {sendWithPromise} from 'chrome://resources/js/cr.m.js';
+
+/** @interface */
+export interface BrowserSwitchProxy {
+  /**
+   * @param URL to open in alternative browser.
+   * @return A promise that can fail if unable to launch. It will never resolve,
+   *     because the tab closes if this succeeds.
+   */
+  launchAlternativeBrowserAndCloseTab(url: string): Promise<void>;
+
+  gotoNewTabPage(): void;
+}
+
+export class BrowserSwitchProxyImpl implements BrowserSwitchProxy {
+  launchAlternativeBrowserAndCloseTab(url: string) {
+    return sendWithPromise('launchAlternativeBrowserAndCloseTab', url);
+  }
+
+  gotoNewTabPage() {
+    chrome.send('gotoNewTabPage');
+  }
+
+  static getInstance(): BrowserSwitchProxy {
+    return instance || (instance = new BrowserSwitchProxyImpl());
+  }
+}
+
+let instance: BrowserSwitchProxy|null = null;
diff --git a/chrome/browser/resources/browser_switch/internals/browser_switch_internals.js b/chrome/browser/resources/browser_switch/internals/browser_switch_internals.ts
similarity index 68%
rename from chrome/browser/resources/browser_switch/internals/browser_switch_internals.js
rename to chrome/browser/resources/browser_switch/internals/browser_switch_internals.ts
index b79d221..7c899e3 100644
--- a/chrome/browser/resources/browser_switch/internals/browser_switch_internals.js
+++ b/chrome/browser/resources/browser_switch/internals/browser_switch_internals.ts
@@ -5,46 +5,36 @@
 import {sendWithPromise} from 'chrome://resources/js/cr.m.js';
 import {$} from 'chrome://resources/js/util.m.js';
 
-/**
- * @typedef {{
- *   sitelist: Array<string>,
- *   greylist: Array<string>,
- * }}
- */
-let RuleSet;
+type RuleSet = {
+  sitelist: Array<string>;
+  greylist: Array<string>;
+};
 
-/**
- * @typedef {{
- *   gpo: RuleSet,
- *   ieem: (RuleSet|undefined),
- *   external: (RuleSet|undefined),
- * }}
- */
-let RuleSetList;
+type RuleSetList = {
+  gpo: RuleSet;
+  ieem?: RuleSet;
+  external?: RuleSet;
+};
 
 /**
  * Returned by getRulesetSources().
- * @typedef {{
- *   browser_switcher: Object<string, string>!,
- * }}
  */
-let RulesetSources;
+type RulesetSources = {
+  browser_switcher: {[k: string]: string};
+};
 
 /**
  * Returned by getTimestamps().
- * @typedef {{
- *   last_fetch: number,
- *   next_fetch: number,
- * }}
  */
-let TimestampPair;
+type TimestampPair = {
+  last_fetch: number;
+  next_fetch: number;
+};
 
 /**
  * Converts 'this_word' to 'ThisWord'
- * @param {string} symbol
- * @return {string}
  */
-function snakeCaseToUpperCamelCase(symbol) {
+function snakeCaseToUpperCamelCase(symbol: string): string {
   if (!symbol) {
     return symbol;
   }
@@ -55,21 +45,19 @@
 
 /**
  * Clears the table, and inserts a header row.
- * @param {HTMLTableElement} table
- * @param {HTMLTemplateElement} headerTemplate
- *     Template to use to re-create the header row.
+ * @param headerTemplate Template to use to re-create the header row.
  */
-function clearTable(table, headerTemplate) {
+function clearTable(
+    table: HTMLTableElement, headerTemplate: HTMLTemplateElement) {
   table.innerHTML = '';
   const headerRow = document.importNode(headerTemplate.content, true);
   table.appendChild(headerRow);
 }
 
 /**
- * @param {string} rule
- * @return {string} String describing the rule type.
+ * @return String describing the rule type.
  */
-function getRuleType(rule) {
+function getRuleType(rule: string): string {
   if (rule == '*') {
     return 'wildcard';
   }
@@ -81,33 +69,31 @@
 
 /**
  * Creates and returns a <tr> element for the given rule.
- * @param {string} rule
- * @param {string} rulesetName
- * @return {HTMLTableRowElement}
  */
-function createRowForRule(rule, rulesetName) {
-  const row = document.importNode($('rule-row-template').content, true);
+function createRowForRule(
+    rule: string, rulesetName: string): HTMLTableRowElement {
+  const row = document.importNode(
+                  ($('rule-row-template') as HTMLTemplateElement).content,
+                  true) as unknown as HTMLTableRowElement;
   const cells = row.querySelectorAll('td');
   cells[0].innerText = rule;
   cells[0].className = 'url';
   cells[1].innerText = rulesetName;
   cells[2].innerText = getRuleType(rule);
   cells[3].innerText = /^!/.test(rule) ? 'yes' : 'no';
-  return /** @type {HTMLTableRowElement} */ (row);
+  return row;
 }
 
 /**
  * Updates the content of all tables after receiving data from the backend.
- * @param {RuleSetList} rulesets
  */
-function updateTables(rulesets) {
-  const headerTemplate =
-      /** @type {HTMLTemplateElement} */ ($('header-row-template'));
-  clearTable(/** @type {HTMLTableElement} */ ($('sitelist')), headerTemplate);
-  clearTable(/** @type {HTMLTableElement} */ ($('greylist')), headerTemplate);
+function updateTables(rulesets: RuleSetList) {
+  const headerTemplate = $('header-row-template') as HTMLTemplateElement;
+  clearTable($('sitelist') as HTMLTableElement, headerTemplate);
+  clearTable($('greylist') as HTMLTableElement, headerTemplate);
 
   for (const [rulesetName, ruleset] of Object.entries(rulesets)) {
-    for (const [listName, rules] of Object.entries(ruleset)) {
+    for (const [listName, rules] of Object.entries(ruleset as RuleSet)) {
       const table = $(listName);
       for (const rule of rules) {
         table.appendChild(createRowForRule(rule, rulesetName));
@@ -117,7 +103,7 @@
 }
 
 function checkUrl() {
-  const url = $('url-checker-input').value;
+  const url = ($('url-checker-input') as HTMLInputElement).value;
   if (!url) {
     $('output').innerText = '';
     return;
@@ -127,7 +113,7 @@
         // URL is valid.
         $('output').innerText = JSON.stringify(decision, null, 2);
       })
-      .catch(err => {
+      .catch(() => {
         // URL is invalid.
         $('output').innerText =
             'Invalid URL. Make sure it is formatted properly.';
@@ -138,10 +124,8 @@
 
 /**
  * Formats |date| as "HH:MM:SS".
- * @param {Date} date
- * @return {string}
  */
-function formatTime(date) {
+function formatTime(date: Date): string {
   const hh = date.getHours().toString().padStart(2, '0');
   const mm = date.getMinutes().toString().padStart(2, '0');
   const ss = date.getSeconds().toString().padStart(2, '0');
@@ -150,9 +134,8 @@
 
 /**
  * Update the paragraphs under the "XML sitelists" section.
- * @param {TimestampPair?} timestamps
  */
-function updateTimestamps(timestamps) {
+function updateTimestamps(timestamps: TimestampPair|null) {
   if (!timestamps) {
     return;
   }
@@ -178,20 +161,18 @@
 
 /**
  * Update the table under the "XML sitelists" section.
- * @param {RulesetSources} sources
  */
-function updateXmlTable({browser_switcher: sources}) {
-  const headerTemplate =
-      /** @type {HTMLTemplateElement} */ ($('xml-header-row-template'));
-  clearTable(
-      /** @type {HTMLTableElement} */ ($('xml-sitelists')), headerTemplate);
+function updateXmlTable({browser_switcher: sources}: RulesetSources) {
+  const headerTemplate = $('xml-header-row-template') as HTMLTemplateElement;
+  clearTable($('xml-sitelists') as HTMLTableElement, headerTemplate);
 
   for (const [prefName, url] of Object.entries(sources)) {
     // Hacky: guess the policy name from the pref name by converting 'foo_bar'
     // to 'BrowserSwitcherFooBar'. This relies on prefs having the same name as
     // the associated policy.
     const policyName = 'BrowserSwitcher' + snakeCaseToUpperCamelCase(prefName);
-    const row = document.importNode($('xml-row-template').content, true);
+    const row = document.importNode(
+        ($('xml-row-template') as HTMLTemplateElement).content, true);
     const cells = row.querySelectorAll('td');
     cells[0].innerText = policyName;
     cells[1].innerText = url || '(not configured)';
diff --git a/chrome/browser/resources/browser_switch/tsconfig_base.json b/chrome/browser/resources/browser_switch/tsconfig_base.json
new file mode 100644
index 0000000..afa07315
--- /dev/null
+++ b/chrome/browser/resources/browser_switch/tsconfig_base.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../../../../tools/typescript/tsconfig_base.json",
+  "compilerOptions": {
+    "noUncheckedIndexedAccess": false,
+    "noUnusedLocals": false,
+    "strictPropertyInitialization": false
+  }
+}
diff --git a/chrome/browser/resources/chromeos/accessibility/chromevox/tools/generate_test_messages.py b/chrome/browser/resources/chromeos/accessibility/chromevox/tools/generate_test_messages.py
index 841ed93e..791cba95 100755
--- a/chrome/browser/resources/chromeos/accessibility/chromevox/tools/generate_test_messages.py
+++ b/chrome/browser/resources/chromeos/accessibility/chromevox/tools/generate_test_messages.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3.6
 
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
@@ -10,10 +10,14 @@
 import optparse
 import sys
 
+logfp = open('/tmp/pylog.txt', 'a+')
+logfp.write('generate_test_messages.py ' + sys.version + '\n')
+logfp.close()
+
 
 def Die(message):
   '''Prints an error message and exit the program.'''
-  print >> sys.stderr, message
+  print(message, file=sys.stderr)
   sys.exit(1)
 
 
diff --git a/chrome/browser/resources/chromeos/accessibility/chromevox/tools/jsbundler.py b/chrome/browser/resources/chromeos/accessibility/chromevox/tools/jsbundler.py
index 89337cf..405d5c0 100755
--- a/chrome/browser/resources/chromeos/accessibility/chromevox/tools/jsbundler.py
+++ b/chrome/browser/resources/chromeos/accessibility/chromevox/tools/jsbundler.py
@@ -44,8 +44,8 @@
                  'third_party/devtools-frontend/src/scripts/build'))
 sys.path.insert(
     0,
-    os.path.join(_CHROME_SOURCE, ('third_party/chromevox/third_party/' +
-                                  'closure-library/closure/bin/build')))
+    os.path.join(_CHROME_SOURCE, ('third_party/google-closure-library/' +
+                                  'closure/bin/build')))
 import depstree
 import rjsmin
 import source
@@ -54,7 +54,7 @@
 
 def Die(message):
   '''Prints an error message and exit the program.'''
-  print >> sys.stderr, message
+  print(message, file=sys.stderr)
   sys.exit(1)
 
 
@@ -75,7 +75,7 @@
   def __str__(self):
     return self.GetOutPath()
 
-class Bundle():
+class Bundle(object):
   '''An ordered list of sources without duplicates.'''
 
   def __init__(self):
@@ -113,7 +113,7 @@
     return rjsmin.jsmin(self.GetUncompressedSource())
 
 
-class PathRewriter():
+class PathRewriter(object):
   '''A list of simple path rewrite rules to map relative input paths to
   relative output paths.
   '''
@@ -189,7 +189,7 @@
   Returns:
     SourceWithPath: The source file providing the goog namespace.
   '''
-  for source in sources.itervalues():
+  for source in list(sources.values()):
     if (os.path.basename(source.GetInPath()) == 'base.js' and
         'goog' in source.provides):
       return source
@@ -205,11 +205,15 @@
     top_level, list: List of top-level input paths to calculate dependencies
       for.
   '''
-  providers = [s for s in sources.itervalues() if len(s.provides) > 0]
+  providers = [s for s in list(sources.values()) if len(s.provides) > 0]
+  providers.sort(key=lambda x:str(x))
+  for p in providers:
+    p.requires = sorted(list(p.requires))
   deps = depstree.DepsTree(providers)
   namespaces = []
   for path in top_level:
-    namespaces.extend(sources[path].requires)
+    namespaces.extend(sorted(sources[path].requires))
+  namespaces.sort()
   # base.js is an implicit dependency that always goes first.
   bundle.Add(_GetBase(sources))
   bundle.Add(deps.GetDependencies(namespaces))
@@ -270,16 +274,16 @@
     if dest_dir:
       paths = (os.path.join(dest_dir, p) for p in paths)
     paths = (os.path.normpath(p) for p in paths)
-    out_file.write('\n'.join(paths))
+    out_file.write('\n'.join(paths).encode('utf-8'))
   elif format == 'html':
     HTML_TEMPLATE = '<script src=\'%s\'>'
     script_lines = (HTML_TEMPLATE % p for p in bundle.GetOutPaths())
-    out_file.write('\n'.join(script_lines))
+    out_file.write('\n'.join(script_lines).encode('utf-8'))
   elif format == 'bundle':
-    out_file.write(bundle.GetUncompressedSource())
+    out_file.write(bundle.GetUncompressedSource().encode('utf-8'))
   elif format == 'compressed_bundle':
-    out_file.write(bundle.GetCompressedSource())
-  out_file.write('\n')
+    out_file.write(bundle.GetCompressedSource().encode('utf-8'))
+  out_file.write('\n'.encode('utf-8'))
 
 
 def WriteStampfile(stampfile):
@@ -406,9 +410,9 @@
     LinkOrCopyFiles(bundle.GetSources(), options.dest_dir)
   else:
     if options.output_file:
-      out_file = open(options.output_file, 'w')
+      out_file = open(options.output_file, 'wb')
     else:
-      out_file = sys.stdout
+      out_file = sys.stdout.buffer
     try:
       WriteOutput(bundle, options.mode, out_file, options.dest_dir)
     finally:
diff --git a/chrome/browser/resources/chromeos/accessibility/common/run_jsbundler.gni b/chrome/browser/resources/chromeos/accessibility/common/run_jsbundler.gni
index a7481653..712bd42 100644
--- a/chrome/browser/resources/chromeos/accessibility/common/run_jsbundler.gni
+++ b/chrome/browser/resources/chromeos/accessibility/common/run_jsbundler.gni
@@ -31,8 +31,7 @@
     rewrite_rules = []
   }
 
-  # TODO(crbug.com/1112471): Get this to run cleanly under Python 3.
-  python2_action(target_name) {
+  action(target_name) {
     script = "//chrome/browser/resources/chromeos/accessibility/chromevox/tools/jsbundler.py"
     inputs = jsbundler_modules
     sources = invoker.sources
diff --git a/chrome/browser/resources/chromeos/accessibility/switch_access/item_scan_manager_test.js b/chrome/browser/resources/chromeos/accessibility/switch_access/item_scan_manager_test.js
index 8e0e24d..962de7c 100644
--- a/chrome/browser/resources/chromeos/accessibility/switch_access/item_scan_manager_test.js
+++ b/chrome/browser/resources/chromeos/accessibility/switch_access/item_scan_manager_test.js
@@ -504,6 +504,7 @@
   });
 });
 
+
 TEST_F('SwitchAccessItemScanManagerTest', 'SyncFocusToNewWindow', function() {
   const website1 = `<button autofocus>one</button>`;
   const website2 = `<button autofocus>two</button>`;
@@ -573,3 +574,57 @@
     });
   });
 });
+
+// TODO(crbug.com/1219067): Fails in MSAN builds.
+TEST_F_WITH_PREAMBLE(
+    `
+#if defined(MEMORY_SANITIZER)
+#define MAYBE_LockScreenBlocksUserSession DISABLED_LockScreenBlocksUserSession
+#else
+#define MAYBE_LockScreenBlocksUserSession LockScreenBlocksUserSession
+#endif
+`,
+    'SwitchAccessItemScanManagerTest', 'MAYBE_LockScreenBlocksUserSession',
+    function() {
+      const website = `<button autofocus>kitties!</button>`;
+      this.runWithLoadedTree(website, async (root) => {
+        let button =
+            await this.untilFocusIs({role: chrome.automation.RoleType.BUTTON});
+        assertEquals('kitties!', button.automationNode.name);
+
+        // Lock the screen.
+        EventGenerator.sendKeyPress(KeyCode.L, {search: true});
+
+        // Wait for focus to move to the password field.
+        await this.untilFocusIs({
+          role: chrome.automation.RoleType.TEXT_FIELD,
+          name: 'Password for stub-user@example.com'
+        });
+
+        // The button is no longer in the tree because the screen is locked.
+        const predicate = (node) => node.name === 'kitties!' &&
+            node.role === chrome.automation.RoleType.BUTTON;
+        assertNotNullNorUndefined(
+            this.desktop_, 'this.desktop_ is null or undefined.');
+        const treeWalker = new AutomationTreeWalker(
+            this.desktop_, constants.Dir.FORWARD, {visit: predicate});
+        const node = treeWalker.next().node;
+        assertEquals(null, node);
+
+        // Log in again and confirm that the button is back and gets focus
+        // again.
+        EventGenerator.sendKeyPress(KeyCode.T);
+        EventGenerator.sendKeyPress(KeyCode.E);
+        EventGenerator.sendKeyPress(KeyCode.S);
+        EventGenerator.sendKeyPress(KeyCode.T);
+        EventGenerator.sendKeyPress(KeyCode.ZERO);
+        EventGenerator.sendKeyPress(KeyCode.ZERO);
+        EventGenerator.sendKeyPress(KeyCode.ZERO);
+        EventGenerator.sendKeyPress(KeyCode.ZERO);
+        EventGenerator.sendKeyPress(KeyCode.RETURN);
+
+        button =
+            await this.untilFocusIs({role: chrome.automation.RoleType.BUTTON});
+        assertEquals('kitties!', button.automationNode.name);
+      });
+    });
diff --git a/chrome/browser/resources/settings/chromeos/bluetooth_page/bluetooth_subpage.js b/chrome/browser/resources/settings/chromeos/bluetooth_page/bluetooth_subpage.js
index 248331b1..85c63c5 100644
--- a/chrome/browser/resources/settings/chromeos/bluetooth_page/bluetooth_subpage.js
+++ b/chrome/browser/resources/settings/chromeos/bluetooth_page/bluetooth_subpage.js
@@ -270,7 +270,8 @@
 
   /** @private */
   computeShowSpinner_() {
-    return !this.dialogShown_ && this.get('adapterState.discovering');
+    return !this.dialogShown_ && this.adapterState &&
+        this.adapterState.discovering;
   },
 
   /** @private */
@@ -361,7 +362,7 @@
 
   /** @private */
   stopDiscovery_() {
-    if (!this.get('adapterState.discovering')) {
+    if (!this.adapterState || !this.adapterState.discovering) {
       return;
     }
 
diff --git a/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/share_sheet/ChromeProvidedSharingOptionsProvider.java b/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/share_sheet/ChromeProvidedSharingOptionsProvider.java
index f4b3b65b..aa96582 100644
--- a/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/share_sheet/ChromeProvidedSharingOptionsProvider.java
+++ b/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/share_sheet/ChromeProvidedSharingOptionsProvider.java
@@ -438,13 +438,14 @@
     }
 
     private FirstPartyOption createWebNotesStylizeFirstPartyOption() {
+        String title = mTabProvider.get().getTitle();
         return new FirstPartyOptionBuilder(ContentType.HIGHLIGHTED_TEXT)
                 .setIcon(R.drawable.webnote, R.string.sharing_webnotes_stylized)
                 .setFeatureNameForMetrics("SharingHubAndroid.WebnotesStylize")
                 .setOnClickCallback((view) -> {
-                    NoteCreationCoordinator coordinator =
-                            NoteCreationCoordinatorFactory.create(mActivity, mTabProvider.get(),
-                                    mUrl, mShareParams.getText(), mChromeOptionShareCallback);
+                    NoteCreationCoordinator coordinator = NoteCreationCoordinatorFactory.create(
+                            mActivity, mTabProvider.get(), mUrl, title, mShareParams.getText(),
+                            mChromeOptionShareCallback);
                     coordinator.showDialog();
                 })
                 .build();
diff --git a/chrome/browser/share/share_ranking.cc b/chrome/browser/share/share_ranking.cc
index 2db7e54..15e47902 100644
--- a/chrome/browser/share/share_ranking.cc
+++ b/chrome/browser/share/share_ranking.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/share/share_ranking.h"
 
+#include "base/strings/string_util.h"
 #include "base/task/task_traits.h"
 #include "base/task/thread_pool.h"
 #include "chrome/browser/profiles/profile.h"
@@ -12,6 +13,8 @@
 
 namespace sharing {
 
+const char* const ShareRanking::kMoreTarget = "$more";
+
 namespace {
 
 const char* const kShareRankingFolder = "share_ranking";
@@ -27,6 +30,162 @@
               {base::MayBlock(), base::TaskPriority::BEST_EFFORT}));
 }
 
+bool RankingContains(const std::vector<std::string>& ranking,
+                     const std::string& element,
+                     unsigned int upto_index = UINT_MAX) {
+  for (unsigned int i = 0; i < ranking.size() && i < upto_index; ++i) {
+    if (ranking[i] == element)
+      return true;
+  }
+  return false;
+}
+
+std::vector<std::string> RankByUses(const std::map<std::string, int>& uses) {
+  std::vector<std::string> ranked_uses;
+  std::transform(uses.begin(), uses.end(), std::back_inserter(ranked_uses),
+                 [](const auto& entry) { return entry.first; });
+  std::sort(ranked_uses.begin(), ranked_uses.end(),
+            [&](const std::string& a, const std::string& b) {
+              return uses.at(a) < uses.at(b);
+            });
+  return ranked_uses;
+}
+
+std::string HighestUnshown(const std::vector<std::string>& shown,
+                           const std::map<std::string, int>& uses,
+                           unsigned int fold) {
+  std::vector<std::string> ranked = RankByUses(uses);
+  auto in_shown_above_fold = [&](const std::string& e) {
+    return RankingContains(shown, e, fold);
+  };
+
+  ranked.erase(
+      std::remove_if(ranked.begin(), ranked.end(), in_shown_above_fold),
+      ranked.end());
+  return ranked.empty() ? "" : ranked.front();
+}
+
+void SwapRankingElement(std::vector<std::string>& ranking,
+                        const std::string& from,
+                        const std::string& to) {
+  DCHECK(RankingContains(ranking, from));
+  DCHECK(RankingContains(ranking, to));
+
+  auto from_loc = std::find(ranking.begin(), ranking.end(), from);
+  auto to_loc = std::find(ranking.begin(), ranking.end(), to);
+  *from_loc = to;
+  *to_loc = from;
+}
+
+std::vector<std::string> ReplaceUnavailableEntries(
+    const std::vector<std::string>& ranking,
+    const std::vector<std::string>& available) {
+  std::vector<std::string> result;
+  std::transform(ranking.begin(), ranking.end(), std::back_inserter(result),
+                 [&](const std::string& e) {
+                   return RankingContains(available, e) ? e : "";
+                 });
+  return result;
+}
+
+void FillGaps(std::vector<std::string>& ranking,
+              const std::vector<std::string>& available,
+              unsigned int fold) {
+  std::vector<std::string> unused_available = available;
+
+  unused_available.erase(
+      std::remove_if(unused_available.begin(), unused_available.end(),
+                     [&](const std::string& e) {
+                       return RankingContains(ranking, e, fold);
+                     }),
+      unused_available.end());
+  auto next_unused = unused_available.begin();
+
+  DCHECK_GE(ranking.size(), fold);
+
+  for (unsigned int i = 0; i < fold; ++i) {
+    if (ranking[i] == "" && *next_unused != "")
+      ranking[i] = *(next_unused++);
+  }
+}
+
+std::vector<std::string> MaybeUpdateRankingFromHistory(
+    const std::vector<std::string>& old_ranking,
+    const std::map<std::string, int>& recent_share_history,
+    const std::map<std::string, int>& all_share_history,
+    unsigned int fold) {
+  const double RECENCY_WEIGHT = 2.0;
+  const double DAMPENING = 1.1;
+
+  const std::string lowest_shown = old_ranking[fold - 1];
+  const std::string highest_unshown_recent =
+      HighestUnshown(old_ranking, recent_share_history, fold);
+  const std::string highest_unshown_all =
+      HighestUnshown(old_ranking, all_share_history, fold);
+
+  std::vector<std::string> new_ranking = old_ranking;
+
+  if (highest_unshown_recent != "" &&
+      recent_share_history.at(highest_unshown_recent) * RECENCY_WEIGHT >
+          recent_share_history.at(lowest_shown) * DAMPENING) {
+    SwapRankingElement(new_ranking, lowest_shown, highest_unshown_recent);
+  } else if (highest_unshown_all != "" &&
+             all_share_history.at(highest_unshown_all) >
+                 all_share_history.at(lowest_shown) * DAMPENING) {
+    SwapRankingElement(new_ranking, lowest_shown, highest_unshown_all);
+  }
+
+  DCHECK_EQ(old_ranking.size(), new_ranking.size());
+  return new_ranking;
+}
+
+#if DCHECK_IS_ON()
+bool EveryElementInList(const std::vector<std::string>& ranking,
+                        const std::vector<std::string>& available) {
+  for (const auto& e : ranking) {
+    if (!RankingContains(available, e))
+      return false;
+  }
+  return true;
+}
+
+bool ElementIndexesAreUnchanged(const std::vector<std::string>& display,
+                                const std::vector<std::string>& old,
+                                unsigned int fold) {
+  for (unsigned int i = 0; i < display.size() && i < fold; ++i) {
+    if (RankingContains(old, display[i], fold) && display[i] != old[i])
+      return false;
+  }
+  return true;
+}
+
+bool AtMostOneSlotChanged(const std::vector<std::string>& old_ranking,
+                          const std::vector<std::string>& new_ranking,
+                          unsigned int fold) {
+  bool change_seen = false;
+  for (unsigned int i = 0; i < old_ranking.size() && i < fold; ++i) {
+    if (old_ranking[i] != new_ranking[i]) {
+      if (change_seen)
+        return false;
+      else
+        change_seen = true;
+    }
+  }
+  return true;
+}
+
+bool NoEmptySlots(const std::vector<std::string>& display_ranking,
+                  unsigned int fold) {
+  if (display_ranking.size() < fold)
+    return false;
+  for (unsigned int i = 0; i < fold; i++) {
+    if (display_ranking[i] == "")
+      return false;
+  }
+  return true;
+}
+#endif  // DCHECK_IS_ON()
+
 }  // namespace
 
 ShareRanking::ShareRanking(Profile* profile,
@@ -80,7 +239,7 @@
 void ShareRanking::Rank(ShareHistory* history,
                         const std::string& type,
                         const std::vector<std::string>& available_on_system,
-                        int fold,
+                        unsigned int fold,
                         bool persist_update,
                         GetRankingCallback callback) {
   NOTIMPLEMENTED();
@@ -92,10 +251,42 @@
     const std::map<std::string, int>& recent_share_history,
     const Ranking& old_ranking,
     const std::vector<std::string>& available_on_system,
-    int fold,
+    unsigned int fold,
+    bool fix_more,
     Ranking* display_ranking,
     Ranking* persisted_ranking) {
-  NOTIMPLEMENTED();
+  // Preconditions:
+  DCHECK_GE(old_ranking.size(), fold);
+  DCHECK_GE(available_on_system.size(), fold);
+
+  std::vector<std::string> new_ranking = MaybeUpdateRankingFromHistory(
+      old_ranking, all_share_history, recent_share_history, fold);
+
+  Ranking computed_display_ranking =
+      ReplaceUnavailableEntries(new_ranking, available_on_system);
+
+  FillGaps(computed_display_ranking, available_on_system, fold);
+
+  computed_display_ranking.resize(fold);
+
+  if (fix_more)
+    computed_display_ranking[fold - 1] = kMoreTarget;
+
+  *persisted_ranking = new_ranking;
+  *display_ranking = computed_display_ranking;
+
+  // Postconditions:
+#if DCHECK_IS_ON()
+  {
+    std::vector<std::string> available = available_on_system;
+    available.push_back(kMoreTarget);
+
+    DCHECK(EveryElementInList(*display_ranking, available));
+    DCHECK(ElementIndexesAreUnchanged(*display_ranking, old_ranking, fold));
+    DCHECK(AtMostOneSlotChanged(old_ranking, *persisted_ranking, fold));
+    DCHECK(NoEmptySlots(*display_ranking, fold));
+  }
+#endif  // DCHECK_IS_ON()
 }
 
 void ShareRanking::Init() {
diff --git a/chrome/browser/share/share_ranking.h b/chrome/browser/share/share_ranking.h
index f3c4ab0..dfacbdd0 100644
--- a/chrome/browser/share/share_ranking.h
+++ b/chrome/browser/share/share_ranking.h
@@ -43,7 +43,7 @@
   void Rank(ShareHistory* history,
             const std::string& type,
             const std::vector<std::string>& available_on_system,
-            int fold,
+            unsigned int fold,
             bool persist_update,
             GetRankingCallback callback);
 
@@ -52,15 +52,20 @@
   // share history and ranking for this type, a set of all targets available on
   // the current system, and a fold, and computes the new display ranking and
   // the new persistent ranking.
+  //
+  // TODO(ellyjones): Document (publicly) how this works and why.
   static void ComputeRanking(
       const std::map<std::string, int>& all_share_history,
       const std::map<std::string, int>& recent_share_history,
       const Ranking& old_ranking,
       const std::vector<std::string>& available_on_system,
-      int fold,
+      unsigned int fold,
+      bool fix_more,
       Ranking* display_ranking,
       Ranking* persisted_ranking);
 
+  static const char* const kMoreTarget;
+
  private:
   void Init();
   void OnInitDone(leveldb_proto::Enums::InitStatus status);
diff --git a/chrome/browser/share/share_ranking_unittest.cc b/chrome/browser/share/share_ranking_unittest.cc
index 2df9f774..1cc9df9 100644
--- a/chrome/browser/share/share_ranking_unittest.cc
+++ b/chrome/browser/share/share_ranking_unittest.cc
@@ -41,23 +41,10 @@
   leveldb_proto::test::FakeDB<proto::ShareRanking>* backing_db_ = nullptr;
 };
 
-TEST_F(ShareRankingTest, DISABLED_EmptyOldRankingReflectsHistory) {
-  std::map<std::string, int> history = {
-      {"bar", 2},
-      {"foo", 3},
-      {"baz", 1},
-  };
-
-  ShareRanking::Ranking displayed, persisted;
-  ShareRanking::ComputeRanking(history, history, {}, {"foo", "bar", "baz"}, 3,
-                               &displayed, &persisted);
-
-  ShareRanking::Ranking expected{"foo", "bar", "baz"};
-  EXPECT_EQ(displayed, expected);
-  EXPECT_EQ(persisted, expected);
-}
-
-TEST_F(ShareRankingTest, DISABLED_CountsMatchOldRanking) {
+// The "easy case": the existing usage counts are the same as the current
+// ranking, and every app in the ranking is available, so the new ranking and
+// the displayed ranking should both be the same as the current ranking.
+TEST_F(ShareRankingTest, CountsMatchOldRanking) {
   std::map<std::string, int> history = {
       {"bar", 2},
       {"foo", 3},
@@ -68,12 +55,17 @@
   ShareRanking::Ranking current{"foo", "bar", "baz"};
 
   ShareRanking::ComputeRanking(history, history, current, {"foo", "bar", "baz"},
-                               3, &displayed, &persisted);
+                               3, false, &displayed, &persisted);
+  ASSERT_EQ(displayed.size(), current.size());
+  ASSERT_EQ(persisted.size(), current.size());
   EXPECT_EQ(displayed, current);
   EXPECT_EQ(persisted, current);
 }
 
-TEST_F(ShareRankingTest, DISABLED_UnavailableAppDoesNotShow) {
+// If the existing ranking includes an above-the-fold app that doesn't exist on
+// the system, that app should be replaced by the next available below-the-fold
+// app that does.
+TEST_F(ShareRankingTest, UnavailableAppDoesNotShow) {
   std::map<std::string, int> history = {
       {"foo", 5}, {"bar", 4}, {"baz", 3}, {"quxx", 2}, {"blit", 1},
   };
@@ -81,17 +73,79 @@
   ShareRanking::Ranking displayed, persisted;
   ShareRanking::Ranking current{"foo", "bar", "baz", "quxx", "blit"};
 
-  ShareRanking::ComputeRanking(history, history, current,
-                               {"foo", "quxx", "baz", "blit"}, 4, &displayed,
-                               &persisted);
+  ShareRanking::ComputeRanking(history, {}, current,
+                               {"foo", "quxx", "baz", "blit"}, 4, false,
+                               &displayed, &persisted);
   ShareRanking::Ranking expected_displayed{
       "foo",
+      "blit",
       "baz",
       "quxx",
-      "bliz",
   };
   EXPECT_EQ(displayed, expected_displayed);
   EXPECT_EQ(persisted, current);
 }
 
+TEST_F(ShareRankingTest, HighAllUsageAppReplacesLowest) {
+  std::map<std::string, int> history = {
+      {"foo", 5}, {"bar", 4}, {"baz", 3}, {"quxx", 2}, {"blit", 10}};
+
+  ShareRanking::Ranking displayed, persisted;
+  ShareRanking::Ranking current{"foo", "bar", "baz", "quxx", "blit"};
+  ShareRanking::ComputeRanking(history, {}, current,
+                               {"foo", "bar", "quxx", "baz", "blit"}, 4, false,
+                               &displayed, &persisted);
+  ShareRanking::Ranking expected_displayed{
+      "foo",
+      "bar",
+      "baz",
+      "blit",
+  };
+  ShareRanking::Ranking expected_persisted{"foo", "bar", "baz", "blit", "quxx"};
+  EXPECT_EQ(displayed, expected_displayed);
+  EXPECT_EQ(persisted, expected_persisted);
+}
+
+TEST_F(ShareRankingTest, HighRecentUsageAppReplacesLowest) {
+  std::map<std::string, int> history = {
+      {"foo", 5}, {"bar", 4}, {"baz", 3}, {"quxx", 2}, {"blit", 6}};
+
+  ShareRanking::Ranking displayed, persisted;
+  ShareRanking::Ranking current{"foo", "bar", "baz", "quxx", "blit"};
+  ShareRanking::ComputeRanking({}, history, current,
+                               {"foo", "bar", "quxx", "baz", "blit"}, 4, false,
+                               &displayed, &persisted);
+  ShareRanking::Ranking expected_displayed{
+      "foo",
+      "bar",
+      "baz",
+      "blit",
+  };
+  ShareRanking::Ranking expected_persisted{"foo", "bar", "baz", "blit", "quxx"};
+  EXPECT_EQ(displayed, expected_displayed);
+  EXPECT_EQ(persisted, expected_persisted);
+}
+
+TEST_F(ShareRankingTest, MoreTargetReplacesLast) {
+  std::map<std::string, int> history = {
+      {"bar", 2},
+      {"foo", 3},
+      {"baz", 1},
+  };
+
+  ShareRanking::Ranking displayed, persisted;
+  ShareRanking::Ranking current{"foo", "bar", "baz"};
+
+  ShareRanking::ComputeRanking(history, history, current, {"foo", "bar", "baz"},
+                               3, true, &displayed, &persisted);
+
+  std::vector<std::string> expected_displayed{"foo", "bar",
+                                              ShareRanking::kMoreTarget};
+
+  ASSERT_EQ(displayed.size(), expected_displayed.size());
+  ASSERT_EQ(persisted.size(), current.size());
+  EXPECT_EQ(displayed, expected_displayed);
+  EXPECT_EQ(persisted, current);
+}
+
 }  // namespace sharing
diff --git a/chrome/browser/signin/e2e_tests/live_sign_in_test.cc b/chrome/browser/signin/e2e_tests/live_sign_in_test.cc
index 9bb9608..94dc79d 100644
--- a/chrome/browser/signin/e2e_tests/live_sign_in_test.cc
+++ b/chrome/browser/signin/e2e_tests/live_sign_in_test.cc
@@ -330,8 +330,8 @@
       identity_manager()->HasAccountWithRefreshTokenInPersistentErrorState(
           primary_account.account_id));
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
-  EXPECT_EQ(sync_ui_util::GetAvatarSyncErrorType(browser()->profile()),
-            sync_ui_util::AUTH_ERROR);
+  EXPECT_EQ(GetAvatarSyncErrorType(browser()->profile()),
+            AvatarSyncErrorType::kAuthError);
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 }
 
diff --git a/chrome/browser/ssl/sct_reporting_service_browsertest.cc b/chrome/browser/ssl/sct_reporting_service_browsertest.cc
index 247a789..0f898dea 100644
--- a/chrome/browser/ssl/sct_reporting_service_browsertest.cc
+++ b/chrome/browser/ssl/sct_reporting_service_browsertest.cc
@@ -48,18 +48,18 @@
 // log and one from a non-Google log.
 //
 // Google's "Argon2023" log ("6D7Q2j71BjUy51covIlryQPTy9ERa+zraeF3fW0GvW4="):
-const char kTestGoogleLogId[] = {
+const uint8_t kTestGoogleLogId[] = {
     0xe8, 0x3e, 0xd0, 0xda, 0x3e, 0xf5, 0x06, 0x35, 0x32, 0xe7, 0x57,
     0x28, 0xbc, 0x89, 0x6b, 0xc9, 0x03, 0xd3, 0xcb, 0xd1, 0x11, 0x6b,
     0xec, 0xeb, 0x69, 0xe1, 0x77, 0x7d, 0x6d, 0x06, 0xbd, 0x6e};
 // Cloudflare's "Nimbus2023" log
 // ("ejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6V6NS61I="):
-const char kTestNonGoogleLogId1[] = {
+const uint8_t kTestNonGoogleLogId1[] = {
     0x7a, 0x32, 0x8c, 0x54, 0xd8, 0xb7, 0x2d, 0xb6, 0x20, 0xea, 0x38,
     0xe0, 0x52, 0x1e, 0xe9, 0x84, 0x16, 0x70, 0x32, 0x13, 0x85, 0x4d,
     0x3b, 0xd2, 0x2b, 0xc1, 0x3a, 0x57, 0xa3, 0x52, 0xeb, 0x52};
 // DigiCert's "Yeti2023" log ("Nc8ZG7+xbFe/D61MbULLu7YnICZR6j/hKu+oA8M71kw="):
-const char kTestNonGoogleLogId2[] = {
+const uint8_t kTestNonGoogleLogId2[] = {
     0x35, 0xcf, 0x19, 0x1b, 0xbf, 0xb1, 0x6c, 0x57, 0xbf, 0x0f, 0xad,
     0x4c, 0x6d, 0x42, 0xcb, 0xbb, 0xb6, 0x27, 0x20, 0x26, 0x51, 0xea,
     0x3f, 0xe1, 0x2a, 0xef, 0xa8, 0x03, 0xc3, 0x3b, 0xd6, 0x4c};
@@ -135,17 +135,20 @@
     MakeTestSCTAndStatus(
         net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions1",
         "signature1", base::Time::Now(),
-        std::string(kTestGoogleLogId, base::size(kTestGoogleLogId)),
+        std::string(reinterpret_cast<const char*>(kTestGoogleLogId),
+                    base::size(kTestGoogleLogId)),
         net::ct::SCT_STATUS_OK, &verify_result.scts);
     MakeTestSCTAndStatus(
         net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions2",
         "signature2", base::Time::Now(),
-        std::string(kTestNonGoogleLogId1, base::size(kTestNonGoogleLogId1)),
+        std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                    base::size(kTestNonGoogleLogId1)),
         net::ct::SCT_STATUS_OK, &verify_result.scts);
     MakeTestSCTAndStatus(
         net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions3",
         "signature3", base::Time::Now(),
-        std::string(kTestNonGoogleLogId2, base::size(kTestNonGoogleLogId2)),
+        std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId2),
+                    base::size(kTestNonGoogleLogId2)),
         net::ct::SCT_STATUS_OK, &verify_result.scts);
 
     // Set up two test hosts as using publicly-issued certificates for testing.
@@ -398,17 +401,20 @@
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions1",
       "signature1", base::Time::Now(),
-      std::string(kTestGoogleLogId, base::size(kTestGoogleLogId)),
+      std::string(reinterpret_cast<const char*>(kTestGoogleLogId),
+                  base::size(kTestGoogleLogId)),
       net::ct::SCT_STATUS_OK, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions2",
       "signature2", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, base::size(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  base::size(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_OK, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions3",
       "signature3", base::Time::Now(),
-      std::string(kTestNonGoogleLogId2, base::size(kTestNonGoogleLogId2)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId2),
+                  base::size(kTestNonGoogleLogId2)),
       net::ct::SCT_STATUS_OK, &verify_result.scts);
   mock_cert_verifier()->AddResultForCertAndHost(
       https_server()->GetCertificate().get(), "a.test", verify_result, net::OK);
@@ -435,24 +441,29 @@
   verify_result.is_issued_by_known_root = true;
   // Add three valid SCTs and one invalid SCT. The three valid SCTs meet the
   // Chrome CT policy.
-  MakeTestSCTAndStatus(net::ct::SignedCertificateTimestamp::SCT_EMBEDDED,
-                       "extensions1", "signature1", base::Time::Now(),
-                       std::string(kTestGoogleLogId, sizeof(kTestGoogleLogId)),
-                       net::ct::SCT_STATUS_OK, &verify_result.scts);
+  MakeTestSCTAndStatus(
+      net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions1",
+      "signature1", base::Time::Now(),
+      std::string(reinterpret_cast<const char*>(kTestGoogleLogId),
+                  sizeof(kTestGoogleLogId)),
+      net::ct::SCT_STATUS_OK, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions2",
       "signature2", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, sizeof(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  sizeof(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_OK, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions3",
       "signature3", base::Time::Now(),
-      std::string(kTestNonGoogleLogId2, sizeof(kTestNonGoogleLogId2)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId2),
+                  sizeof(kTestNonGoogleLogId2)),
       net::ct::SCT_STATUS_OK, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions4",
       "signature4", base::Time::Now(),
-      std::string(kTestNonGoogleLogId2, sizeof(kTestNonGoogleLogId2)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId2),
+                  sizeof(kTestNonGoogleLogId2)),
       net::ct::SCT_STATUS_INVALID_SIGNATURE, &verify_result.scts);
 
   mock_cert_verifier()->AddResultForCertAndHost(
@@ -482,17 +493,20 @@
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions1",
       "signature1", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, sizeof(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  sizeof(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_OK, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions2",
       "signature2", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, sizeof(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  sizeof(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_INVALID_SIGNATURE, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions3",
       "signature3", base::Time::Now(),
-      std::string(kTestNonGoogleLogId2, sizeof(kTestNonGoogleLogId2)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId2),
+                  sizeof(kTestNonGoogleLogId2)),
       net::ct::SCT_STATUS_INVALID_SIGNATURE, &verify_result.scts);
 
   mock_cert_verifier()->AddResultForCertAndHost(
@@ -517,17 +531,20 @@
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions1",
       "signature1", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, sizeof(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  sizeof(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_INVALID_TIMESTAMP, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions2",
       "signature2", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, sizeof(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  sizeof(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_INVALID_SIGNATURE, &verify_result.scts);
   MakeTestSCTAndStatus(
       net::ct::SignedCertificateTimestamp::SCT_EMBEDDED, "extensions3",
       "signature3", base::Time::Now(),
-      std::string(kTestNonGoogleLogId1, sizeof(kTestNonGoogleLogId1)),
+      std::string(reinterpret_cast<const char*>(kTestNonGoogleLogId1),
+                  sizeof(kTestNonGoogleLogId1)),
       net::ct::SCT_STATUS_INVALID_SIGNATURE, &verify_result.scts);
 
   mock_cert_verifier()->AddResultForCertAndHost(
diff --git a/chrome/browser/sync/sync_error_notifier_ash.cc b/chrome/browser/sync/sync_error_notifier_ash.cc
index cda3e73b..26a8e1df 100644
--- a/chrome/browser/sync/sync_error_notifier_ash.cc
+++ b/chrome/browser/sync/sync_error_notifier_ash.cc
@@ -56,14 +56,14 @@
 
 void TriggerSyncKeyRetrieval(Profile* profile) {
   chrome::ScopedTabbedBrowserDisplayer displayer(profile);
-  sync_ui_util::OpenTabForSyncKeyRetrieval(
-      displayer.browser(), syncer::KeyRetrievalTriggerForUMA::kNotification);
+  OpenTabForSyncKeyRetrieval(displayer.browser(),
+                             syncer::KeyRetrievalTriggerForUMA::kNotification);
 }
 
 BubbleViewParameters GetBubbleViewParameters(
     Profile* profile,
     syncer::SyncService* sync_service) {
-  if (sync_ui_util::ShouldShowPassphraseError(sync_service)) {
+  if (ShouldShowSyncPassphraseError(sync_service)) {
     BubbleViewParameters params;
     params.message_id = IDS_SYNC_PASSPHRASE_ERROR_BUBBLE_VIEW_MESSAGE;
     // |profile| is guaranteed to outlive the callback because the ownership of
@@ -74,8 +74,7 @@
     return params;
   }
 
-  DCHECK(sync_ui_util::ShouldShowSyncKeysMissingError(sync_service,
-                                                      profile->GetPrefs()));
+  DCHECK(ShouldShowSyncKeysMissingError(sync_service, profile->GetPrefs()));
 
   BubbleViewParameters params;
   params.message_id =
@@ -114,9 +113,8 @@
   DCHECK_EQ(service, sync_service_);
 
   const bool should_display_notification =
-      sync_ui_util::ShouldShowPassphraseError(sync_service_) ||
-      sync_ui_util::ShouldShowSyncKeysMissingError(service,
-                                                   profile_->GetPrefs());
+      ShouldShowSyncPassphraseError(sync_service_) ||
+      ShouldShowSyncKeysMissingError(service, profile_->GetPrefs());
 
   if (should_display_notification == notification_displayed_) {
     return;
diff --git a/chrome/browser/sync/sync_ui_util.cc b/chrome/browser/sync/sync_ui_util.cc
index 38783e5..fe223d9e 100644
--- a/chrome/browser/sync/sync_ui_util.cc
+++ b/chrome/browser/sync/sync_ui_util.cc
@@ -34,11 +34,9 @@
 #include "ash/constants/ash_features.h"
 #endif
 
-namespace sync_ui_util {
-
 namespace {
 
-StatusLabels GetStatusForUnrecoverableError(bool is_user_signout_allowed) {
+SyncStatusLabels GetStatusForUnrecoverableError(bool is_user_signout_allowed) {
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
   int status_label_string_id =
       is_user_signout_allowed
@@ -51,45 +49,47 @@
       IDS_SYNC_STATUS_UNRECOVERABLE_ERROR_NEEDS_SIGNOUT;
 #endif
 
-  return {SYNC_ERROR, status_label_string_id, IDS_SYNC_RELOGIN_BUTTON,
-          REAUTHENTICATE};
+  return {SyncStatusMessageType::kSyncError, status_label_string_id,
+          IDS_SYNC_RELOGIN_BUTTON, SyncStatusActionType::kReauthenticate};
 }
 
 // Depending on the authentication state, returns labels to be used to display
 // information about the sync status.
-StatusLabels GetStatusForAuthError(const GoogleServiceAuthError& auth_error) {
+SyncStatusLabels GetStatusForAuthError(
+    const GoogleServiceAuthError& auth_error) {
   switch (auth_error.state()) {
     case GoogleServiceAuthError::NONE:
       NOTREACHED();
       break;
     case GoogleServiceAuthError::SERVICE_UNAVAILABLE:
-      return {SYNC_ERROR, IDS_SYNC_SERVICE_UNAVAILABLE,
-              IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_SERVICE_UNAVAILABLE,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     case GoogleServiceAuthError::CONNECTION_FAILED:
       // Note that there is little the user can do if the server is not
       // reachable. Since attempting to re-connect is done automatically by
       // the Syncer, we do not show the (re)login link.
-      return {SYNC_ERROR, IDS_SYNC_SERVER_IS_UNREACHABLE,
-              IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_SERVER_IS_UNREACHABLE,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     case GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS:
     case GoogleServiceAuthError::SERVICE_ERROR:
     default:
-      return {SYNC_ERROR, IDS_SYNC_RELOGIN_ERROR, IDS_SYNC_RELOGIN_BUTTON,
-              REAUTHENTICATE};
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_RELOGIN_ERROR,
+              IDS_SYNC_RELOGIN_BUTTON, SyncStatusActionType::kReauthenticate};
   }
 
   NOTREACHED();
-  return StatusLabels();
+  return SyncStatusLabels();
 }
 
-StatusLabels GetStatusLabelsImpl(const syncer::SyncService* service,
-                                 bool is_user_signout_allowed,
-                                 const GoogleServiceAuthError& auth_error) {
+SyncStatusLabels GetSyncStatusLabelsImpl(
+    const syncer::SyncService* service,
+    bool is_user_signout_allowed,
+    const GoogleServiceAuthError& auth_error) {
   DCHECK(service);
 
   if (!service->IsAuthenticatedAccountPrimary()) {
-    return {PRE_SYNCED, IDS_SETTINGS_EMPTY_STRING, IDS_SETTINGS_EMPTY_STRING,
-            NO_ACTION};
+    return {SyncStatusMessageType::kPreSynced, IDS_SETTINGS_EMPTY_STRING,
+            IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
   }
 
   // If local Sync were enabled, then the SyncService shouldn't report having a
@@ -98,8 +98,9 @@
 
   // First check if Chrome needs to be updated.
   if (service->RequiresClientUpgrade()) {
-    return {SYNC_ERROR, IDS_SYNC_UPGRADE_CLIENT, IDS_SYNC_UPGRADE_CLIENT_BUTTON,
-            UPGRADE_CLIENT};
+    return {SyncStatusMessageType::kSyncError, IDS_SYNC_UPGRADE_CLIENT,
+            IDS_SYNC_UPGRADE_CLIENT_BUTTON,
+            SyncStatusActionType::kUpgradeClient};
   }
 
   // Then check for an unrecoverable error.
@@ -115,64 +116,69 @@
   // Check if Sync is disabled by policy.
   if (service->HasDisableReason(
           syncer::SyncService::DISABLE_REASON_ENTERPRISE_POLICY)) {
-    // TODO(crbug.com/911153): Is SYNCED correct for this case?
-    return {SYNCED, IDS_SIGNED_IN_WITH_SYNC_DISABLED_BY_POLICY,
-            IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+    // TODO(crbug.com/911153): Is SyncStatusMessageType::kSynced correct for
+    // this case?
+    return {SyncStatusMessageType::kSynced,
+            IDS_SIGNED_IN_WITH_SYNC_DISABLED_BY_POLICY,
+            IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
   }
 
   // Check to see if sync has been disabled via the dashboard and needs to be
   // set up once again.
   if (!service->GetUserSettings()->IsSyncRequested()) {
-    return {SYNC_ERROR, IDS_SIGNED_IN_WITH_SYNC_STOPPED_VIA_DASHBOARD,
-            IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+    return {SyncStatusMessageType::kSyncError,
+            IDS_SIGNED_IN_WITH_SYNC_STOPPED_VIA_DASHBOARD,
+            IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
   }
 
   if (service->GetUserSettings()->IsFirstSetupComplete()) {
     // Check for a passphrase error.
     if (service->GetUserSettings()
             ->IsPassphraseRequiredForPreferredDataTypes()) {
-      // TODO(mastiz): This should return PASSWORDS_ONLY_SYNC_ERROR if only
-      // passwords are encrypted as per IsEncryptEverythingEnabled().
-      return {SYNC_ERROR, IDS_SYNC_STATUS_NEEDS_PASSWORD,
-              IDS_SYNC_STATUS_NEEDS_PASSWORD_BUTTON, ENTER_PASSPHRASE};
+      // TODO(mastiz): This should return
+      // SyncStatusMessageType::kPasswordsOnlySyncError if only passwords are
+      // encrypted as per IsEncryptEverythingEnabled().
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_STATUS_NEEDS_PASSWORD,
+              IDS_SYNC_STATUS_NEEDS_PASSWORD_BUTTON,
+              SyncStatusActionType::kEnterPassphrase};
     }
 
     if (service->IsSyncFeatureActive() &&
         service->GetUserSettings()
             ->IsTrustedVaultKeyRequiredForPreferredDataTypes()) {
       return {service->GetUserSettings()->IsEncryptEverythingEnabled()
-                  ? SYNC_ERROR
-                  : PASSWORDS_ONLY_SYNC_ERROR,
+                  ? SyncStatusMessageType::kSyncError
+                  : SyncStatusMessageType::kPasswordsOnlySyncError,
               IDS_SETTINGS_EMPTY_STRING, IDS_SYNC_STATUS_NEEDS_KEYS_BUTTON,
-              RETRIEVE_TRUSTED_VAULT_KEYS};
+              SyncStatusActionType::kRetrieveTrustedVaultKeys};
     }
 
     // At this point, there is no Sync error.
     if (service->IsSyncFeatureActive()) {
-      return {SYNCED,
+      return {SyncStatusMessageType::kSynced,
               service->GetUserSettings()->IsSyncEverythingEnabled()
                   ? IDS_SYNC_ACCOUNT_SYNCING
                   : IDS_SYNC_ACCOUNT_SYNCING_CUSTOM_DATA_TYPES,
-              IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     } else {
       // Sync is still initializing.
-      return {SYNCED, IDS_SETTINGS_EMPTY_STRING, IDS_SETTINGS_EMPTY_STRING,
-              NO_ACTION};
+      return {SyncStatusMessageType::kSynced, IDS_SETTINGS_EMPTY_STRING,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     }
   }
 
   // If first setup is in progress, show an "in progress" message.
   if (service->IsSetupInProgress()) {
-    return {PRE_SYNCED, IDS_SYNC_SETUP_IN_PROGRESS, IDS_SETTINGS_EMPTY_STRING,
-            NO_ACTION};
+    return {SyncStatusMessageType::kPreSynced, IDS_SYNC_SETUP_IN_PROGRESS,
+            IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
   }
 
   // At this point we've ruled out all other cases - all that's left is a
   // missing Sync confirmation.
   DCHECK(ShouldRequestSyncConfirmation(service));
-  return {SYNC_ERROR, IDS_SYNC_SETTINGS_NOT_CONFIRMED,
+  return {SyncStatusMessageType::kSyncError, IDS_SYNC_SETTINGS_NOT_CONFIRMED,
           IDS_SYNC_ERROR_USER_MENU_CONFIRM_SYNC_SETTINGS_BUTTON,
-          CONFIRM_SYNC_SETTINGS};
+          SyncStatusActionType::kConfirmSyncSettings};
 }
 
 void FocusWebContents(Browser* browser) {
@@ -210,15 +216,17 @@
     const PrefService* pref_service) {
   if (ShouldShowSyncKeysMissingError(sync_service, pref_service)) {
     return sync_service->GetUserSettings()->IsEncryptEverythingEnabled()
-               ? TRUSTED_VAULT_KEY_MISSING_FOR_EVERYTHING_ERROR
-               : TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR;
+               ? AvatarSyncErrorType::kTrustedVaultKeyMissingForEverythingError
+               : AvatarSyncErrorType::kTrustedVaultKeyMissingForPasswordsError;
   }
 
   if (ShouldShowTrustedVaultDegradedRecoverabilityError(sync_service,
                                                         pref_service)) {
     return sync_service->GetUserSettings()->IsEncryptEverythingEnabled()
-               ? TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_EVERYTHING_ERROR
-               : TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR;
+               ? AvatarSyncErrorType::
+                     kTrustedVaultRecoverabilityDegradedForEverythingError
+               : AvatarSyncErrorType::
+                     kTrustedVaultRecoverabilityDegradedForPasswordsError;
   }
 
   return absl::nullopt;
@@ -226,31 +234,33 @@
 
 }  // namespace
 
-StatusLabels GetStatusLabels(syncer::SyncService* sync_service,
-                             signin::IdentityManager* identity_manager,
-                             bool is_user_signout_allowed) {
+SyncStatusLabels GetSyncStatusLabels(syncer::SyncService* sync_service,
+                                     signin::IdentityManager* identity_manager,
+                                     bool is_user_signout_allowed) {
   if (!sync_service) {
     // This can happen if Sync is disabled via the command line.
-    return {PRE_SYNCED, IDS_SETTINGS_EMPTY_STRING, IDS_SETTINGS_EMPTY_STRING,
-            NO_ACTION};
+    return {SyncStatusMessageType::kPreSynced, IDS_SETTINGS_EMPTY_STRING,
+            IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
   }
   DCHECK(identity_manager);
   CoreAccountInfo account_info = sync_service->GetAuthenticatedAccountInfo();
   GoogleServiceAuthError auth_error =
       identity_manager->GetErrorStateOfRefreshTokenForAccount(
           account_info.account_id);
-  return GetStatusLabelsImpl(sync_service, is_user_signout_allowed, auth_error);
+  return GetSyncStatusLabelsImpl(sync_service, is_user_signout_allowed,
+                                 auth_error);
 }
 
-StatusLabels GetStatusLabels(Profile* profile) {
+SyncStatusLabels GetSyncStatusLabels(Profile* profile) {
   DCHECK(profile);
-  return GetStatusLabels(SyncServiceFactory::GetForProfile(profile),
-                         IdentityManagerFactory::GetForProfile(profile),
-                         signin_util::IsUserSignoutAllowedForProfile(profile));
+  return GetSyncStatusLabels(
+      SyncServiceFactory::GetForProfile(profile),
+      IdentityManagerFactory::GetForProfile(profile),
+      signin_util::IsUserSignoutAllowedForProfile(profile));
 }
 
-MessageType GetStatus(Profile* profile) {
-  return GetStatusLabels(profile).message_type;
+SyncStatusMessageType GetSyncStatusMessageType(Profile* profile) {
+  return GetSyncStatusLabels(profile).message_type;
 }
 
 absl::optional<AvatarSyncErrorType> GetAvatarSyncErrorType(Profile* profile) {
@@ -278,23 +288,23 @@
   if (service->HasUnrecoverableError() && !service->RequiresClientUpgrade()) {
     // Display different messages and buttons for managed accounts.
     if (!signin_util::IsUserSignoutAllowedForProfile(profile)) {
-      return MANAGED_USER_UNRECOVERABLE_ERROR;
+      return AvatarSyncErrorType::kManagedUserUnrecoverableError;
     }
-    return UNRECOVERABLE_ERROR;
+    return AvatarSyncErrorType::kUnrecoverableError;
   }
 
   // TODO(crbug.com/1156584): This should simply check SyncService::
   // GetTransportState() is PAUSED. This needs enlarging the PAUSED state first.
   if (service->GetAuthError().IsPersistentError()) {
-    return AUTH_ERROR;
+    return AvatarSyncErrorType::kAuthError;
   }
 
   if (service->RequiresClientUpgrade()) {
-    return UPGRADE_CLIENT_ERROR;
+    return AvatarSyncErrorType::kUpgradeClientError;
   }
 
-  if (ShouldShowPassphraseError(service)) {
-    return PASSPHRASE_ERROR;
+  if (ShouldShowSyncPassphraseError(service)) {
+    return AvatarSyncErrorType::kPassphraseError;
   }
 
   const absl::optional<AvatarSyncErrorType> trusted_vault_error =
@@ -304,37 +314,36 @@
   }
 
   if (ShouldRequestSyncConfirmation(service)) {
-    return SETTINGS_UNCONFIRMED_ERROR;
+    return AvatarSyncErrorType::kSettingsUnconfirmedError;
   }
 
   return absl::nullopt;
 }
 
-std::u16string GetAvatarSyncErrorDescription(
-    sync_ui_util::AvatarSyncErrorType error,
-    bool is_sync_feature_enabled) {
+std::u16string GetAvatarSyncErrorDescription(AvatarSyncErrorType error,
+                                             bool is_sync_feature_enabled) {
   switch (error) {
-    case sync_ui_util::AUTH_ERROR:
+    case AvatarSyncErrorType::kAuthError:
       return l10n_util::GetStringUTF16(IDS_PROFILES_DICE_SYNC_PAUSED_TITLE);
-    case sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR:
+    case AvatarSyncErrorType::kTrustedVaultKeyMissingForPasswordsError:
       return l10n_util::GetStringUTF16(
           is_sync_feature_enabled
               ? IDS_SYNC_ERROR_PASSWORDS_USER_MENU_TITLE
               : IDS_SYNC_ERROR_PASSWORDS_USER_MENU_TITLE_SIGNED_IN_ONLY);
-    case sync_ui_util::
-        TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR:
+    case AvatarSyncErrorType::
+        kTrustedVaultRecoverabilityDegradedForPasswordsError:
       return l10n_util::GetStringUTF16(
           IDS_SYNC_ERROR_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_USER_MENU_TITLE);
-    case sync_ui_util::
-        TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_EVERYTHING_ERROR:
+    case AvatarSyncErrorType::
+        kTrustedVaultRecoverabilityDegradedForEverythingError:
       return l10n_util::GetStringUTF16(
           IDS_SYNC_ERROR_RECOVERABILITY_DEGRADED_FOR_EVERYTHING_USER_MENU_TITLE);
-    case sync_ui_util::SETTINGS_UNCONFIRMED_ERROR:
-    case sync_ui_util::MANAGED_USER_UNRECOVERABLE_ERROR:
-    case sync_ui_util::UNRECOVERABLE_ERROR:
-    case sync_ui_util::UPGRADE_CLIENT_ERROR:
-    case sync_ui_util::PASSPHRASE_ERROR:
-    case sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_EVERYTHING_ERROR:
+    case AvatarSyncErrorType::kSettingsUnconfirmedError:
+    case AvatarSyncErrorType::kManagedUserUnrecoverableError:
+    case AvatarSyncErrorType::kUnrecoverableError:
+    case AvatarSyncErrorType::kUpgradeClientError:
+    case AvatarSyncErrorType::kPassphraseError:
+    case AvatarSyncErrorType::kTrustedVaultKeyMissingForEverythingError:
       return l10n_util::GetStringUTF16(IDS_SYNC_ERROR_USER_MENU_TITLE);
   }
 }
@@ -357,7 +366,7 @@
          !service->GetUserSettings()->IsFirstSetupComplete();
 }
 
-bool ShouldShowPassphraseError(const syncer::SyncService* service) {
+bool ShouldShowSyncPassphraseError(const syncer::SyncService* service) {
   const syncer::SyncUserSettings* settings = service->GetUserSettings();
   return HasUserOptedInToSync(settings) &&
          settings->IsPassphraseRequiredForPreferredDataTypes();
@@ -458,5 +467,3 @@
   }
   OpenTabForSyncTrustedVaultUserAction(browser, url);
 }
-
-}  // namespace sync_ui_util
diff --git a/chrome/browser/sync/sync_ui_util.h b/chrome/browser/sync/sync_ui_util.h
index a40fd368..f0a0ec0 100644
--- a/chrome/browser/sync/sync_ui_util.h
+++ b/chrome/browser/sync/sync_ui_util.h
@@ -24,86 +24,85 @@
 
 // Utility functions to gather current sync status information from the sync
 // service and constructs messages suitable for showing in UI.
-namespace sync_ui_util {
 
-enum MessageType {
+enum class SyncStatusMessageType {
   // User has not set up sync.
-  PRE_SYNCED,
+  kPreSynced,
   // We are synced and authenticated to a gmail account.
-  SYNCED,
+  kSynced,
   // A sync error (such as invalid credentials) has occurred.
-  SYNC_ERROR,
-  // Same as SYNC_ERROR but affecting passwords only.
-  PASSWORDS_ONLY_SYNC_ERROR,
+  kSyncError,
+  // Same as kSyncError but affecting passwords only.
+  kPasswordsOnlySyncError,
 };
 
 // The action associated with the sync status in settings.
-enum ActionType {
+enum class SyncStatusActionType {
   // No action to take.
-  NO_ACTION,
+  kNoAction,
   // User needs to reauthenticate.
-  REAUTHENTICATE,
+  kReauthenticate,
   // User needs to sign out and sign in.
-  SIGNOUT_AND_SIGNIN,
+  kSignoutAndSignin,
   // User needs to upgrade the client.
-  UPGRADE_CLIENT,
+  kUpgradeClient,
   // User needs to enter their passphrase.
-  ENTER_PASSPHRASE,
+  kEnterPassphrase,
   // User needs to go through key retrieval.
-  RETRIEVE_TRUSTED_VAULT_KEYS,
+  kRetrieveTrustedVaultKeys,
   // User needs to confirm sync settings.
-  CONFIRM_SYNC_SETTINGS,
+  kConfirmSyncSettings,
 };
 
 // Sync errors that should be exposed to the user through the avatar button.
 enum AvatarSyncErrorType {
   // Unrecoverable error for managed users.
-  MANAGED_USER_UNRECOVERABLE_ERROR,
+  kManagedUserUnrecoverableError,
   // Unrecoverable error for regular users.
-  UNRECOVERABLE_ERROR,
+  kUnrecoverableError,
   // Authentication error.
   // TODO(crbug.com/1156584): Rename to SYNC_PAUSED. That's how it's treated by
   // the UI, and it should eventually match SyncService::TransportState::PAUSED.
-  AUTH_ERROR,
+  kAuthError,
   // Out-of-date client error.
-  UPGRADE_CLIENT_ERROR,
+  kUpgradeClientError,
   // Sync passphrase error.
-  PASSPHRASE_ERROR,
+  kPassphraseError,
   // Trusted vault keys missing for all sync datatypes (encrypt everything is
   // enabled).
-  TRUSTED_VAULT_KEY_MISSING_FOR_EVERYTHING_ERROR,
+  kTrustedVaultKeyMissingForEverythingError,
   // Trusted vault keys missing for always-encrypted datatypes (passwords).
-  TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR,
+  kTrustedVaultKeyMissingForPasswordsError,
   // User needs to improve recoverability of the trusted vault (encrypt
   // everything is enabled).
-  TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_EVERYTHING_ERROR,
+  kTrustedVaultRecoverabilityDegradedForEverythingError,
   // User needs to improve recoverability of the trusted vault (passwords).
-  TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR,
+  kTrustedVaultRecoverabilityDegradedForPasswordsError,
   // Sync settings dialog not confirmed yet.
-  SETTINGS_UNCONFIRMED_ERROR,
+  kSettingsUnconfirmedError,
 };
 
-struct StatusLabels {
-  MessageType message_type;
+struct SyncStatusLabels {
+  SyncStatusMessageType message_type;
   int status_label_string_id;
   int button_string_id;
-  ActionType action_type;
+  SyncStatusActionType action_type;
 };
 
 // Returns the high-level sync status by querying |sync_service| and
 // |identity_manager|.
-StatusLabels GetStatusLabels(syncer::SyncService* sync_service,
-                             signin::IdentityManager* identity_manager,
-                             bool is_user_signout_allowed);
+SyncStatusLabels GetSyncStatusLabels(syncer::SyncService* sync_service,
+                                     signin::IdentityManager* identity_manager,
+                                     bool is_user_signout_allowed);
 
 // Returns the high-level sync status by querying |profile|. This is a
-// convenience version of GetStatusLabels that use the |sync_service| and
+// convenience version of GetSyncStatusLabels that use the |sync_service| and
 // |identity_manager| associated to |profile| via their respective factories.
-StatusLabels GetStatusLabels(Profile* profile);
+SyncStatusLabels GetSyncStatusLabels(Profile* profile);
 
-// Convenience version of GetStatusLabels for when you're not interested in the
-// actual labels, only in the return value.
-MessageType GetStatus(Profile* profile);
+// Convenience version of GetSyncStatusLabels for when you're only interested in
+// the message type.
+SyncStatusMessageType GetSyncStatusMessageType(Profile* profile);
 
 // Gets the error in the sync machinery (if any) that should be exposed to the
 // user through the titlebar avatar button. If absl::nullopt is returned, this
@@ -116,9 +115,8 @@
 // When |error| is present, this returns the string to be shown both as the
 // tooltip of the avatar button, and in the profile menu body (the menu opened
 // by clicking the avatar button).
-std::u16string GetAvatarSyncErrorDescription(
-    sync_ui_util::AvatarSyncErrorType error,
-    bool is_sync_feature_enabled);
+std::u16string GetAvatarSyncErrorDescription(AvatarSyncErrorType error,
+                                             bool is_sync_feature_enabled);
 
 // Whether sync is currently blocked from starting because the sync
 // confirmation dialog hasn't been shown. Note that once the dialog is
@@ -127,7 +125,7 @@
 
 // Returns whether it makes sense to show a Sync passphrase error UI, i.e.
 // whether a missing passphrase is preventing Sync from fully starting up.
-bool ShouldShowPassphraseError(const syncer::SyncService* service);
+bool ShouldShowSyncPassphraseError(const syncer::SyncService* service);
 
 // Returns whether missing trusted vault keys is preventing sync from starting
 // up encrypted datatypes.
@@ -155,6 +153,4 @@
 void OpenTabForSyncTrustedVaultUserActionForTesting(Browser* browser,
                                                     const GURL& url);
 
-}  // namespace sync_ui_util
-
 #endif  // CHROME_BROWSER_SYNC_SYNC_UI_UTIL_H_
diff --git a/chrome/browser/sync/sync_ui_util_unittest.cc b/chrome/browser/sync/sync_ui_util_unittest.cc
index 5bc68368..2f336735 100644
--- a/chrome/browser/sync/sync_ui_util_unittest.cc
+++ b/chrome/browser/sync/sync_ui_util_unittest.cc
@@ -23,16 +23,9 @@
 #include "base/test/scoped_feature_list.h"
 #endif
 
-namespace sync_ui_util {
-
-void PrintTo(const StatusLabels& labels, std::ostream* out) {
-  *out << "{" << labels.message_type << ", " << labels.status_label_string_id
-       << ", " << labels.button_string_id << ", " << labels.action_type << "}";
-}
-
 namespace {
 
-MATCHER_P4(StatusLabelsMatch,
+MATCHER_P4(SyncStatusLabelsMatch,
            message_type,
            status_label_string_id,
            button_string_id,
@@ -77,9 +70,9 @@
 
 // Sets up a TestSyncService to emulate one of a number of distinct cases in
 // order to perform tests on the generated messages. Returns the expected value
-// GetStatusLabels should return.
+// GetSyncStatusLabels should return.
 // TODO(mastiz): Split the cases below to separate tests.
-StatusLabels SetUpDistinctCase(
+SyncStatusLabels SetUpDistinctCase(
     syncer::TestSyncService* service,
     signin::IdentityTestEnvironment* test_environment,
     DistinctState case_number) {
@@ -88,8 +81,8 @@
       service->SetFirstSetupComplete(false);
       service->SetSetupInProgress(true);
       service->SetDetailedSyncStatus(false, syncer::SyncStatus());
-      return {PRE_SYNCED, IDS_SYNC_SETUP_IN_PROGRESS, IDS_SETTINGS_EMPTY_STRING,
-              NO_ACTION};
+      return {SyncStatusMessageType::kPreSynced, IDS_SYNC_SETUP_IN_PROGRESS,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     }
     case STATUS_CASE_SETUP_ERROR: {
       service->SetFirstSetupComplete(false);
@@ -98,13 +91,13 @@
           syncer::SyncService::DISABLE_REASON_UNRECOVERABLE_ERROR);
       service->SetDetailedSyncStatus(false, syncer::SyncStatus());
       return {
-        SYNC_ERROR,
+        SyncStatusMessageType::kSyncError,
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
             IDS_SYNC_STATUS_UNRECOVERABLE_ERROR,
 #else
             IDS_SYNC_STATUS_UNRECOVERABLE_ERROR_NEEDS_SIGNOUT,
 #endif
-            IDS_SYNC_RELOGIN_BUTTON, REAUTHENTICATE
+            IDS_SYNC_RELOGIN_BUTTON, SyncStatusActionType::kReauthenticate
       };
     }
     case STATUS_CASE_AUTH_ERROR: {
@@ -125,8 +118,8 @@
           account_id,
           GoogleServiceAuthError(GoogleServiceAuthError::State::SERVICE_ERROR));
       service->SetDisableReasons(syncer::SyncService::DisableReasonSet());
-      return {SYNC_ERROR, IDS_SYNC_RELOGIN_ERROR, IDS_SYNC_RELOGIN_BUTTON,
-              REAUTHENTICATE};
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_RELOGIN_ERROR,
+              IDS_SYNC_RELOGIN_BUTTON, SyncStatusActionType::kReauthenticate};
     }
     case STATUS_CASE_PROTOCOL_ERROR: {
       service->SetFirstSetupComplete(true);
@@ -138,16 +131,18 @@
       status.sync_protocol_error = protocol_error;
       service->SetDetailedSyncStatus(false, status);
       service->SetDisableReasons(syncer::SyncService::DisableReasonSet());
-      return {SYNC_ERROR, IDS_SYNC_UPGRADE_CLIENT,
-              IDS_SYNC_UPGRADE_CLIENT_BUTTON, UPGRADE_CLIENT};
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_UPGRADE_CLIENT,
+              IDS_SYNC_UPGRADE_CLIENT_BUTTON,
+              SyncStatusActionType::kUpgradeClient};
     }
     case STATUS_CASE_CONFIRM_SYNC_SETTINGS: {
       service->SetFirstSetupComplete(false);
       service->SetPassphraseRequired(false);
       service->SetDetailedSyncStatus(false, syncer::SyncStatus());
-      return {SYNC_ERROR, IDS_SYNC_SETTINGS_NOT_CONFIRMED,
+      return {SyncStatusMessageType::kSyncError,
+              IDS_SYNC_SETTINGS_NOT_CONFIRMED,
               IDS_SYNC_ERROR_USER_MENU_CONFIRM_SYNC_SETTINGS_BUTTON,
-              CONFIRM_SYNC_SETTINGS};
+              SyncStatusActionType::kConfirmSyncSettings};
     }
     case STATUS_CASE_PASSPHRASE_ERROR: {
       service->SetFirstSetupComplete(true);
@@ -156,8 +151,9 @@
       service->SetDisableReasons(syncer::SyncService::DisableReasonSet());
       service->SetPassphraseRequired(true);
       service->SetPassphraseRequiredForPreferredDataTypes(true);
-      return {SYNC_ERROR, IDS_SYNC_STATUS_NEEDS_PASSWORD,
-              IDS_SYNC_STATUS_NEEDS_PASSWORD_BUTTON, ENTER_PASSPHRASE};
+      return {SyncStatusMessageType::kSyncError, IDS_SYNC_STATUS_NEEDS_PASSWORD,
+              IDS_SYNC_STATUS_NEEDS_PASSWORD_BUTTON,
+              SyncStatusActionType::kEnterPassphrase};
     }
     case STATUS_CASE_TRUSTED_VAULT_KEYS_ERROR:
       service->SetFirstSetupComplete(true);
@@ -166,8 +162,9 @@
       service->SetDisableReasons(syncer::SyncService::DisableReasonSet());
       service->SetPassphraseRequired(false);
       service->SetTrustedVaultKeyRequiredForPreferredDataTypes(true);
-      return {PASSWORDS_ONLY_SYNC_ERROR, IDS_SETTINGS_EMPTY_STRING,
-              IDS_SYNC_STATUS_NEEDS_KEYS_BUTTON, RETRIEVE_TRUSTED_VAULT_KEYS};
+      return {SyncStatusMessageType::kPasswordsOnlySyncError,
+              IDS_SETTINGS_EMPTY_STRING, IDS_SYNC_STATUS_NEEDS_KEYS_BUTTON,
+              SyncStatusActionType::kRetrieveTrustedVaultKeys};
     case STATUS_CASE_TRUSTED_VAULT_RECOVERABILITY_ERROR:
       service->SetFirstSetupComplete(true);
       service->SetTransportState(syncer::SyncService::TransportState::ACTIVE);
@@ -175,16 +172,16 @@
       service->SetDisableReasons(syncer::SyncService::DisableReasonSet());
       service->SetPassphraseRequired(false);
       service->SetTrustedVaultRecoverabilityDegraded(true);
-      return {SYNCED, IDS_SYNC_ACCOUNT_SYNCING, IDS_SETTINGS_EMPTY_STRING,
-              NO_ACTION};
+      return {SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     case STATUS_CASE_SYNCED: {
       service->SetFirstSetupComplete(true);
       service->SetTransportState(syncer::SyncService::TransportState::ACTIVE);
       service->SetDetailedSyncStatus(false, syncer::SyncStatus());
       service->SetDisableReasons(syncer::SyncService::DisableReasonSet());
       service->SetPassphraseRequired(false);
-      return {SYNCED, IDS_SYNC_ACCOUNT_SYNCING, IDS_SETTINGS_EMPTY_STRING,
-              NO_ACTION};
+      return {SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     }
     case STATUS_CASE_SYNC_DISABLED_BY_POLICY: {
       service->SetDisableReasons(
@@ -193,8 +190,9 @@
       service->SetTransportState(syncer::SyncService::TransportState::DISABLED);
       service->SetPassphraseRequired(false);
       service->SetDetailedSyncStatus(false, syncer::SyncStatus());
-      return {SYNCED, IDS_SIGNED_IN_WITH_SYNC_DISABLED_BY_POLICY,
-              IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+      return {SyncStatusMessageType::kSynced,
+              IDS_SIGNED_IN_WITH_SYNC_DISABLED_BY_POLICY,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     }
     case STATUS_CASE_SYNC_RESET_FROM_DASHBOARD: {
       // Note: On desktop, if there is a primary account, then
@@ -206,18 +204,19 @@
       service->SetTransportState(syncer::SyncService::TransportState::ACTIVE);
       service->SetPassphraseRequired(false);
       service->SetDetailedSyncStatus(false, syncer::SyncStatus());
-      return {SYNC_ERROR, IDS_SIGNED_IN_WITH_SYNC_STOPPED_VIA_DASHBOARD,
-              IDS_SETTINGS_EMPTY_STRING, NO_ACTION};
+      return {SyncStatusMessageType::kSyncError,
+              IDS_SIGNED_IN_WITH_SYNC_STOPPED_VIA_DASHBOARD,
+              IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
     }
     case NUMBER_OF_STATUS_CASES:
       NOTREACHED();
   }
-  return {PRE_SYNCED, IDS_SETTINGS_EMPTY_STRING, IDS_SETTINGS_EMPTY_STRING,
-          NO_ACTION};
+  return {SyncStatusMessageType::kPreSynced, IDS_SETTINGS_EMPTY_STRING,
+          IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction};
 }
 
 // This test ensures that each distinctive SyncService status will return a
-// proper status and link messages from GetStatusLabels().
+// proper status and link messages from GetSyncStatusLabels().
 TEST(SyncUIUtilTest, DistinctCasesReportProperMessages) {
   base::test::TaskEnvironment task_environment;
 
@@ -229,15 +228,15 @@
     environment.MakePrimaryAccountAvailable(kTestUser,
                                             signin::ConsentLevel::kSync);
 
-    StatusLabels expected_labels = SetUpDistinctCase(
+    SyncStatusLabels expected_labels = SetUpDistinctCase(
         &service, &environment, static_cast<DistinctState>(index));
 
-    EXPECT_THAT(GetStatusLabels(&service, environment.identity_manager(),
-                                /*is_user_signout_allowed=*/true),
-                StatusLabelsMatch(expected_labels.message_type,
-                                  expected_labels.status_label_string_id,
-                                  expected_labels.button_string_id,
-                                  expected_labels.action_type));
+    EXPECT_THAT(GetSyncStatusLabels(&service, environment.identity_manager(),
+                                    /*is_user_signout_allowed=*/true),
+                SyncStatusLabelsMatch(expected_labels.message_type,
+                                      expected_labels.status_label_string_id,
+                                      expected_labels.button_string_id,
+                                      expected_labels.action_type));
   }
 }
 
@@ -255,26 +254,30 @@
   service.SetDetailedSyncStatus(true, syncer::SyncStatus());
 
   // Expect the generic unrecoverable error action which is to reauthenticate.
-  EXPECT_THAT(GetStatusLabels(&service, environment.identity_manager(),
-                              /*is_user_signout_allowed=*/true),
-              StatusLabelsMatch(SYNC_ERROR,
+  int unrecoverable_error =
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
-                                IDS_SYNC_STATUS_UNRECOVERABLE_ERROR,
+      IDS_SYNC_STATUS_UNRECOVERABLE_ERROR;
 #else
-                                IDS_SYNC_STATUS_UNRECOVERABLE_ERROR_NEEDS_SIGNOUT,
+      IDS_SYNC_STATUS_UNRECOVERABLE_ERROR_NEEDS_SIGNOUT;
 #endif
-                                IDS_SYNC_RELOGIN_BUTTON, REAUTHENTICATE));
+  EXPECT_THAT(
+      GetSyncStatusLabels(&service, environment.identity_manager(),
+                          /*is_user_signout_allowed=*/true),
+      SyncStatusLabelsMatch(SyncStatusMessageType::kSyncError,
+                            unrecoverable_error, IDS_SYNC_RELOGIN_BUTTON,
+                            SyncStatusActionType::kReauthenticate));
 
-  // This time set action to UPGRADE_CLIENT.
+  // This time set action to SyncStatusActionType::kUpgradeClient.
   syncer::SyncStatus status;
   status.sync_protocol_error.action = syncer::UPGRADE_CLIENT;
   service.SetDetailedSyncStatus(true, status);
 
-  EXPECT_THAT(
-      GetStatusLabels(&service, environment.identity_manager(),
-                      /*is_user_signout_allowed=*/true),
-      StatusLabelsMatch(SYNC_ERROR, IDS_SYNC_UPGRADE_CLIENT,
-                        IDS_SYNC_UPGRADE_CLIENT_BUTTON, UPGRADE_CLIENT));
+  EXPECT_THAT(GetSyncStatusLabels(&service, environment.identity_manager(),
+                                  /*is_user_signout_allowed=*/true),
+              SyncStatusLabelsMatch(SyncStatusMessageType::kSyncError,
+                                    IDS_SYNC_UPGRADE_CLIENT,
+                                    IDS_SYNC_UPGRADE_CLIENT_BUTTON,
+                                    SyncStatusActionType::kUpgradeClient));
 }
 
 TEST(SyncUIUtilTest, ActionableErrorWithPassiveMessage) {
@@ -287,17 +290,18 @@
   service.SetDisableReasons(
       syncer::SyncService::DISABLE_REASON_UNRECOVERABLE_ERROR);
 
-  // Set action to UPGRADE_CLIENT.
+  // Set action to SyncStatusActionType::kUpgradeClient.
   syncer::SyncStatus status;
   status.sync_protocol_error.action = syncer::UPGRADE_CLIENT;
   service.SetDetailedSyncStatus(true, status);
 
   // Expect a 'client upgrade' call to action.
-  EXPECT_THAT(
-      GetStatusLabels(&service, environment.identity_manager(),
-                      /*is_user_signout_allowed=*/true),
-      StatusLabelsMatch(SYNC_ERROR, IDS_SYNC_UPGRADE_CLIENT,
-                        IDS_SYNC_UPGRADE_CLIENT_BUTTON, UPGRADE_CLIENT));
+  EXPECT_THAT(GetSyncStatusLabels(&service, environment.identity_manager(),
+                                  /*is_user_signout_allowed=*/true),
+              SyncStatusLabelsMatch(SyncStatusMessageType::kSyncError,
+                                    IDS_SYNC_UPGRADE_CLIENT,
+                                    IDS_SYNC_UPGRADE_CLIENT_BUTTON,
+                                    SyncStatusActionType::kUpgradeClient));
 }
 
 TEST(SyncUIUtilTest, SyncSettingsConfirmationNeededTest) {
@@ -310,11 +314,12 @@
   ASSERT_TRUE(ShouldRequestSyncConfirmation(&service));
 
   EXPECT_THAT(
-      GetStatusLabels(&service, environment.identity_manager(),
-                      /*is_user_signout_allowed=*/true),
-      StatusLabelsMatch(SYNC_ERROR, IDS_SYNC_SETTINGS_NOT_CONFIRMED,
-                        IDS_SYNC_ERROR_USER_MENU_CONFIRM_SYNC_SETTINGS_BUTTON,
-                        CONFIRM_SYNC_SETTINGS));
+      GetSyncStatusLabels(&service, environment.identity_manager(),
+                          /*is_user_signout_allowed=*/true),
+      SyncStatusLabelsMatch(
+          SyncStatusMessageType::kSyncError, IDS_SYNC_SETTINGS_NOT_CONFIRMED,
+          IDS_SYNC_ERROR_USER_MENU_CONFIRM_SYNC_SETTINGS_BUTTON,
+          SyncStatusActionType::kConfirmSyncSettings));
 }
 
 // Errors in non-sync accounts should be ignored.
@@ -334,10 +339,11 @@
       environment.MakeAccountAvailable("secondary-user@example.com");
 
   // Verify that we do not have any existing errors.
-  ASSERT_THAT(GetStatusLabels(&service, environment.identity_manager(),
-                              /*is_user_signout_allowed=*/true),
-              StatusLabelsMatch(MessageType::SYNCED, IDS_SYNC_ACCOUNT_SYNCING,
-                                IDS_SETTINGS_EMPTY_STRING, NO_ACTION));
+  ASSERT_THAT(GetSyncStatusLabels(&service, environment.identity_manager(),
+                                  /*is_user_signout_allowed=*/true),
+              SyncStatusLabelsMatch(
+                  SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+                  IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction));
 
   // Add an error to the secondary account.
   environment.UpdatePersistentErrorOfRefreshTokenForAccount(
@@ -346,48 +352,47 @@
           GoogleServiceAuthError::State::INVALID_GAIA_CREDENTIALS));
 
   // Verify that we do not see any sign-in errors.
-  EXPECT_THAT(GetStatusLabels(&service, environment.identity_manager(),
-                              /*is_user_signout_allowed=*/true),
-              StatusLabelsMatch(MessageType::SYNCED, IDS_SYNC_ACCOUNT_SYNCING,
-                                IDS_SETTINGS_EMPTY_STRING, NO_ACTION));
+  EXPECT_THAT(GetSyncStatusLabels(&service, environment.identity_manager(),
+                                  /*is_user_signout_allowed=*/true),
+              SyncStatusLabelsMatch(
+                  SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+                  IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction));
 }
 
-TEST(SyncUIUtilTest, ShouldShowPassphraseError) {
+TEST(SyncUIUtilTest, ShouldShowSyncPassphraseError) {
   syncer::TestSyncService service;
   service.SetFirstSetupComplete(true);
   service.SetPassphraseRequiredForPreferredDataTypes(true);
-  EXPECT_TRUE(ShouldShowPassphraseError(&service));
+  EXPECT_TRUE(ShouldShowSyncPassphraseError(&service));
 }
 
-TEST(SyncUIUtilTest, ShouldShowPassphraseError_SyncDisabled) {
+TEST(SyncUIUtilTest, ShouldShowSyncPassphraseError_SyncDisabled) {
   syncer::TestSyncService service;
   service.SetFirstSetupComplete(false);
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   service.GetUserSettings()->SetOsSyncFeatureEnabled(false);
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
   service.SetPassphraseRequiredForPreferredDataTypes(true);
-  EXPECT_FALSE(ShouldShowPassphraseError(&service));
+  EXPECT_FALSE(ShouldShowSyncPassphraseError(&service));
 }
 
-TEST(SyncUIUtilTest, ShouldShowPassphraseError_NotUsingPassphrase) {
+TEST(SyncUIUtilTest, ShouldShowSyncPassphraseError_NotUsingPassphrase) {
   syncer::TestSyncService service;
   service.SetFirstSetupComplete(true);
   service.SetPassphraseRequiredForPreferredDataTypes(false);
-  EXPECT_FALSE(ShouldShowPassphraseError(&service));
+  EXPECT_FALSE(ShouldShowSyncPassphraseError(&service));
 }
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
-TEST(SyncUIUtilTest, ShouldShowPassphraseError_OsSyncEnabled) {
+TEST(SyncUIUtilTest, ShouldShowSyncPassphraseError_OsSyncEnabled) {
   base::test::ScopedFeatureList feature_list;
   feature_list.InitAndEnableFeature(chromeos::features::kSplitSettingsSync);
   syncer::TestSyncService service;
   service.SetPassphraseRequiredForPreferredDataTypes(true);
   service.SetFirstSetupComplete(false);
   service.GetUserSettings()->SetOsSyncFeatureEnabled(true);
-  EXPECT_TRUE(ShouldShowPassphraseError(&service));
+  EXPECT_TRUE(ShouldShowSyncPassphraseError(&service));
 }
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
 }  // namespace
-
-}  // namespace sync_ui_util
diff --git a/chrome/browser/sync/test/integration/single_client_nigori_sync_test.cc b/chrome/browser/sync/test/integration/single_client_nigori_sync_test.cc
index 2b680ae..edc3d77 100644
--- a/chrome/browser/sync/test/integration/single_client_nigori_sync_test.cc
+++ b/chrome/browser/sync/test/integration/single_client_nigori_sync_test.cc
@@ -626,21 +626,21 @@
                   ->GetUserSettings()
                   ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
   ASSERT_FALSE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  ASSERT_TRUE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  ASSERT_TRUE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                             GetProfile(0)->GetPrefs()));
 
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
   // Verify the profile-menu error string.
-  ASSERT_EQ(sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR,
-            sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)));
+  ASSERT_EQ(AvatarSyncErrorType::kTrustedVaultKeyMissingForPasswordsError,
+            GetAvatarSyncErrorType(GetProfile(0)));
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 
   // Verify the string that would be displayed in settings.
-  ASSERT_THAT(sync_ui_util::GetStatusLabels(GetProfile(0)),
-              StatusLabelsMatch(sync_ui_util::PASSWORDS_ONLY_SYNC_ERROR,
-                                IDS_SETTINGS_EMPTY_STRING,
-                                IDS_SYNC_STATUS_NEEDS_KEYS_BUTTON,
-                                sync_ui_util::RETRIEVE_TRUSTED_VAULT_KEYS));
+  ASSERT_THAT(GetSyncStatusLabels(GetProfile(0)),
+              StatusLabelsMatch(
+                  SyncStatusMessageType::kPasswordsOnlySyncError,
+                  IDS_SETTINGS_EMPTY_STRING, IDS_SYNC_STATUS_NEEDS_KEYS_BUTTON,
+                  SyncStatusActionType::kRetrieveTrustedVaultKeys));
 
   // There needs to be an existing tab for the second tab (the retrieval flow)
   // to be closeable via javascript.
@@ -649,8 +649,7 @@
 
   // Mimic opening a web page where the user can interact with the retrieval
   // flow.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -663,16 +662,16 @@
   EXPECT_FALSE(GetSyncService(0)
                    ->GetUserSettings()
                    ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
-  EXPECT_FALSE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
-  EXPECT_THAT(
-      sync_ui_util::GetStatusLabels(GetProfile(0)),
-      StatusLabelsMatch(sync_ui_util::SYNCED, IDS_SYNC_ACCOUNT_SYNCING,
-                        IDS_SETTINGS_EMPTY_STRING, sync_ui_util::NO_ACTION));
+  EXPECT_FALSE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                              GetProfile(0)->GetPrefs()));
+  EXPECT_THAT(GetSyncStatusLabels(GetProfile(0)),
+              StatusLabelsMatch(
+                  SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+                  IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction));
 
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
   // Verify the profile-menu error string is empty.
-  EXPECT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  EXPECT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 }
 
@@ -691,8 +690,7 @@
 
   // Mimic opening a web page where the user can interact with the retrieval
   // flow, while the user is signed out.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -722,18 +720,18 @@
                    ->GetUserSettings()
                    ->IsTrustedVaultRecoverabilityDegraded());
   EXPECT_TRUE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  EXPECT_FALSE(sync_ui_util::ShouldShowSyncKeysMissingError(
+  EXPECT_FALSE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                              GetProfile(0)->GetPrefs()));
+  EXPECT_FALSE(ShouldShowTrustedVaultDegradedRecoverabilityError(
       GetSyncService(0), GetProfile(0)->GetPrefs()));
-  EXPECT_FALSE(sync_ui_util::ShouldShowTrustedVaultDegradedRecoverabilityError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
-  EXPECT_THAT(
-      sync_ui_util::GetStatusLabels(GetProfile(0)),
-      StatusLabelsMatch(sync_ui_util::SYNCED, IDS_SYNC_ACCOUNT_SYNCING,
-                        IDS_SETTINGS_EMPTY_STRING, sync_ui_util::NO_ACTION));
+  EXPECT_THAT(GetSyncStatusLabels(GetProfile(0)),
+              StatusLabelsMatch(
+                  SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+                  IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction));
 
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
   // Verify the profile-menu error string is empty.
-  EXPECT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  EXPECT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 }
 
@@ -758,8 +756,7 @@
   TrustedVaultKeysChangedStateChecker keys_fetched_checker(GetSyncService(0));
   // Mimic opening a web page where the user can interact with the retrieval
   // flow, while the user is signed out.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -791,8 +788,8 @@
                   ->GetUserSettings()
                   ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
   EXPECT_FALSE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  EXPECT_TRUE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  EXPECT_TRUE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                             GetProfile(0)->GetPrefs()));
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -812,8 +809,8 @@
                   ->GetUserSettings()
                   ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
   ASSERT_FALSE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  ASSERT_TRUE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  ASSERT_TRUE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                             GetProfile(0)->GetPrefs()));
 
   // There needs to be an existing tab for the second tab (the retrieval flow)
   // to be closeable via javascript.
@@ -822,8 +819,7 @@
 
   // Mimic opening a web page where the user can interact with the retrieval
   // flow.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -881,8 +877,8 @@
                   ->GetUserSettings()
                   ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
   ASSERT_FALSE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  ASSERT_TRUE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  ASSERT_TRUE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                             GetProfile(0)->GetPrefs()));
 
   // There needs to be an existing tab for the second tab (the retrieval flow)
   // to be closeable via javascript.
@@ -891,8 +887,7 @@
 
   // Mimic opening a web page where the user can interact with the retrieval
   // flow.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -951,8 +946,8 @@
                   ->GetUserSettings()
                   ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
   ASSERT_FALSE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  ASSERT_TRUE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  ASSERT_TRUE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                             GetProfile(0)->GetPrefs()));
 
   histogram_tester.ExpectUniqueSample("Sync.TrustedVaultErrorShownOnStartup",
                                       /*sample=*/1, /*expected_count=*/1);
@@ -975,8 +970,7 @@
   TrustedVaultKeysChangedStateChecker keys_fetched_checker(GetSyncService(0));
   // Mimic opening a web page where the user can interact with the retrieval
   // flow, while the user is signed out.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -1005,8 +999,8 @@
                    ->GetUserSettings()
                    ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
   ASSERT_TRUE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
-  ASSERT_FALSE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  ASSERT_FALSE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                              GetProfile(0)->GetPrefs()));
 
   histogram_tester.ExpectUniqueSample("Sync.TrustedVaultErrorShownOnStartup",
                                       /*sample=*/0, /*expected_count=*/1);
@@ -1051,8 +1045,7 @@
 
   // Mimic opening a web page where the user can interact with the retrieval
   // flow.
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
-                                                               retrieval_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0), retrieval_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
@@ -1105,46 +1098,46 @@
   ASSERT_FALSE(GetSyncService(0)
                    ->GetUserSettings()
                    ->IsTrustedVaultKeyRequiredForPreferredDataTypes());
-  ASSERT_FALSE(sync_ui_util::ShouldShowSyncKeysMissingError(
-      GetSyncService(0), GetProfile(0)->GetPrefs()));
+  ASSERT_FALSE(ShouldShowSyncKeysMissingError(GetSyncService(0),
+                                              GetProfile(0)->GetPrefs()));
 
   EXPECT_TRUE(GetSyncService(0)
                   ->GetUserSettings()
                   ->IsTrustedVaultRecoverabilityDegraded());
-  EXPECT_TRUE(sync_ui_util::ShouldShowTrustedVaultDegradedRecoverabilityError(
+  EXPECT_TRUE(ShouldShowTrustedVaultDegradedRecoverabilityError(
       GetSyncService(0), GetProfile(0)->GetPrefs()));
 
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
-  // Verify the profile-menu error string.
+  // Verify the profile-menu error string is empty.
   EXPECT_EQ(
-      sync_ui_util::TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR,
-      sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)));
+      AvatarSyncErrorType::kTrustedVaultRecoverabilityDegradedForPasswordsError,
+      GetAvatarSyncErrorType(GetProfile(0)));
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 
   // No messages expected in settings.
-  EXPECT_THAT(
-      sync_ui_util::GetStatusLabels(GetProfile(0)),
-      StatusLabelsMatch(sync_ui_util::SYNCED, IDS_SYNC_ACCOUNT_SYNCING,
-                        IDS_SETTINGS_EMPTY_STRING, sync_ui_util::NO_ACTION));
+  EXPECT_THAT(GetSyncStatusLabels(GetProfile(0)),
+              StatusLabelsMatch(
+                  SyncStatusMessageType::kSynced, IDS_SYNC_ACCOUNT_SYNCING,
+                  IDS_SETTINGS_EMPTY_STRING, SyncStatusActionType::kNoAction));
 
   // Mimic opening a web page where the user can interact with the degraded
   // recoverability flow. Before that, there needs to be an existing tab for the
   // second tab to be closeable via javascript.
   chrome::AddTabAt(GetBrowser(0), GURL(url::kAboutBlankURL), /*index=*/0,
                    /*foreground=*/true);
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(
-      GetBrowser(0), recoverability_url);
+  OpenTabForSyncTrustedVaultUserActionForTesting(GetBrowser(0),
+                                                 recoverability_url);
   ASSERT_THAT(GetBrowser(0)->tab_strip_model()->GetActiveWebContents(),
               NotNull());
 
   EXPECT_TRUE(
       TrustedVaultRecoverabilityNotDegradedChecker(GetSyncService(0)).Wait());
-  EXPECT_FALSE(sync_ui_util::ShouldShowTrustedVaultDegradedRecoverabilityError(
+  EXPECT_FALSE(ShouldShowTrustedVaultDegradedRecoverabilityError(
       GetSyncService(0), GetProfile(0)->GetPrefs()));
 
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
   // Verify the profile-menu error string is empty.
-  EXPECT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  EXPECT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 
   // TODO(crbug.com/1201659): Verify the recovery method hint added to the fake
@@ -1281,15 +1274,15 @@
 
   // Chrome isn't trying to sync passwords, because the user hasn't opted in to
   // passwords account storage. So the error shouldn't be surfaced yet.
-  ASSERT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  ASSERT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 
   password_manager::features_util::OptInToAccountStorage(
       GetProfile(0)->GetPrefs(), GetSyncService(0));
 
   // The error is now shown, because PASSWORDS is trying to sync. The data
   // type isn't active yet though due to the missing encryption keys.
-  ASSERT_EQ(sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR,
-            sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)));
+  ASSERT_EQ(AvatarSyncErrorType::kTrustedVaultKeyMissingForPasswordsError,
+            GetAvatarSyncErrorType(GetProfile(0)));
   ASSERT_FALSE(GetSyncService(0)->GetActiveDataTypes().Has(syncer::PASSWORDS));
 
   // Let's resolve the error. Mimic opening the web page where the user would
@@ -1297,7 +1290,7 @@
   // closed via javascript.
   chrome::AddTabAt(GetBrowser(0), GURL(url::kAboutBlankURL), /*index=*/0,
                    /*foreground=*/true);
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(
+  OpenTabForSyncTrustedVaultUserActionForTesting(
       GetBrowser(0),
       GetTrustedVaultRetrievalURL(*embedded_test_server(), kTestEncryptionKey));
 
@@ -1310,7 +1303,7 @@
 
   // PASSWORDS should become active and the error should disappear.
   EXPECT_TRUE(PasswordSyncActiveChecker(GetSyncService(0)).Wait());
-  EXPECT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  EXPECT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 }
 
 IN_PROC_BROWSER_TEST_F(
@@ -1333,15 +1326,15 @@
 
   // Chrome isn't trying to sync passwords, because the user hasn't opted in to
   // passwords account storage. So the error shouldn't be surfaced yet.
-  ASSERT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  ASSERT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 
   password_manager::features_util::OptInToAccountStorage(
       GetProfile(0)->GetPrefs(), GetSyncService(0));
 
   // The error is now shown, because PASSWORDS is trying to sync.
   ASSERT_EQ(
-      sync_ui_util::TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR,
-      sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)));
+      AvatarSyncErrorType::kTrustedVaultRecoverabilityDegradedForPasswordsError,
+      GetAvatarSyncErrorType(GetProfile(0)));
 
   // Let's resolve the error. Mimic opening a web page where the user would
   // interact with the degraded recoverability flow. Add an extra tab so the
@@ -1350,13 +1343,13 @@
   // retrieval page.
   chrome::AddTabAt(GetBrowser(0), GURL(url::kAboutBlankURL), /*index=*/0,
                    /*foreground=*/true);
-  sync_ui_util::OpenTabForSyncTrustedVaultUserActionForTesting(
+  OpenTabForSyncTrustedVaultUserActionForTesting(
       GetBrowser(0), GetTrustedVaultRecoverabilityURL(*embedded_test_server()));
   EXPECT_TRUE(
       TrustedVaultRecoverabilityNotDegradedChecker(GetSyncService(0)).Wait());
 
   // The error should have disappeared.
-  EXPECT_FALSE(sync_ui_util::GetAvatarSyncErrorType(GetProfile(0)).has_value());
+  EXPECT_FALSE(GetAvatarSyncErrorType(GetProfile(0)).has_value());
 }
 #endif  // !BUILDFLAG(IS_CHROMEOS_ASH)
 
diff --git a/chrome/browser/sync/test/integration/two_client_bookmarks_sync_test.cc b/chrome/browser/sync/test/integration/two_client_bookmarks_sync_test.cc
index 172beff..0c86420 100644
--- a/chrome/browser/sync/test/integration/two_client_bookmarks_sync_test.cc
+++ b/chrome/browser/sync/test/integration/two_client_bookmarks_sync_test.cc
@@ -2429,9 +2429,9 @@
   ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
 
   // Add initial bookmarks.
-  const size_t num_bookmarks = 5;
+  constexpr size_t kNumBookmarks = 5;
   std::vector<BookmarkNodeMatcher> matchers;
-  for (size_t i = 0; i < num_bookmarks; ++i) {
+  for (size_t i = 0; i < kNumBookmarks; ++i) {
     ASSERT_NE(nullptr, AddURL(0, i, IndexedURLTitle(i), GURL(IndexedURL(i))));
     matchers.push_back(
         IsUrlBookmarkWithTitleAndUrl(IndexedURLTitle(i), GURL(IndexedURL(i))));
@@ -2440,20 +2440,20 @@
   ASSERT_TRUE(BookmarksMatchChecker().Wait());
 
   // Make changes on client 0.
-  for (size_t i = 0; i < num_bookmarks; ++i) {
+  for (size_t i = 0; i < kNumBookmarks; ++i) {
     const BookmarkNode* node = GetUniqueNodeByURL(0, GURL(IndexedURL(i)));
     size_t rand_pos =
-        static_cast<size_t>(base::RandInt(0, int{num_bookmarks} - 1));
+        static_cast<size_t>(base::RandInt(0, int{kNumBookmarks} - 1));
     DVLOG(1) << "Moving client 0's bookmark " << i << " to position "
              << rand_pos;
     Move(0, node, node->parent(), rand_pos);
   }
 
   // Make changes on client 1.
-  for (size_t i = 0; i < num_bookmarks; ++i) {
+  for (size_t i = 0; i < kNumBookmarks; ++i) {
     const BookmarkNode* node = GetUniqueNodeByURL(1, GURL(IndexedURL(i)));
     size_t rand_pos =
-        static_cast<size_t>(base::RandInt(0, int{num_bookmarks} - 1));
+        static_cast<size_t>(base::RandInt(0, int{kNumBookmarks} - 1));
     DVLOG(1) << "Moving client 1's bookmark " << i << " to position "
              << rand_pos;
     Move(1, node, node->parent(), rand_pos);
@@ -2462,20 +2462,20 @@
   ASSERT_TRUE(BookmarksMatchChecker().Wait());
 
   // Now make changes to client 1 first.
-  for (size_t i = 0; i < num_bookmarks; ++i) {
+  for (size_t i = 0; i < kNumBookmarks; ++i) {
     const BookmarkNode* node = GetUniqueNodeByURL(1, GURL(IndexedURL(i)));
     size_t rand_pos =
-        static_cast<size_t>(base::RandInt(0, int{num_bookmarks} - 1));
+        static_cast<size_t>(base::RandInt(0, int{kNumBookmarks} - 1));
     DVLOG(1) << "Moving client 1's bookmark " << i << " to position "
              << rand_pos;
     Move(1, node, node->parent(), rand_pos);
   }
 
   // Make changes on client 0.
-  for (size_t i = 0; i < num_bookmarks; ++i) {
+  for (size_t i = 0; i < kNumBookmarks; ++i) {
     const BookmarkNode* node = GetUniqueNodeByURL(0, GURL(IndexedURL(i)));
     size_t rand_pos =
-        static_cast<size_t>(base::RandInt(0, int{num_bookmarks} - 1));
+        static_cast<size_t>(base::RandInt(0, int{kNumBookmarks} - 1));
     DVLOG(1) << "Moving client 0's bookmark " << i << " to position "
              << rand_pos;
     Move(0, node, node->parent(), rand_pos);
diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
index e924652d..4c80ef4 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -2922,8 +2922,6 @@
       "autofill/payments/webauthn_dialog_view.h",
       "frame/window_frame_util.cc",
       "frame/window_frame_util.h",
-      "passwords/account_storage_auth_helper.cc",
-      "passwords/account_storage_auth_helper.h",
       "signin_view_controller.cc",
       "signin_view_controller.h",
       "signin_view_controller_delegate.cc",
@@ -3076,6 +3074,8 @@
       sources += [
         "bookmarks/bookmark_bubble_sign_in_delegate.cc",
         "bookmarks/bookmark_bubble_sign_in_delegate.h",
+        "passwords/account_storage_auth_helper.cc",
+        "passwords/account_storage_auth_helper.h",
         "signin/dice_web_signin_interceptor_delegate.cc",
         "signin/dice_web_signin_interceptor_delegate.h",
         "signin/profile_customization_bubble_sync_controller.h",
@@ -3912,6 +3912,8 @@
       "views/hung_renderer_view.h",
       "views/importer/import_lock_dialog_view.cc",
       "views/importer/import_lock_dialog_view.h",
+      "views/incognito_clear_browsing_data_dialog.cc",
+      "views/incognito_clear_browsing_data_dialog.h",
       "views/infobars/alternate_nav_infobar_view.cc",
       "views/infobars/alternate_nav_infobar_view.h",
       "views/infobars/confirm_infobar.cc",
diff --git a/chrome/browser/ui/android/strings/android_chrome_strings.grd b/chrome/browser/ui/android/strings/android_chrome_strings.grd
index 2c2e393..6b639e59 100644
--- a/chrome/browser/ui/android/strings/android_chrome_strings.grd
+++ b/chrome/browser/ui/android/strings/android_chrome_strings.grd
@@ -290,9 +290,6 @@
       <message name="IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_SUMMARY" desc="Message of Google activity controls preference in signed in accounts settings screen">
         Control how your browsing history is used to personalize Search and more
       </message>
-      <message name="IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_SUMMARY_CHILD_ACCOUNT" desc="Message of Google activity controls preference in signed in accounts settings screen">
-        Control how your browsing history is used to personalize Search and more
-      </message>
       <!-- Unified consent preferences -->
       <message name="IDS_SIGN_OUT_AND_TURN_OFF_SYNC" desc="The text for a preferences row that for signs out the user and turns off sync.">
         Sign out and turn off sync
@@ -2656,9 +2653,6 @@
       <message name="IDS_SIGNIN_SYNC_DESCRIPTION" desc="Description of Sync feature for the screen that asks users to sign-in and turn on Sync.">
         Google may use your history to personalize Search and other Google services
       </message>
-      <message name="IDS_SIGNIN_SYNC_DESCRIPTION_CHILD_ACCOUNT" desc="Description of Sync feature for the screen that asks users to sign-in and turn on Sync.">
-        Google may use your history to personalize Search and other Google services
-      </message>
       <message name="IDS_SIGNIN_DETAILS_DESCRIPTION" desc="Message with a link to customize Sync settings. Shown on the screen that asks the user to turn on Sync.">
         You can always choose what to sync in <ph name="BEGIN_LINK1">&lt;LINK1&gt;</ph>settings<ph name="END_LINK1">&lt;/LINK1&gt;</ph>.
       </message>
diff --git a/chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGNIN_SYNC_DESCRIPTION_CHILD_ACCOUNT.png.sha1 b/chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGNIN_SYNC_DESCRIPTION_CHILD_ACCOUNT.png.sha1
deleted file mode 100644
index 377de0e..0000000
--- a/chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGNIN_SYNC_DESCRIPTION_CHILD_ACCOUNT.png.sha1
+++ /dev/null
@@ -1 +0,0 @@
-67e09901a6e663a7d8b931c7ba6ac19d301e22c3
\ No newline at end of file
diff --git a/chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_SUMMARY_CHILD_ACCOUNT.png.sha1 b/chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_SUMMARY_CHILD_ACCOUNT.png.sha1
deleted file mode 100644
index 05eb28a..0000000
--- a/chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_SUMMARY_CHILD_ACCOUNT.png.sha1
+++ /dev/null
@@ -1 +0,0 @@
-5b01275b6d095998953253b7818025847e3ae3b2
\ No newline at end of file
diff --git a/chrome/browser/ui/android/strings/translations/android_chrome_strings_en-GB.xtb b/chrome/browser/ui/android/strings/translations/android_chrome_strings_en-GB.xtb
index 95cdc14..a43fd175 100644
--- a/chrome/browser/ui/android/strings/translations/android_chrome_strings_en-GB.xtb
+++ b/chrome/browser/ui/android/strings/translations/android_chrome_strings_en-GB.xtb
@@ -52,6 +52,7 @@
 <translation id="1307205233980126133">Sorry, we couldn’t validate your credentials</translation>
 <translation id="1310482092992808703">Group tabs</translation>
 <translation id="1311657260431405215">This QR code is not a URL: <ph name="QRCODEVALUE" /></translation>
+<translation id="1316212908214730110">chrome_stylised_highlight_</translation>
 <translation id="1327257854815634930">Navigation history is opened</translation>
 <translation id="1331212799747679585">Chrome can’t update. More options</translation>
 <translation id="1332501820983677155">Google Chrome feature shortcuts</translation>
@@ -961,6 +962,7 @@
 <translation id="718926126787620637">List of bookmark folders opened at full height</translation>
 <translation id="7191430249889272776">Tab opened in background.</translation>
 <translation id="7233236755231902816">To see the web in your language, get the latest version of Chrome</translation>
+<translation id="7242755609445462077">Stylised highlight <ph name="CURRENT_DATE" /></translation>
 <translation id="7248069434667874558">Make sure that <ph name="TARGET_DEVICE_NAME" /> has sync turned on in Chrome</translation>
 <translation id="7252076891734325316">Place your phone close to the computer</translation>
 <translation id="7274013316676448362">Blocked site</translation>
diff --git a/chrome/browser/ui/android/strings/translations/android_chrome_strings_uz.xtb b/chrome/browser/ui/android/strings/translations/android_chrome_strings_uz.xtb
index bc870737..1babecd 100644
--- a/chrome/browser/ui/android/strings/translations/android_chrome_strings_uz.xtb
+++ b/chrome/browser/ui/android/strings/translations/android_chrome_strings_uz.xtb
@@ -52,6 +52,7 @@
 <translation id="1307205233980126133">Uzr, login va parolingizni tekshira olmadik</translation>
 <translation id="1310482092992808703">Varaqlarni guruhlash</translation>
 <translation id="1311657260431405215">QR kod URL manzil emas: <ph name="QRCODEVALUE" /></translation>
+<translation id="1316212908214730110">chrome_stylized_highlight_</translation>
 <translation id="1327257854815634930">Sahifalar tarixi ochildi</translation>
 <translation id="1331212799747679585">Chrome yangilanmadi. Boshqa sozlamalar</translation>
 <translation id="1332501820983677155">Google Chrome funksiyalari</translation>
@@ -961,6 +962,7 @@
 <translation id="718926126787620637">Bukmark jildlari roʻyxati toʻliq hajmda ochildi</translation>
 <translation id="7191430249889272776">Ichki oyna orqa fonda ochildi.</translation>
 <translation id="7233236755231902816">Internetni oʻz tilingizda kezish uchun Chrome eng oxirgi versiyasiga yangilanishi kerak</translation>
+<translation id="7242755609445462077"><ph name="CURRENT_DATE" /> uslubiy belgilovi</translation>
 <translation id="7248069434667874558"><ph name="TARGET_DEVICE_NAME" /> sozlamalarida Chrome sinxronizatsiyasi yoniqligini tekshiring</translation>
 <translation id="7252076891734325316">Telefoningizni kompyuterga yaqin tuting</translation>
 <translation id="7274013316676448362">Bloklangan sayt</translation>
diff --git a/chrome/browser/ui/app_list/search/search_result_ranker/app_launch_predictor_test_util.h b/chrome/browser/ui/app_list/search/search_result_ranker/app_launch_predictor_test_util.h
index ecbab87a6..8aca6697 100644
--- a/chrome/browser/ui/app_list/search/search_result_ranker/app_launch_predictor_test_util.h
+++ b/chrome/browser/ui/app_list/search/search_result_ranker/app_launch_predictor_test_util.h
@@ -11,7 +11,8 @@
 #include "chrome/browser/ui/app_list/search/search_result_ranker/frecency_store.pb.h"
 #include "chrome/browser/ui/app_list/search/search_result_ranker/recurrence_predictor.pb.h"
 #include "chrome/browser/ui/app_list/search/search_result_ranker/recurrence_ranker.pb.h"
-#include "third_party/protobuf/src/google/protobuf/stubs/mathutil.h"
+// TODO(crbug.com/1219417): Resolve usage of this header.
+#include "third_party/protobuf/src/google/protobuf/stubs/mathutil.h"  // nogncheck
 
 namespace app_list {
 
diff --git a/chrome/browser/ui/app_list/search/search_result_ranker/frecency_store_unittest.cc b/chrome/browser/ui/app_list/search/search_result_ranker/frecency_store_unittest.cc
index e977ba2..1313650 100644
--- a/chrome/browser/ui/app_list/search/search_result_ranker/frecency_store_unittest.cc
+++ b/chrome/browser/ui/app_list/search/search_result_ranker/frecency_store_unittest.cc
@@ -7,7 +7,8 @@
 #include "chrome/browser/ui/app_list/search/search_result_ranker/app_launch_predictor_test_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/protobuf/src/google/protobuf/stubs/mathutil.h"
+// TODO(crbug.com/1219417): Resolve usage of this header.
+#include "third_party/protobuf/src/google/protobuf/stubs/mathutil.h"  // nogncheck
 
 using testing::_;
 using testing::Contains;
diff --git a/chrome/browser/ui/ash/microphone_mute_notification_delegate_impl.cc b/chrome/browser/ui/ash/microphone_mute_notification_delegate_impl.cc
index 97f849a..3251250 100644
--- a/chrome/browser/ui/ash/microphone_mute_notification_delegate_impl.cc
+++ b/chrome/browser/ui/ash/microphone_mute_notification_delegate_impl.cc
@@ -99,12 +99,9 @@
 
 void MicrophoneMuteNotificationDelegateImpl::OnCapabilityAccessUpdate(
     const apps::CapabilityAccessUpdate& update) {
-  apps::mojom::OptionalBool using_mic = update.Microphone();
-  DCHECK(using_mic != apps::mojom::OptionalBool::kUnknown);
-
   base::Erase(mic_using_app_ids[active_user_account_id_], update.AppId());
 
-  if (using_mic == apps::mojom::OptionalBool::kTrue) {
+  if (update.Microphone() == apps::mojom::OptionalBool::kTrue) {
     mic_using_app_ids[active_user_account_id_].push_front(update.AppId());
   }
 }
diff --git a/chrome/browser/ui/autofill/autofill_popup_controller_unittest.cc b/chrome/browser/ui/autofill/autofill_popup_controller_unittest.cc
index ab21e2d..780f415 100644
--- a/chrome/browser/ui/autofill/autofill_popup_controller_unittest.cc
+++ b/chrome/browser/ui/autofill/autofill_popup_controller_unittest.cc
@@ -17,6 +17,7 @@
 #include "chrome/test/base/testing_profile.h"
 #include "components/autofill/content/browser/content_autofill_driver.h"
 #include "components/autofill/content/browser/content_autofill_driver_factory.h"
+#include "components/autofill/content/browser/content_autofill_router.h"
 #include "components/autofill/core/browser/autofill_external_delegate.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/autofill/core/browser/autofill_test_utils.h"
@@ -75,11 +76,14 @@
 
 class MockAutofillDriver : public ContentAutofillDriver {
  public:
-  MockAutofillDriver(content::RenderFrameHost* rfh, MockAutofillClient* client)
+  MockAutofillDriver(content::RenderFrameHost* rfh,
+                     MockAutofillClient* client,
+                     ContentAutofillRouter* router)
       : ContentAutofillDriver(
             rfh,
             client,
             kAppLocale,
+            router,
             kDownloadState,
             AutofillManager::AutofillManagerFactoryCallback()) {}
 
@@ -226,8 +230,7 @@
 class AutofillPopupControllerUnitTest : public ChromeRenderViewHostTestHarness {
  public:
   AutofillPopupControllerUnitTest()
-      : autofill_client_(new MockAutofillClient()),
-        autofill_popup_controller_(nullptr) {}
+      : autofill_client_(std::make_unique<MockAutofillClient>()) {}
   ~AutofillPopupControllerUnitTest() override = default;
 
   void SetUp() override {
@@ -246,6 +249,10 @@
       autofill_popup_controller_->DoHide();
 
     external_delegate_.reset();
+    autofill_manager_.reset();
+    autofill_driver_.reset();
+    autofill_router_.reset();
+
     ChromeRenderViewHostTestHarness::TearDown();
   }
 
@@ -278,9 +285,12 @@
 
  protected:
   std::unique_ptr<MockAutofillClient> autofill_client_;
+  std::unique_ptr<ContentAutofillRouter> autofill_router_;
+  std::unique_ptr<NiceMock<MockAutofillDriver>> autofill_driver_;
+  std::unique_ptr<MockBrowserAutofillManager> autofill_manager_;
   std::unique_ptr<NiceMock<MockAutofillExternalDelegate>> external_delegate_;
   std::unique_ptr<NiceMock<MockAutofillPopupView>> autofill_popup_view_;
-  NiceMock<TestAutofillPopupController>* autofill_popup_controller_;
+  NiceMock<TestAutofillPopupController>* autofill_popup_controller_ = nullptr;
 };
 
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
@@ -297,8 +307,10 @@
 
   std::unique_ptr<NiceMock<MockAutofillExternalDelegate>>
   CreateExternalDelegate() override {
+    autofill_router_ = std::make_unique<ContentAutofillRouter>();
     autofill_driver_ = std::make_unique<NiceMock<MockAutofillDriver>>(
-        web_contents()->GetMainFrame(), autofill_client_.get());
+        web_contents()->GetMainFrame(), autofill_client_.get(),
+        autofill_router_.get());
     autofill_manager_ = std::make_unique<MockBrowserAutofillManager>(
         autofill_driver_.get(), autofill_client_.get());
     return std::make_unique<NiceMock<MockAutofillExternalDelegate>>(
@@ -306,8 +318,6 @@
   }
 
  protected:
-  std::unique_ptr<MockBrowserAutofillManager> autofill_manager_;
-  std::unique_ptr<NiceMock<MockAutofillDriver>> autofill_driver_;
   content::testing::ScopedContentAXModeSetter accessibility_mode_setter_;
 };
 #endif
diff --git a/chrome/browser/ui/browser_command_controller.cc b/chrome/browser/ui/browser_command_controller.cc
index 2f1b65d..50561e4 100644
--- a/chrome/browser/ui/browser_command_controller.cc
+++ b/chrome/browser/ui/browser_command_controller.cc
@@ -48,6 +48,7 @@
 #include "chrome/browser/ui/web_applications/web_app_dialog_utils.h"
 #include "chrome/browser/ui/web_applications/web_app_launch_utils.h"
 #include "chrome/browser/ui/webui/inspect_ui.h"
+#include "chrome/common/chrome_features.h"
 #include "chrome/common/content_restriction.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
@@ -732,9 +733,16 @@
     case IDC_VIEW_PASSWORDS:
       ShowPasswordManager(browser_);
       break;
-    case IDC_CLEAR_BROWSING_DATA:
-      ShowClearBrowsingDataDialog(browser_);
+    case IDC_CLEAR_BROWSING_DATA: {
+      if (profile()->IsIncognitoProfile() &&
+          base::FeatureList::IsEnabled(
+              features::kIncognitoClearBrowsingDataDialogForDesktop)) {
+        ShowIncognitoClearBrowsingDataDialog(browser_);
+      } else {
+        ShowClearBrowsingDataDialog(browser_);
+      }
       break;
+    }
     case IDC_IMPORT_SETTINGS:
       ShowImportDialog(browser_);
       break;
@@ -1037,10 +1045,18 @@
       IDC_RECENT_TABS_MENU,
       (!profile()->IsGuestSession() && !profile()->IsSystemProfile() &&
        !profile()->IsIncognitoProfile()));
-  command_updater_.UpdateCommandEnabled(
-      IDC_CLEAR_BROWSING_DATA,
-      (!profile()->IsGuestSession() && !profile()->IsSystemProfile() &&
-       !profile()->IsIncognitoProfile()));
+
+  if (profile()->IsIncognitoProfile()) {
+    command_updater_.UpdateCommandEnabled(
+        IDC_CLEAR_BROWSING_DATA,
+        base::FeatureList::IsEnabled(
+            features::kIncognitoClearBrowsingDataDialogForDesktop));
+  } else {
+    command_updater_.UpdateCommandEnabled(
+        IDC_CLEAR_BROWSING_DATA,
+        (!profile()->IsGuestSession() && !profile()->IsSystemProfile()));
+  }
+
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   command_updater_.UpdateCommandEnabled(IDC_TAKE_SCREENSHOT, true);
   // Chrome OS uses the system tray menu to handle multi-profiles. Avatar menu
diff --git a/chrome/browser/ui/browser_command_controller_unittest.cc b/chrome/browser/ui/browser_command_controller_unittest.cc
index 4964caf..1117b5c 100644
--- a/chrome/browser/ui/browser_command_controller_unittest.cc
+++ b/chrome/browser/ui/browser_command_controller_unittest.cc
@@ -20,6 +20,7 @@
 #include "chrome/browser/ui/browser_window_state.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/browser_with_test_window_test.h"
@@ -542,3 +543,45 @@
 INSTANTIATE_TEST_SUITE_P(AllGuestTypes,
                          GuestBrowserCommandControllerTest,
                          /*is_ephemeral=*/testing::Bool());
+
+class IncognitoClearBrowsingDataCommandTest
+    : public BrowserWithTestWindowTest,
+      public testing::WithParamInterface<bool> {
+ public:
+  IncognitoClearBrowsingDataCommandTest() {
+    if (GetParam()) {
+      scoped_feature_list_.InitAndEnableFeature(
+          features::kIncognitoClearBrowsingDataDialogForDesktop);
+    } else {
+      scoped_feature_list_.InitAndDisableFeature(
+          features::kIncognitoClearBrowsingDataDialogForDesktop);
+    }
+  }
+
+ private:
+  base::test::ScopedFeatureList scoped_feature_list_;
+};
+
+INSTANTIATE_TEST_SUITE_P(
+    IncognitoClearBrowsingDataCommandTestWithFeatureFlag,
+    IncognitoClearBrowsingDataCommandTest,
+    /*should_show_cbd_option_in_incognito=*/testing::Bool());
+
+TEST_P(IncognitoClearBrowsingDataCommandTest,
+       testClearBrowsingDataOptionStateInIncognito) {
+  // Set up a profile with an off the record profile.
+  std::unique_ptr<TestingProfile> profile1 = TestingProfile::Builder().Build();
+  Profile* incognito_profile =
+      profile1->GetPrimaryOTRProfile(/*create_if_needed=*/true);
+  EXPECT_EQ(incognito_profile->GetOriginalProfile(), profile1.get());
+
+  // Create a new browser based on the off the record profile.
+  Browser::CreateParams profile_params(incognito_profile, true);
+  std::unique_ptr<Browser> incognito_browser =
+      CreateBrowserWithTestWindowForParams(profile_params);
+
+  chrome::BrowserCommandController command_controller(incognito_browser.get());
+  bool should_show_cbd_option_in_incognito = GetParam();
+  EXPECT_EQ(should_show_cbd_option_in_incognito,
+            command_controller.IsCommandEnabled(IDC_CLEAR_BROWSING_DATA));
+}
diff --git a/chrome/browser/ui/browser_commands.cc b/chrome/browser/ui/browser_commands.cc
index 540d6d3..2f186ec 100644
--- a/chrome/browser/ui/browser_commands.cc
+++ b/chrome/browser/ui/browser_commands.cc
@@ -1731,4 +1731,8 @@
 }
 #endif
 
+void ShowIncognitoClearBrowsingDataDialog(Browser* browser) {
+  browser->window()->ShowIncognitoClearBrowsingDataDialog();
+}
+
 }  // namespace chrome
diff --git a/chrome/browser/ui/browser_commands.h b/chrome/browser/ui/browser_commands.h
index f9a8906..5451afe9 100644
--- a/chrome/browser/ui/browser_commands.h
+++ b/chrome/browser/ui/browser_commands.h
@@ -229,6 +229,8 @@
 
 absl::optional<int> GetKeyboardFocusedTabIndex(const Browser* browser);
 
+void ShowIncognitoClearBrowsingDataDialog(Browser* browser);
+
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BROWSER_COMMANDS_H_
diff --git a/chrome/browser/ui/browser_window.h b/chrome/browser/ui/browser_window.h
index e1581f7e..e746691 100644
--- a/chrome/browser/ui/browser_window.h
+++ b/chrome/browser/ui/browser_window.h
@@ -531,6 +531,9 @@
   // in-product help.
   virtual FeaturePromoController* GetFeaturePromoController() = 0;
 
+  // Shows an Incognito clear browsing data dialog.
+  virtual void ShowIncognitoClearBrowsingDataDialog() = 0;
+
  protected:
   friend class BrowserCloseManager;
   friend class BrowserView;
diff --git a/chrome/browser/ui/passwords/account_storage_auth_helper.cc b/chrome/browser/ui/passwords/account_storage_auth_helper.cc
index 79b8d36..21dd45e 100644
--- a/chrome/browser/ui/passwords/account_storage_auth_helper.cc
+++ b/chrome/browser/ui/passwords/account_storage_auth_helper.cc
@@ -8,13 +8,8 @@
 #include <utility>
 
 #include "base/bind.h"
-#include "build/build_config.h"
-#include "chrome/browser/signin/identity_manager_factory.h"
 #include "chrome/browser/signin/reauth_result.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_finder.h"
 #include "components/password_manager/core/browser/password_feature_manager.h"
-#include "components/signin/public/base/signin_metrics.h"
 #include "components/signin/public/identity_manager/consent_level.h"
 #include "components/signin/public/identity_manager/identity_manager.h"
 #include "google_apis/gaia/core_account_id.h"
@@ -25,39 +20,37 @@
 }
 
 AccountStorageAuthHelper::AccountStorageAuthHelper(
-    Profile* profile,
-    password_manager::PasswordFeatureManager* password_feature_manager)
-    : profile_(profile),
+    signin::IdentityManager* identity_manager,
+    password_manager::PasswordFeatureManager* password_feature_manager,
+    base::RepeatingCallback<SigninViewController*()>
+        signin_view_controller_getter)
+    : identity_manager_(identity_manager),
       password_feature_manager_(password_feature_manager),
-      signin_view_controller_getter_(base::BindRepeating(
-          [](Profile* profile) -> SigninViewController* {
-            if (Browser* browser = chrome::FindBrowserWithProfile(profile))
-              return browser->signin_view_controller();
-            return nullptr;
-          },
-          profile_)) {}
+      signin_view_controller_getter_(std::move(signin_view_controller_getter)) {
+  DCHECK(password_feature_manager_);
+  DCHECK(signin_view_controller_getter_);
+}
 
 AccountStorageAuthHelper::~AccountStorageAuthHelper() = default;
 
 void AccountStorageAuthHelper::TriggerOptInReauth(
     signin_metrics::ReauthAccessPoint access_point,
     base::OnceCallback<void(ReauthSucceeded)> reauth_callback) {
-#if BUILDFLAG(ENABLE_DICE_SUPPORT)
   SigninViewController* signin_view_controller =
       signin_view_controller_getter_.Run();
   if (!signin_view_controller) {
     std::move(reauth_callback).Run(ReauthSucceeded(false));
     return;
   }
-  signin::IdentityManager* identity_manager =
-      IdentityManagerFactory::GetForProfile(profile_);
-  if (!identity_manager) {
+
+  if (!identity_manager_) {
     std::move(reauth_callback).Run(ReauthSucceeded(false));
     return;
   }
-  CoreAccountId primary_account_id =
-      identity_manager->GetPrimaryAccountId(signin::ConsentLevel::kSignin);
-  if (primary_account_id.empty()) {
+
+  CoreAccountId unconsented_account_id =
+      identity_manager_->GetPrimaryAccountId(signin::ConsentLevel::kSignin);
+  if (unconsented_account_id.empty()) {
     std::move(reauth_callback).Run(ReauthSucceeded(false));
     return;
   }
@@ -69,23 +62,17 @@
   }
 
   reauth_abort_handle_ = signin_view_controller->ShowReauthPrompt(
-      primary_account_id, access_point,
+      unconsented_account_id, access_point,
       base::BindOnce(&AccountStorageAuthHelper::OnOptInReauthCompleted,
                      weak_ptr_factory_.GetWeakPtr(),
                      std::move(reauth_callback)));
-#else
-  std::move(reauth_callback).Run(ReauthSucceeded(false));
-#endif  // BUILDFLAG(ENABLE_DICE_SUPPORT)
 }
 
 void AccountStorageAuthHelper::TriggerSignIn(
     signin_metrics::AccessPoint access_point) {
-#if BUILDFLAG(ENABLE_DICE_SUPPORT)
-  if (SigninViewController* signin_controller =
-          signin_view_controller_getter_.Run()) {
-    signin_controller->ShowDiceAddAccountTab(access_point, std::string());
+  if (SigninViewController* controller = signin_view_controller_getter_.Run()) {
+    controller->ShowDiceAddAccountTab(access_point, std::string());
   }
-#endif  // BUILDFLAG(ENABLE_DICE_SUPPORT)
 }
 
 void AccountStorageAuthHelper::OnOptInReauthCompleted(
diff --git a/chrome/browser/ui/passwords/account_storage_auth_helper.h b/chrome/browser/ui/passwords/account_storage_auth_helper.h
index 42cde5c..870785f 100644
--- a/chrome/browser/ui/passwords/account_storage_auth_helper.h
+++ b/chrome/browser/ui/passwords/account_storage_auth_helper.h
@@ -16,6 +16,7 @@
 
 namespace signin {
 enum class ReauthResult;
+class IdentityManager;
 }
 
 namespace signin_metrics {
@@ -23,15 +24,21 @@
 }
 
 class SigninViewController;
-class Profile;
 
 // Responsible for triggering authentication flows related to the passwords
 // account storage. Used only by desktop.
 class AccountStorageAuthHelper {
  public:
+  // |identity_manager| can be null (e.g. in incognito).
+  // |password_feature_manager| must be non-null and outlive this object.
+  // |signin_view_controller_getter| is passed rather than SigninViewController
+  // because the controller is per window, while this helper is per tab. It
+  // may return null.
   AccountStorageAuthHelper(
-      Profile* profile,
-      password_manager::PasswordFeatureManager* password_feature_manager);
+      signin::IdentityManager* identity_manager,
+      password_manager::PasswordFeatureManager* password_feature_manager,
+      base::RepeatingCallback<SigninViewController*()>
+          signin_view_controller_getter);
   ~AccountStorageAuthHelper();
 
   AccountStorageAuthHelper(const AccountStorageAuthHelper&) = delete;
@@ -51,12 +58,6 @@
   // metrics recording and represents where the sign-in was triggered.
   void TriggerSignIn(signin_metrics::AccessPoint access_point);
 
-  void SetSigninViewControllerGetterForTesting(
-      base::RepeatingCallback<SigninViewController*()>
-          signin_view_controller_getter) {
-    signin_view_controller_getter_ = std::move(signin_view_controller_getter);
-  }
-
  private:
   void OnOptInReauthCompleted(
       base::OnceCallback<
@@ -64,11 +65,11 @@
           reauth_callback,
       signin::ReauthResult result);
 
-  Profile* const profile_;
+  signin::IdentityManager* const identity_manager_;
 
   password_manager::PasswordFeatureManager* const password_feature_manager_;
 
-  base::RepeatingCallback<SigninViewController*()>
+  const base::RepeatingCallback<SigninViewController*()>
       signin_view_controller_getter_;
 
   // Aborts ongoing reauths if AccountStorageAuthHelper gets destroyed.
diff --git a/chrome/browser/ui/passwords/account_storage_auth_helper_unittest.cc b/chrome/browser/ui/passwords/account_storage_auth_helper_unittest.cc
index dcc02dc..ad0ff10 100644
--- a/chrome/browser/ui/passwords/account_storage_auth_helper_unittest.cc
+++ b/chrome/browser/ui/passwords/account_storage_auth_helper_unittest.cc
@@ -8,16 +8,14 @@
 
 #include "base/callback.h"
 #include "base/callback_helpers.h"
+#include "base/test/bind.h"
+#include "base/test/task_environment.h"
 #include "build/build_config.h"
-#include "chrome/browser/signin/identity_manager_factory.h"
-#include "chrome/browser/signin/identity_test_environment_profile_adaptor.h"
 #include "chrome/browser/signin/reauth_result.h"
 #include "chrome/browser/ui/signin_view_controller.h"
-#include "chrome/test/base/testing_profile.h"
 #include "components/password_manager/core/browser/mock_password_feature_manager.h"
 #include "components/signin/public/base/signin_metrics.h"
-#include "components/signin/public/identity_manager/identity_test_utils.h"
-#include "content/public/test/browser_task_environment.h"
+#include "components/signin/public/identity_manager/identity_test_environment.h"
 #include "google_apis/gaia/core_account_id.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -52,47 +50,41 @@
 class AccountStorageAuthHelperTest : public ::testing::Test {
  public:
   AccountStorageAuthHelperTest()
-      : profile_(IdentityTestEnvironmentProfileAdaptor::
-                     CreateProfileForIdentityTestEnvironment()),
-        identity_test_env_adaptor_(profile_.get()),
-        auth_helper_(profile_.get(), &mock_password_feature_manager_) {
-    auth_helper_.SetSigninViewControllerGetterForTesting(base::BindRepeating(
-        [](SigninViewController* controller) { return controller; },
-        &mock_signin_view_controller_));
-  }
+      : auth_helper_(
+            identity_test_env_.identity_manager(),
+            &mock_password_feature_manager_,
+            base::BindLambdaForTesting([this]() -> SigninViewController* {
+              return &mock_signin_view_controller_;
+            })) {}
   ~AccountStorageAuthHelperTest() override = default;
 
-  signin::IdentityManager* GetIdentityManager() {
-    return IdentityManagerFactory::GetForProfile(profile_.get());
+  CoreAccountId MakeUnconsentedAccountAvailable() {
+    return identity_test_env_
+        .MakePrimaryAccountAvailable("alice@gmail.com",
+                                     signin::ConsentLevel::kSignin)
+        .account_id;
   }
 
  protected:
-  content::BrowserTaskEnvironment task_environment_;
-  std::unique_ptr<TestingProfile> profile_;
-  IdentityTestEnvironmentProfileAdaptor identity_test_env_adaptor_;
+  base::test::SingleThreadTaskEnvironment task_environment_;
+  signin::IdentityTestEnvironment identity_test_env_;
   password_manager::MockPasswordFeatureManager mock_password_feature_manager_;
   MockSigninViewController mock_signin_view_controller_;
   AccountStorageAuthHelper auth_helper_;
 };
 
 TEST_F(AccountStorageAuthHelperTest, ShouldTriggerReauthForPrimaryAccount) {
-  signin::MakePrimaryAccountAvailable(GetIdentityManager(), "alice@gmail.com",
-                                      signin::ConsentLevel::kSync);
+  CoreAccountId account_id = MakeUnconsentedAccountAvailable();
   EXPECT_CALL(mock_signin_view_controller_,
-              ShowReauthPrompt(GetIdentityManager()->GetPrimaryAccountId(
-                                   signin::ConsentLevel::kSync),
-                               kReauthAccessPoint, _));
+              ShowReauthPrompt(account_id, kReauthAccessPoint, _));
 
   auth_helper_.TriggerOptInReauth(kReauthAccessPoint, base::DoNothing());
 }
 
 TEST_F(AccountStorageAuthHelperTest, ShouldSetOptInOnSucessfulReauth) {
-  signin::MakePrimaryAccountAvailable(GetIdentityManager(), "alice@gmail.com",
-                                      signin::ConsentLevel::kSync);
+  CoreAccountId account_id = MakeUnconsentedAccountAvailable();
   EXPECT_CALL(mock_signin_view_controller_,
-              ShowReauthPrompt(GetIdentityManager()->GetPrimaryAccountId(
-                                   signin::ConsentLevel::kSync),
-                               kReauthAccessPoint, _))
+              ShowReauthPrompt(account_id, kReauthAccessPoint, _))
       .WillOnce([](auto, auto,
                    base::OnceCallback<void(signin::ReauthResult)> callback) {
         std::move(callback).Run(signin::ReauthResult::kSuccess);
@@ -104,12 +96,9 @@
 }
 
 TEST_F(AccountStorageAuthHelperTest, ShouldNotSetOptInOnFailedReauth) {
-  signin::MakePrimaryAccountAvailable(GetIdentityManager(), "alice@gmail.com",
-                                      signin::ConsentLevel::kSync);
+  CoreAccountId account_id = MakeUnconsentedAccountAvailable();
   EXPECT_CALL(mock_signin_view_controller_,
-              ShowReauthPrompt(GetIdentityManager()->GetPrimaryAccountId(
-                                   signin::ConsentLevel::kSync),
-                               kReauthAccessPoint, _))
+              ShowReauthPrompt(account_id, kReauthAccessPoint, _))
       .WillOnce([](auto, auto,
                    base::OnceCallback<void(signin::ReauthResult)> callback) {
         std::move(callback).Run(signin::ReauthResult::kCancelled);
@@ -121,10 +110,10 @@
 }
 
 TEST_F(AccountStorageAuthHelperTest, ShouldTriggerSigninIfDiceEnabled) {
-  const signin_metrics::AccessPoint kAcessPoint =
+  const signin_metrics::AccessPoint kAccessPoint =
       signin_metrics::AccessPoint::ACCESS_POINT_AUTOFILL_DROPDOWN;
   EXPECT_CALL(mock_signin_view_controller_,
-              ShowDiceAddAccountTab(kAcessPoint, _));
+              ShowDiceAddAccountTab(kAccessPoint, _));
 
-  auth_helper_.TriggerSignIn(kAcessPoint);
+  auth_helper_.TriggerSignIn(kAccessPoint);
 }
diff --git a/chrome/browser/ui/task_manager/task_manager_columns.cc b/chrome/browser/ui/task_manager/task_manager_columns.cc
index 73377af..4fa4c767 100644
--- a/chrome/browser/ui/task_manager/task_manager_columns.cc
+++ b/chrome/browser/ui/task_manager/task_manager_columns.cc
@@ -29,7 +29,7 @@
      200, true, true, false},
     {IDS_TASK_MANAGER_MEM_FOOTPRINT_COLUMN, ui::TableColumn::RIGHT, -1, 0,
      base::size("800 MiB") * kCharWidth,
-     base::size("Memory Footprint") * 1.5 * kCharWidth, true, false, true},
+     base::size("Memory Footprint") * kCharWidth * 3 / 2, true, false, true},
 
 #if BUILDFLAG(IS_CHROMEOS_ASH)
     {IDS_TASK_MANAGER_SWAPPED_MEM_COLUMN, ui::TableColumn::RIGHT, -1, 0,
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
index 5ef8b44..d04a7309 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
@@ -7,7 +7,6 @@
 #include <stddef.h>
 #include <utility>
 
-#include "apps/ui/views/app_window_frame_view.h"
 #include "base/cxx17_backports.h"
 #include "base/no_destructor.h"
 #include "build/build_config.h"
diff --git a/chrome/browser/ui/views/frame/browser_view.cc b/chrome/browser/ui/views/frame/browser_view.cc
index d6090ad..43f280b0 100644
--- a/chrome/browser/ui/views/frame/browser_view.cc
+++ b/chrome/browser/ui/views/frame/browser_view.cc
@@ -106,6 +106,7 @@
 #include "chrome/browser/ui/views/fullscreen_control/fullscreen_control_host.h"
 #include "chrome/browser/ui/views/global_media_controls/media_toolbar_button_view.h"
 #include "chrome/browser/ui/views/hats/hats_next_web_dialog.h"
+#include "chrome/browser/ui/views/incognito_clear_browsing_data_dialog.h"
 #include "chrome/browser/ui/views/infobars/infobar_container_view.h"
 #include "chrome/browser/ui/views/location_bar/intent_picker_view.h"
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
@@ -3558,6 +3559,14 @@
   );
 }
 
+void BrowserView::ShowIncognitoClearBrowsingDataDialog() {
+  IncognitoClearBrowsingDataDialog::Show(
+      static_cast<views::View*>(BrowserView::GetBrowserViewForBrowser(browser())
+                                    ->toolbar_button_provider()
+                                    ->GetAvatarToolbarButton()),
+      browser()->profile());
+}
+
 ExclusiveAccessContext* BrowserView::GetExclusiveAccessContext() {
   return this;
 }
diff --git a/chrome/browser/ui/views/frame/browser_view.h b/chrome/browser/ui/views/frame/browser_view.h
index 25b8b82..90b67ca 100644
--- a/chrome/browser/ui/views/frame/browser_view.h
+++ b/chrome/browser/ui/views/frame/browser_view.h
@@ -517,6 +517,8 @@
   void ShowInProductHelpPromo(InProductHelpFeature iph_feature) override;
   FeaturePromoController* GetFeaturePromoController() override;
 
+  void ShowIncognitoClearBrowsingDataDialog() override;
+
   // TabStripModelObserver:
   void OnTabStripModelChanged(
       TabStripModel* tab_strip_model,
diff --git a/chrome/browser/ui/views/incognito_clear_browsing_data_dialog.cc b/chrome/browser/ui/views/incognito_clear_browsing_data_dialog.cc
new file mode 100644
index 0000000..da9900d3
--- /dev/null
+++ b/chrome/browser/ui/views/incognito_clear_browsing_data_dialog.cc
@@ -0,0 +1,120 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/views/incognito_clear_browsing_data_dialog.h"
+
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/views/chrome_typography.h"
+#include "chrome/browser/ui/views/frame/browser_view.h"
+#include "chrome/grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/metadata/metadata_impl_macros.h"
+#include "ui/strings/grit/ui_strings.h"
+#include "ui/views/bubble/bubble_frame_view.h"
+#include "ui/views/layout/flex_layout.h"
+#include "ui/views/layout/layout_provider.h"
+
+namespace {
+IncognitoClearBrowsingDataDialog* g_incognito_cbd_dialog = nullptr;
+}  // namespace
+
+// static
+void IncognitoClearBrowsingDataDialog::Show(views::View* anchor_view,
+                                            Profile* incognito_profile) {
+  g_incognito_cbd_dialog =
+      new IncognitoClearBrowsingDataDialog(anchor_view, incognito_profile);
+  views::Widget* const widget =
+      BubbleDialogDelegateView::CreateBubble(g_incognito_cbd_dialog);
+  widget->Show();
+}
+
+// static
+bool IncognitoClearBrowsingDataDialog::IsShowing() {
+  return g_incognito_cbd_dialog != nullptr;
+}
+
+// static
+void IncognitoClearBrowsingDataDialog::CloseDialog() {
+  if (IsShowing())
+    g_incognito_cbd_dialog->GetWidget()->Close();
+}
+
+// static
+IncognitoClearBrowsingDataDialog* IncognitoClearBrowsingDataDialog::
+    GetIncognitoClearBrowsingDataDialogForTesting() {
+  return g_incognito_cbd_dialog;
+}
+
+void IncognitoClearBrowsingDataDialog::SetDestructorCallbackForTesting(
+    base::OnceClosure callback) {
+  destructor_callback_ = std::move(callback);
+}
+
+IncognitoClearBrowsingDataDialog::~IncognitoClearBrowsingDataDialog() {
+  g_incognito_cbd_dialog = nullptr;
+  std::move(destructor_callback_).Run();
+}
+
+IncognitoClearBrowsingDataDialog::IncognitoClearBrowsingDataDialog(
+    views::View* anchor_view,
+    Profile* incognito_profile)
+    : BubbleDialogDelegateView(anchor_view, views::BubbleBorder::TOP_RIGHT),
+      incognito_profile_(incognito_profile) {
+  DCHECK(incognito_profile_);
+  DCHECK(incognito_profile_->IsIncognitoProfile());
+  SetButtons(ui::DIALOG_BUTTON_NONE);
+  SetShowCloseButton(true);
+  SetLayoutManager(std::make_unique<views::FlexLayout>())
+      ->SetOrientation(views::LayoutOrientation::kVertical);
+  set_fixed_width(views::LayoutProvider::Get()->GetDistanceMetric(
+      views::DISTANCE_BUBBLE_PREFERRED_WIDTH));
+
+  AddChildView(views::Builder<views::Label>()
+                   .SetText(l10n_util::GetStringUTF16(
+                       IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_PRIMARY_TEXT))
+                   .SetFontList(views::style::GetFont(
+                       views::style::CONTEXT_LABEL, STYLE_EMPHASIZED))
+                   .SetHorizontalAlignment(gfx::ALIGN_LEFT)
+                   .Build());
+
+  AddChildView(
+      views::Builder<views::Label>()
+          .SetText(l10n_util::GetStringUTF16(
+              IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_SECONDARY_TEXT))
+          .SetFontList(views::style::GetFont(views::style::CONTEXT_LABEL,
+                                             views::style::STYLE_SECONDARY))
+          .SetHorizontalAlignment(gfx::ALIGN_LEFT)
+          .Build());
+
+  SetButtons(ui::DIALOG_BUTTON_OK | ui::DIALOG_BUTTON_CANCEL);
+  SetButtonLabel(
+      ui::DIALOG_BUTTON_OK,
+      l10n_util::GetStringUTF16(
+          IDS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_CLOSE_WINDOWS_BUTTON));
+
+  SetAcceptCallback(base::BindOnce(
+      &IncognitoClearBrowsingDataDialog::OnCloseWindowsButtonClicked,
+      base::Unretained(this)));
+  SetCancelCallback(
+      base::BindOnce(&IncognitoClearBrowsingDataDialog::OnCancelButtonClicked,
+                     base::Unretained(this)));
+}
+
+void IncognitoClearBrowsingDataDialog::OnCloseWindowsButtonClicked() {
+  // Skipping before-unload trigger to give incognito mode users a chance to
+  // quickly close all incognito windows without needing to confirm closing the
+  // open forms.
+  BrowserList::CloseAllBrowsersWithIncognitoProfile(
+      incognito_profile_, base::DoNothing(), base::DoNothing(),
+      /*skip_beforeunload=*/true);
+}
+
+void IncognitoClearBrowsingDataDialog::OnCancelButtonClicked() {
+  CloseDialog();
+}
+
+BEGIN_METADATA(IncognitoClearBrowsingDataDialog,
+               views::BubbleDialogDelegateView)
+END_METADATA
diff --git a/chrome/browser/ui/views/incognito_clear_browsing_data_dialog.h b/chrome/browser/ui/views/incognito_clear_browsing_data_dialog.h
new file mode 100644
index 0000000..0a59dea
--- /dev/null
+++ b/chrome/browser/ui/views/incognito_clear_browsing_data_dialog.h
@@ -0,0 +1,52 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_H_
+#define CHROME_BROWSER_UI_VIEWS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_H_
+
+#include "base/callback.h"
+#include "ui/base/metadata/metadata_header_macros.h"
+#include "ui/views/bubble/bubble_dialog_delegate_view.h"
+
+class Profile;
+
+namespace views {
+class View;
+}  // namespace views
+
+class IncognitoClearBrowsingDataDialog
+    : public views::BubbleDialogDelegateView {
+ public:
+  METADATA_HEADER(IncognitoClearBrowsingDataDialog);
+
+  static void Show(views::View* anchor_view, Profile* incognito_profile);
+  static bool IsShowing();
+
+  // testing
+  static IncognitoClearBrowsingDataDialog*
+  GetIncognitoClearBrowsingDataDialogForTesting();
+  void SetDestructorCallbackForTesting(base::OnceClosure callback);
+
+  IncognitoClearBrowsingDataDialog(
+      const IncognitoClearBrowsingDataDialog& other) = delete;
+  IncognitoClearBrowsingDataDialog& operator=(
+      const IncognitoClearBrowsingDataDialog& other) = delete;
+  ~IncognitoClearBrowsingDataDialog() override;
+
+ private:
+  explicit IncognitoClearBrowsingDataDialog(views::View* anchor_view,
+                                            Profile* incognito_profile);
+
+  static void CloseDialog();
+
+  // Helper methods to add functionality to the button.
+  void OnCloseWindowsButtonClicked();
+  void OnCancelButtonClicked();
+
+  Profile* incognito_profile_;
+
+  base::OnceClosure destructor_callback_ = base::DoNothing();
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_INCOGNITO_CLEAR_BROWSING_DATA_DIALOG_H_
diff --git a/chrome/browser/ui/views/incognito_clear_browsing_data_dialog_browsertest.cc b/chrome/browser/ui/views/incognito_clear_browsing_data_dialog_browsertest.cc
new file mode 100644
index 0000000..6e0fdc17f
--- /dev/null
+++ b/chrome/browser/ui/views/incognito_clear_browsing_data_dialog_browsertest.cc
@@ -0,0 +1,95 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/run_loop.h"
+#include "base/test/bind.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/views/frame/browser_view.h"
+#include "chrome/browser/ui/views/frame/toolbar_button_provider.h"
+#include "chrome/browser/ui/views/incognito_clear_browsing_data_dialog.h"
+#include "chrome/browser/ui/views/profiles/avatar_toolbar_button.h"
+#include "chrome/browser/ui/views/toolbar/toolbar_view.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/test/browser_test.h"
+#include "ui/views/controls/button/label_button.h"
+
+class IncognitoClearBrowsingDataDialogBrowserTest
+    : public InProcessBrowserTest {
+ public:
+  void OpenDialog() {
+    incognito_browser_ = CreateIncognitoBrowser(browser()->profile());
+    views::View* view = static_cast<views::View*>(
+        BrowserView::GetBrowserViewForBrowser(incognito_browser_)
+            ->toolbar_button_provider()
+            ->GetAvatarToolbarButton());
+    IncognitoClearBrowsingDataDialog::Show(view, incognito_browser_->profile());
+    EXPECT_TRUE(IncognitoClearBrowsingDataDialog::IsShowing());
+  }
+
+  Browser* GetIncognitoBrowser() { return incognito_browser_; }
+
+  IncognitoClearBrowsingDataDialog* GetDialogView() {
+    return IncognitoClearBrowsingDataDialog::
+        GetIncognitoClearBrowsingDataDialogForTesting();
+  }
+
+ private:
+  Browser* incognito_browser_ = nullptr;
+};
+
+IN_PROC_BROWSER_TEST_F(IncognitoClearBrowsingDataDialogBrowserTest,
+                       TestDialogIsShown) {
+  OpenDialog();
+  auto* incognito_cbd_dialog_view = GetDialogView();
+
+  ASSERT_TRUE(IncognitoClearBrowsingDataDialog::IsShowing());
+  ASSERT_EQ(ui::DIALOG_BUTTON_OK | ui::DIALOG_BUTTON_CANCEL,
+            incognito_cbd_dialog_view->GetDialogButtons());
+  ASSERT_TRUE(
+      incognito_cbd_dialog_view->IsDialogButtonEnabled(ui::DIALOG_BUTTON_OK));
+  ASSERT_TRUE(incognito_cbd_dialog_view->IsDialogButtonEnabled(
+      ui::DIALOG_BUTTON_CANCEL));
+}
+
+IN_PROC_BROWSER_TEST_F(IncognitoClearBrowsingDataDialogBrowserTest,
+                       TestCloseWindowsButton) {
+  OpenDialog();
+
+  GetDialogView()->AcceptDialog();
+  ui_test_utils::WaitForBrowserToClose(GetIncognitoBrowser());
+  ASSERT_EQ(0UL, BrowserList::GetIncognitoBrowserCount());
+  ASSERT_TRUE(GetDialogView() == nullptr);
+}
+
+IN_PROC_BROWSER_TEST_F(IncognitoClearBrowsingDataDialogBrowserTest,
+                       TestCancelButton) {
+  OpenDialog();
+
+  base::RunLoop run_loop;
+  GetDialogView()->SetDestructorCallbackForTesting(
+      base::BindLambdaForTesting([&]() {
+        run_loop.Quit();
+        ASSERT_FALSE(IncognitoClearBrowsingDataDialog::IsShowing());
+        ASSERT_TRUE(GetDialogView() == nullptr);
+      }));
+
+  GetDialogView()->Cancel();
+  run_loop.Run();
+}
+
+IN_PROC_BROWSER_TEST_F(IncognitoClearBrowsingDataDialogBrowserTest,
+                       TestBrowserCloseEventClosesDialogFirst) {
+  OpenDialog();
+
+  GetDialogView()->SetDestructorCallbackForTesting(
+      base::BindLambdaForTesting([&]() {
+        ASSERT_FALSE(IncognitoClearBrowsingDataDialog::IsShowing());
+        ASSERT_TRUE(GetDialogView() == nullptr);
+        ASSERT_TRUE(BrowserList::GetIncognitoBrowserCount() > 0);
+      }));
+
+  CloseBrowserSynchronously(GetIncognitoBrowser());
+}
diff --git a/chrome/browser/ui/views/infobars/infobar_view.cc b/chrome/browser/ui/views/infobars/infobar_view.cc
index d6ddde37..56bb5b4 100644
--- a/chrome/browser/ui/views/infobars/infobar_view.cc
+++ b/chrome/browser/ui/views/infobars/infobar_view.cc
@@ -221,9 +221,9 @@
   if (GetDrawSeparator()) {
     const SkColor color =
         GetColor(ThemeProperties::COLOR_TOOLBAR_CONTENT_AREA_SEPARATOR);
-    const gfx::Rect local_bounds = GetLocalBounds();
-    canvas->DrawSharpLine({local_bounds.x(), local_bounds.y()},
-                          {local_bounds.right(), local_bounds.y()}, color);
+    const gfx::RectF local_bounds(GetLocalBounds());
+    canvas->DrawSharpLine(local_bounds.origin(), local_bounds.top_right(),
+                          color);
   }
 }
 
diff --git a/chrome/browser/ui/views/profiles/avatar_toolbar_button.cc b/chrome/browser/ui/views/profiles/avatar_toolbar_button.cc
index ac5f71b0..2421a64 100644
--- a/chrome/browser/ui/views/profiles/avatar_toolbar_button.cc
+++ b/chrome/browser/ui/views/profiles/avatar_toolbar_button.cc
@@ -284,17 +284,17 @@
     case State::kAnimatedUserIdentity:
       return delegate_->GetShortProfileName();
     // kSyncPaused is just a type of sync error with different color, but should
-    // still use sync_ui_util::GetAvatarSyncErrorDescription() as tooltip.
+    // still use GetAvatarSyncErrorDescription() as tooltip.
     case State::kSyncError:
     case State::kSyncPaused: {
-      absl::optional<sync_ui_util::AvatarSyncErrorType> error =
+      absl::optional<AvatarSyncErrorType> error =
           delegate_->GetAvatarSyncErrorType();
       DCHECK(error);
       return l10n_util::GetStringFUTF16(
           IDS_AVATAR_BUTTON_SYNC_ERROR_TOOLTIP,
           delegate_->GetShortProfileName(),
-          sync_ui_util::GetAvatarSyncErrorDescription(
-              *error, delegate_->IsSyncFeatureEnabled()));
+          GetAvatarSyncErrorDescription(*error,
+                                        delegate_->IsSyncFeatureEnabled()));
     }
     case State::kNormal:
       return delegate_->GetProfileName();
diff --git a/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.cc b/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.cc
index 8b181f5..465660b7 100644
--- a/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.cc
+++ b/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.cc
@@ -91,7 +91,7 @@
     Profile* profile)
     : avatar_toolbar_button_(button),
       profile_(profile),
-      last_avatar_error_(sync_ui_util::GetAvatarSyncErrorType(profile)) {
+      last_avatar_error_(::GetAvatarSyncErrorType(profile)) {
   profile_observation_.Observe(&GetProfileAttributesStorage());
 
   if (auto* sync_service = SyncServiceFactory::GetForProfile(profile_))
@@ -175,12 +175,12 @@
 
   // Show any existing sync errors (sync-the-feature or sync-the-transport).
   // |last_avatar_error_| should be checked here rather than
-  // sync_ui_util::GetAvatarSyncErrorType(), so the result agrees with
+  // ::GetAvatarSyncErrorType(), so the result agrees with
   // AvatarToolbarButtonDelegate::GetAvatarSyncErrorType().
   if (!last_avatar_error_)
     return AvatarToolbarButton::State::kNormal;
 
-  if (last_avatar_error_ == sync_ui_util::AUTH_ERROR &&
+  if (last_avatar_error_ == AvatarSyncErrorType::kAuthError &&
       AccountConsistencyModeManager::IsDiceEnabledForProfile(profile_)) {
     return AvatarToolbarButton::State::kSyncPaused;
   }
@@ -188,7 +188,7 @@
   return AvatarToolbarButton::State::kSyncError;
 }
 
-absl::optional<sync_ui_util::AvatarSyncErrorType>
+absl::optional<AvatarSyncErrorType>
 AvatarToolbarButtonDelegate::GetAvatarSyncErrorType() const {
   return last_avatar_error_;
 }
@@ -354,8 +354,8 @@
 }
 
 void AvatarToolbarButtonDelegate::OnStateChanged(syncer::SyncService*) {
-  const absl::optional<sync_ui_util::AvatarSyncErrorType> error =
-      sync_ui_util::GetAvatarSyncErrorType(profile_);
+  const absl::optional<AvatarSyncErrorType> error =
+      ::GetAvatarSyncErrorType(profile_);
   if (last_avatar_error_ == error)
     return;
 
diff --git a/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.h b/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.h
index 8ea4195..11e527e 100644
--- a/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.h
+++ b/chrome/browser/ui/views/profiles/avatar_toolbar_button_delegate.h
@@ -45,8 +45,7 @@
 
   AvatarToolbarButton::State GetState() const;
 
-  absl::optional<sync_ui_util::AvatarSyncErrorType> GetAvatarSyncErrorType()
-      const;
+  absl::optional<AvatarSyncErrorType> GetAvatarSyncErrorType() const;
 
   bool IsSyncFeatureEnabled() const;
 
@@ -139,7 +138,7 @@
 
   // Caches the value of the last error so the class can detect when it changes
   // and notify |avatar_toolbar_button_|.
-  absl::optional<sync_ui_util::AvatarSyncErrorType> last_avatar_error_;
+  absl::optional<AvatarSyncErrorType> last_avatar_error_;
 
   base::WeakPtrFactory<AvatarToolbarButtonDelegate> weak_ptr_factory_{this};
 
diff --git a/chrome/browser/ui/views/profiles/profile_menu_view.cc b/chrome/browser/ui/views/profiles/profile_menu_view.cc
index 5a5c2a3e..f3c9e8e 100644
--- a/chrome/browser/ui/views/profiles/profile_menu_view.cc
+++ b/chrome/browser/ui/views/profiles/profile_menu_view.cc
@@ -72,33 +72,34 @@
 
 // Helpers --------------------------------------------------------------------
 
-std::u16string GetSyncErrorButtonText(sync_ui_util::AvatarSyncErrorType error) {
+std::u16string GetSyncErrorButtonText(AvatarSyncErrorType error) {
   switch (error) {
-    case sync_ui_util::AUTH_ERROR:
-    case sync_ui_util::UNRECOVERABLE_ERROR:
+    case AvatarSyncErrorType::kAuthError:
+    case AvatarSyncErrorType::kUnrecoverableError:
       // The user was signed out. Offer them to sign in again.
       return l10n_util::GetStringUTF16(IDS_SYNC_ERROR_USER_MENU_SIGNIN_BUTTON);
-    case sync_ui_util::MANAGED_USER_UNRECOVERABLE_ERROR:
+    case AvatarSyncErrorType::kManagedUserUnrecoverableError:
       // As opposed to the corresponding error in an unmanaged account
-      // (sync_ui_util::UNRECOVERABLE_ERROR), sign-out hasn't happened here yet.
-      // The button directs to the sign-out confirmation dialog in settings.
+      // (AvatarSyncErrorType::kUnrecoverableError), sign-out hasn't happened
+      // here yet. The button directs to the sign-out confirmation dialog in
+      // settings.
       return l10n_util::GetStringUTF16(IDS_SYNC_ERROR_USER_MENU_SIGNOUT_BUTTON);
-    case sync_ui_util::UPGRADE_CLIENT_ERROR:
+    case AvatarSyncErrorType::kUpgradeClientError:
       return l10n_util::GetStringUTF16(IDS_SYNC_ERROR_USER_MENU_UPGRADE_BUTTON);
-    case sync_ui_util::PASSPHRASE_ERROR:
+    case AvatarSyncErrorType::kPassphraseError:
       return l10n_util::GetStringUTF16(
           IDS_SYNC_ERROR_USER_MENU_PASSPHRASE_BUTTON);
-    case sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_EVERYTHING_ERROR:
-    case sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR:
+    case AvatarSyncErrorType::kTrustedVaultKeyMissingForEverythingError:
+    case AvatarSyncErrorType::kTrustedVaultKeyMissingForPasswordsError:
       return l10n_util::GetStringUTF16(
           IDS_SYNC_ERROR_USER_MENU_RETRIEVE_KEYS_BUTTON);
-    case sync_ui_util::
-        TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_EVERYTHING_ERROR:
-    case sync_ui_util::
-        TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR:
+    case AvatarSyncErrorType::
+        kTrustedVaultRecoverabilityDegradedForEverythingError:
+    case AvatarSyncErrorType::
+        kTrustedVaultRecoverabilityDegradedForPasswordsError:
       return l10n_util::GetStringUTF16(
           IDS_SYNC_ERROR_USER_MENU_RECOVERABILITY_BUTTON);
-    case sync_ui_util::SETTINGS_UNCONFIRMED_ERROR:
+    case AvatarSyncErrorType::kSettingsUnconfirmedError:
       return l10n_util::GetStringUTF16(
           IDS_SYNC_ERROR_USER_MENU_CONFIRM_SYNC_SETTINGS_BUTTON);
   }
@@ -131,8 +132,7 @@
 }
 
 bool IsSyncPaused(Profile* profile) {
-  return sync_ui_util::GetAvatarSyncErrorType(profile) ==
-         sync_ui_util::AUTH_ERROR;
+  return GetAvatarSyncErrorType(profile) == AvatarSyncErrorType::kAuthError;
 }
 
 // TODO(crbug.com/1125474): Replace IsGuest(profile) calls with
@@ -186,8 +186,7 @@
   if (profile->IsOffTheRecord())
     return gfx::ImageSkia();
 
-  absl::optional<sync_ui_util::AvatarSyncErrorType> error =
-      sync_ui_util::GetAvatarSyncErrorType(profile);
+  absl::optional<AvatarSyncErrorType> error = GetAvatarSyncErrorType(profile);
   if (!error) {
     // There's no error, so just show the sync on/off icon depending on whether
     // sync-the-feature is enabled.
@@ -201,7 +200,7 @@
   }
 
   ui::NativeTheme::ColorId color_id =
-      error == sync_ui_util::AUTH_ERROR
+      error == AvatarSyncErrorType::kAuthError
           ? ui::NativeTheme::kColorId_ProminentButtonColor
           : ui::NativeTheme::kColorId_AlertSeverityHigh;
   return ColoredImageForMenu(kSyncPausedCircleIcon,
@@ -282,8 +281,7 @@
   chrome::ShowSettingsSubPage(browser(), chrome::kSyncSetupSubPage);
 }
 
-void ProfileMenuView::OnSyncErrorButtonClicked(
-    sync_ui_util::AvatarSyncErrorType error) {
+void ProfileMenuView::OnSyncErrorButtonClicked(AvatarSyncErrorType error) {
 #if BUILDFLAG(IS_CHROMEOS_ASH)
   // On ChromeOS, sync errors are fixed by re-signing into the OS.
   chrome::AttemptUserExit();
@@ -294,10 +292,10 @@
 
   // The logic below must be consistent with GetSyncInfoForAvatarErrorType().
   switch (error) {
-    case sync_ui_util::MANAGED_USER_UNRECOVERABLE_ERROR:
+    case AvatarSyncErrorType::kManagedUserUnrecoverableError:
       chrome::ShowSettingsSubPage(browser(), chrome::kSignOutSubPage);
       break;
-    case sync_ui_util::UNRECOVERABLE_ERROR:
+    case AvatarSyncErrorType::kUnrecoverableError:
       // GetPrimaryAccountMutator() might return nullptr on some platforms.
       if (auto* account_mutator =
               IdentityManagerFactory::GetForProfile(browser()->profile())
@@ -311,28 +309,28 @@
             signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN);
       }
       break;
-    case sync_ui_util::AUTH_ERROR:
+    case AvatarSyncErrorType::kAuthError:
       Hide();
       browser()->signin_view_controller()->ShowSignin(
           profiles::BUBBLE_VIEW_MODE_GAIA_REAUTH,
           signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN);
       break;
-    case sync_ui_util::UPGRADE_CLIENT_ERROR:
+    case AvatarSyncErrorType::kUpgradeClientError:
       chrome::OpenUpdateChromeDialog(browser());
       break;
-    case sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_EVERYTHING_ERROR:
-    case sync_ui_util::TRUSTED_VAULT_KEY_MISSING_FOR_PASSWORDS_ERROR:
-      sync_ui_util::OpenTabForSyncKeyRetrieval(
+    case AvatarSyncErrorType::kTrustedVaultKeyMissingForEverythingError:
+    case AvatarSyncErrorType::kTrustedVaultKeyMissingForPasswordsError:
+      OpenTabForSyncKeyRetrieval(
           browser(), syncer::KeyRetrievalTriggerForUMA::kProfileMenu);
       break;
-    case sync_ui_util::
-        TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_EVERYTHING_ERROR:
-    case sync_ui_util::
-        TRUSTED_VAULT_RECOVERABILITY_DEGRADED_FOR_PASSWORDS_ERROR:
-      sync_ui_util::OpenTabForSyncKeyRecoverabilityDegraded(browser());
+    case AvatarSyncErrorType::
+        kTrustedVaultRecoverabilityDegradedForEverythingError:
+    case AvatarSyncErrorType::
+        kTrustedVaultRecoverabilityDegradedForPasswordsError:
+      OpenTabForSyncKeyRecoverabilityDegraded(browser());
       break;
-    case sync_ui_util::PASSPHRASE_ERROR:
-    case sync_ui_util::SETTINGS_UNCONFIRMED_ERROR:
+    case AvatarSyncErrorType::kPassphraseError:
+    case AvatarSyncErrorType::kSettingsUnconfirmedError:
       chrome::ShowSettingsSubPage(browser(), chrome::kSyncSetupSubPage);
       break;
   }
@@ -513,14 +511,13 @@
       identity_manager->HasPrimaryAccount(signin::ConsentLevel::kSync);
   // First, check for sync errors. They may exist even if sync-the-feature is
   // disabled and only sync-the-transport is running.
-  const absl::optional<sync_ui_util::AvatarSyncErrorType> error =
-      sync_ui_util::GetAvatarSyncErrorType(profile);
+  const absl::optional<AvatarSyncErrorType> error =
+      GetAvatarSyncErrorType(profile);
   if (error) {
     BuildSyncInfoWithCallToAction(
-        sync_ui_util::GetAvatarSyncErrorDescription(*error,
-                                                    is_sync_feature_enabled),
+        GetAvatarSyncErrorDescription(*error, is_sync_feature_enabled),
         GetSyncErrorButtonText(*error),
-        error == sync_ui_util::AUTH_ERROR
+        error == AvatarSyncErrorType::kAuthError
             ? ui::NativeTheme::kColorId_SyncInfoContainerPaused
             : ui::NativeTheme::kColorId_SyncInfoContainerError,
         base::BindRepeating(&ProfileMenuView::OnSyncErrorButtonClicked,
diff --git a/chrome/browser/ui/views/profiles/profile_menu_view.h b/chrome/browser/ui/views/profiles/profile_menu_view.h
index beb7d3d0..0420cba 100644
--- a/chrome/browser/ui/views/profiles/profile_menu_view.h
+++ b/chrome/browser/ui/views/profiles/profile_menu_view.h
@@ -60,7 +60,7 @@
   void OnGuestProfileButtonClicked();
   void OnExitProfileButtonClicked();
   void OnSyncSettingsButtonClicked();
-  void OnSyncErrorButtonClicked(sync_ui_util::AvatarSyncErrorType error);
+  void OnSyncErrorButtonClicked(AvatarSyncErrorType error);
   void OnSigninAccountButtonClicked(AccountInfo account);
   void OnCookiesClearedOnExitLinkClicked();
 #if !BUILDFLAG(IS_CHROMEOS_ASH)
diff --git a/chrome/browser/ui/views/user_education/feature_promo_bubble_view_unittest.cc b/chrome/browser/ui/views/user_education/feature_promo_bubble_view_unittest.cc
index ae61e43..c2ddcfc4 100644
--- a/chrome/browser/ui/views/user_education/feature_promo_bubble_view_unittest.cc
+++ b/chrome/browser/ui/views/user_education/feature_promo_bubble_view_unittest.cc
@@ -14,7 +14,6 @@
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/test_with_browser_view.h"
 #include "chrome/browser/ui/views/user_education/feature_promo_bubble_params.h"
-#include "chrome/test/chromedriver/chrome/ui_events.h"
 #include "chrome/test/data/grit/chrome_test_resources.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "ui/events/base_event_utils.h"
diff --git a/chrome/browser/ui/views/webauthn/ring_progress_bar.cc b/chrome/browser/ui/views/webauthn/ring_progress_bar.cc
index 6e6ea4b..48151ed 100644
--- a/chrome/browser/ui/views/webauthn/ring_progress_bar.cc
+++ b/chrome/browser/ui/views/webauthn/ring_progress_bar.cc
@@ -42,7 +42,7 @@
   gfx::Rect content_bounds = GetContentsBounds();
   // Draw the background ring that gets progressively filled.
   gfx::PointF center(content_bounds.width() / 2, content_bounds.height() / 2);
-  const double radius =
+  const float radius =
       (std::min(content_bounds.width(), content_bounds.height()) -
        kStrokeWidth) /
       2;
diff --git a/chrome/browser/ui/webui/chrome_url_data_manager_browsertest.cc b/chrome/browser/ui/webui/chrome_url_data_manager_browsertest.cc
index 8255590..e699724 100644
--- a/chrome/browser/ui/webui/chrome_url_data_manager_browsertest.cc
+++ b/chrome/browser/ui/webui/chrome_url_data_manager_browsertest.cc
@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <algorithm>
 #include <memory>
 
-#include "base/logging.h"
 #include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "base/test/scoped_feature_list.h"
@@ -175,6 +175,14 @@
     EXPECT_TRUE(console_observer.messages().empty());
   }
 
+  static std::string ParamInfoToString(
+      const ::testing::TestParamInfo<const char*>& info) {
+    std::string name(info.param);
+    std::replace_if(
+        name.begin(), name.end(), [](char c) { return !std::isalnum(c); }, '_');
+    return name;
+  }
+
  private:
   base::test::ScopedFeatureList feature_list_;
   policy::FakeBrowserDMTokenStorage fake_dm_token_storage_;
@@ -183,7 +191,6 @@
 // Verify that there's no Trusted Types violation in chrome://chrome-urls
 IN_PROC_BROWSER_TEST_P(ChromeURLDataManagerWebUITrustedTypesTest,
                        NoTrustedTypesViolation) {
-  LOG(INFO) << "Navigating to " << GetParam();
   CheckTrustedTypesViolation(GetParam());
 }
 
@@ -231,7 +238,8 @@
     "chrome://media-history",
     "chrome://media-internals",
     "chrome://media-router-internals",
-    "chrome://memory-internals",
+    // TODO(crbug.com/1217395): DCHECK failure
+    // "chrome://memory-internals",
     "chrome://net-export",
     "chrome://net-internals",
     "chrome://network-error",
@@ -333,6 +341,8 @@
 #endif
 };
 
-INSTANTIATE_TEST_SUITE_P(,
-                         ChromeURLDataManagerWebUITrustedTypesTest,
-                         ::testing::ValuesIn(kChromeUrls));
+INSTANTIATE_TEST_SUITE_P(
+    ,
+    ChromeURLDataManagerWebUITrustedTypesTest,
+    ::testing::ValuesIn(kChromeUrls),
+    ChromeURLDataManagerWebUITrustedTypesTest::ParamInfoToString);
diff --git a/chrome/browser/ui/webui/settings/people_handler.cc b/chrome/browser/ui/webui/settings/people_handler.cc
index c18f918..6949b11 100644
--- a/chrome/browser/ui/webui/settings/people_handler.cc
+++ b/chrome/browser/ui/webui/settings/people_handler.cc
@@ -147,21 +147,21 @@
     NOTREACHED();
 }
 
-std::string GetSyncErrorAction(sync_ui_util::ActionType action_type) {
+std::string GetSyncErrorAction(SyncStatusActionType action_type) {
   switch (action_type) {
-    case sync_ui_util::REAUTHENTICATE:
+    case SyncStatusActionType::kReauthenticate:
       return "reauthenticate";
-    case sync_ui_util::SIGNOUT_AND_SIGNIN:
+    case SyncStatusActionType::kSignoutAndSignin:
       return "signOutAndSignIn";
-    case sync_ui_util::UPGRADE_CLIENT:
+    case SyncStatusActionType::kUpgradeClient:
       return "upgradeClient";
-    case sync_ui_util::ENTER_PASSPHRASE:
+    case SyncStatusActionType::kEnterPassphrase:
       return "enterPassphrase";
-    case sync_ui_util::RETRIEVE_TRUSTED_VAULT_KEYS:
+    case SyncStatusActionType::kRetrieveTrustedVaultKeys:
       return "retrieveTrustedVaultKeys";
-    case sync_ui_util::CONFIRM_SYNC_SETTINGS:
+    case SyncStatusActionType::kConfirmSyncSettings:
       return "confirmSyncSettings";
-    case sync_ui_util::NO_ACTION:
+    case SyncStatusActionType::kNoAction:
       return "noAction";
   }
 
@@ -679,8 +679,8 @@
   if (!browser)
     return;
 
-  sync_ui_util::OpenTabForSyncKeyRetrieval(
-      browser, syncer::KeyRetrievalTriggerForUMA::kSettings);
+  OpenTabForSyncKeyRetrieval(browser,
+                             syncer::KeyRetrievalTriggerForUMA::kSettings);
 }
 
 void PeopleHandler::HandleGetSyncStatus(const base::ListValue* args) {
@@ -872,8 +872,7 @@
           !service->GetUserSettings()->IsFirstSetupComplete() &&
           identity_manager->HasPrimaryAccount(signin::ConsentLevel::kSync));
 
-  const sync_ui_util::StatusLabels status_labels =
-      sync_ui_util::GetStatusLabels(profile_);
+  const SyncStatusLabels status_labels = GetSyncStatusLabels(profile_);
   // TODO(crbug.com/1027467): Consider unifying some of the fields below to
   // avoid redundancy.
   sync_status->SetString("statusText",
@@ -881,12 +880,13 @@
   sync_status->SetString("statusActionText",
                          GetStringUTF16(status_labels.button_string_id));
   sync_status->SetBoolean(
-      "hasError", status_labels.message_type == sync_ui_util::SYNC_ERROR ||
-                      status_labels.message_type ==
-                          sync_ui_util::PASSWORDS_ONLY_SYNC_ERROR);
-  sync_status->SetBoolean(
-      "hasPasswordsOnlyError",
-      status_labels.message_type == sync_ui_util::PASSWORDS_ONLY_SYNC_ERROR);
+      "hasError",
+      status_labels.message_type == SyncStatusMessageType::kSyncError ||
+          status_labels.message_type ==
+              SyncStatusMessageType::kPasswordsOnlySyncError);
+  sync_status->SetBoolean("hasPasswordsOnlyError",
+                          status_labels.message_type ==
+                              SyncStatusMessageType::kPasswordsOnlySyncError);
   sync_status->SetString("statusAction",
                          GetSyncErrorAction(status_labels.action_type));
 
diff --git a/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc b/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
index 2ff9589..8cc67a5 100644
--- a/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
+++ b/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
@@ -342,7 +342,7 @@
   // If Sync is running, prevent it from being paused during the operation.
   // However, if Sync is in error, clearing cookies should pause it.
   if (!profile_->IsGuestSession() &&
-      sync_ui_util::GetStatus(profile_) == sync_ui_util::SYNCED) {
+      GetSyncStatusMessageType(profile_) == SyncStatusMessageType::kSynced) {
     // Settings can not be opened in incognito windows.
     DCHECK(!profile_->IsOffTheRecord());
     scoped_data_deletion = AccountReconcilorFactory::GetForProfile(profile_)
diff --git a/chrome/chrome_cleaner/os/disk_util.cc b/chrome/chrome_cleaner/os/disk_util.cc
index ef32d624..b7321e8 100644
--- a/chrome/chrome_cleaner/os/disk_util.cc
+++ b/chrome/chrome_cleaner/os/disk_util.cc
@@ -745,7 +745,7 @@
 }
 
 void GetProgramFilesFolders(std::set<base::FilePath>* folders) {
-  static const unsigned int kProgramFilesFolders[] = {
+  static const int kProgramFilesFolders[] = {
       // See the CSIDL_PROGRAM_FILES comment for rewrite_rules[].
       CsidlToPathServiceKey(CSIDL_PROGRAM_FILES),
       CsidlToPathServiceKey(CSIDL_PROGRAM_FILESX86),
@@ -753,7 +753,7 @@
   };
 
   DCHECK(folders);
-  for (unsigned int program_path : kProgramFilesFolders) {
+  for (int program_path : kProgramFilesFolders) {
     base::FilePath programfiles_folder;
     if (!base::PathService::Get(program_path, &programfiles_folder)) {
       LOG(ERROR) << "Can't get path from PathService.";
@@ -764,13 +764,14 @@
 }
 
 void GetProgramFilesCommonFolders(std::set<base::FilePath>* folders) {
-  static const unsigned int kCsidlProgramFileFolders[] = {
-      CSIDL_PROGRAM_FILES_COMMONX86, CSIDL_PROGRAM_FILES_COMMON,
+  static const int kCsidlProgramFileFolders[] = {
+      CSIDL_PROGRAM_FILES_COMMONX86,
+      CSIDL_PROGRAM_FILES_COMMON,
   };
   DCHECK(folders);
   // The CSIDL_PROGRAM_FILES_COMMON has no equivalent in the PathService. The
   // standard windows API is used to expand these paths.
-  for (unsigned int program_path : kCsidlProgramFileFolders) {
+  for (int program_path : kCsidlProgramFileFolders) {
     base::FilePath programfiles_folder =
         ExpandSpecialFolderPath(program_path, base::FilePath());
     if (programfiles_folder.empty()) {
@@ -793,14 +794,14 @@
 }
 
 void GetAllProgramFolders(std::set<base::FilePath>* folders) {
-  static const unsigned int kProgramFilesFolders[] = {
+  static const int kProgramFilesFolders[] = {
       CsidlToPathServiceKey(CSIDL_APPDATA),
       CsidlToPathServiceKey(CSIDL_LOCAL_APPDATA),
       CsidlToPathServiceKey(CSIDL_COMMON_APPDATA),
   };
 
   DCHECK(folders);
-  for (unsigned int program_path : kProgramFilesFolders) {
+  for (int program_path : kProgramFilesFolders) {
     base::FilePath programfiles_folder;
     if (!base::PathService::Get(program_path, &programfiles_folder)) {
       LOG(ERROR) << "Can't get path from PathService.";
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 78ea464c..1763adb 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -2761,15 +2761,13 @@
 // Boolean which indicate if signin interception is enabled.
 const char kSigninInterceptionEnabled[] = "signin.interception_enabled";
 
-// TODO(crbug.com/1179280): Remove OS_LINUX once https://crbug.com/1169547 is
-// done.
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
 // Boolean pref indicating whether the user is allowed to create secondary
 // profiles in Lacros browser. This is set by a policy, and the default value
 // for managed users is false.
 const char kLacrosSecondaryProfilesAllowed[] =
     "lacros_secondary_profiles_allowed";
-#endif  // defined(OS_LINUX) || defined(OS_CHROMEOS)
+#endif  // defined(OS_CHROMEOS)
 
 // Device identifier used by CryptAuth stored in local state. This ID is
 // combined with a user ID before being registered with the CryptAuth server,
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index 97e9802..8bf738f 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -933,11 +933,9 @@
 extern const char kBrowserShowProfilePickerOnStartup[];
 extern const char kSigninAllowedOnNextStartup[];
 extern const char kSigninInterceptionEnabled[];
-// TODO(crbug.com/1179280): Remove OS_LINUX once https://crbug.com/1169547 is
-// done.
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
 extern const char kLacrosSecondaryProfilesAllowed[];
-#endif  // defined(OS_LINUX) || defined(OS_CHROMEOS)
+#endif  // defined(OS_CHROMEOS)
 
 extern const char kCryptAuthDeviceId[];
 extern const char kCryptAuthInstanceId[];
diff --git a/chrome/install_static/test/scoped_install_details.cc b/chrome/install_static/test/scoped_install_details.cc
index 4ec5a1ad..7e70586 100644
--- a/chrome/install_static/test/scoped_install_details.cc
+++ b/chrome/install_static/test/scoped_install_details.cc
@@ -24,6 +24,12 @@
   previous_details_ = InstallDetails::Swap(std::move(details));
 }
 
+ScopedInstallDetails::ScopedInstallDetails(
+    std::unique_ptr<InstallDetails> details) {
+  these_details_ = details.get();
+  previous_details_ = InstallDetails::Swap(std::move(details));
+}
+
 ScopedInstallDetails::~ScopedInstallDetails() {
   // Swap the previous details back in, destroying the details created by
   // this scoped object.
diff --git a/chrome/install_static/test/scoped_install_details.h b/chrome/install_static/test/scoped_install_details.h
index 1fc54cd..dc31b48 100644
--- a/chrome/install_static/test/scoped_install_details.h
+++ b/chrome/install_static/test/scoped_install_details.h
@@ -23,6 +23,9 @@
   // TODO(grt): replace bool and int with more obvious types (e.g., enum).
   explicit ScopedInstallDetails(bool system_level = false,
                                 int install_mode_index = 0);
+
+  // Installs `details` as the current instance.
+  explicit ScopedInstallDetails(std::unique_ptr<InstallDetails> details);
   ~ScopedInstallDetails();
 
  private:
diff --git a/chrome/installer/mac/BUILD.gn b/chrome/installer/mac/BUILD.gn
index 9bdc599..a2d2713 100644
--- a/chrome/installer/mac/BUILD.gn
+++ b/chrome/installer/mac/BUILD.gn
@@ -134,7 +134,6 @@
 }
 
 script_test("mac_signing_tests") {
-  run_under_python2 = true
   script = "//testing/scripts/run_isolated_script_test.py"
 
   args = [ "@WrappedPath(" + rebase_path(
diff --git a/chrome/installer/mac/signing/pipeline.py b/chrome/installer/mac/signing/pipeline.py
index 1aa7a576..112945e76 100644
--- a/chrome/installer/mac/signing/pipeline.py
+++ b/chrome/installer/mac/signing/pipeline.py
@@ -10,7 +10,6 @@
 """
 
 import os.path
-import plistlib
 
 from . import commands, model, modification, notarize, parts, signing
 
@@ -201,13 +200,13 @@
     component_property_path = os.path.join(
         paths.work, '{}.plist'.format(dist_config.app_product))
 
-    plistlib.writePlist([{
+    commands.write_plist([{
         'BundleHasStrictIdentifier': True,
         'BundleIsRelocatable': False,
         'BundleIsVersionChecked': True,
         'BundleOverwriteAction': 'upgrade',
         'RootRelativeBundlePath': dist_config.app_dir
-    }], component_property_path)
+    }], component_property_path, 'xml1')
 
     return component_property_path
 
diff --git a/chrome/installer/mac/signing/pipeline_test.py b/chrome/installer/mac/signing/pipeline_test.py
index ef19662..c67caf17 100644
--- a/chrome/installer/mac/signing/pipeline_test.py
+++ b/chrome/installer/mac/signing/pipeline_test.py
@@ -35,7 +35,7 @@
     return {'LSMinimumSystemVersion': '10.19.7'}
 
 
-def _write_plist(d, p):
+def _write_plist(d, p, f):
     _write_plist.contents = d
 
 
@@ -335,7 +335,7 @@
 framework dir is 'App Product.app/Contents/Frameworks/Product Framework.framework'"""
         )
 
-    @mock.patch('signing.pipeline.plistlib.writePlist', _write_plist)
+    @mock.patch('signing.pipeline.commands.write_plist', _write_plist)
     def test_component_property_path(self, **kwargs):
         manager = mock.Mock()
         for attr in kwargs:
diff --git a/chrome/installer/setup/setup_install_details_unittest.cc b/chrome/installer/setup/setup_install_details_unittest.cc
index 758b3c9..8a7d8537 100644
--- a/chrome/installer/setup/setup_install_details_unittest.cc
+++ b/chrome/installer/setup/setup_install_details_unittest.cc
@@ -29,6 +29,10 @@
   install_static::InstallConstantIndex index;
   bool system_level;
   const wchar_t* channel;
+#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
+  bool is_extended_stable_channel;
+  const wchar_t* channel_override;
+#endif
 };
 
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
@@ -41,6 +45,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"",                           // Expect stable channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --channel=stable",  // User-level, primary mode.
@@ -49,6 +55,8 @@
         install_static::STABLE_INDEX,   // Expect primary mode.
         false,                          // Expect user-level.
         L"",                            // Expect stable channel.
+        false,                          // Expect not extended stable channel.
+        L"stable",                      // Expect the channel override.
     },
     {
         L"setup.exe --channel",        // User-level, primary mode.
@@ -57,6 +65,18 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"",                           // Expect stable channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
+    },
+    {
+        L"setup.exe --channel=extended",  // User-level, primary mode.
+        L"",                              // New install.
+        L"x64-stable",                    // Stable channel.
+        install_static::STABLE_INDEX,     // Expect primary mode.
+        false,                            // Expect user-level.
+        L"",                              // Expect stable channel.
+        true,                             // Expect extended stable channel.
+        L"extended",                      // Expect the channel override.
     },
     {
         L"setup.exe",                  // User-level, primary mode.
@@ -65,6 +85,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"",                           // Expect stable channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --channel=beta",   // User-level, primary mode, beta
@@ -74,6 +96,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"beta",                       // Expect beta channel.
+        false,                         // Expect not extended stable channel.
+        L"beta"                        // Expect the channel override.
     },
     {
         L"setup.exe --channel=beta",   // User-level, primary mode, beta
@@ -83,6 +107,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"beta",                       // Expect beta channel.
+        false,                         // Expect not extended stable channel.
+        L"beta",                       // Expect the channel override.
     },
     {
         L"setup.exe --channel=beta",   // User-level, primary mode, beta
@@ -92,6 +118,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"beta",                       // Expect beta channel.
+        false,                         // Expect not extended stable channel.
+        L"beta",                       // Expect the channel override.
     },
     {
         L"setup.exe --channel=dev",    // User-level, primary mode, dev channel.
@@ -100,6 +128,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"dev",                        // Expect dev channel.
+        false,                         // Expect not extended stable channel.
+        L"dev",                        // Expect the channel override.
     },
     {
         L"setup.exe --channel=dev",    // User-level, primary mode, dev channel.
@@ -108,6 +138,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"dev",                        // Expect dev channel.
+        false,                         // Expect not extended stable channel.
+        L"dev",                        // Expect the channel override.
     },
     {
         L"setup.exe --channel=dev",    // User-level, primary mode, dev channel.
@@ -116,6 +148,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"dev",                        // Expect dev channel.
+        false,                         // Expect not extended stable channel.
+        L"dev",                        // Expect the channel override.
     },
     {
         L"setup.exe --channel=bad",    // User-level, primary mode, bad channel.
@@ -124,6 +158,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"",                           // Expect stable channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --channel=bad",    // User-level, primary mode, bad channel.
@@ -132,6 +168,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"",                           // Expect stable channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe",                  // User-level, primary mode.
@@ -140,6 +178,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"beta",                       // Expect beta channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --channel=dev",    // User-level, primary mode.
@@ -148,6 +188,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         false,                         // Expect user-level.
         L"dev",                        // Expect dev channel.
+        false,                         // Expect not extended stable channel.
+        L"dev",                        // Expect the channel override.
     },
     {
         L"setup.exe --chrome-beta",  // User-level, secondary SxS beta mode.
@@ -156,6 +198,8 @@
         install_static::BETA_INDEX,  // Expect SxS beta mode.
         false,                       // Expect user-level.
         L"beta",                     // Expect beta channel.
+        false,                       // Expect not extended stable channel.
+        L"",                         // Expect no channel override.
     },
     {
         L"setup.exe --chrome-beta --channel=dev",  // User-level, secondary SxS
@@ -165,6 +209,8 @@
         install_static::BETA_INDEX,                // Expect SxS beta mode.
         false,                                     // Expect user-level.
         L"beta",                                   // Expect beta channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --chrome-beta --channel=dev",  // User-level, secondary SxS
@@ -174,6 +220,8 @@
         install_static::BETA_INDEX,                // Expect SxS beta mode.
         false,                                     // Expect user-level.
         L"beta",                                   // Expect beta channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --chrome-beta",    // User-level, secondary SxS beta mode.
@@ -182,6 +230,8 @@
         install_static::BETA_INDEX,    // Expect SxS beta mode.
         false,                         // Expect user-level.
         L"beta",                       // Expect beta channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --chrome-dev",  // User-level, secondary SxS dev mode.
@@ -190,6 +240,8 @@
         install_static::DEV_INDEX,  // Expect SxS dev mode.
         false,                      // Expect user-level.
         L"dev",                     // Expect dev channel.
+        false,                      // Expect not extended stable channel.
+        L"",                        // Expect no channel override.
     },
     {
         L"setup.exe --chrome-dev --channel=beta",  // User-level, secondary SxS
@@ -199,6 +251,8 @@
         install_static::DEV_INDEX,                 // Expect SxS dev mode.
         false,                                     // Expect user-level.
         L"dev",                                    // Expect dev channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --chrome-dev --channel",  // User-level, secondary SxS
@@ -208,6 +262,8 @@
         install_static::DEV_INDEX,            // Expect SxS dev mode.
         false,                                // Expect user-level.
         L"dev",                               // Expect dev channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --chrome-dev",    // User-level, secondary SxS dev mode.
@@ -216,6 +272,8 @@
         install_static::DEV_INDEX,    // Expect SxS dev mode.
         false,                        // Expect user-level.
         L"dev",                       // Expect dev channel.
+        false,                        // Expect not extended stable channel.
+        L"",                          // Expect no channel override.
     },
     {
         L"setup.exe --chrome-sxs",     // User-level, secondary SxS canary mode.
@@ -224,6 +282,8 @@
         install_static::CANARY_INDEX,  // Expect SxS canary mode.
         false,                         // Expect user-level.
         L"canary",                     // Expect canary channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --chrome-sxs --channel=dev",  // User-level, secondary SxS
@@ -233,6 +293,8 @@
         install_static::CANARY_INDEX,             // Expect SxS canary mode.
         false,                                    // Expect user-level.
         L"canary",                                // Expect canary channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --chrome-sxs --channel",  // User-level, secondary SxS
@@ -242,6 +304,8 @@
         install_static::CANARY_INDEX,         // Expect SxS canary mode.
         false,                                // Expect user-level.
         L"canary",                            // Expect canary channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --chrome-sxs",     // User-level, secondary SxS canary mode.
@@ -250,6 +314,8 @@
         install_static::CANARY_INDEX,  // Expect SxS canary mode.
         false,                         // Expect user-level.
         L"canary",                     // Expect canary channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     // System-level test cases.
     {
@@ -259,6 +325,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         true,                          // Expect system-level.
         L"",                           // Expect stable channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --channel=beta --system-level",  // System-level, primary
@@ -268,6 +336,8 @@
         install_static::STABLE_INDEX,                // Expect primary mode.
         true,                                        // Expect system-level.
         L"beta",                                     // Expect beta channel.
+        false,    // Expect not extended stable channel.
+        L"beta",  // Expect the channel override.
     },
     {
         L"setup.exe --channel=beta --system-level",  // System-level, primary
@@ -277,6 +347,8 @@
         install_static::STABLE_INDEX,   // Expect primary mode.
         true,                           // Expect system-level.
         L"beta",                        // Expect beta channel.
+        false,                          // Expect not extended stable channel.
+        L"beta",                        // Expect the channel override.
     },
     {
         L"setup.exe --channel=dev --system-level",  // System-level, primary
@@ -286,6 +358,8 @@
         install_static::STABLE_INDEX,               // Expect primary mode.
         true,                                       // Expect system-level.
         L"dev",                                     // Expect dev channel.
+        false,   // Expect not extended stable channel.
+        L"dev",  // Expect the channel override.
     },
     {
         L"setup.exe --channel=dev --system-level",  // System-level, primary
@@ -295,6 +369,8 @@
         install_static::STABLE_INDEX,   // Expect primary mode.
         true,                           // Expect system-level.
         L"dev",                         // Expect dev channel.
+        false,                          // Expect not extended stable channel.
+        L"dev",                         // Expect the channel override.
     },
     {
         L"setup.exe --channel=bad --system-level",  // System-level, primary
@@ -304,6 +380,8 @@
         install_static::STABLE_INDEX,               // Expect primary mode.
         true,                                       // Expect system-level.
         L"",                                        // Expect stable channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --channel=bad --system-level",  // System-level, primary
@@ -313,6 +391,8 @@
         install_static::STABLE_INDEX,   // Expect primary mode.
         true,                           // Expect system-level.
         L"",                            // Expect stable channel.
+        false,                          // Expect not extended stable channel.
+        L"",                            // Expect no channel override.
     },
     {
         L"setup.exe --system-level",    // System-level, primary mode.
@@ -321,6 +401,8 @@
         install_static::STABLE_INDEX,   // Expect primary mode.
         true,                           // Expect system-level.
         L"",                            // Expect stable channel.
+        false,                          // Expect not extended stable channel.
+        L"",                            // Expect no channel override.
     },
     {
         L"setup.exe --system-level",   // System-level, primary mode.
@@ -329,6 +411,8 @@
         install_static::STABLE_INDEX,  // Expect primary mode.
         true,                          // Expect system-level.
         L"beta",                       // Expect beta channel.
+        false,                         // Expect not extended stable channel.
+        L"",                           // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-beta",  // User-level, secondary SxS
@@ -338,6 +422,8 @@
         install_static::BETA_INDEX,                 // Expect SxS beta mode.
         true,                                       // Expect user-level.
         L"beta",                                    // Expect beta channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-beta",  // User-level, secondary SxS
@@ -347,6 +433,8 @@
         install_static::BETA_INDEX,                   // Expect SxS beta mode.
         true,                                         // Expect user-level.
         L"beta",                                      // Expect beta channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-dev",  // User-level, secondary SxS
@@ -356,6 +444,8 @@
         install_static::DEV_INDEX,                 // Expect SxS dev mode.
         true,                                      // Expect user-level.
         L"dev",                                    // Expect dev channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-dev",  // User-level, secondary SxS
@@ -365,6 +455,8 @@
         install_static::DEV_INDEX,                   // Expect SxS dev mode.
         true,                                        // Expect user-level.
         L"dev",                                      // Expect dev channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-beta "
@@ -374,6 +466,8 @@
         install_static::BETA_INDEX,  // Expect SxS beta mode.
         true,                        // Expect user-level.
         L"beta",                     // Expect beta channel.
+        false,                       // Expect not extended stable channel.
+        L"",                         // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-beta "
@@ -383,6 +477,8 @@
         install_static::BETA_INDEX,                   // Expect SxS beta mode.
         true,                                         // Expect user-level.
         L"beta",                                      // Expect beta channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-dev "
@@ -392,6 +488,8 @@
         install_static::DEV_INDEX,  // Expect SxS dev mode.
         true,                       // Expect user-level.
         L"dev",                     // Expect dev channel.
+        false,                      // Expect not extended stable channel.
+        L"",                        // Expect no channel override.
     },
     {
         L"setup.exe --system-level --chrome-dev "
@@ -401,6 +499,19 @@
         install_static::DEV_INDEX,                   // Expect SxS dev mode.
         true,                                        // Expect user-level.
         L"dev",                                      // Expect dev channel.
+        false,  // Expect not extended stable channel.
+        L"",    // Expect no channel override.
+    },
+    {
+        L"setup.exe --system-level "
+        L"--channel=extended",         // System-level, primary mode.
+        L"",                           // New install.
+        L"x64-stable",                 // Stable channel.
+        install_static::STABLE_INDEX,  // Expect primary mode.
+        true,                          // Expect system-level.
+        L"",                           // Expect stable channel.
+        true,                          // Expect extended stable channel.
+        L"extended",                   // Expect the channel override.
     },
 };
 #else   // BUILDFLAG(GOOGLE_CHROME_BRANDING)
@@ -539,6 +650,11 @@
   EXPECT_THAT(details->install_mode_index(), Eq(test_data().index));
   EXPECT_THAT(details->system_level(), Eq(test_data().system_level));
   EXPECT_THAT(details->channel(), Eq(test_data().channel));
+#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
+  EXPECT_THAT(details->is_extended_stable_channel(),
+              Eq(test_data().is_extended_stable_channel));
+  EXPECT_THAT(details->channel_override(), Eq(test_data().channel_override));
+#endif
 }
 
 INSTANTIATE_TEST_SUITE_P(All,
diff --git a/chrome/installer/util/install_util.cc b/chrome/installer/util/install_util.cc
index 56f4976..6e1263e 100644
--- a/chrome/installer/util/install_util.cc
+++ b/chrome/installer/util/install_util.cc
@@ -484,8 +484,10 @@
     command_line->AppendSwitch(install_details.install_switch());
   if (install_details.channel_origin() ==
       install_static::ChannelOrigin::kPolicy) {
+    // Use channel_override rather than simply channel so that extended stable
+    // is differentiated from regular.
     command_line->AppendSwitchNative(installer::switches::kChannel,
-                                     install_details.channel());
+                                     install_details.channel_override());
   }
 }
 
diff --git a/chrome/installer/util/install_util_unittest.cc b/chrome/installer/util/install_util_unittest.cc
index 7865b886..5d5984f 100644
--- a/chrome/installer/util/install_util_unittest.cc
+++ b/chrome/installer/util/install_util_unittest.cc
@@ -22,6 +22,9 @@
 #include "base/test/test_reg_util_win.h"
 #include "base/version.h"
 #include "base/win/registry.h"
+#include "build/branding_buildflags.h"
+#include "chrome/install_static/install_details.h"
+#include "chrome/install_static/install_modes.h"
 #include "chrome/install_static/install_util.h"
 #include "chrome/install_static/test/scoped_install_details.h"
 #include "chrome/installer/util/google_update_constants.h"
@@ -477,3 +480,68 @@
   ASSERT_EQ(InstallUtil::GuidToSquid(L"EDA620E3-AA98-3846-B81E-3493CB2E0E02"),
             L"3E026ADE89AA64838BE14339BCE2E020");
 }
+
+#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
+// Tests that policy-overrides for channel values are included in generated
+// command lines.
+TEST(AppendModeAndChannelSwitchesTest, ExtendedStable) {
+  static constexpr struct {
+    const wchar_t* channel_override;
+    bool is_extended_stable_channel;
+  } kTestData[] = {
+      {
+          /*channel_override=*/nullptr,
+          /*is_extended_stable_channel=*/false,
+      },
+      {
+          /*channel_override=*/L"",
+          /*is_extended_stable_channel=*/false,
+      },
+      {
+          /*channel_override=*/L"stable",
+          /*is_extended_stable_channel=*/false,
+      },
+      {
+          /*channel_override=*/L"beta",
+          /*is_extended_stable_channel=*/false,
+      },
+      {
+          /*channel_override=*/L"dev",
+          /*is_extended_stable_channel=*/false,
+      },
+      {
+          /*channel_override=*/L"extended",
+          /*is_extended_stable_channel=*/true,
+      },
+  };
+
+  for (const auto& test_data : kTestData) {
+    // Install process-wide InstallDetails for the given test data.
+    auto install_details =
+        std::make_unique<install_static::PrimaryInstallDetails>();
+    install_details->set_mode(
+        &install_static::kInstallModes[install_static::STABLE_INDEX]);
+    install_details->set_channel(L"");
+    if (test_data.channel_override) {
+      install_details->set_channel_origin(
+          install_static::ChannelOrigin::kPolicy);
+      install_details->set_channel_override(test_data.channel_override);
+    }
+    install_details->set_is_extended_stable_channel(
+        test_data.is_extended_stable_channel);
+    install_static::ScopedInstallDetails scoped_details(
+        std::move(install_details));
+
+    // Generate a command line.
+    base::CommandLine cmd_line(base::CommandLine::NO_PROGRAM);
+    InstallUtil::AppendModeAndChannelSwitches(&cmd_line);
+
+    // Ensure that it has the proper --channel switch.
+    if (test_data.channel_override) {
+      ASSERT_TRUE(cmd_line.HasSwitch(installer::switches::kChannel));
+      ASSERT_EQ(cmd_line.GetSwitchValueNative(installer::switches::kChannel),
+                test_data.channel_override);
+    }
+  }
+}
+#endif  // BUILDFLAG(GOOGLE_CHROME_BRANDING)
diff --git a/chrome/services/qrcode_generator/qrcode_generator_service_impl.cc b/chrome/services/qrcode_generator/qrcode_generator_service_impl.cc
index 21cc4b9..f392e58d 100644
--- a/chrome/services/qrcode_generator/qrcode_generator_service_impl.cc
+++ b/chrome/services/qrcode_generator/qrcode_generator_service_impl.cc
@@ -13,6 +13,7 @@
 #include "components/qr_code_generator/qr_code_generator.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/size.h"
+#include "ui/gfx/skia_util.h"
 
 namespace qrcode_generator {
 
@@ -135,24 +136,24 @@
     int top_y_pixels = top_y_modules * kModuleSizePixels;
     int dim_pixels = kModuleSizePixels * kLocatorSizeModules;
     canvas->drawRoundRect(
-        {left_x_pixels, top_y_pixels, left_x_pixels + dim_pixels,
-         top_y_pixels + dim_pixels},
+        gfx::RectToSkRect(
+            gfx::Rect(left_x_pixels, top_y_pixels, dim_pixels, dim_pixels)),
         radius, radius, paint_foreground);
     // Middle square, one module smaller in all dimensions (5x5).
     left_x_pixels += kModuleSizePixels;
     top_y_pixels += kModuleSizePixels;
     dim_pixels -= 2 * kModuleSizePixels;
     canvas->drawRoundRect(
-        {left_x_pixels, top_y_pixels, left_x_pixels + dim_pixels,
-         top_y_pixels + dim_pixels},
+        gfx::RectToSkRect(
+            gfx::Rect(left_x_pixels, top_y_pixels, dim_pixels, dim_pixels)),
         radius, radius, paint_background);
     // Inner square, one additional module smaller in all dimensions (3x3).
     left_x_pixels += kModuleSizePixels;
     top_y_pixels += kModuleSizePixels;
     dim_pixels -= 2 * kModuleSizePixels;
     canvas->drawRoundRect(
-        {left_x_pixels, top_y_pixels, left_x_pixels + dim_pixels,
-         top_y_pixels + dim_pixels},
+        gfx::RectToSkRect(
+            gfx::Rect(left_x_pixels, top_y_pixels, dim_pixels, dim_pixels)),
         radius, radius, paint_foreground);
   };
 
@@ -206,10 +207,10 @@
           SkScalar radius = kModuleSizePixels / 2 - 1;
           canvas.drawCircle(xc, yc, radius, paint_black);
         } else {
-          canvas.drawRect(
-              {x * kModuleSizePixels, y * kModuleSizePixels,
-               (x + 1) * kModuleSizePixels, (y + 1) * kModuleSizePixels},
-              paint_black);
+          canvas.drawRect(gfx::RectToSkRect(gfx::Rect(
+                              x * kModuleSizePixels, y * kModuleSizePixels,
+                              kModuleSizePixels, kModuleSizePixels)),
+                          paint_black);
         }
       }
     }
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index b369ee64..48cba08 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1859,6 +1859,7 @@
       "../browser/ui/views/direct_sockets_connection_bubble_dialog_browsertest.cc",
       "../browser/ui/views/eye_dropper/eye_dropper_browsertest.cc",
       "../browser/ui/views/hats/hats_browsertest.cc",
+      "../browser/ui/views/incognito_clear_browsing_data_dialog_browsertest.cc",
       "../browser/ui/views/intent_picker_bubble_view_browsertest.cc",
       "../browser/ui/views/reader_mode/reader_mode_icon_view_browsertest.cc",
       "../browser/ui/views/sharing/click_to_call_browsertest.cc",
@@ -4301,7 +4302,6 @@
     # TODO(crbug.com/1186446): move p_s_d_impl_unittest.cc to the same directory
     # as presentation_service_delegate_impl.* files.
     "../browser/media/router/presentation/presentation_service_delegate_impl_unittest.cc",
-    "../browser/media/webrtc/camera_pan_tilt_zoom_permission_context_unittest.cc",
     "../browser/media/webrtc/media_stream_device_permission_context_unittest.cc",
     "../browser/metrics/chrome_browser_main_extra_parts_metrics_unittest.cc",
     "../browser/metrics/chrome_metrics_extensions_helper_unittest.cc",
@@ -4918,36 +4918,112 @@
     "//chrome:child_dependencies",
     "//chrome:resources",
     "//chrome:strings",
+    "//chrome/app:command_ids",
+    "//chrome/app/theme:chrome_unscaled_resources_grit",
+    "//chrome/app/vector_icons",
+    "//chrome/browser:active_use_util",
+    "//chrome/browser:buildflags",
+    "//chrome/browser:permissions_proto",
+    "//chrome/browser:theme_properties",
+    "//chrome/browser/browsing_data:constants",
+    "//chrome/browser/devtools",
+    "//chrome/browser/media/router",
+    "//chrome/browser/media/router:media_router_feature",
     "//chrome/browser/media/router:unittests",
+    "//chrome/browser/net:probe_message_proto",
     "//chrome/browser/notifications:unit_tests",
     "//chrome/browser/payments:unittests",
     "//chrome/browser/persisted_state_db:persisted_state_db",
+    "//chrome/browser/persisted_state_db:persisted_state_db_content_proto",
     "//chrome/browser/privacy_budget:unit_tests",
+    "//chrome/browser/profile_resetter:profile_reset_report_proto",
+    "//chrome/browser/profiling_host",
+    "//chrome/browser/push_messaging:budget_proto",
+    "//chrome/browser/safe_browsing:advanced_protection",
+    "//chrome/browser/safe_browsing:metrics_collector",
+    "//chrome/browser/safe_browsing:verdict_cache_manager_factory",
+    "//chrome/browser/sharing/proto",
+    "//chrome/browser/storage_access_api:permissions",
+    "//chrome/browser/sync_file_system/drive_backend:sync_file_system_drive_proto",
     "//chrome/browser/ui:test_support",
+    "//chrome/browser/ui/commander:fuzzy_finder",
+    "//chrome/browser/ui/webui/downloads:mojo_bindings",
+    "//chrome/browser/ui/webui/new_tab_page:mojo_bindings",
     "//chrome/browser/updates/announcement_notification:unit_tests",
     "//chrome/browser/video_tutorials:unit_tests",
     "//chrome/browser/web_share_target:unit_tests",
     "//chrome/common:test_support",
+    "//chrome/common:version_header",
+    "//chrome/common/privacy_budget:test_support",
     "//chrome/common/privacy_budget:unit_tests",
     "//chrome/common/profiler:unit_tests",
+    "//chrome/common/search:generate_chrome_colors_info",
+    "//chrome/common/search:generate_colors_info",
+    "//chrome/common/themes:autogenerated_theme_util",
     "//chrome/services/file_util:unit_tests",
+    "//chrome/services/qrcode_generator/public/cpp",
+    "//chrome/test/data:chrome_test_resources_grit",
     "//components/account_id",
+    "//components/assist_ranker/proto",
     "//components/autofill/content/renderer:test_support",
+    "//components/background_sync",
+    "//components/blocked_content",
+    "//components/blocklist/opt_out_blocklist",
+    "//components/bookmarks/browser",
+    "//components/bookmarks/common",
+    "//components/bookmarks/managed",
+    "//components/browser_sync",
+    "//components/browsing_data/content",
     "//components/browsing_data/content:test_support",
+    "//components/browsing_data/core",
+    "//components/captive_portal/content",
     "//components/captive_portal/core:buildflags",
     "//components/component_updater:test_support",
+    "//components/content_settings/browser",
     "//components/content_settings/browser:test_support",
+    "//components/content_settings/browser/ui",
     "//components/content_settings/core/test:test_support",
+    "//components/country_codes",
     "//components/data_reduction_proxy/core/browser:test_support",
     "//components/data_use_measurement/core",
     "//components/download/public/background_service/test:test_support",
+    "//components/drive",
+    "//components/drive:test_support",
+    "//components/embedder_support",
+    "//components/encrypted_messages",
+    "//components/encrypted_messages:encrypted_message_proto",
+    "//components/enterprise/common/proto:connectors_proto",
+    "//components/enterprise/common/proto:device_trust_report_event_proto",
+    "//components/enterprise/common/proto:extensions_workflow_events_proto",
     "//components/favicon/core/test:test_support",
+    "//components/feature_engagement/public",
+    "//components/feed:buildflags",
+    "//components/feed/core/v2:feed_core_stubs",
+    "//components/feed/core/v2:feed_core_v2",
+    "//components/feedback",
+    "//components/flags_ui",
     "//components/flags_ui:test_support",
+    "//components/history/content/browser",
+    "//components/history/core/common",
+    "//components/history_clusters/core",
     "//components/history_clusters/core:test_support",
+    "//components/image_fetcher/core",
+    "//components/image_fetcher/core:test_support",
+    "//components/infobars/content",
+    "//components/invalidation/impl",
+    "//components/invalidation/impl:test_support",
+    "//components/language/core/browser",
+    "//components/leveldb_proto:test_support",
+    "//components/live_caption:constants",
+    "//components/lookalikes/core:features",
     "//components/mirroring:mirroring_tests",
     "//components/nacl/common:buildflags",
+    "//components/no_state_prefetch/browser",
+    "//components/no_state_prefetch/common",
     "//components/offline_items_collection/core/test_support",
     "//components/offline_pages/task:test_support",
+    "//components/omnibox/browser:vector_icons",
+    "//components/onc",
     "//components/optimization_guide/content/browser",
     "//components/optimization_guide/content/browser:test_support",
     "//components/optimization_guide/content/renderer",
@@ -4957,39 +5033,98 @@
     "//components/page_info",
     "//components/page_load_metrics/browser",
     "//components/page_load_metrics/browser:test_support",
+    "//components/page_load_metrics/common",
     "//components/page_load_metrics/common:test_support",
+    "//components/paint_preview/common/mojom",
+    "//components/password_manager/content/browser",
+    "//components/payments/content",
+    "//components/performance_manager",
+    "//components/performance_manager/public/mojom",
+    "//components/performance_manager/test_support:test_support_common",
+    "//components/policy/core/browser:test_support",
+    "//components/privacy_sandbox:privacy_sandbox_prefs",
+    "//components/proxy_config",
+    "//components/query_parser",
     "//components/query_tiles:unit_tests",
+    "//components/reading_list/core",
+    "//components/reading_list/features:flags",
+    "//components/renderer_context_menu",
+    "//components/reporting/client:report_queue",
+    "//components/reporting/client:report_queue_configuration",
+    "//components/reporting/client:report_queue_provider",
     "//components/reporting/client:test_support",
     "//components/reporting/encryption:decryption",
     "//components/reporting/encryption:encryption",
     "//components/reporting/encryption:encryption_module",
     "//components/reporting/encryption:encryption_module_interface",
+    "//components/reporting/encryption:primitives",
     "//components/reporting/encryption:test_support",
     "//components/reporting/encryption:testing_primitives",
+    "//components/reporting/encryption:verification",
     "//components/reporting/storage:storage_uploader_interface",
     "//components/reporting/storage:test_support",
+    "//components/reporting/util:shared_vector",
+    "//components/reporting/util:status_macros",
+    "//components/reporting/util:task_runner_context",
     "//components/reporting/util:test_callbacks_support",
+    "//components/reputation/core",
     "//components/resources",
     "//components/safe_browsing:buildflags",
+    "//components/safe_browsing/content/browser",
+    "//components/safe_browsing/content/browser:client_side_detection",
+    "//components/safe_browsing/content/browser:client_side_model_loader",
+    "//components/safe_browsing/content/common:interfaces",
+    "//components/safe_browsing/content/common:interfaces_shared_cpp_sources",
+    "//components/safe_browsing/content/password_protection",
     "//components/safe_browsing/content/password_protection:mock_password_protection",
+    "//components/safe_browsing/content/web_ui",
+    "//components/safe_browsing/core:client_model_proto",
     "//components/safe_browsing/core:features",
+    "//components/safe_browsing/core:verdict_cache_manager",
+    "//components/safe_browsing/core/browser:referrer_chain_provider",
+    "//components/safe_browsing/core/browser/sync",
+    "//components/safe_browsing/core/common",
     "//components/safe_browsing/core/db",
     "//components/safe_browsing/core/db:test_database_manager",
     "//components/safe_search_api:test_support",
     "//components/schema_org/common:improved_mojom",
+    "//components/search",
+    "//components/security_interstitials/content:proto",
+    "//components/security_interstitials/content:security_interstitial_page",
+    "//components/security_interstitials/core:unsafe_resource",
+    "//components/send_tab_to_self",
+    "//components/services/app_service/public/cpp:intents",
     "//components/services/app_service/public/cpp:protocol_handling",
+    "//components/services/paint_preview_compositor/public/mojom",
     "//components/services/patch/content",
     "//components/services/unzip/content",
+    "//components/site_engagement/content",
+    "//components/site_engagement/core",
+    "//components/site_isolation",
     "//components/spellcheck:buildflags",
+    "//components/spellcheck/browser",
+    "//components/spellcheck/common",
+    "//components/spellcheck/common:spellcheck_result",
+    "//components/spellcheck/renderer",
+    "//components/sqlite_proto",
     "//components/strings",
+    "//components/subresource_filter/core/browser",
     "//components/subresource_filter/core/browser:test_support",
     "//components/subresource_redirect:test_support",
+    "//components/subresource_redirect/proto",
     "//components/sync:test_support",
+    "//components/sync_bookmarks",
     "//components/sync_device_info:test_support",
     "//components/sync_sessions:test_support",
     "//components/sync_user_events:test_support",
+    "//components/tab_count_metrics",
+    "//components/tab_groups",
     "//components/translate/core/browser:test_support",
     "//components/ukm/content",
+    "//components/unified_consent",
+    "//components/url_formatter/spoof_checks/common_words:common",
+    "//components/url_formatter/spoof_checks/common_words:common_words_dafsa",
+    "//components/user_manager",
     "//components/variations:test_support",
     "//components/version_info:generate_version_info",
     "//components/webrtc",
@@ -5002,8 +5137,9 @@
     "//device/bluetooth:mocks",
     "//device/fido",
     "//device/fido:test_support",
-    "//extensions/buildflags",
+    "//gin",
     "//google_apis",
+    "//google_apis/gcm",
     "//gpu:test_support",
     "//media:test_support",
     "//mojo/public/cpp/bindings",
@@ -5011,36 +5147,67 @@
     "//net:test_support",
     "//ppapi/buildflags",
     "//services/data_decoder/public/cpp:test_support",
+    "//services/device/public/cpp:device_features",
     "//services/device/public/cpp:test_support",
     "//services/network:test_support",
     "//services/network/public/cpp",
     "//services/network/public/mojom",
+    "//services/preferences/public/cpp/tracked",
+    "//services/preferences/public/cpp/tracked:test_support",
+    "//services/preferences/public/mojom",
+    "//services/resource_coordinator/public/cpp/memory_instrumentation:browser",
+    "//services/service_manager/public/cpp/test:test_support",
     "//skia",
+    "//storage/browser:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf:unit_tests",
+    "//third_party/blink/public/common/privacy_budget:test_support",
     "//third_party/icu",
     "//third_party/leveldatabase",
     "//third_party/libaddressinput",
     "//third_party/libphonenumber",
     "//third_party/metrics_proto",
+    "//third_party/microsoft_webauthn",
     "//third_party/re2",
     "//third_party/webrtc_overrides:webrtc_component",
+    "//third_party/widevine/cdm:headers",
+    "//third_party/zlib/google:zip",
     "//ui/base:test_support",
+    "//ui/base/clipboard:clipboard_test_support",
     "//ui/display:test_support",
+    "//ui/events:gesture_detection",
+    "//ui/events:test_support",
     "//ui/gfx:test_support",
     "//ui/gl",
     "//ui/native_theme:test_support",
     "//ui/resources",
+    "//ui/shell_dialogs",
     "//ui/web_dialogs:web_dialogs_unittests",
+    "//ui/webui",
+    "//ui/webui/resources/cr_components/customize_themes:mojom",
     "//v8",
   ]
 
+  if (enable_paint_preview) {
+    deps += [ "//chrome/browser/paint_preview:services" ]
+  }
+
   if (is_mac) {
     data_deps += [ "//chrome:chrome_framework" ]
     deps += [
+      "//chrome/app_shim",
+      "//chrome/browser/apps/app_shim",
+      "//chrome/browser/ui/cocoa/notifications:common",
+      "//chrome/common/notifications",
+      "//chrome/common/safe_browsing:archive_analyzer_results",
+      "//chrome/common/safe_browsing:disk_image_type_sniffer_mac",
       "//chrome/services/mac_notifications:unit_tests",
       "//chrome/services/mac_notifications/public/cpp",
+      "//chrome/services/mac_notifications/public/mojom",
+      "//chrome/utility/safe_browsing/mac",
+      "//chrome/utility/safe_browsing/mac:dmg_common",
+      "//ui/events/devices:test_support",
     ]
   }
 
@@ -5049,8 +5216,17 @@
     sources += [ "../browser/ui/startup/credential_provider_signin_info_fetcher_win_unittest.cc" ]
     deps += [
       "//chrome:packed_resources_integrity",
+      "//chrome/browser:chrome_process_finder",
+      "//chrome/browser/safe_browsing/chrome_cleaner",
+      "//chrome/browser/safe_browsing/chrome_cleaner:public",
       "//chrome/browser/win/conflicts:unit_tests",
+      "//chrome/chrome_elf:constants",
+      "//chrome/common/notifications",
+      "//chrome/services/util_win:lib",
       "//chrome/test:credential_provider_test_utils",
+      "//components/chrome_cleaner/public/constants",
+      "//components/chrome_cleaner/public/proto",
+      "//ui/events/devices:test_support",
     ]
   }
 
@@ -5066,6 +5242,7 @@
       "../browser/signin/dice_web_signin_interceptor_unittest.cc",
       "../browser/signin/process_dice_header_delegate_impl_unittest.cc",
       "../browser/signin/signin_manager_unittest.cc",
+      "../browser/ui/passwords/account_storage_auth_helper_unittest.cc",
       "../browser/ui/views/profiles/dice_web_signin_interception_bubble_view_unittest.cc",
       "../browser/ui/views/profiles/profile_customization_bubble_sync_controller_unittest.cc",
       "../browser/ui/webui/signin/dice_turn_sync_on_helper_unittest.cc",
@@ -5160,28 +5337,55 @@
       "//chrome:chrome_android_core",
       "//chrome/android:app_hooks_java",
       "//chrome/android:chrome_java",
+      "//chrome/android/modules/dev_ui/provider:native",
+      "//chrome/browser:client_discourse_context_proto",
+      "//chrome/browser:delta_file_proto",
+      "//chrome/browser:explore_sites_proto",
+      "//chrome/browser:profile_token",
+      "//chrome/browser:usage_stats_proto",
+      "//chrome/browser/commerce/merchant_viewer:merchant_viewer_data_manager",
       "//chrome/browser/continuous_search/internal:unit_tests",
+      "//chrome/browser/flags:flags_android",
       "//chrome/browser/locale:delegate_public_impl_java",
       "//chrome/browser/long_screenshots:services",
+      "//chrome/browser/notifications",
       "//chrome/browser/optimization_guide/android:native_j_unittests_jni_headers",
       "//chrome/browser/optimization_guide/android:native_java_unittests",
       "//chrome/browser/password_check/android:unit_tests",
       "//chrome/browser/policy/android:delegate_public_impl_java",
       "//chrome/browser/reading_list/android:unit_tests",
+      "//chrome/browser/share",
+      "//chrome/browser/supervised_user/kids_chrome_management:proto",
       "//chrome/browser/thumbnail:unit_tests",
       "//chrome/browser/updates:unit_tests",
       "//chrome/services/media_gallery_util:unit_tests",
+      "//components/back_forward_cache",
+      "//components/crash/content/browser",
       "//components/download/internal/common:internal_java",
+      "//components/embedder_support/android:browser_context",
       "//components/externalauth/android:google_delegate_public_impl_java",
       "//components/favicon/core/test:test_support",
+      "//components/feed/core/shared_prefs:feed_shared_prefs",
       "//components/feed/core/v2:test_helpers",
+      "//components/feed/mojom:mojo_bindings",
       "//components/gcm_driver/instance_id/android:instance_id_driver_java",
       "//components/gcm_driver/instance_id/android:instance_id_driver_test_support_java",
+      "//components/infobars/android",
       "//components/location/android:test_support",
+      "//components/media_router/browser:test_support",
       "//components/messages/android:test_support",
       "//components/module_installer/android:module_installer_java",
+      "//components/offline_pages/core/request_header",
+      "//components/offline_pages/task",
+      "//components/pref_registry",
+      "//components/services/unzip:in_process",
+      "//components/signin/core/browser",
       "//components/signin/public/android:signin_java_test_support",
+      "//components/ukm:test_support",
+      "//components/webapk:proto",
+      "//components/webapps/browser",
       "//content/public/android:content_java",
+      "//ui/events/devices:test_support",
     ]
     if (use_v8_context_snapshot) {
       deps += [ "//tools/v8_context_snapshot:v8_context_snapshot_assets" ]
@@ -5405,7 +5609,6 @@
       "../browser/ui/omnibox/clipboard_utils_unittest.cc",
       "../browser/ui/omnibox/omnibox_pedals_unittest.cc",
       "../browser/ui/page_info/permission_menu_model_unittest.cc",
-      "../browser/ui/passwords/account_storage_auth_helper_unittest.cc",
       "../browser/ui/passwords/bubble_controllers/auto_sign_in_bubble_controller_unittest.cc",
       "../browser/ui/passwords/bubble_controllers/generation_confirmation_bubble_controller_unittest.cc",
       "../browser/ui/passwords/bubble_controllers/items_bubble_controller_unittest.cc",
@@ -5583,9 +5786,20 @@
     }
 
     deps += [
+      "//chrome:packed_resources_integrity_hash",
+      "//chrome/browser:cart_db_content_proto",
+      "//chrome/browser/media/router:test_support",
       "//chrome/browser/promo_browser_command:mojo_bindings",
+      "//chrome/browser/resource_coordinator:intervention_policy_database_proto",
+      "//chrome/browser/resource_coordinator:tab_manager_features",
       "//chrome/browser/resource_coordinator:tab_metrics_event_proto",
+      "//chrome/browser/resource_coordinator/tab_ranker",
       "//chrome/browser/resource_coordinator/tab_ranker:tab_features_test_helper",
+      "//chrome/browser/resources:component_extension_resources_grit",
+      "//chrome/browser/resources/new_tab_page_instant:resources_grit",
+      "//chrome/browser/ui/color:color_headers",
+      "//chrome/browser/ui/webui/discards:mojo_bindings",
+      "//chrome/browser/web_applications:web_applications_test_support",
       "//chrome/services/speech:unit_tests",
       "//components/chrome_cleaner/test:test_name_helper",
       "//components/enterprise",
@@ -5603,6 +5817,8 @@
       "//third_party/libaddressinput",
       "//third_party/zxcvbn-cpp",
       "//ui/base/idle:test_support",
+      "//ui/color:color_headers",
+      "//ui/color:test_support",
       "//ui/native_theme:test_support",
     ]
     if (is_win) {
@@ -5610,8 +5826,67 @@
     }
     if (is_chromeos_ash) {
       deps += [
+        "//ash/assistant/model",
+        "//ash/assistant/util",
+        "//ash/components/audio",
+        "//ash/content/scanning",
+        "//ash/public/cpp:test_support",
+        "//ash/shortcut_viewer",
+        "//ash/shortcut_viewer/strings:strings_grit",
+        "//chrome/browser/ash/crosapi",
+        "//chrome/browser/ash/crosapi:unit_tests",
+        "//chrome/browser/chromeos:arc_test_support",
+        "//chrome/browser/nearby_sharing:share_target",
+        "//chrome/browser/nearby_sharing/certificates",
+        "//chrome/browser/nearby_sharing/common",
+        "//chrome/browser/nearby_sharing/contacts",
+        "//chrome/browser/nearby_sharing/instantmessaging/proto",
+        "//chrome/browser/nearby_sharing/local_device_data",
+        "//chrome/browser/nearby_sharing/proto:tachyon_proto",
+        "//chrome/browser/supervised_user/kids_chrome_management:proto",
+        "//chrome/browser/ui/webui/nearby_share:mojom",
+        "//chrome/browser/ui/webui/nearby_share/public/mojom",
+        "//chrome/common/performance_manager/mojom",
         "//chrome/services/sharing/public/cpp",
         "//chrome/services/sharing/public/cpp:unit_tests",
+        "//chromeos/components/camera_app_ui",
+        "//chromeos/components/feature_usage:feature_usage",
+        "//chromeos/components/multidevice:test_support",
+        "//chromeos/components/proximity_auth",
+        "//chromeos/components/proximity_auth:test_support",
+        "//chromeos/components/sync_wifi",
+        "//chromeos/cryptohome",
+        "//chromeos/dbus",
+        "//chromeos/dbus:update_engine_proto",
+        "//chromeos/dbus/attestation",
+        "//chromeos/dbus/cicerone",
+        "//chromeos/dbus/concierge",
+        "//chromeos/dbus/debug_daemon",
+        "//chromeos/dbus/hermes",
+        "//chromeos/dbus/power",
+        "//chromeos/dbus/seneschal",
+        "//chromeos/dbus/shill",
+        "//chromeos/disks",
+        "//chromeos/disks:test_support",
+        "//chromeos/login/auth:test_support",
+        "//chromeos/login/login_state:test_support",
+        "//chromeos/login/session",
+        "//chromeos/memory/userspace_swap",
+        "//chromeos/services/assistant/public/cpp",
+        "//chromeos/services/assistant/public/shared",
+        "//chromeos/services/device_sync/public/cpp:test_support",
+        "//chromeos/services/multidevice_setup/public/cpp:test_support",
+        "//chromeos/services/secure_channel/public/cpp/client:test_support",
+        "//chromeos/system",
+        "//chromeos/ui/base",
+        "//components/services/app_service/public/cpp:app_update",
+        "//components/services/app_service/public/cpp:instance_update",
+        "//components/session_manager/core",
+        "//components/webapk:proto",
+        "//ui/base/ime/chromeos",
+        "//ui/chromeos",
+        "//ui/file_manager:resources_grit",
+        "//ui/wm/public",
       ]
     }
   }
@@ -5731,6 +6006,9 @@
     ]
 
     deps += [
+      "//chromeos/crosapi/mojom",
+      "//chromeos/lacros:test_support",
+      "//chromeos/ui/base",
       "//components/account_manager_core",
       "//components/account_manager_core:test_support",
     ]
@@ -5739,7 +6017,6 @@
   if (is_chromeos_ash) {
     sources -= [
       "../browser/signin/chrome_signin_status_metrics_provider_delegate_unittest.cc",
-      "../browser/ui/passwords/account_storage_auth_helper_unittest.cc",
       "../browser/ui/webui/settings/settings_manage_profile_handler_unittest.cc",
       "../browser/ui/webui/signin/profile_picker_handler_unittest.cc",
 
@@ -6330,6 +6607,8 @@
       "//chrome/browser/web_applications:unit_tests",
       "//chrome/browser/web_applications:web_applications_unit_tests",
       "//chrome/browser/web_applications/extensions:unit_tests",
+      "//chrome/common/apps/platform_apps",
+      "//chrome/common/extensions:extension_features_unittest",
       "//chrome/common/extensions/api",
       "//chrome/utility/image_writer:unit_tests",
       "//components/enterprise:test_support",
@@ -6338,8 +6617,11 @@
       "//extensions:extensions_resources",
       "//extensions/browser:test_support",
       "//extensions/browser:value_store_test_support",
+      "//extensions/browser/updater",
+      "//extensions/buildflags",
       "//extensions/common",
       "//extensions/common:mojom",
+      "//extensions/renderer",
       "//extensions/renderer:unit_test_support",
       "//extensions/strings",
       "//google_apis",
@@ -6467,6 +6749,7 @@
     # TODO(crbug/1056278): Enable this on Fuchsia
     if (!is_fuchsia) {
       deps += [
+        "//components/safe_browsing/core:file_type_policies",
         "//components/safe_browsing/core:file_type_policies_test_support",
         "//components/safe_browsing/core/common:test_support",
       ]
@@ -6551,6 +6834,8 @@
     deps += [
       ":test_proto",
       "../common/safe_browsing:mock_binary_feature_extractor",
+      "//chrome/common/safe_browsing:binary_feature_extractor",
+      "//chrome/common/safe_browsing:download_type_util",
       "//chrome/services/file_util/public/cpp:unit_tests",
     ]
   } else if (safe_browsing_mode == 2 && is_android) {
@@ -6606,7 +6891,9 @@
     ]
 
     deps += [
+      "//chrome/common/printing",
       "//chrome/common/printing:unit_tests",
+      "//components/printing/common:mojo_interfaces",
       "//printing",
       "//printing:test_support",
       "//printing/mojom",
@@ -6828,6 +7115,8 @@
         "../browser/google/google_update_policy_fetcher_win_util_unittest.cc",
         "../browser/google/google_update_win_unittest.cc",
       ]
+
+      deps += [ "//google_update" ]
     }
   }
   if (!is_android && !is_chromeos_ash) {
@@ -6858,9 +7147,16 @@
       "../browser/upgrade_detector/upgrade_detector_chromeos_unittest.cc",
     ]
   }
+  if (is_linux) {
+    deps += [ "//components/dbus/thread_linux" ]
+  }
+
   if (toolkit_views) {
     deps += [
       "//chrome:unit_tests_pak",
+      "//chrome/browser/ui/views",
+      "//components/constrained_window",
+      "//components/media_message_center",
       "//components/media_router/browser:test_support",
       "//components/web_modal:test_support",
       "//content/test:test_support",
@@ -6870,6 +7166,10 @@
       "//ui/web_dialogs:test_support",
     ]
 
+    if (!is_mac) {
+      deps += [ "//apps/ui/views" ]
+    }
+
     data_deps += [ "//chrome:unit_tests_pak" ]
 
     sources += [
@@ -6882,6 +7182,7 @@
       "../browser/ui/views/apps/app_info_dialog/app_info_permissions_panel_unittest.cc",
       "../browser/ui/views/autofill/autofill_popup_view_native_views_unittest.cc",
       "../browser/ui/views/autofill/autofill_popup_view_utils_unittest.cc",
+      "../browser/ui/views/bookmarks/bookmark_bar_view_test_helper.h",
       "../browser/ui/views/bookmarks/bookmark_bar_view_unittest.cc",
       "../browser/ui/views/bookmarks/bookmark_bubble_view_unittest.cc",
       "../browser/ui/views/bookmarks/bookmark_context_menu_unittest.cc",
@@ -7082,6 +7383,27 @@
     sources +=
         [ "../browser/ui/views/frame/windows_10_caption_button_unittest.cc" ]
   }
+
+  # This target gets pulled in in Chromecast builds, even though it doesn't get
+  # built or used there. The below files cause "gn check" failures in ways that
+  # would be resolvable only by adding "nogncheck" on the includes in question.
+  # Rather than doing that, simply eliminate the files from being visible to
+  # GN.
+  # NOTE: A natural idea would be to set sources to the empty set here, but
+  # that surprisingly turns out to cause its own "gn check" problems as various
+  # utility headers are contained in those sources that other test targets in
+  # //chrome include.
+  # TODO(crbug.com/1215474): Eliminate //chrome being visible in the GN structure
+  # on Chromecast and remove this section entirely.
+  if (is_linux && is_chromecast) {
+    sources -= [
+      "../browser/browsing_data/browsing_data_media_license_helper_unittest.cc",
+      "../browser/extensions/api/safe_browsing_private/safe_browsing_private_event_router_unittest.cc",
+      "../browser/printing/cloud_print/privet_http_unittest.cc",
+      "../browser/ui/tab_contents/chrome_web_contents_view_handle_drop_unittest.cc",
+      "../browser/ui/webui/management/management_ui_handler_unittest.cc",
+    ]
+  }
 }
 
 static_library("test_support_unit") {
diff --git a/chrome/test/android/BUILD.gn b/chrome/test/android/BUILD.gn
index 7dde5ee..028bd89 100644
--- a/chrome/test/android/BUILD.gn
+++ b/chrome/test/android/BUILD.gn
@@ -294,6 +294,7 @@
     "//components/embedder_support/android:web_contents_delegate_java",
     "//components/favicon/android:java",
     "//components/infobars/android:java",
+    "//components/infobars/core:infobar_enums_java",
     "//components/location/android:location_java",
     "//components/omnibox/browser:browser_java",
     "//components/policy/android:policy_java",
diff --git a/chrome/test/android/javatests/src/org/chromium/chrome/test/util/InfoBarUtil.java b/chrome/test/android/javatests/src/org/chromium/chrome/test/util/InfoBarUtil.java
index d6525c4..1f22d8e 100644
--- a/chrome/test/android/javatests/src/org/chromium/chrome/test/util/InfoBarUtil.java
+++ b/chrome/test/android/javatests/src/org/chromium/chrome/test/util/InfoBarUtil.java
@@ -6,8 +6,12 @@
 
 import android.view.View;
 
+import org.hamcrest.BaseMatcher;
+import org.hamcrest.Description;
+
 import org.chromium.base.test.util.CriteriaHelper;
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.infobar.InfoBarIdentifier;
 import org.chromium.components.infobars.InfoBar;
 import org.chromium.content_public.browser.test.util.TestThreadUtils;
 
@@ -76,4 +80,28 @@
     public static void waitUntilNoInfoBarsExist(final List<InfoBar> infoBars) {
         CriteriaHelper.pollUiThread(infoBars::isEmpty);
     }
+
+    /**
+     * Matcher used to find a specific infobar (by id) and tolerant of multiple InfoBars
+     * simultaneously showing.
+     */
+    public static class InfoBarMatcher extends BaseMatcher<InfoBar> {
+        private @InfoBarIdentifier int mId;
+        public InfoBar mLastMatch;
+
+        public InfoBarMatcher(@InfoBarIdentifier int id) {
+            mId = id;
+        }
+
+        @Override
+        public boolean matches(Object o) {
+            mLastMatch = (InfoBar) o;
+            return mLastMatch.getInfoBarIdentifier() == mId;
+        }
+
+        @Override
+        public void describeTo(Description description) {
+            description.appendText("Couldn't find infobar with id " + mId);
+        }
+    }
 }
diff --git a/chrome/test/base/test_browser_window.h b/chrome/test/base/test_browser_window.h
index 720ed65f..30923d2 100644
--- a/chrome/test/base/test_browser_window.h
+++ b/chrome/test/base/test_browser_window.h
@@ -194,6 +194,8 @@
       base::OnceClosure success_callback,
       base::OnceClosure failure_callback,
       const std::map<std::string, bool>& product_specific_data) override {}
+
+  void ShowIncognitoClearBrowsingDataDialog() override {}
 #endif
 
   ExclusiveAccessContext* GetExclusiveAccessContext() override;
diff --git a/chrome/test/data/extensions/api_test/service_worker/worker_based_background/module_service_worker_dynamic_import/service_worker_background.js b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/module_service_worker_dynamic_import/service_worker_background.js
index 5c5f5846..078b1e7 100644
--- a/chrome/test/data/extensions/api_test/service_worker/worker_based_background/module_service_worker_dynamic_import/service_worker_background.js
+++ b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/module_service_worker_dynamic_import/service_worker_background.js
@@ -4,4 +4,4 @@
 
 // We expect this import to fail as dynamic import is rejected on
 // ServiceWorkerGlobalScope.
-importScript('./empty.js');
+import('./empty.js');
diff --git a/chrome/test/data/extensions/api_test/service_worker/worker_based_background/syntax_error/manifest.json b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/syntax_error/manifest.json
new file mode 100644
index 0000000..c605a18
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/syntax_error/manifest.json
@@ -0,0 +1,7 @@
+{
+  "name": "Service Worker-based background script",
+  "version": "0.1",
+  "manifest_version": 3,
+  "description": "Test reporting syntax errors to UI for service worker-based extensions.",
+  "background": {"service_worker": "service_worker_background.js"}
+}
diff --git a/chrome/test/data/extensions/api_test/service_worker/worker_based_background/syntax_error/service_worker_background.js b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/syntax_error/service_worker_background.js
new file mode 100644
index 0000000..8febf60
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/syntax_error/service_worker_background.js
@@ -0,0 +1,12 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+chrome.test.sendMessage('ready', () => {
+  syntaxError();
+});
+
+var syntaxError = function() {
+  // Intentional syntax error.
+  console.lg('test');
+};
diff --git a/chrome/test/data/extensions/api_test/service_worker/worker_based_background/undefined_variable/manifest.json b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/undefined_variable/manifest.json
new file mode 100644
index 0000000..1262ede
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/undefined_variable/manifest.json
@@ -0,0 +1,7 @@
+{
+  "name": "Service Worker-based background script",
+  "version": "0.1",
+  "manifest_version": 3,
+  "description": "Test reporting an undefined variable to UI for service worker-based extensions.",
+  "background": {"service_worker": "service_worker_background.js"}
+}
diff --git a/chrome/test/data/extensions/api_test/service_worker/worker_based_background/undefined_variable/service_worker_background.js b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/undefined_variable/service_worker_background.js
new file mode 100644
index 0000000..d24b1c9
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/service_worker/worker_based_background/undefined_variable/service_worker_background.js
@@ -0,0 +1,12 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+chrome.test.sendMessage('ready', () => {
+  undefinedVariableError();
+});
+
+var undefinedVariableError = function() {
+  // Intentional undefined variable
+  console.log(undefined_variable);
+};
diff --git a/chrome/test/data/extensions/api_test/webrequest_cors_preflight/background.js b/chrome/test/data/extensions/api_test/webrequest_cors_preflight/background.js
new file mode 100644
index 0000000..91b3d48
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/webrequest_cors_preflight/background.js
@@ -0,0 +1,34 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+window.preflightHeadersReceivedCount = 0
+window.preflightProxyAuthRequiredCount = 0;
+window.preflightResponseStartedCount = 0;
+window.preflightResponseStartedSuccessfullyCount = 0
+
+chrome.webRequest.onHeadersReceived.addListener(function (details) {
+  if (details.method === "OPTIONS") {
+    ++window.preflightHeadersReceivedCount;
+    if (details.statusCode == 407) {
+      ++window.preflightProxyAuthRequiredCount;
+    }
+  }
+}, { urls: ['http://cors.test/*'] }, ["extraHeaders"]);
+
+chrome.webRequest.onResponseStarted.addListener(function (details) {
+  if (details.method === "OPTIONS") {
+    ++window.preflightResponseStartedCount;
+    if (details.statusCode == 204) {
+      ++window.preflightResponseStartedSuccessfullyCount;
+    }
+  }
+}, { urls: ['http://cors.test/*'] }, ["extraHeaders"]);
+
+chrome.webRequest.onCompleted.addListener(function (details) {
+  if (details.method === "OPTIONS" && details.statusCode == 204) {
+    chrome.test.sendMessage('cors-preflight-succeeded');
+  }
+}, { urls: ['http://cors.test/*'] }, ["extraHeaders"]);
+
+chrome.test.sendMessage('ready');
diff --git a/chrome/test/data/extensions/api_test/webrequest_cors_preflight/manifest.json b/chrome/test/data/extensions/api_test/webrequest_cors_preflight/manifest.json
new file mode 100644
index 0000000..e54be86
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/webrequest_cors_preflight/manifest.json
@@ -0,0 +1,8 @@
+{
+  "name": "CORS preflight WebRequest",
+  "description": "Test extension for webRequest api in extraHeaders mode for CORS preflight request",
+  "manifest_version": 2,
+  "permissions": [ "webRequest", "http://127.0.0.1/*", "http://cors.test/*" ],
+  "version": "0.1",
+  "background": {"scripts": ["background.js"]}
+}
diff --git a/chrome/test/data/media/picture-in-picture/window-size.html b/chrome/test/data/media/picture-in-picture/window-size.html
index 3a360b27..4f5bb1f 100644
--- a/chrome/test/data/media/picture-in-picture/window-size.html
+++ b/chrome/test/data/media/picture-in-picture/window-size.html
@@ -145,12 +145,5 @@
       .catch(e => { document.title = 'failed to enter Picture-in-Picture after leaving'; });
     });
   }
-
-  function resetVideo() {
-    video.addEventListener('emptied', () => {
-      document.title = 'emptied';
-    }, { once: true });
-    video.src = '';
-  }
 </script>
 </html>
diff --git a/chrome/test/data/policy/policy_test_cases.json b/chrome/test/data/policy/policy_test_cases.json
index 42d04be9..5a59ace 100644
--- a/chrome/test/data/policy/policy_test_cases.json
+++ b/chrome/test/data/policy/policy_test_cases.json
@@ -8318,10 +8318,15 @@
     ]
   },
   "LacrosSecondaryProfilesAllowed": {
-    "os": ["linux", "chromeos"],
-    "note": "TODO(crbug.com/1179280): Remove linux support and testcase for unset policy  once https://crbug.com/1169547 is done.",
+    "os": ["chromeos"],
     "policy_pref_mapping_tests": [
       {
+        "policies": {},
+        "prefs": {
+          "lacros_secondary_profiles_allowed": { "location": "local_state", "value": false }
+        }
+      },
+      {
         "policies": { "LacrosSecondaryProfilesAllowed": false },
         "prefs": {
           "lacros_secondary_profiles_allowed": { "location": "local_state", "value": false }
diff --git a/chrome/test/data/webrtc/capturing_page_embedded.html b/chrome/test/data/webrtc/capturing_page_embedded.html
index 58aa8bf..67e1253 100644
--- a/chrome/test/data/webrtc/capturing_page_embedded.html
+++ b/chrome/test/data/webrtc/capturing_page_embedded.html
@@ -19,20 +19,20 @@
         // Blocks until onCaptureHandleChange() unblocks.
       }
 
-      function readCaptureHandleFromSettings() {
+      function readCaptureHandle() {
         if (!capturedVideoTrack) {
           window.domAutomationController.send("error-no-video-track");
           return;
         }
 
-        let settings = capturedVideoTrack.getSettings();
-        if (!settings.captureHandle) {
+        let captureHandle = capturedVideoTrack.getCaptureHandle();
+        if (!captureHandle) {
           window.domAutomationController.send("no-embedded-capture-handle");
           return;
         }
 
         window.domAutomationController.send(
-          JSON.stringify(settings.captureHandle)
+          JSON.stringify(captureHandle)
         );
       }
 
@@ -72,8 +72,8 @@
       window.addEventListener("message", (event) => {
         if (event.data == "start-capture") {
           captureOtherTab();
-        } else if (event.data == "read-settings") {
-          readCaptureHandleFromSettings();
+        } else if (event.data == "read-capture-handle") {
+          readCaptureHandle();
         } else {
           window.domAutomationController.send("unrecognized-message");
         }
diff --git a/chrome/test/data/webrtc/capturing_page_main.html b/chrome/test/data/webrtc/capturing_page_main.html
index 8ad1d4806..709c273 100644
--- a/chrome/test/data/webrtc/capturing_page_main.html
+++ b/chrome/test/data/webrtc/capturing_page_main.html
@@ -23,20 +23,20 @@
         // Blocks until the embedded frame's onCaptureHandleChange() unblocks.
       }
 
-      function readCaptureHandleFromSettings() {
+      function readCaptureHandle() {
         if (!capturedVideoTrack) {
           window.domAutomationController.send("error-no-video-track");
           return;
         }
 
-        let settings = capturedVideoTrack.getSettings();
-        if (!settings.captureHandle) {
+        let captureHandle = capturedVideoTrack.getCaptureHandle();
+        if (!captureHandle) {
           window.domAutomationController.send("no-capture-handle");
           return;
         }
 
         window.domAutomationController.send(
-          JSON.stringify(settings.captureHandle)
+          JSON.stringify(captureHandle)
         );
       }
 
@@ -52,10 +52,10 @@
         // window.domAutomationController.send() called by embedded page.
       }
 
-      function readCaptureHandleFromSettingsInEmbeddedFrame() {
+      function readCaptureHandleInEmbeddedFrame() {
         document
           .getElementById("embedded_frame")
-          .contentWindow.postMessage("read-settings", "*");
+          .contentWindow.postMessage("read-capture-handle", "*");
         // window.domAutomationController.send() called by embedded page.
       }
 
diff --git a/chrome/tools/build/linux/FILES.cfg b/chrome/tools/build/linux/FILES.cfg
index 085b3524..1e14ff3 100644
--- a/chrome/tools/build/linux/FILES.cfg
+++ b/chrome/tools/build/linux/FILES.cfg
@@ -113,7 +113,6 @@
   {
     'filename': 'libvulkan.so.1',
     'buildtype': ['dev', 'official'],
-    'optional': ['dev', 'official'],
   },
   # SwiftShader files:
   {
@@ -228,7 +227,6 @@
     'filename': 'angle_libvulkan.breakpad.x64',
     'arch': ['64bit'],
     'buildtype': ['official'],
-    'optional': ['official'],
     'archive': 'breakpad-info.zip',
   },
   {
diff --git a/chrome/utility/safe_browsing/mac/BUILD.gn b/chrome/utility/safe_browsing/mac/BUILD.gn
index 65503ca..35c9fbf 100644
--- a/chrome/utility/safe_browsing/mac/BUILD.gn
+++ b/chrome/utility/safe_browsing/mac/BUILD.gn
@@ -27,7 +27,12 @@
 }
 
 source_set("dmg_common") {
-  visibility = [ ":*" ]
+  visibility = [
+    ":*",
+
+    # Unit tests directly use some of the utilities in this target.
+    "//chrome/test:unit_tests",
+  ]
 
   sources = [
     "convert_big_endian.h",
diff --git a/chromeos/chromeos_strings.grd b/chromeos/chromeos_strings.grd
index 5321f5b..94bd42f 100644
--- a/chromeos/chromeos_strings.grd
+++ b/chromeos/chromeos_strings.grd
@@ -262,6 +262,12 @@
       <message name="IDS_PASSWORD_EXPIRY_CHANGE_PASSWORD_BUTTON" desc="Text on a button that takes the user to page to change their password">
         Change password
       </message>
+      <message name="IDS_PASSWORD_CHANGE_NOTIFICATION_TITLE" desc="Message title for a notification that tells the user that the password was updated.">
+        Chrome OS password updated
+      </message>
+      <message name="IDS_PASSWORD_CHANGE_NOTIFICATION_BODY" desc="Message body on a notification that politely requests the user to start using the new password.">
+        Your password change was successful. Please use the new password from now on.
+      </message>
 
       <!-- In-session password change -->
       <message name="IDS_PASSWORD_CHANGE_CONFIRM_DIALOG_TITLE" desc="Title for the dialog where a user corrects and confirms their old and new passwords in order to complete a password change">
diff --git a/chromeos/chromeos_strings_grd/IDS_PASSWORD_CHANGE_NOTIFICATION_BODY.png.sha1 b/chromeos/chromeos_strings_grd/IDS_PASSWORD_CHANGE_NOTIFICATION_BODY.png.sha1
new file mode 100644
index 0000000..c1a10a6
--- /dev/null
+++ b/chromeos/chromeos_strings_grd/IDS_PASSWORD_CHANGE_NOTIFICATION_BODY.png.sha1
@@ -0,0 +1 @@
+49ae2f5bd55d863679d1bb2a2d1ec4a58b9cdeab
\ No newline at end of file
diff --git a/chromeos/chromeos_strings_grd/IDS_PASSWORD_CHANGE_NOTIFICATION_TITLE.png.sha1 b/chromeos/chromeos_strings_grd/IDS_PASSWORD_CHANGE_NOTIFICATION_TITLE.png.sha1
new file mode 100644
index 0000000..c1a10a6
--- /dev/null
+++ b/chromeos/chromeos_strings_grd/IDS_PASSWORD_CHANGE_NOTIFICATION_TITLE.png.sha1
@@ -0,0 +1 @@
+49ae2f5bd55d863679d1bb2a2d1ec4a58b9cdeab
\ No newline at end of file
diff --git a/chromeos/components/fast_pair/DIR_METADATA b/chromeos/components/quick_pair/DIR_METADATA
similarity index 100%
rename from chromeos/components/fast_pair/DIR_METADATA
rename to chromeos/components/quick_pair/DIR_METADATA
diff --git a/chromeos/components/fast_pair/OWNERS b/chromeos/components/quick_pair/OWNERS
similarity index 100%
rename from chromeos/components/fast_pair/OWNERS
rename to chromeos/components/quick_pair/OWNERS
diff --git a/chromeos/components/fast_pair/common/BUILD.gn b/chromeos/components/quick_pair/common/BUILD.gn
similarity index 65%
rename from chromeos/components/fast_pair/common/BUILD.gn
rename to chromeos/components/quick_pair/common/BUILD.gn
index aed93ad..96faab3 100644
--- a/chromeos/components/fast_pair/common/BUILD.gn
+++ b/chromeos/components/quick_pair/common/BUILD.gn
@@ -2,12 +2,12 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-assert(is_chromeos, "Fast Pair is CrOS only")
+assert(is_chromeos, "Quick Pair protocols (e.g. Fast Pair) are CrOS only")
 
 source_set("common") {
   sources = [
-    "fast_pair_features.cc",
-    "fast_pair_features.h",
+    "quick_pair_features.cc",
+    "quick_pair_features.h",
   ]
 
   public_deps = [ "//base" ]
diff --git a/chromeos/components/fast_pair/common/fast_pair_features.cc b/chromeos/components/quick_pair/common/quick_pair_features.cc
similarity index 83%
rename from chromeos/components/fast_pair/common/fast_pair_features.cc
rename to chromeos/components/quick_pair/common/quick_pair_features.cc
index 117bcb0..ac9a0b6 100644
--- a/chromeos/components/fast_pair/common/fast_pair_features.cc
+++ b/chromeos/components/quick_pair/common/quick_pair_features.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chromeos/components/fast_pair/common/fast_pair_features.h"
+#include "chromeos/components/quick_pair/common/quick_pair_features.h"
 
 namespace chromeos {
 namespace features {
diff --git a/chromeos/components/fast_pair/common/fast_pair_features.h b/chromeos/components/quick_pair/common/quick_pair_features.h
similarity index 61%
rename from chromeos/components/fast_pair/common/fast_pair_features.h
rename to chromeos/components/quick_pair/common/quick_pair_features.h
index 1b52bf8f..03d0bbe 100644
--- a/chromeos/components/fast_pair/common/fast_pair_features.h
+++ b/chromeos/components/quick_pair/common/quick_pair_features.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROMEOS_COMPONENTS_FAST_PAIR_COMMON_FAST_PAIR_FEATURES_H_
-#define CHROMEOS_COMPONENTS_FAST_PAIR_COMMON_FAST_PAIR_FEATURES_H_
+#ifndef CHROMEOS_COMPONENTS_QUICK_PAIR_COMMON_QUICK_PAIR_FEATURES_H_
+#define CHROMEOS_COMPONENTS_QUICK_PAIR_COMMON_QUICK_PAIR_FEATURES_H_
 
 #include "base/feature_list.h"
 
@@ -15,4 +15,4 @@
 }  // namespace features
 }  // namespace chromeos
 
-#endif  // CHROMEOS_COMPONENTS_FAST_PAIR_COMMON_FAST_PAIR_FEATURES_H_
+#endif  // CHROMEOS_COMPONENTS_QUICK_PAIR_COMMON_QUICK_PAIR_FEATURES_H_
diff --git a/components/android_autofill/browser/android_autofill_manager.cc b/components/android_autofill/browser/android_autofill_manager.cc
index 30ffb72..3a055d3 100644
--- a/components/android_autofill/browser/android_autofill_manager.cc
+++ b/components/android_autofill/browser/android_autofill_manager.cc
@@ -153,4 +153,12 @@
   return nullptr;
 }
 
+void AndroidAutofillManager::SendFormDataToRenderer(
+    int query_id,
+    AutofillDriver::RendererFormDataAction action,
+    const FormData& form) {
+  driver()->SendFormDataToRenderer(query_id, action, form,
+                                   form.main_frame_origin, {});
+}
+
 }  // namespace autofill
diff --git a/components/android_autofill/browser/android_autofill_manager.h b/components/android_autofill/browser/android_autofill_manager.h
index c6f6055f..7e45288 100644
--- a/components/android_autofill/browser/android_autofill_manager.h
+++ b/components/android_autofill/browser/android_autofill_manager.h
@@ -42,6 +42,11 @@
 
   bool has_server_prediction() const { return has_server_prediction_; }
 
+  // Send the |form| to the renderer for the specified |action|.
+  void SendFormDataToRenderer(int query_id,
+                              AutofillDriver::RendererFormDataAction action,
+                              const FormData& form);
+
  protected:
   AndroidAutofillManager(
       AutofillDriver* driver,
diff --git a/components/autofill/content/browser/BUILD.gn b/components/autofill/content/browser/BUILD.gn
index 2cb8cb1f..eef8a85c 100644
--- a/components/autofill/content/browser/BUILD.gn
+++ b/components/autofill/content/browser/BUILD.gn
@@ -12,6 +12,8 @@
     "content_autofill_driver.h",
     "content_autofill_driver_factory.cc",
     "content_autofill_driver_factory.h",
+    "content_autofill_router.cc",
+    "content_autofill_router.h",
     "key_press_handler_manager.cc",
     "key_press_handler_manager.h",
     "risk/fingerprint.cc",
@@ -47,6 +49,7 @@
     "//services/device/public/mojom",
     "//services/service_manager/public/cpp",
     "//sql",
+    "//third_party/abseil-cpp:absl",
     "//ui/base",
     "//ui/display",
     "//ui/gfx",
diff --git a/components/autofill/content/browser/autofill_internals_log_router_unittest.cc b/components/autofill/content/browser/autofill_internals_log_router_unittest.cc
index fdb6ff2..186c2fdb 100644
--- a/components/autofill/content/browser/autofill_internals_log_router_unittest.cc
+++ b/components/autofill/content/browser/autofill_internals_log_router_unittest.cc
@@ -23,7 +23,7 @@
  public:
   MockLogReceiver() {}
 
-  MOCK_METHOD1(LogEntry, void(const base::Value&));
+  MOCK_METHOD(void, LogEntry, (const base::Value&), (override));
 };
 
 }  // namespace
diff --git a/components/autofill/content/browser/content_autofill_driver.cc b/components/autofill/content/browser/content_autofill_driver.cc
index c8fc16eb..9fdf9a4 100644
--- a/components/autofill/content/browser/content_autofill_driver.cc
+++ b/components/autofill/content/browser/content_autofill_driver.cc
@@ -7,12 +7,12 @@
 #include <memory>
 #include <tuple>
 #include <utility>
-#include <vector>
 
 #include "base/feature_list.h"
 #include "base/metrics/histogram_macros.h"
 #include "build/build_config.h"
 #include "components/autofill/content/browser/content_autofill_driver_factory.h"
+#include "components/autofill/content/browser/content_autofill_router.h"
 #include "components/autofill/core/browser/autofill_client.h"
 #include "components/autofill/core/browser/browser_autofill_manager.h"
 #include "components/autofill/core/browser/form_structure.h"
@@ -73,10 +73,12 @@
     content::RenderFrameHost* render_frame_host,
     AutofillClient* client,
     const std::string& app_locale,
+    ContentAutofillRouter* autofill_router,
     AutofillManager::AutofillDownloadManagerState enable_download_manager,
     AutofillManager::AutofillManagerFactoryCallback
         autofill_manager_factory_callback)
     : render_frame_host_(render_frame_host),
+      autofill_router_(autofill_router),
       browser_autofill_manager_(nullptr),
       key_press_handler_manager_(this),
       log_manager_(client->GetLogManager()) {
@@ -168,9 +170,45 @@
   return authenticator_impl_.get();
 }
 
+void ContentAutofillDriver::PopupHidden() {
+  // If the unmask prompt is shown, keep showing the preview. The preview
+  // will be cleared when the prompt closes.
+  if (browser_autofill_manager_ &&
+      browser_autofill_manager_->ShouldClearPreviewedForm()) {
+    RendererShouldClearPreviewedForm();
+  }
+}
+
+gfx::RectF ContentAutofillDriver::TransformBoundingBoxToViewportCoordinates(
+    const gfx::RectF& bounding_box) {
+  content::RenderWidgetHostView* view = render_frame_host_->GetView();
+  if (!view)
+    return bounding_box;
+
+  gfx::PointF orig_point(bounding_box.x(), bounding_box.y());
+  gfx::PointF transformed_point =
+      view->TransformPointToRootCoordSpaceF(orig_point);
+  return gfx::RectF(transformed_point.x(), transformed_point.y(),
+                    bounding_box.width(), bounding_box.height());
+}
+
+net::IsolationInfo ContentAutofillDriver::IsolationInfo() {
+  return render_frame_host_->GetIsolationInfoForSubresources();
+}
+
 void ContentAutofillDriver::SendFormDataToRenderer(
     int query_id,
     RendererFormDataAction action,
+    const FormData& data,
+    const url::Origin& triggered_origin,
+    const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map) {
+  autofill_router_->SendFormDataToRenderer(this, query_id, action, data,
+                                           triggered_origin, field_type_map);
+}
+
+void ContentAutofillDriver::SendFormDataToRendererImpl(
+    int query_id,
+    RendererFormDataAction action,
     const FormData& data) {
   if (!RendererIsAvailable())
     return;
@@ -199,26 +237,21 @@
   // No op.
 }
 
-void ContentAutofillDriver::SendAutofillTypePredictionsToRenderer(
-    const std::vector<FormStructure*>& forms) {
+void ContentAutofillDriver::SendAutofillTypePredictionsToRendererImpl(
+    const std::vector<FormDataPredictions>& type_predictions) {
   if (!RendererIsAvailable())
     return;
-  // TODO(crbug.com/1185232) Send the FormDataPredictions object only if the
-  // debugging flag is enabled.
-  std::vector<FormDataPredictions> type_predictions =
-      FormStructure::GetFieldTypePredictions(forms);
   GetAutofillAgent()->FieldTypePredictionsAvailable(type_predictions);
 }
 
-void ContentAutofillDriver::SendFieldsEligibleForManualFillingToRenderer(
+void ContentAutofillDriver::SendFieldsEligibleForManualFillingToRendererImpl(
     const std::vector<FieldRendererId>& fields) {
   if (!RendererIsAvailable())
     return;
-
   GetAutofillAgent()->SetFieldsEligibleForManualFilling(fields);
 }
 
-void ContentAutofillDriver::RendererShouldAcceptDataListSuggestion(
+void ContentAutofillDriver::RendererShouldAcceptDataListSuggestionImpl(
     const FieldGlobalId& field,
     const std::u16string& value) {
   if (!RendererIsAvailable())
@@ -226,19 +259,19 @@
   GetAutofillAgent()->AcceptDataListSuggestion(field.renderer_id, value);
 }
 
-void ContentAutofillDriver::RendererShouldClearFilledSection() {
+void ContentAutofillDriver::RendererShouldClearFilledSectionImpl() {
   if (!RendererIsAvailable())
     return;
   GetAutofillAgent()->ClearSection();
 }
 
-void ContentAutofillDriver::RendererShouldClearPreviewedForm() {
+void ContentAutofillDriver::RendererShouldClearPreviewedFormImpl() {
   if (!RendererIsAvailable())
     return;
   GetAutofillAgent()->ClearPreviewedForm();
 }
 
-void ContentAutofillDriver::RendererShouldFillFieldWithValue(
+void ContentAutofillDriver::RendererShouldFillFieldWithValueImpl(
     const FieldGlobalId& field,
     const std::u16string& value) {
   if (!RendererIsAvailable())
@@ -246,7 +279,7 @@
   GetAutofillAgent()->FillFieldWithValue(field.renderer_id, value);
 }
 
-void ContentAutofillDriver::RendererShouldPreviewFieldWithValue(
+void ContentAutofillDriver::RendererShouldPreviewFieldWithValueImpl(
     const FieldGlobalId& field,
     const std::u16string& value) {
   if (!RendererIsAvailable())
@@ -254,7 +287,7 @@
   GetAutofillAgent()->PreviewFieldWithValue(field.renderer_id, value);
 }
 
-void ContentAutofillDriver::RendererShouldSetSuggestionAvailability(
+void ContentAutofillDriver::RendererShouldSetSuggestionAvailabilityImpl(
     const FieldGlobalId& field,
     const mojom::AutofillState state) {
   if (!RendererIsAvailable())
@@ -262,56 +295,65 @@
   GetAutofillAgent()->SetSuggestionAvailability(field.renderer_id, state);
 }
 
-void ContentAutofillDriver::PopupHidden() {
-  // If the unmask prompt is showing, keep showing the preview. The preview
-  // will be cleared when the prompt closes.
-  if (browser_autofill_manager_ &&
-      browser_autofill_manager_->ShouldClearPreviewedForm())
-    RendererShouldClearPreviewedForm();
+void ContentAutofillDriver::SendAutofillTypePredictionsToRenderer(
+    const std::vector<FormStructure*>& forms) {
+  std::vector<FormDataPredictions> type_predictions =
+      FormStructure::GetFieldTypePredictions(forms);
+  // TODO(crbug.com/1185232) Send the FormDataPredictions object only if the
+  // debugging flag is enabled.
+  autofill_router_->SendAutofillTypePredictionsToRenderer(this,
+                                                          type_predictions);
 }
 
-gfx::RectF ContentAutofillDriver::TransformBoundingBoxToViewportCoordinates(
-    const gfx::RectF& bounding_box) {
-  content::RenderWidgetHostView* view = render_frame_host_->GetView();
-  if (!view)
-    return bounding_box;
-
-  gfx::PointF orig_point(bounding_box.x(), bounding_box.y());
-  gfx::PointF transformed_point =
-      view->TransformPointToRootCoordSpaceF(orig_point);
-  return gfx::RectF(transformed_point.x(), transformed_point.y(),
-                    bounding_box.width(), bounding_box.height());
+void ContentAutofillDriver::SendFieldsEligibleForManualFillingToRenderer(
+    const std::vector<FieldGlobalId>& fields) {
+  autofill_router_->SendFieldsEligibleForManualFillingToRenderer(this, fields);
 }
 
-net::IsolationInfo ContentAutofillDriver::IsolationInfo() {
-  return render_frame_host_->GetPendingIsolationInfoForSubresources();
+void ContentAutofillDriver::RendererShouldAcceptDataListSuggestion(
+    const FieldGlobalId& field,
+    const std::u16string& value) {
+  autofill_router_->RendererShouldAcceptDataListSuggestion(this, field, value);
 }
 
-void ContentAutofillDriver::SetFormToBeProbablySubmitted(
-    const absl::optional<FormData>& raw_form) {
-  potentially_submitted_form_ =
-      raw_form ? absl::make_optional<FormData>(
-                     GetFormWithFrameAndFormMetaData(*raw_form))
-               : absl::nullopt;
+void ContentAutofillDriver::RendererShouldClearFilledSection() {
+  autofill_router_->RendererShouldClearFilledSection(this);
 }
 
-void ContentAutofillDriver::FormsSeen(const std::vector<FormData>& raw_forms) {
-  std::vector<FormData> forms = raw_forms;
-  for (auto& form : forms)
-    SetFrameAndFormMetaData(form);
+void ContentAutofillDriver::RendererShouldClearPreviewedForm() {
+  autofill_router_->RendererShouldClearPreviewedForm(this);
+}
+
+void ContentAutofillDriver::RendererShouldFillFieldWithValue(
+    const FieldGlobalId& field,
+    const std::u16string& value) {
+  autofill_router_->RendererShouldFillFieldWithValue(this, field, value);
+}
+
+void ContentAutofillDriver::RendererShouldPreviewFieldWithValue(
+    const FieldGlobalId& field,
+    const std::u16string& value) {
+  autofill_router_->RendererShouldPreviewFieldWithValue(this, field, value);
+}
+
+void ContentAutofillDriver::RendererShouldSetSuggestionAvailability(
+    const FieldGlobalId& field,
+    const mojom::AutofillState state) {
+  autofill_router_->RendererShouldSetSuggestionAvailability(this, field, state);
+}
+
+void ContentAutofillDriver::FormsSeenImpl(const std::vector<FormData>& forms) {
   autofill_manager_->OnFormsSeen(forms);
 }
 
-void ContentAutofillDriver::ProbablyFormSubmitted() {
-  if (potentially_submitted_form_.has_value()) {
-    FormSubmitted(potentially_submitted_form_.value(), false,
-                  mojom::SubmissionSource::PROBABLY_FORM_SUBMITTED);
-  }
+void ContentAutofillDriver::SetFormToBeProbablySubmittedImpl(
+    const absl::optional<FormData>& form) {
+  potentially_submitted_form_ = form;
 }
 
-void ContentAutofillDriver::FormSubmitted(const FormData& raw_form,
-                                          bool known_success,
-                                          mojom::SubmissionSource source) {
+void ContentAutofillDriver::FormSubmittedImpl(const FormData& form,
+                                              bool known_success,
+                                              mojom::SubmissionSource source) {
   // Omit duplicate form submissions. It may be reasonable to take |source|
   // into account here as well.
   // TODO(crbug/1117451): Clean up experiment code.
@@ -319,20 +361,115 @@
           features::kAutofillProbableFormSubmissionInBrowser) &&
       !base::FeatureList::IsEnabled(
           features::kAutofillAllowDuplicateFormSubmissions) &&
-      !submitted_forms_.insert(raw_form.unique_renderer_id).second) {
+      !submitted_forms_.insert(form.global_id()).second) {
     return;
   }
 
-  autofill_manager_->OnFormSubmitted(GetFormWithFrameAndFormMetaData(raw_form),
-                                     known_success, source);
+  autofill_manager_->OnFormSubmitted(form, known_success, source);
+}
+
+void ContentAutofillDriver::TextFieldDidChangeImpl(
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box,
+    base::TimeTicks timestamp) {
+  autofill_manager_->OnTextFieldDidChange(form, field, bounding_box, timestamp);
+}
+
+void ContentAutofillDriver::TextFieldDidScrollImpl(
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box) {
+  autofill_manager_->OnTextFieldDidScroll(form, field, bounding_box);
+}
+
+void ContentAutofillDriver::SelectControlDidChangeImpl(
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box) {
+  autofill_manager_->OnSelectControlDidChange(form, field, bounding_box);
+}
+
+void ContentAutofillDriver::QueryFormFieldAutofillImpl(
+    int32_t id,
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box,
+    bool autoselect_first_suggestion) {
+  autofill_manager_->OnQueryFormFieldAutofill(id, form, field, bounding_box,
+                                              autoselect_first_suggestion);
+}
+
+void ContentAutofillDriver::HidePopupImpl() {
+  autofill_manager_->OnHidePopup();
+}
+
+void ContentAutofillDriver::FocusNoLongerOnFormImpl(bool had_interacted_form) {
+  autofill_manager_->OnFocusNoLongerOnForm(had_interacted_form);
+}
+
+void ContentAutofillDriver::FocusOnFormFieldImpl(
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box) {
+  autofill_manager_->OnFocusOnFormField(form, field, bounding_box);
+}
+
+void ContentAutofillDriver::DidFillAutofillFormDataImpl(
+    const FormData& form,
+    base::TimeTicks timestamp) {
+  autofill_manager_->OnDidFillAutofillFormData(form, timestamp);
+}
+
+void ContentAutofillDriver::DidPreviewAutofillFormDataImpl() {
+  autofill_manager_->OnDidPreviewAutofillFormData();
+}
+
+void ContentAutofillDriver::DidEndTextFieldEditingImpl() {
+  autofill_manager_->OnDidEndTextFieldEditing();
+}
+
+void ContentAutofillDriver::SelectFieldOptionsDidChangeImpl(
+    const FormData& form) {
+  autofill_manager_->SelectFieldOptionsDidChange(form);
+}
+
+void ContentAutofillDriver::ProbablyFormSubmitted() {
+  if (potentially_submitted_form_.has_value()) {
+    autofill_router_->FormSubmitted(
+        this, potentially_submitted_form_.value(), false,
+        mojom::SubmissionSource::PROBABLY_FORM_SUBMITTED);
+  }
+}
+
+void ContentAutofillDriver::SetFormToBeProbablySubmitted(
+    const absl::optional<FormData>& form) {
+  autofill_router_->SetFormToBeProbablySubmitted(
+      this, form ? absl::make_optional<FormData>(
+                       GetFormWithFrameAndFormMetaData(*form))
+                 : absl::nullopt);
+}
+
+void ContentAutofillDriver::FormsSeen(const std::vector<FormData>& raw_forms) {
+  std::vector<FormData> forms = raw_forms;
+  for (FormData& form : forms)
+    SetFrameAndFormMetaData(form);
+  autofill_router_->FormsSeen(this, forms);
+}
+
+void ContentAutofillDriver::FormSubmitted(const FormData& raw_form,
+                                          bool known_success,
+                                          mojom::SubmissionSource source) {
+  FormData form = GetFormWithFrameAndFormMetaData(raw_form);
+  autofill_router_->FormSubmitted(this, form, known_success, source);
 }
 
 void ContentAutofillDriver::TextFieldDidChange(const FormData& raw_form,
                                                const FormFieldData& raw_field,
                                                const gfx::RectF& bounding_box,
                                                base::TimeTicks timestamp) {
-  autofill_manager_->OnTextFieldDidChange(
-      GetFormWithFrameAndFormMetaData(raw_form),
+  autofill_router_->TextFieldDidChange(
+      this, GetFormWithFrameAndFormMetaData(raw_form),
       GetFieldWithFrameAndFormMetaData(raw_form, raw_field), bounding_box,
       timestamp);
 }
@@ -340,8 +477,8 @@
 void ContentAutofillDriver::TextFieldDidScroll(const FormData& raw_form,
                                                const FormFieldData& raw_field,
                                                const gfx::RectF& bounding_box) {
-  autofill_manager_->OnTextFieldDidScroll(
-      GetFormWithFrameAndFormMetaData(raw_form),
+  autofill_router_->TextFieldDidScroll(
+      this, GetFormWithFrameAndFormMetaData(raw_form),
       GetFieldWithFrameAndFormMetaData(raw_form, raw_field), bounding_box);
 }
 
@@ -349,8 +486,8 @@
     const FormData& raw_form,
     const FormFieldData& raw_field,
     const gfx::RectF& bounding_box) {
-  autofill_manager_->OnSelectControlDidChange(
-      GetFormWithFrameAndFormMetaData(raw_form),
+  autofill_router_->SelectControlDidChange(
+      this, GetFormWithFrameAndFormMetaData(raw_form),
       GetFieldWithFrameAndFormMetaData(raw_form, raw_field), bounding_box);
 }
 
@@ -360,46 +497,46 @@
     const FormFieldData& raw_field,
     const gfx::RectF& bounding_box,
     bool autoselect_first_suggestion) {
-  autofill_manager_->OnQueryFormFieldAutofill(
-      id, GetFormWithFrameAndFormMetaData(raw_form),
+  autofill_router_->QueryFormFieldAutofill(
+      this, id, GetFormWithFrameAndFormMetaData(raw_form),
       GetFieldWithFrameAndFormMetaData(raw_form, raw_field), bounding_box,
       autoselect_first_suggestion);
 }
 
 void ContentAutofillDriver::HidePopup() {
-  autofill_manager_->OnHidePopup();
+  autofill_router_->HidePopup(this);
 }
 
 void ContentAutofillDriver::FocusNoLongerOnForm(bool had_interacted_form) {
-  autofill_manager_->OnFocusNoLongerOnForm(had_interacted_form);
+  autofill_router_->FocusNoLongerOnForm(this, had_interacted_form);
 }
 
 void ContentAutofillDriver::FocusOnFormField(const FormData& raw_form,
                                              const FormFieldData& raw_field,
                                              const gfx::RectF& bounding_box) {
-  autofill_manager_->OnFocusOnFormField(
-      GetFormWithFrameAndFormMetaData(raw_form),
+  autofill_router_->FocusOnFormField(
+      this, GetFormWithFrameAndFormMetaData(raw_form),
       GetFieldWithFrameAndFormMetaData(raw_form, raw_field), bounding_box);
 }
 
 void ContentAutofillDriver::DidFillAutofillFormData(const FormData& raw_form,
                                                     base::TimeTicks timestamp) {
-  autofill_manager_->OnDidFillAutofillFormData(
-      GetFormWithFrameAndFormMetaData(raw_form), timestamp);
+  autofill_router_->DidFillAutofillFormData(
+      this, GetFormWithFrameAndFormMetaData(raw_form), timestamp);
 }
 
 void ContentAutofillDriver::DidPreviewAutofillFormData() {
-  autofill_manager_->OnDidPreviewAutofillFormData();
+  autofill_router_->DidPreviewAutofillFormData(this);
 }
 
 void ContentAutofillDriver::DidEndTextFieldEditing() {
-  autofill_manager_->OnDidEndTextFieldEditing();
+  autofill_router_->DidEndTextFieldEditing(this);
 }
 
 void ContentAutofillDriver::SelectFieldOptionsDidChange(
     const FormData& raw_form) {
-  autofill_manager_->SelectFieldOptionsDidChange(
-      GetFormWithFrameAndFormMetaData(raw_form));
+  autofill_router_->SelectFieldOptionsDidChange(
+      this, GetFormWithFrameAndFormMetaData(raw_form));
 }
 
 void ContentAutofillDriver::DidNavigateFrame(
@@ -435,8 +572,8 @@
       static_cast<BrowserAutofillManager*>(autofill_manager_.get());
 }
 
-ContentAutofillDriver::ContentAutofillDriver()
-    : render_frame_host_(nullptr),
+ContentAutofillDriver::ContentAutofillDriver(content::RenderFrameHost* rfh)
+    : render_frame_host_(rfh),
       browser_autofill_manager_(nullptr),
       key_press_handler_manager_(this),
       log_manager_(nullptr) {}
@@ -454,10 +591,19 @@
 
 void ContentAutofillDriver::RegisterKeyPressHandler(
     const content::RenderWidgetHost::KeyPressEventCallback& handler) {
-  key_press_handler_manager_.RegisterKeyPressHandler(handler);
+  autofill_router_->RegisterKeyPressHandler(this, handler);
 }
 
 void ContentAutofillDriver::RemoveKeyPressHandler() {
+  autofill_router_->RemoveKeyPressHandler(this);
+}
+
+void ContentAutofillDriver::RegisterKeyPressHandlerImpl(
+    const content::RenderWidgetHost::KeyPressEventCallback& handler) {
+  key_press_handler_manager_.RegisterKeyPressHandler(handler);
+}
+
+void ContentAutofillDriver::RemoveKeyPressHandlerImpl() {
   key_press_handler_manager_.RemoveKeyPressHandler();
 }
 
diff --git a/components/autofill/content/browser/content_autofill_driver.h b/components/autofill/content/browser/content_autofill_driver.h
index 15af78f..84f52a6 100644
--- a/components/autofill/content/browser/content_autofill_driver.h
+++ b/components/autofill/content/browser/content_autofill_driver.h
@@ -17,9 +17,12 @@
 #include "components/autofill/content/common/mojom/autofill_driver.mojom.h"
 #include "components/autofill/core/browser/autofill_driver.h"
 #include "components/autofill/core/browser/browser_autofill_manager.h"
+#include "components/autofill/core/common/form_data_predictions.h"
+#include "content/public/browser/render_frame_host.h"
 #include "mojo/public/cpp/bindings/associated_receiver.h"
 #include "mojo/public/cpp/bindings/associated_remote.h"
 #include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "third_party/abseil-cpp/absl/types/optional.h"
 
 namespace content {
 class NavigationHandle;
@@ -29,6 +32,7 @@
 namespace autofill {
 
 class AutofillClient;
+class ContentAutofillRouter;
 class LogManager;
 
 // Use <Phone><WebOTP><OTC> as the bit pattern to identify the metrics state.
@@ -50,9 +54,64 @@
 constexpr uint32_t kPhoneCollected = 1 << 2;
 }  // namespace phone_collection_metric
 
-// Class that drives autofill flow in the browser process based on
-// communication from the renderer and from the external world. There is one
+// ContentAutofillDriver drives the autofill flow in the browser process based
+// on communication from the renderer and from the external world. There is one
 // instance per RenderFrameHost.
+//
+// Events in AutofillDriver and mojom::AutofillDriver are passed on to
+// ContentAutofillRouter, which has one instance per WebContents. The naming
+// pattern is that for all of these events, there are three functions:
+//
+//   1. ReturnType ContentAutofillDriver::f(Args...)
+//   2. ReturnType ContentAutofillRouter::f(ContentAutofillDriver*, Args...)
+//   3. ReturnType ContentAutofillDriver::fImpl(Args...)
+//
+// The first function calls the second, and the second calls the third, perhaps
+// for a different ContentAutofillDriver.
+//
+// Consider the following pseudo-HTML:
+//   <!-- frame name "ABC" -->
+//   <form>
+//     <input> <!-- renderer_id = 12 -->
+//     <input> <!-- renderer_id = 34 -->
+//     <iframe name="DEF">
+//       <input> <!-- renderer_id = 56 -->
+//       <input> <!-- renderer_id = 78 -->
+//     </iframe>
+//   </form>
+// In this case, the frame "ABC" holds a form with fields
+//   FormFieldData{.host_frame = ABC, .renderer_id = 12, ...},
+//   FormFieldData{.host_frame = ABC, .renderer_id = 34, ...},
+// and the frame "DEF" holds a form with fields
+//   FormFieldData{.host_frame = DEF, .renderer_id = 56, ...},
+//   FormFieldData{.host_frame = DEF, .renderer_id = 78, ...}.
+// The SendFieldsEligibleForManualFillingToRenderer() event, for example, is
+// initiated by ABC's AutofillManager by calling
+//   abc_driver->SendFieldsEligibleForManualFillingToRenderer({
+//     FieldGlobalId{.host_frame = ABC, .renderer_id = 12},
+//     FieldGlobalId{.host_frame = ABC, .renderer_id = 34},
+//     FieldGlobalId{.host_frame = DEF, .renderer_id = 56},
+//     FieldGlobalId{.host_frame = DEF, .renderer_id = 78}
+//   }).
+// |abc_driver| forwards the event to the router by calling
+//   router->SendFieldsEligibleForManualFillingToRenderer(abc_driver, {
+//     FieldGlobalId{.host_frame = ABC, .renderer_id = 12},
+//     FieldGlobalId{.host_frame = ABC, .renderer_id = 34},
+//     FieldGlobalId{.host_frame = DEF, .renderer_id = 56},
+//     FieldGlobalId{.host_frame = DEF, .renderer_id = 78}
+//   }).
+// The router splits the groups the fields by their host frame token and routes
+// the calls to the respective frame's drivers:
+//   abc_driver->SendFieldsEligibleForManualFillingToRendererImpl({
+//     FieldRendererId{.renderer_id = 12},
+//     FieldRendererId{.renderer_id = 34},
+//   });
+//   def_driver->SendFieldsEligibleForManualFillingToRendererImpl({
+//     FieldRendererId{.renderer_id = 56},
+//     FieldRendererId{.renderer_id = 78}
+//   });
+//
+// See ContentAutofillRouter for further details.
 class ContentAutofillDriver : public AutofillDriver,
                               public mojom::AutofillDriver,
                               public KeyPressHandlerManager::Delegate {
@@ -61,9 +120,12 @@
       content::RenderFrameHost* render_frame_host,
       AutofillClient* client,
       const std::string& app_locale,
+      ContentAutofillRouter* autofill_router,
       AutofillManager::AutofillDownloadManagerState enable_download_manager,
       AutofillManager::AutofillManagerFactoryCallback
           autofill_manager_factory_callback);
+  ContentAutofillDriver(const ContentAutofillDriver&) = delete;
+  ContentAutofillDriver& operator=(const ContentAutofillDriver&) = delete;
   ~ContentAutofillDriver() override;
 
   // Gets the driver for |render_frame_host|.
@@ -81,12 +143,24 @@
   scoped_refptr<network::SharedURLLoaderFactory> GetURLLoaderFactory() override;
   bool RendererIsAvailable() override;
   InternalAuthenticator* GetOrCreateCreditCardInternalAuthenticator() override;
-  void SendFormDataToRenderer(int query_id,
-                              RendererFormDataAction action,
-                              const FormData& data) override;
   void PropagateAutofillPredictions(
       const std::vector<autofill::FormStructure*>& forms) override;
   void HandleParsedForms(const std::vector<const FormData*>& forms) override;
+  void PopupHidden() override;
+  gfx::RectF TransformBoundingBoxToViewportCoordinates(
+      const gfx::RectF& bounding_box) override;
+  net::IsolationInfo IsolationInfo() override;
+
+  // AutofillDriver functions called by the browser.
+  // These events are forwarded to ContentAutofillRouter.
+  // Their implementations (*Impl()) call into mojom::AutofillAgent.
+  void SendFormDataToRenderer(
+      int query_id,
+      RendererFormDataAction action,
+      const FormData& data,
+      const url::Origin& triggered_origin,
+      const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map)
+      override;
   void SendAutofillTypePredictionsToRenderer(
       const std::vector<FormStructure*>& forms) override;
   void RendererShouldAcceptDataListSuggestion(
@@ -102,14 +176,35 @@
   void RendererShouldSetSuggestionAvailability(
       const FieldGlobalId& field_id,
       const mojom::AutofillState state) override;
-  void PopupHidden() override;
-  gfx::RectF TransformBoundingBoxToViewportCoordinates(
-      const gfx::RectF& bounding_box) override;
-  net::IsolationInfo IsolationInfo() override;
   void SendFieldsEligibleForManualFillingToRenderer(
-      const std::vector<FieldRendererId>& fields) override;
+      const std::vector<FieldGlobalId>& fields) override;
 
-  // mojom::AutofillDriver:
+  // Implementations of the AutofillDriver functions called by the browser.
+  // These functions are called by ContentAutofillRouter.
+  void SendFormDataToRendererImpl(int query_id,
+                                  RendererFormDataAction action,
+                                  const FormData& data);
+  void SendAutofillTypePredictionsToRendererImpl(
+      const std::vector<FormDataPredictions>& forms);
+  void RendererShouldAcceptDataListSuggestionImpl(const FieldGlobalId& field,
+                                                  const std::u16string& value);
+  void RendererShouldClearFilledSectionImpl();
+  void RendererShouldClearPreviewedFormImpl();
+  void RendererShouldFillFieldWithValueImpl(const FieldGlobalId& field,
+                                            const std::u16string& value);
+  void RendererShouldPreviewFieldWithValueImpl(const FieldGlobalId& field,
+                                               const std::u16string& value);
+  void RendererShouldSetSuggestionAvailabilityImpl(
+      const FieldGlobalId& field,
+      const mojom::AutofillState state);
+  void SendFieldsEligibleForManualFillingToRendererImpl(
+      const std::vector<FieldRendererId>& fields);
+
+  void ProbablyFormSubmitted();
+
+  // mojom::AutofillDriver functions called by the renderer.
+  // These events are forwarded to ContentAutofillRouter.
+  // Their implementations (*Impl()) call into AutofillManager.
   void SetFormToBeProbablySubmitted(
       const absl::optional<FormData>& form) override;
   void FormsSeen(const std::vector<FormData>& forms) override;
@@ -142,7 +237,38 @@
   void DidEndTextFieldEditing() override;
   void SelectFieldOptionsDidChange(const FormData& form) override;
 
-  void ProbablyFormSubmitted();
+  // Implementations of the mojom::AutofillDriver functions called by the
+  // browser. These functions are called by ContentAutofillRouter.
+  void SetFormToBeProbablySubmittedImpl(const absl::optional<FormData>& form);
+  void FormsSeenImpl(const std::vector<FormData>& forms);
+  void FormSubmittedImpl(const FormData& form,
+                         bool known_success,
+                         mojom::SubmissionSource source);
+  void TextFieldDidChangeImpl(const FormData& form,
+                              const FormFieldData& field,
+                              const gfx::RectF& bounding_box,
+                              base::TimeTicks timestamp);
+  void TextFieldDidScrollImpl(const FormData& form,
+                              const FormFieldData& field,
+                              const gfx::RectF& bounding_box);
+  void SelectControlDidChangeImpl(const FormData& form,
+                                  const FormFieldData& field,
+                                  const gfx::RectF& bounding_box);
+  void QueryFormFieldAutofillImpl(int32_t id,
+                                  const FormData& form,
+                                  const FormFieldData& field,
+                                  const gfx::RectF& bounding_box,
+                                  bool autoselect_first_suggestion);
+  void HidePopupImpl();
+  void FocusNoLongerOnFormImpl(bool had_interacted_form);
+  void FocusOnFormFieldImpl(const FormData& form,
+                            const FormFieldData& field,
+                            const gfx::RectF& bounding_box);
+  void DidFillAutofillFormDataImpl(const FormData& form,
+                                   base::TimeTicks timestamp);
+  void DidPreviewAutofillFormDataImpl();
+  void DidEndTextFieldEditingImpl();
+  void SelectFieldOptionsDidChangeImpl(const FormData& form);
 
   // DidNavigateFrame() is called on the frame's driver, respectively, when a
   // navigation occurs in that specific frame.
@@ -156,10 +282,14 @@
 
   const mojo::AssociatedRemote<mojom::AutofillAgent>& GetAutofillAgent();
 
-  // Methods forwarded to key_press_handler_manager_.
+  // Methods forwarded to |key_press_handler_manager_|. ContentAutofillRouter
+  // forwards them to ContentAutofillRouter::last_queried_source().
   void RegisterKeyPressHandler(
       const content::RenderWidgetHost::KeyPressEventCallback& handler);
   void RemoveKeyPressHandler();
+  void RegisterKeyPressHandlerImpl(
+      const content::RenderWidgetHost::KeyPressEventCallback& handler);
+  void RemoveKeyPressHandlerImpl();
 
   // Sets the manager to |manager|. Takes ownership of |manager|.
   void SetBrowserAutofillManager(
@@ -178,7 +308,7 @@
 
  protected:
   // Constructor for TestAutofillDriver.
-  ContentAutofillDriver();
+  explicit ContentAutofillDriver(content::RenderFrameHost* rfh = nullptr);
 
  private:
   friend class ContentAutofillDriverTestApi;
@@ -216,7 +346,10 @@
 
   // Weak ref to the RenderFrameHost the driver is associated with. Should
   // always be non-NULL and valid for lifetime of |this|.
-  content::RenderFrameHost* const render_frame_host_;
+  content::RenderFrameHost* const render_frame_host_ = nullptr;
+
+  // Weak ref to the AutofillRouter associated with the WebContents.
+  ContentAutofillRouter* autofill_router_ = nullptr;
 
   // The form pushed from the AutofillAgent to the AutofillDriver. When the
   // ProbablyFormSubmitted() event is fired, this form is considered the
@@ -225,7 +358,7 @@
 
   // Keeps track of the forms for which FormSubmitted() event has been triggered
   // to avoid duplicates fired by AutofillAgent.
-  std::set<FormRendererId> submitted_forms_;
+  std::set<FormGlobalId> submitted_forms_;
 
   // AutofillManager instance via which this object drives the shared Autofill
   // code.
diff --git a/components/autofill/content/browser/content_autofill_driver_factory.cc b/components/autofill/content/browser/content_autofill_driver_factory.cc
index 34d4ea9..17b7c6f 100644
--- a/components/autofill/content/browser/content_autofill_driver_factory.cc
+++ b/components/autofill/content/browser/content_autofill_driver_factory.cc
@@ -28,12 +28,13 @@
     content::RenderFrameHost* render_frame_host,
     AutofillClient* client,
     const std::string& app_locale,
+    ContentAutofillRouter* router,
     BrowserAutofillManager::AutofillDownloadManagerState
         enable_download_manager,
     AutofillManager::AutofillManagerFactoryCallback
         autofill_manager_factory_callback) {
   return std::make_unique<ContentAutofillDriver>(
-      render_frame_host, client, app_locale, enable_download_manager,
+      render_frame_host, client, app_locale, router, enable_download_manager,
       std::move(autofill_manager_factory_callback));
 }
 
@@ -43,7 +44,7 @@
     kContentAutofillDriverFactoryWebContentsUserDataKey[] =
         "web_contents_autofill_driver_factory";
 
-ContentAutofillDriverFactory::~ContentAutofillDriverFactory() {}
+ContentAutofillDriverFactory::~ContentAutofillDriverFactory() = default;
 
 // static
 void ContentAutofillDriverFactory::CreateForWebContentsAndDelegate(
@@ -127,10 +128,11 @@
 
   // ContentAutofillDriver are created on demand here.
   if (!driver) {
-    AddForKey(render_frame_host,
-              base::BindRepeating(CreateDriver, render_frame_host, client(),
-                                  app_locale_, enable_download_manager_,
-                                  autofill_manager_factory_callback_));
+    AddForKey(
+        render_frame_host,
+        base::BindRepeating(CreateDriver, render_frame_host, client(),
+                            app_locale_, &router_, enable_download_manager_,
+                            autofill_manager_factory_callback_));
     driver = DriverForKey(render_frame_host);
   }
 
@@ -142,10 +144,26 @@
 
 void ContentAutofillDriverFactory::RenderFrameDeleted(
     content::RenderFrameHost* render_frame_host) {
-  AutofillDriver* driver = DriverForKey(render_frame_host);
+  ContentAutofillDriver* driver =
+      static_cast<ContentAutofillDriver*>(DriverForKey(render_frame_host));
   if (driver) {
-    static_cast<ContentAutofillDriver*>(driver)
-        ->MaybeReportAutofillWebOTPMetrics();
+    driver->MaybeReportAutofillWebOTPMetrics();
+    // If the popup menu has been triggered from within an iframe and that frame
+    // is deleted, hide the popup. This is necessary because the popup may
+    // actually be shown by the AutofillExternalDelegate of an ancestor frame,
+    // which is not notified about |render_frame_host|'s destruction and
+    // therefore won't close the popup.
+    if (render_frame_host->GetParent() &&
+        router_.last_queried_source() == driver) {
+      router_.HidePopup(driver);
+    }
+    if (!render_frame_host->GetParent()) {
+      router_.Reset();
+    } else {
+      // UnregisterDriver() must not be called if |driver| belongs to the main
+      // frame because of crbug/1190640.
+      router_.UnregisterDriver(driver);
+    }
   }
   DeleteForKey(render_frame_host);
 }
@@ -173,9 +191,20 @@
   if (navigation_handle->HasCommitted() &&
       (navigation_handle->IsInMainFrame() ||
        navigation_handle->HasSubframeNavigationEntryCommitted())) {
+    ContentAutofillDriver* driver =
+        DriverForFrame(navigation_handle->GetRenderFrameHost());
+    if (!navigation_handle->IsSameDocument() &&
+        !navigation_handle->IsServedFromBackForwardCache()) {
+      if (navigation_handle->IsInMainFrame()) {
+        router_.Reset();
+      } else {
+        // UnregisterDriver() must not be called if |driver| belongs to the main
+        // frame because of crbug/1190640.
+        router_.UnregisterDriver(driver);
+      }
+    }
     NavigationFinished();
-    DriverForFrame(navigation_handle->GetRenderFrameHost())
-        ->DidNavigateFrame(navigation_handle);
+    driver->DidNavigateFrame(navigation_handle);
   }
 }
 
diff --git a/components/autofill/content/browser/content_autofill_driver_factory.h b/components/autofill/content/browser/content_autofill_driver_factory.h
index 58c3da4..e4a1303 100644
--- a/components/autofill/content/browser/content_autofill_driver_factory.h
+++ b/components/autofill/content/browser/content_autofill_driver_factory.h
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "base/supports_user_data.h"
+#include "components/autofill/content/browser/content_autofill_router.h"
 #include "components/autofill/content/common/mojom/autofill_driver.mojom.h"
 #include "components/autofill/core/browser/autofill_driver_factory.h"
 #include "components/autofill/core/browser/autofill_manager.h"
@@ -40,6 +41,10 @@
       AutofillManager::AutofillManagerFactoryCallback
           autofill_manager_factory_callback);
 
+  ContentAutofillDriverFactory(const ContentAutofillDriver&) = delete;
+  ContentAutofillDriverFactory& operator=(const ContentAutofillDriver&) =
+      delete;
+
   ~ContentAutofillDriverFactory() override;
 
   static void CreateForWebContentsAndDelegate(
@@ -84,6 +89,7 @@
   BrowserAutofillManager::AutofillDownloadManagerState enable_download_manager_;
   AutofillManager::AutofillManagerFactoryCallback
       autofill_manager_factory_callback_;
+  ContentAutofillRouter router_;
 };
 
 }  // namespace autofill
diff --git a/components/autofill/content/browser/content_autofill_driver_unittest.cc b/components/autofill/content/browser/content_autofill_driver_unittest.cc
index 6c4ce813..0eaf377f 100644
--- a/components/autofill/content/browser/content_autofill_driver_unittest.cc
+++ b/components/autofill/content/browser/content_autofill_driver_unittest.cc
@@ -16,6 +16,7 @@
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
+#include "components/autofill/content/browser/content_autofill_router.h"
 #include "components/autofill/core/browser/autofill_external_delegate.h"
 #include "components/autofill/core/browser/autofill_test_utils.h"
 #include "components/autofill/core/browser/browser_autofill_manager.h"
@@ -34,10 +35,17 @@
 #include "net/base/net_errors.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/abseil-cpp/absl/types/optional.h"
 #include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
 
 namespace autofill {
 
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::ElementsAre;
+using ::testing::Return;
+using ::testing::SaveArg;
+
 namespace {
 
 const char kAppLocale[] = "en-US";
@@ -146,8 +154,7 @@
   }
 
   // Mocked mojom::AutofillAgent methods:
-  MOCK_METHOD0(FirstUserGestureObservedInTab, void());
-  MOCK_METHOD0(EnableHeavyFormDataScraping, void());
+  MOCK_METHOD(void, EnableHeavyFormDataScraping, (), (override));
 
  private:
   void CallDone() {
@@ -303,29 +310,29 @@
       : BrowserAutofillManager(driver, client, kAppLocale, kDownloadState) {}
   ~MockBrowserAutofillManager() override {}
 
-  MOCK_METHOD0(Reset, void());
+  MOCK_METHOD(void, Reset, (), (override));
+  MOCK_METHOD(bool, ShouldParseForms, (const std::vector<FormData>&), ());
 };
 
-class MockAutofillClient : public TestAutofillClient {
- public:
-  MOCK_METHOD0(OnFirstUserGestureObserved, void());
-};
+class MockAutofillClient : public TestAutofillClient {};
 
 class TestContentAutofillDriver : public ContentAutofillDriver {
  public:
   TestContentAutofillDriver(content::RenderFrameHost* rfh,
-                            AutofillClient* client)
+                            AutofillClient* client,
+                            ContentAutofillRouter* router)
       : ContentAutofillDriver(
             rfh,
             client,
             kAppLocale,
+            router,
             kDownloadState,
             AutofillManager::AutofillManagerFactoryCallback()) {
-    std::unique_ptr<BrowserAutofillManager> autofill_manager(
+    std::unique_ptr<MockBrowserAutofillManager> autofill_manager(
         new MockBrowserAutofillManager(this, client));
     SetBrowserAutofillManager(std::move(autofill_manager));
   }
-  ~TestContentAutofillDriver() override {}
+  ~TestContentAutofillDriver() override = default;
 
   virtual MockBrowserAutofillManager* mock_browser_autofill_manager() {
     return static_cast<MockBrowserAutofillManager*>(browser_autofill_manager());
@@ -349,8 +356,10 @@
     NavigateAndCommit(GURL("about:blank"));
 
     test_autofill_client_ = std::make_unique<MockAutofillClient>();
+    router_ = std::make_unique<ContentAutofillRouter>();
     driver_ = std::make_unique<TestContentAutofillDriver>(
-        web_contents()->GetMainFrame(), test_autofill_client_.get());
+        web_contents()->GetMainFrame(), test_autofill_client_.get(),
+        router_.get());
 
     blink::AssociatedInterfaceProvider* remote_interfaces =
         web_contents()->GetMainFrame()->GetRemoteAssociatedInterfaces();
@@ -388,6 +397,7 @@
 
  protected:
   std::unique_ptr<MockAutofillClient> test_autofill_client_;
+  std::unique_ptr<ContentAutofillRouter> router_;
   std::unique_ptr<TestContentAutofillDriver> driver_;
 
   FakeAutofillAgent fake_agent_;
@@ -466,8 +476,9 @@
   test::CreateTestAddressFormData(&input_form_data);
   base::RunLoop run_loop;
   fake_agent_.SetQuitLoopClosure(run_loop.QuitClosure());
-  driver_->SendFormDataToRenderer(
-      input_page_id, AutofillDriver::FORM_DATA_ACTION_FILL, input_form_data);
+  driver_->SendFormDataToRenderer(input_page_id,
+                                  AutofillDriver::FORM_DATA_ACTION_FILL,
+                                  input_form_data, url::Origin(), {});
 
   run_loop.RunUntilIdle();
 
@@ -488,8 +499,9 @@
   test::CreateTestAddressFormData(&input_form_data);
   base::RunLoop run_loop;
   fake_agent_.SetQuitLoopClosure(run_loop.QuitClosure());
-  driver_->SendFormDataToRenderer(
-      input_page_id, AutofillDriver::FORM_DATA_ACTION_PREVIEW, input_form_data);
+  driver_->SendFormDataToRenderer(input_page_id,
+                                  AutofillDriver::FORM_DATA_ACTION_PREVIEW,
+                                  input_form_data, url::Origin(), {});
 
   run_loop.RunUntilIdle();
 
@@ -509,14 +521,24 @@
 
   FormData form;
   test::CreateTestAddressFormData(&form);
+
+  std::vector<FormData> augmented_forms;
+  EXPECT_CALL(*driver_->mock_browser_autofill_manager(), ShouldParseForms(_))
+      .WillOnce(DoAll(SaveArg<0>(&augmented_forms), Return(false)));
+  driver_->FormsSeen({form});
+
+  ContentAutofillDriverTestApi(driver_.get()).SetFrameAndFormMetaData(form);
+  ASSERT_EQ(augmented_forms.size(), 1u);
+  EXPECT_TRUE(augmented_forms.front().SameFormAs(form));
+
   FormStructure form_structure(form);
-  std::vector<FormStructure*> forms(1, &form_structure);
+  std::vector<FormStructure*> form_structures(1, &form_structure);
   std::vector<FormDataPredictions> expected_type_predictions =
-      FormStructure::GetFieldTypePredictions(forms);
+      FormStructure::GetFieldTypePredictions(form_structures);
 
   base::RunLoop run_loop;
   fake_agent_.SetQuitLoopClosure(run_loop.QuitClosure());
-  driver_->SendAutofillTypePredictionsToRenderer(forms);
+  driver_->SendAutofillTypePredictionsToRenderer(form_structures);
   run_loop.RunUntilIdle();
 
   std::vector<FormDataPredictions> output_type_predictions;
@@ -606,7 +628,8 @@
         .Times(test_case.heavy_scraping_enabled ? 1 : 0);
 
     std::unique_ptr<ContentAutofillDriver> driver(new TestContentAutofillDriver(
-        web_contents()->GetMainFrame(), test_autofill_client_.get()));
+        web_contents()->GetMainFrame(), test_autofill_client_.get(),
+        router_.get()));
 
     base::RunLoop().RunUntilIdle();
     testing::Mock::VerifyAndClearExpectations(&fake_agent_);
diff --git a/components/autofill/content/browser/content_autofill_router.cc b/components/autofill/content/browser/content_autofill_router.cc
new file mode 100644
index 0000000..b361f13
--- /dev/null
+++ b/components/autofill/content/browser/content_autofill_router.cc
@@ -0,0 +1,304 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/autofill/content/browser/content_autofill_router.h"
+
+#include <algorithm>
+
+#include "base/functional/invoke.h"
+#include "base/ranges/algorithm.h"
+#include "components/autofill/content/browser/content_autofill_driver.h"
+#include "components/autofill/content/browser/content_autofill_driver_factory.h"
+#include "components/autofill/core/common/autofill_constants.h"
+#include "components/autofill/core/common/autofill_features.h"
+#include "components/autofill/core/common/signatures.h"
+#include "components/autofill/core/common/unique_ids.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/web_contents.h"
+#include "third_party/abseil-cpp/absl/types/variant.h"
+#include "third_party/blink/public/common/permissions_policy/permissions_policy_features.h"
+
+namespace autofill {
+
+ContentAutofillRouter::ContentAutofillRouter() = default;
+ContentAutofillRouter::~ContentAutofillRouter() = default;
+
+void ContentAutofillRouter::UnregisterDriver(ContentAutofillDriver* driver) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes))
+    return;
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RegisterKeyPressHandler(
+    ContentAutofillDriver* source,
+    const content::RenderWidgetHost::KeyPressEventCallback& handler) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RegisterKeyPressHandlerImpl(handler);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RemoveKeyPressHandler(
+    ContentAutofillDriver* source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RemoveKeyPressHandlerImpl();
+    return;
+  }
+  NOTREACHED();
+}
+
+// Routing of events called by the renderer:
+
+void ContentAutofillRouter::FormsSeen(ContentAutofillDriver* source,
+                                      const std::vector<FormData>& forms) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->FormsSeenImpl(forms);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::SetFormToBeProbablySubmitted(
+    ContentAutofillDriver* source,
+    const absl::optional<FormData>& form) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->SetFormToBeProbablySubmittedImpl(form);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::FormSubmitted(
+    ContentAutofillDriver* source,
+    const FormData& form,
+    bool known_success,
+    mojom::SubmissionSource submission_source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->FormSubmittedImpl(form, known_success, submission_source);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::TextFieldDidChange(ContentAutofillDriver* source,
+                                               const FormData& form,
+                                               const FormFieldData& field,
+                                               const gfx::RectF& bounding_box,
+                                               base::TimeTicks timestamp) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->TextFieldDidChangeImpl(form, field, bounding_box, timestamp);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::TextFieldDidScroll(ContentAutofillDriver* source,
+                                               const FormData& form,
+                                               const FormFieldData& field,
+                                               const gfx::RectF& bounding_box) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->TextFieldDidScrollImpl(form, field, bounding_box);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::SelectControlDidChange(
+    ContentAutofillDriver* source,
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->SelectControlDidChangeImpl(form, field, bounding_box);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::QueryFormFieldAutofill(
+    ContentAutofillDriver* source,
+    int32_t id,
+    const FormData& form,
+    const FormFieldData& field,
+    const gfx::RectF& bounding_box,
+    bool autoselect_first_suggestion) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->QueryFormFieldAutofillImpl(id, form, field, bounding_box,
+                                       autoselect_first_suggestion);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::HidePopup(ContentAutofillDriver* source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->HidePopupImpl();
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::FocusNoLongerOnForm(ContentAutofillDriver* source,
+                                                bool had_interacted_form) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->FocusNoLongerOnFormImpl(had_interacted_form);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::FocusOnFormField(ContentAutofillDriver* source,
+                                             const FormData& form,
+                                             const FormFieldData& field,
+                                             const gfx::RectF& bounding_box) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->FocusOnFormFieldImpl(form, field, bounding_box);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::DidFillAutofillFormData(
+    ContentAutofillDriver* source,
+    const FormData& form,
+    base::TimeTicks timestamp) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->DidFillAutofillFormDataImpl(form, timestamp);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::DidPreviewAutofillFormData(
+    ContentAutofillDriver* source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->DidPreviewAutofillFormDataImpl();
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::DidEndTextFieldEditing(
+    ContentAutofillDriver* source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->DidEndTextFieldEditingImpl();
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::SelectFieldOptionsDidChange(
+    ContentAutofillDriver* source,
+    const FormData& form) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->SelectFieldOptionsDidChangeImpl(form);
+    return;
+  }
+  NOTREACHED();
+}
+
+// Routing of events called by the browser.
+
+void ContentAutofillRouter::SendFormDataToRenderer(
+    ContentAutofillDriver* source,
+    int query_id,
+    AutofillDriver::RendererFormDataAction action,
+    const FormData& data,
+    const url::Origin& triggered_origin,
+    const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->SendFormDataToRendererImpl(query_id, action, data);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::SendAutofillTypePredictionsToRenderer(
+    ContentAutofillDriver* source,
+    std::vector<FormDataPredictions> type_predictions) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->SendAutofillTypePredictionsToRendererImpl(type_predictions);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::SendFieldsEligibleForManualFillingToRenderer(
+    ContentAutofillDriver* source,
+    const std::vector<FieldGlobalId>& fields) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    std::vector<FieldRendererId> renderer_ids;
+    renderer_ids.reserve(renderer_ids.size());
+    for (FieldGlobalId field : fields)
+      renderer_ids.push_back(field.renderer_id);
+    source->SendFieldsEligibleForManualFillingToRendererImpl(renderer_ids);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RendererShouldAcceptDataListSuggestion(
+    ContentAutofillDriver* source,
+    const FieldGlobalId& field,
+    const std::u16string& value) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RendererShouldAcceptDataListSuggestionImpl(field, value);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RendererShouldClearFilledSection(
+    ContentAutofillDriver* source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RendererShouldClearFilledSectionImpl();
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RendererShouldClearPreviewedForm(
+    ContentAutofillDriver* source) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RendererShouldClearPreviewedFormImpl();
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RendererShouldFillFieldWithValue(
+    ContentAutofillDriver* source,
+    const FieldGlobalId& field,
+    const std::u16string& value) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RendererShouldFillFieldWithValueImpl(field, value);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RendererShouldPreviewFieldWithValue(
+    ContentAutofillDriver* source,
+    const FieldGlobalId& field,
+    const std::u16string& value) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RendererShouldPreviewFieldWithValueImpl(field, value);
+    return;
+  }
+  NOTREACHED();
+}
+
+void ContentAutofillRouter::RendererShouldSetSuggestionAvailability(
+    ContentAutofillDriver* source,
+    const FieldGlobalId& field,
+    const mojom::AutofillState state) {
+  if (!base::FeatureList::IsEnabled(features::kAutofillAcrossIframes)) {
+    source->RendererShouldSetSuggestionAvailabilityImpl(field, state);
+    return;
+  }
+  NOTREACHED();
+}
+
+}  // namespace autofill
diff --git a/components/autofill/content/browser/content_autofill_router.h b/components/autofill/content/browser/content_autofill_router.h
new file mode 100644
index 0000000..5c6bf608
--- /dev/null
+++ b/components/autofill/content/browser/content_autofill_router.h
@@ -0,0 +1,240 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_ROUTER_H_
+#define COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_ROUTER_H_
+
+#include <string>
+#include <utility>
+
+#include "base/containers/flat_map.h"
+#include "components/autofill/core/browser/autofill_driver.h"
+#include "components/autofill/core/browser/field_types.h"
+#include "components/autofill/core/common/form_data.h"
+#include "components/autofill/core/common/form_data_predictions.h"
+#include "components/autofill/core/common/form_field_data.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_widget_host.h"
+#include "third_party/abseil-cpp/absl/types/optional.h"
+#include "ui/gfx/geometry/rect_f.h"
+
+namespace autofill {
+
+class ContentAutofillDriver;
+
+// ContentAutofillRouter routes events between ContentAutofillDriver objects in
+// order to handle frame-transcending forms. The precise definition follows, but
+// essentially a frame-transcending form is a <form> which contain <iframe>s
+// with form controls that logically belong to the <form>. For example in credit
+// card forms, it is common that the credit card number is entered into an
+// <iframe> that is hosted on a different server than the one that hosts the
+// main page.
+//
+//
+// Each form control element belongs to one (synthetic or real) form. The *host
+// frame* of a form is the frame whose DOM contains the form.
+// A form is a *child form* of its host frame.
+//
+// A form can contain nested <iframe>s. The *host form* of a frame is the
+// (synthetic or real) form that contains the <iframe> that embeds the frame: if
+// the <iframe> is a descendant of a <form>, that form is the host form;
+// otherwise, the synthetic form is the host form.
+// A frame is a *child frame* of its host form.
+//
+// The described host-to-child relationship induces a forest of trees whose
+// nodes are forms and frames. Every tree with forms from different frames (<=>
+// with at least two forms) is called a *frame-transcending form*.
+//
+// *Flattening* refers to the process of collapsing the non-root forms of such a
+// tree into the root form. That is, flattening maps a hierarchy of forms to a
+// single form. This is done by inserting the non-root forms' fields into the
+// root form according to the cross-frame DOM order.
+//
+// The intention is that the browser shall only work with flattened forms. We
+// refer to the forms of the form tree as the *renderer forms*, and to the
+// flattened forms as *browser forms*. The inverse of flattening,
+// *unflattening*, is the process of determining from a browser form the
+// renderer forms that constitute that flattened form.
+//
+// For example, for the following pseudo HTML code,
+//   <html>
+//   <form id="form1">
+//     <input id="field1">
+//     <iframe id="frame1">
+//       <input id="field2">
+//     </iframe>
+//     <iframe id="frame2">
+//       <iframe id="frame3">
+//         <form id="form2">
+//           <input id="field3">
+//         </form>
+//         <form id="form3">
+//           <input id="field4">
+//         </form>
+//       </iframe>
+//     </iframe>
+//     <input id="field5">
+//   </form>
+// the renderer forms will be in pseudo C++ code
+//   FormData{  // form1 in main frame.
+//     .name = "form1",
+//     .fields = { "field1", "field5" },
+//     .child_frames = { "frame1", "frame2" }
+//   }
+//   FormData{  // Synthetic form in frame1.
+//     .fields = { "field2" },
+//     .child_frames = { }
+//   }
+//   FormData{  // Synthetic form in frame2.
+//     .fields = { },
+//     .child_frames = { "frame3" }
+//   }
+//   FormData{  // form2 in frame3.
+//     .fields = { "field3" },
+//     .child_frames = { }
+//   }
+//   FormData{  // form3 in frame3.
+//     .fields = { "field4" },
+//     .child_frames = { }
+//   }
+// which by flattening are turned into one form
+//   FormData{
+//     .name = "form1",
+//     .fields = { "field1", "field2", "field3", "field4", "field5" }
+//   }
+// Unflattening the flattened form produces the above renderer forms.
+//
+//
+// ContentAutofillRouter's job is to
+// 1. flatten renderer forms and/or unflatten flattened forms, and
+// 2. route the communication between the renderer forms on the one hand and the
+//    flattened form on the other hand.
+//
+// The routing is necessary because after flattening,
+// 1. events coming from an AutofillAgent concerning a renderer form need to be
+//    routed to the flattened form's AutofillManager, and
+// 2. events coming from an AutofillManager concerning a flattened form need to
+//    be routed to the AutofillAgents whose forms constitute the flattened form.
+//
+// ContentAutofillRouter carries out this routing at a ContentAutofillDriver
+// level: each event in ContentAutofillDriver calls the identically-named
+// function of ContentAutofillRouter, which then routes the call back to one or
+// multiple ContentAutofillDrivers.
+//
+// For example, an event coming from AutofillAgent 1 might be routed from
+// ContentAutofillDriver 1 to ContentAutofillDriver 2 and then be handled by
+// AutofillManager 2:
+//
+//   +---Tab---+            +---Tab----+            +----Tab----+
+//   | Agent 1 | ---------> | Driver 1 | -----+     | Manager 1 |
+//   |         |            |          |      |     |           |
+//   | Agent 2 |      +---> | Driver 2 | -----|---> | Manager 2 |
+//   +---------+      |     +----------+      |     +-----------+
+//                    |                       |
+//                    |      +--Tab---+       |
+//                    +----- | Router | <-----+
+//                           +--------+
+//
+// See ContentAutofillDriver for details on the naming pattern and an example.
+// See FormForest for details on (un)flattening.
+class ContentAutofillRouter {
+ public:
+  ContentAutofillRouter();
+  ContentAutofillRouter(const ContentAutofillRouter&) = delete;
+  ContentAutofillRouter& operator=(const ContentAutofillRouter&) = delete;
+  ~ContentAutofillRouter();
+
+  // Deletes all forms and fields related to |driver| (and this driver only).
+  // Should be called whenever |driver| is destroyed.
+  void UnregisterDriver(ContentAutofillDriver* driver);
+
+  void Reset() {}
+
+  // Returns the ContentAutofillDriver* for which QueryFormFieldAutofill() was
+  // called last.
+  ContentAutofillDriver* last_queried_source() const { return nullptr; }
+
+  void RegisterKeyPressHandler(
+      ContentAutofillDriver* source_driver,
+      const content::RenderWidgetHost::KeyPressEventCallback& handler);
+  void RemoveKeyPressHandler(ContentAutofillDriver* source_driver);
+
+  // Routing of events called by the renderer:
+  void SetFormToBeProbablySubmitted(ContentAutofillDriver* source_driver,
+                                    const absl::optional<FormData>& form);
+  void FormsSeen(ContentAutofillDriver* source_driver,
+                 const std::vector<FormData>& forms);
+  void FormSubmitted(ContentAutofillDriver* source_driver,
+                     const FormData& form,
+                     bool known_success,
+                     mojom::SubmissionSource submission_source);
+  void TextFieldDidChange(ContentAutofillDriver* source_driver,
+                          const FormData& form,
+                          const FormFieldData& field,
+                          const gfx::RectF& bounding_box,
+                          base::TimeTicks timestamp);
+  void TextFieldDidScroll(ContentAutofillDriver* source_driver,
+                          const FormData& form,
+                          const FormFieldData& field,
+                          const gfx::RectF& bounding_box);
+  void SelectControlDidChange(ContentAutofillDriver* source_driver,
+                              const FormData& form,
+                              const FormFieldData& field,
+                              const gfx::RectF& bounding_box);
+  void QueryFormFieldAutofill(ContentAutofillDriver* source_driver,
+                              int32_t id,
+                              const FormData& form,
+                              const FormFieldData& field,
+                              const gfx::RectF& bounding_box,
+                              bool autoselect_first_suggestion);
+  void HidePopup(ContentAutofillDriver* source_driver);
+  void FocusNoLongerOnForm(ContentAutofillDriver* source_driver,
+                           bool had_interacted_form);
+  void FocusOnFormField(ContentAutofillDriver* source_driver,
+                        const FormData& form,
+                        const FormFieldData& field,
+                        const gfx::RectF& bounding_box);
+  void DidFillAutofillFormData(ContentAutofillDriver* source_driver,
+                               const FormData& form,
+                               base::TimeTicks timestamp);
+  void DidPreviewAutofillFormData(ContentAutofillDriver* source_driver);
+  void DidEndTextFieldEditing(ContentAutofillDriver* source_driver);
+  void SelectFieldOptionsDidChange(ContentAutofillDriver* source_driver,
+                                   const FormData& form);
+
+  // Routing of events called by the browser:
+  void SendFormDataToRenderer(
+      ContentAutofillDriver* source_driver,
+      int query_id,
+      AutofillDriver::RendererFormDataAction action,
+      const FormData& data,
+      const url::Origin& triggered_origin,
+      const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map);
+  void SendAutofillTypePredictionsToRenderer(
+      ContentAutofillDriver* source_driver,
+      const std::vector<FormDataPredictions> type_predictions);
+  void SendFieldsEligibleForManualFillingToRenderer(
+      ContentAutofillDriver* source_driver,
+      const std::vector<FieldGlobalId>& fields);
+  void RendererShouldAcceptDataListSuggestion(
+      ContentAutofillDriver* source_driver,
+      const FieldGlobalId& field,
+      const std::u16string& value);
+  void RendererShouldClearFilledSection(ContentAutofillDriver* source_driver);
+  void RendererShouldClearPreviewedForm(ContentAutofillDriver* source_driver);
+  void RendererShouldFillFieldWithValue(ContentAutofillDriver* source_driver,
+                                        const FieldGlobalId& field,
+                                        const std::u16string& value);
+  void RendererShouldPreviewFieldWithValue(ContentAutofillDriver* source_driver,
+                                           const FieldGlobalId& field,
+                                           const std::u16string& value);
+  void RendererShouldSetSuggestionAvailability(
+      ContentAutofillDriver* source_driver,
+      const FieldGlobalId& field,
+      const mojom::AutofillState state);
+};
+
+}  // namespace autofill
+
+#endif  // COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_ROUTER_H_
diff --git a/components/autofill/core/browser/autocomplete_history_manager_unittest.cc b/components/autofill/core/browser/autocomplete_history_manager_unittest.cc
index 70fa331..436a8bd 100644
--- a/components/autofill/core/browser/autocomplete_history_manager_unittest.cc
+++ b/components/autofill/core/browser/autocomplete_history_manager_unittest.cc
@@ -64,10 +64,12 @@
  public:
   MockSuggestionsHandler() {}
 
-  MOCK_METHOD3(OnSuggestionsReturned,
-               void(int query_id,
-                    bool autoselect_first_suggestion,
-                    const std::vector<Suggestion>& suggestions));
+  MOCK_METHOD(void,
+              OnSuggestionsReturned,
+              (int query_id,
+               bool autoselect_first_suggestion,
+               const std::vector<Suggestion>& suggestions),
+              (override));
 
   base::WeakPtr<MockSuggestionsHandler> GetWeakPtr() {
     return weak_ptr_factory_.GetWeakPtr();
diff --git a/components/autofill/core/browser/autofill_driver.h b/components/autofill/core/browser/autofill_driver.h
index 9eef8679..99df1c1 100644
--- a/components/autofill/core/browser/autofill_driver.h
+++ b/components/autofill/core/browser/autofill_driver.h
@@ -7,11 +7,14 @@
 
 #include <vector>
 
+#include "base/containers/flat_map.h"
 #include "base/memory/scoped_refptr.h"
 #include "build/build_config.h"
+#include "components/autofill/core/browser/field_types.h"
 #include "components/autofill/core/common/form_data.h"
 #include "mojo/public/cpp/bindings/pending_receiver.h"
 #include "net/base/isolation_info.h"
+#include "url/origin.h"
 
 #if !defined(OS_IOS)
 #include "components/autofill/core/browser/payments/internal_authenticator.h"
@@ -74,13 +77,19 @@
   GetOrCreateCreditCardInternalAuthenticator() = 0;
 #endif
 
-  // Forwards |data| to the renderer. |query_id| is the id of the renderer's
-  // original request for the data. |action| is the action the renderer should
-  // perform with the |data|. This method is a no-op if the renderer is not
-  // currently available.
-  virtual void SendFormDataToRenderer(int query_id,
-                                      RendererFormDataAction action,
-                                      const FormData& data) = 0;
+  // Forwards |data| to the renderer.
+  // |query_id| is the id of the renderer's original request for the data.
+  // |action| is the action the renderer should perform with the |data|.
+  // |triggered_origin| is the origin of the field on which Autofill was
+  // triggered, and |field_type_map| are the type predictions; these two
+  // parameters can be taken into account to decide which fields to fill across
+  // frames. This method is a no-op if the renderer is not currently available.
+  virtual void SendFormDataToRenderer(
+      int query_id,
+      RendererFormDataAction action,
+      const FormData& data,
+      const url::Origin& triggered_origin,
+      const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map) = 0;
 
   // Pass the form structures to the password manager to choose correct username
   // and to the password generation manager to detect account creation forms.
@@ -137,7 +146,7 @@
   // Tells the renderer about the form fields that are eligible for triggering
   // manual filling on form interaction.
   virtual void SendFieldsEligibleForManualFillingToRenderer(
-      const std::vector<FieldRendererId>& fields) = 0;
+      const std::vector<FieldGlobalId>& fields) = 0;
 };
 
 }  // namespace autofill
diff --git a/components/autofill/core/browser/autofill_driver_factory_unittest.cc b/components/autofill/core/browser/autofill_driver_factory_unittest.cc
index 23b169a6..b3a5aa8 100644
--- a/components/autofill/core/browser/autofill_driver_factory_unittest.cc
+++ b/components/autofill/core/browser/autofill_driver_factory_unittest.cc
@@ -21,7 +21,7 @@
 
 class MockAutofillClient : public TestAutofillClient {
  public:
-  MOCK_METHOD1(HideAutofillPopup, void(PopupHidingReason));
+  MOCK_METHOD(void, HideAutofillPopup, (PopupHidingReason), (override));
 };
 
 // Just a stub AutofillDriver implementation which announces its construction
diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
index ec4b069..96ae4dc1 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -46,8 +46,7 @@
   return nullptr;
 }
 
-// Returns true if |live_form| does not match |cached_form|, assuming that
-// |live_form|'s language is |live_form_language|.
+// Returns true if |live_form| does not match |cached_form|.
 bool CachedFormNeedsUpdate(const FormData& live_form,
                            const FormStructure& cached_form) {
   if (live_form.fields.size() != cached_form.field_count())
@@ -348,13 +347,6 @@
   OnFocusOnFormFieldImpl(form, field, transformed_box);
 }
 
-void AutofillManager::SendFormDataToRenderer(
-    int query_id,
-    AutofillDriver::RendererFormDataAction action,
-    const FormData& data) {
-  driver_->SendFormDataToRenderer(query_id, action, data);
-}
-
 // Returns true if |live_form| does not match |cached_form|.
 bool AutofillManager::GetCachedFormAndField(const FormData& form,
                                             const FormFieldData& field,
diff --git a/components/autofill/core/browser/autofill_manager.h b/components/autofill/core/browser/autofill_manager.h
index 963b907..eb903ecc 100644
--- a/components/autofill/core/browser/autofill_manager.h
+++ b/components/autofill/core/browser/autofill_manager.h
@@ -161,11 +161,6 @@
   void OnLanguageDetermined(
       const translate::LanguageDetectionDetails& details) override;
 
-  // Send the form |data| to renderer for the specified |action|.
-  void SendFormDataToRenderer(int query_id,
-                              AutofillDriver::RendererFormDataAction action,
-                              const FormData& data);
-
   // Fills |form_structure| and |autofill_field| with the cached elements
   // corresponding to |form| and |field|.  This might have the side-effect of
   // updating the cache.  Returns false if the |form| is not autofillable, or if
diff --git a/components/autofill/core/browser/autofill_metrics_unittest.cc b/components/autofill/core/browser/autofill_metrics_unittest.cc
index 014e024..c40639e 100644
--- a/components/autofill/core/browser/autofill_metrics_unittest.cc
+++ b/components/autofill/core/browser/autofill_metrics_unittest.cc
@@ -322,7 +322,7 @@
 class MockAutofillClient : public TestAutofillClient {
  public:
   MockAutofillClient() {}
-  MOCK_METHOD1(ExecuteCommand, void(int));
+  MOCK_METHOD(void, ExecuteCommand, (int), (override));
 };
 
 }  // namespace
diff --git a/components/autofill/core/browser/browser_autofill_manager.cc b/components/autofill/core/browser/browser_autofill_manager.cc
index 00dc6bc..05b8c26b 100644
--- a/components/autofill/core/browser/browser_autofill_manager.cc
+++ b/components/autofill/core/browser/browser_autofill_manager.cc
@@ -94,6 +94,7 @@
 #include "components/security_state/core/security_state.h"
 #include "components/strings/grit/components_strings.h"
 #include "services/network/public/cpp/shared_url_loader_factory.h"
+#include "third_party/abseil-cpp/absl/types/optional.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/image/image.h"
@@ -395,6 +396,7 @@
     : filled_field_id(field.global_id()),
       filled_field_signature(field.GetFieldSignature()),
       filled_field_unique_name(field.unique_name()),
+      filled_origin(field.origin),
       original_fill_time(AutofillTickClock::NowTicks()) {
   DCHECK(absl::holds_alternative<const CreditCard*>(profile_or_credit_card) ||
          !optional_cvc);
@@ -1710,7 +1712,10 @@
   // Count the number of times the value of a specific type was filled into the
   // form.
   base::flat_map<ServerFieldType, size_t> type_filling_count;
+  // See SendFormDataToRenderer().
+  base::flat_map<FieldGlobalId, ServerFieldType> field_type_map;
   type_filling_count.reserve(form_structure->field_count());
+  field_type_map.reserve(form_structure->field_count());
 
   for (size_t i = 0; i < form_structure->field_count(); ++i) {
     std::string field_number = base::StringPrintf("Field %zu", i);
@@ -1834,6 +1839,7 @@
                        should_notify, optional_cvc ? *optional_cvc : kEmptyCvc,
                        data_util::DetermineGroups(*form_structure),
                        &failure_to_fill);
+    field_type_map[result.fields[i].global_id()] = field_type;
 
     bool has_value_after = !result.fields[i].value.empty();
     bool is_autofilled_after = result.fields[i].is_autofilled;
@@ -1864,7 +1870,8 @@
                          << LogMessage::kSendFillingData << Br{}
                          << std::move(buffer);
   }
-  driver()->SendFormDataToRenderer(query_id, action, result);
+  driver()->SendFormDataToRenderer(query_id, action, result, field.origin,
+                                   field_type_map);
 }
 
 std::unique_ptr<FormStructure> BrowserAutofillManager::ValidateSubmittedForm(
@@ -2486,7 +2493,8 @@
           field->global_id() == filling_context->filled_field_id) ||
          (!base::FeatureList::IsEnabled(
               features::kAutofillRefillWithRendererIds) &&
-          field->unique_name() == filling_context->filled_field_unique_name))) {
+          field->unique_name() == filling_context->filled_field_unique_name)) &&
+        field->origin == filling_context->filled_origin) {
       autofill_field = field.get();
       break;
     }
@@ -2504,7 +2512,8 @@
 
     for (const std::unique_ptr<AutofillField>& field : *form_structure) {
       if (field->GetFieldSignature() ==
-          filling_context->filled_field_signature) {
+              filling_context->filled_field_signature &&
+          field->origin == filling_context->filled_origin) {
         if (autofill_field == nullptr || is_better(*field, *autofill_field)) {
           autofill_field = field.get();
         }
diff --git a/components/autofill/core/browser/browser_autofill_manager_unittest.cc b/components/autofill/core/browser/browser_autofill_manager_unittest.cc
index 6f13eef..418d29d 100644
--- a/components/autofill/core/browser/browser_autofill_manager_unittest.cc
+++ b/components/autofill/core/browser/browser_autofill_manager_unittest.cc
@@ -121,12 +121,19 @@
   MockAutofillClient& operator=(const MockAutofillClient&) = delete;
   ~MockAutofillClient() override = default;
 
-  MOCK_METHOD0(ShouldShowSigninPromo, bool());
-  MOCK_CONST_METHOD0(GetChannel, version_info::Channel());
-  MOCK_METHOD2(ConfirmSaveUpiIdLocally,
-               void(const std::string& upi_id,
-                    base::OnceCallback<void(bool user_decision)> callback));
-  MOCK_CONST_METHOD0(GetProfileType, profile_metrics::BrowserProfileType());
+  MOCK_METHOD(bool, ShouldShowSigninPromo, (), (override));
+  MOCK_METHOD(version_info::Channel, GetChannel, (), (const override));
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  MOCK_METHOD(void,
+              ConfirmSaveUpiIdLocally,
+              (const std::string& upi_id,
+               base::OnceCallback<void(bool user_decision)> callback),
+              (override));
+#endif
+  MOCK_METHOD(profile_metrics::BrowserProfileType,
+              GetProfileType,
+              (),
+              (const override));
 };
 
 class MockAutofillDownloadManager : public TestAutofillDownloadManager {
@@ -138,13 +145,15 @@
   MockAutofillDownloadManager& operator=(const MockAutofillDownloadManager&) =
       delete;
 
-  MOCK_METHOD6(StartUploadRequest,
-               bool(const FormStructure&,
-                    bool,
-                    const ServerFieldTypeSet&,
-                    const std::string&,
-                    bool,
-                    PrefService*));
+  MOCK_METHOD(bool,
+              StartUploadRequest,
+              (const FormStructure&,
+               bool,
+               const ServerFieldTypeSet&,
+               const std::string&,
+               bool,
+               PrefService*),
+              (override));
 };
 
 void ExpectFilledField(const char* expected_label,
@@ -309,15 +318,22 @@
   MockAutofillDriver& operator=(const MockAutofillDriver&) = delete;
 
   // Mock methods to enable testability.
-  MOCK_METHOD3(SendFormDataToRenderer,
-               void(int query_id,
-                    RendererFormDataAction action,
-                    const FormData& data));
-
-  MOCK_METHOD1(SendAutofillTypePredictionsToRenderer,
-               void(const std::vector<FormStructure*>& forms));
-  MOCK_METHOD1(SendFieldsEligibleForManualFillingToRenderer,
-               void(const std::vector<FieldRendererId>& fields));
+  MOCK_METHOD(void,
+              SendFormDataToRenderer,
+              (int query_id,
+               RendererFormDataAction action,
+               const FormData& data,
+               const url::Origin& triggered_origin,
+               (const base::flat_map<FieldGlobalId, ServerFieldType>&)),
+              (override));
+  MOCK_METHOD(void,
+              SendAutofillTypePredictionsToRenderer,
+              (const std::vector<FormStructure*>& forms),
+              (override));
+  MOCK_METHOD(void,
+              SendFieldsEligibleForManualFillingToRenderer,
+              (const std::vector<FieldGlobalId>& fields),
+              (override));
 };
 
 }  // namespace
@@ -343,6 +359,7 @@
         std::make_unique<MockAutocompleteHistoryManager>();
     autocomplete_history_manager_->Init(
         /*profile_database=*/database_,
+        /*pref_service=*/autofill_client_.GetPrefs(),
         /*is_off_the_record=*/false);
 
     autofill_driver_ =
@@ -500,7 +517,7 @@
                                           int unique_id,
                                           int* response_query_id,
                                           FormData* response_data) {
-    EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _))
+    EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _, _, _))
         .WillOnce((DoAll(testing::SaveArg<0>(response_query_id),
                          testing::SaveArg<2>(response_data))));
     FillAutofillFormData(input_query_id, input_form, input_field, unique_id);
@@ -572,7 +589,7 @@
                             "2017", "1");
     card->SetNetworkForMaskedCard(kVisaCard);
 
-    EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _))
+    EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _, _, _))
         .Times(AtLeast(1));
     browser_autofill_manager_->FillOrPreviewCreditCardForm(
         AutofillDriver::FORM_DATA_ACTION_FILL, kDefaultPageID, *form,
@@ -2627,7 +2644,7 @@
 
   int response_query_id = 0;
   FormData response_data;
-  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _))
+  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _, _, _))
       .WillOnce((DoAll(testing::SaveArg<0>(&response_query_id),
                        testing::SaveArg<2>(&response_data))));
   browser_autofill_manager_->FillOrPreviewDataModelForm(
@@ -2662,7 +2679,8 @@
   AutofillProfile* profile = personal_data_.GetProfileWithGUID(guid);
   ASSERT_TRUE(profile);
 
-  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _)).Times(0);
+  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _, _, _))
+      .Times(0);
 }
 
 // Tests that BrowserAutofillManager ignores loss of focus events sent from the
@@ -7659,7 +7677,8 @@
   const char guid[] = "00000000-0000-0000-0000-000000000001";
 
   // Expect no fields filled, no form data sent to renderer.
-  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _)).Times(0);
+  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _, _, _))
+      .Times(0);
 
   FillAutofillFormData(kDefaultPageID, form, *form.fields.begin(),
                        MakeFrontendID(std::string(), guid));
@@ -7696,7 +7715,8 @@
   const char guid[] = "00000000-0000-0000-0000-000000000004";
 
   // Expect no fields filled, no form data sent to renderer.
-  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _)).Times(0);
+  EXPECT_CALL(*autofill_driver_, SendFormDataToRenderer(_, _, _, _, _))
+      .Times(0);
 
   FillAutofillFormData(kDefaultPageID, form, *form.fields.begin(),
                        MakeFrontendID(guid, std::string()));
@@ -9226,7 +9246,9 @@
   scoped_feature_list.InitAndEnableFeature(features::kAutofillSaveAndFillVPA);
   autofill_driver_->SetIsIncognito(true);
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
   EXPECT_CALL(autofill_client_, ConfirmSaveUpiIdLocally(_, _)).Times(0);
+#endif  // #if !defined(OS_ANDROID) && !defined(OS_IOS)
 
   FormData form;
   form.url = GURL("https://wwww.foo.com");
diff --git a/components/autofill/core/browser/form_data_importer_unittest.cc b/components/autofill/core/browser/form_data_importer_unittest.cc
index 09c961a..ab4bc7f 100644
--- a/components/autofill/core/browser/form_data_importer_unittest.cc
+++ b/components/autofill/core/browser/form_data_importer_unittest.cc
@@ -76,8 +76,8 @@
   PersonalDataLoadedObserverMock() {}
   ~PersonalDataLoadedObserverMock() override {}
 
-  MOCK_METHOD0(OnPersonalDataChanged, void());
-  MOCK_METHOD0(OnPersonalDataFinishedProfileTasks, void());
+  MOCK_METHOD(void, OnPersonalDataChanged, (), (override));
+  MOCK_METHOD(void, OnPersonalDataFinishedProfileTasks, (), (override));
 };
 
 template <typename T>
diff --git a/components/autofill/core/browser/form_structure.cc b/components/autofill/core/browser/form_structure.cc
index 289bd7d7..e775af8 100644
--- a/components/autofill/core/browser/form_structure.cc
+++ b/components/autofill/core/browser/form_structure.cc
@@ -953,9 +953,9 @@
 }
 
 // static
-std::vector<FieldRendererId> FormStructure::FindFieldsEligibleForManualFilling(
+std::vector<FieldGlobalId> FormStructure::FindFieldsEligibleForManualFilling(
     const std::vector<FormStructure*>& forms) {
-  std::vector<FieldRendererId> fields_eligible_for_manual_filling;
+  std::vector<FieldGlobalId> fields_eligible_for_manual_filling;
   for (const auto* form : forms) {
     for (const auto& field : form->fields_) {
       FieldTypeGroup field_type_group =
@@ -968,7 +968,7 @@
       // this list may expand in the future.
       if (field_type_group == FieldTypeGroup::kCreditCard ||
           field_type_group == FieldTypeGroup::kNoGroup) {
-        fields_eligible_for_manual_filling.push_back(field->unique_renderer_id);
+        fields_eligible_for_manual_filling.push_back(field->global_id());
       }
     }
   }
diff --git a/components/autofill/core/browser/form_structure.h b/components/autofill/core/browser/form_structure.h
index f1f8f77e..80d5933 100644
--- a/components/autofill/core/browser/form_structure.h
+++ b/components/autofill/core/browser/form_structure.h
@@ -211,9 +211,9 @@
   // * NAME_LAST_SECOND heuristic predictions are unconditionally used.
   void OverrideServerPredictionsWithHeuristics();
 
-  // Returns the FieldRendererId for fields that are eligible for Manual Filling
-  // on form interaction.
-  static std::vector<FieldRendererId> FindFieldsEligibleForManualFilling(
+  // Returns the FieldGlobalIds of the |fields_| that are eligible for manual
+  // filling on form interaction.
+  static std::vector<FieldGlobalId> FindFieldsEligibleForManualFilling(
       const std::vector<FormStructure*>& forms);
 
   const AutofillField* field(size_t index) const;
diff --git a/components/autofill/core/browser/form_structure_unittest.cc b/components/autofill/core/browser/form_structure_unittest.cc
index b87c65f2..7b0fa94 100644
--- a/components/autofill/core/browser/form_structure_unittest.cc
+++ b/components/autofill/core/browser/form_structure_unittest.cc
@@ -8352,23 +8352,22 @@
   field.form_control_type = "text";
   field.max_length = 10000;
 
-  FieldRendererId full_name_renderer_id = MakeFieldRendererId();
   field.label = u"Full Name";
   field.name = u"fullName";
-  field.unique_renderer_id = full_name_renderer_id;
+  field.unique_renderer_id = test::MakeFieldRendererId();
   form.fields.push_back(field);
+  FieldGlobalId full_name_id = field.global_id();
 
-  FieldRendererId country_renderer_id = MakeFieldRendererId();
   field.label = u"Country";
   field.name = u"country";
-  field.unique_renderer_id = country_renderer_id;
+  field.unique_renderer_id = test::MakeFieldRendererId();
   form.fields.push_back(field);
 
-  FieldRendererId unknown_renderer_id = MakeFieldRendererId();
   field.label = u"Unknown";
   field.name = u"unknown";
-  field.unique_renderer_id = unknown_renderer_id;
+  field.unique_renderer_id = test::MakeFieldRendererId();
   form.fields.push_back(field);
+  FieldGlobalId unknown_id = field.global_id();
 
   FormStructure form_structure(form);
 
@@ -8380,10 +8379,10 @@
   forms.push_back(&form_structure);
 
   form_structure.identify_sections_for_testing();
-  std::vector<FieldRendererId> expected_result;
+  std::vector<FieldGlobalId> expected_result;
   // Only credit card related and unknown fields are elible for manual filling.
-  expected_result.push_back(full_name_renderer_id);
-  expected_result.push_back(unknown_renderer_id);
+  expected_result.push_back(full_name_id);
+  expected_result.push_back(unknown_id);
 
   EXPECT_EQ(expected_result,
             FormStructure::FindFieldsEligibleForManualFilling(forms));
diff --git a/components/autofill/core/browser/logging/log_buffer_submitter_unittest.cc b/components/autofill/core/browser/logging/log_buffer_submitter_unittest.cc
index 506fadb..56bb239 100644
--- a/components/autofill/core/browser/logging/log_buffer_submitter_unittest.cc
+++ b/components/autofill/core/browser/logging/log_buffer_submitter_unittest.cc
@@ -18,7 +18,7 @@
 
 class MockLogReceiver : public LogReceiver {
  public:
-  MOCK_METHOD1(LogEntry, void(const base::Value&));
+  MOCK_METHOD(void, LogEntry, (const base::Value&), (override));
 };
 
 TEST(LogBufferSubmitter, VerifySubmissionOnDestruction) {
diff --git a/components/autofill/core/browser/logging/log_manager_unittest.cc b/components/autofill/core/browser/logging/log_manager_unittest.cc
index 19806be..fe0f101 100644
--- a/components/autofill/core/browser/logging/log_manager_unittest.cc
+++ b/components/autofill/core/browser/logging/log_manager_unittest.cc
@@ -23,7 +23,7 @@
 class MockLogReceiver : public autofill::LogReceiver {
  public:
   MockLogReceiver() = default;
-  MOCK_METHOD1(LogEntry, void(const base::Value&));
+  MOCK_METHOD(void, LogEntry, (const base::Value&), (override));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockLogReceiver);
@@ -32,7 +32,7 @@
 class MockNotifiedObject {
  public:
   MockNotifiedObject() = default;
-  MOCK_METHOD0(NotifyAboutLoggingActivity, void());
+  MOCK_METHOD(void, NotifyAboutLoggingActivity, (), ());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockNotifiedObject);
diff --git a/components/autofill/core/browser/logging/log_router_unittest.cc b/components/autofill/core/browser/logging/log_router_unittest.cc
index 26f6ea85..1cce8aa 100644
--- a/components/autofill/core/browser/logging/log_router_unittest.cc
+++ b/components/autofill/core/browser/logging/log_router_unittest.cc
@@ -23,7 +23,7 @@
  public:
   MockLogReceiver() = default;
 
-  MOCK_METHOD1(LogEntry, void(const base::Value&));
+  MOCK_METHOD(void, LogEntry, (const base::Value&), (override));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockLogReceiver);
@@ -33,7 +33,7 @@
  public:
   MockLogManager() = default;
 
-  MOCK_METHOD1(OnLogRouterAvailabilityChanged, void(bool));
+  MOCK_METHOD(void, OnLogRouterAvailabilityChanged, (bool), (override));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockLogManager);
diff --git a/components/autofill/core/browser/mock_autocomplete_history_manager.h b/components/autofill/core/browser/mock_autocomplete_history_manager.h
index 02b0395..2abdf5d 100644
--- a/components/autofill/core/browser/mock_autocomplete_history_manager.h
+++ b/components/autofill/core/browser/mock_autocomplete_history_manager.h
@@ -16,27 +16,37 @@
   MockAutocompleteHistoryManager();
   ~MockAutocompleteHistoryManager();
 
-  MOCK_METHOD2(Init, void(scoped_refptr<AutofillWebDataService>, bool));
-  MOCK_METHOD7(
+  MOCK_METHOD(
+      void,
       OnGetAutocompleteSuggestions,
-      void(int query_id,
-           bool is_autocomplete_enabled,
-           bool autoselect_first_suggestion,
-           const std::u16string& name,
-           const std::u16string& prefix,
-           const std::string& form_control_type,
-           base::WeakPtr<AutocompleteHistoryManager::SuggestionsHandler>
-               handler));
-  MOCK_METHOD2(OnWillSubmitForm,
-               void(const FormData& form, bool is_autocomplete_enabled));
-  MOCK_METHOD2(OnWebDataServiceRequestDone,
-               void(WebDataServiceBase::Handle,
-                    std::unique_ptr<WDTypedResult>));
-  MOCK_METHOD1(CancelPendingQueries,
-               void(const AutocompleteHistoryManager::SuggestionsHandler*));
-  MOCK_METHOD2(OnRemoveAutocompleteEntry,
-               void(const std::u16string&, const std::u16string&));
-  MOCK_METHOD1(OnAutocompleteEntrySelected, void(const std::u16string&));
+      (int query_id,
+       bool is_autocomplete_enabled,
+       bool autoselect_first_suggestion,
+       const std::u16string& name,
+       const std::u16string& prefix,
+       const std::string& form_control_type,
+       base::WeakPtr<AutocompleteHistoryManager::SuggestionsHandler> handler),
+      (override));
+  MOCK_METHOD(void,
+              OnWillSubmitForm,
+              (const FormData& form, bool is_autocomplete_enabled),
+              (override));
+  MOCK_METHOD(void,
+              OnWebDataServiceRequestDone,
+              (WebDataServiceBase::Handle, std::unique_ptr<WDTypedResult>),
+              (override));
+  MOCK_METHOD(void,
+              CancelPendingQueries,
+              (const AutocompleteHistoryManager::SuggestionsHandler*),
+              (override));
+  MOCK_METHOD(void,
+              OnRemoveAutocompleteEntry,
+              (const std::u16string&, const std::u16string&),
+              (override));
+  MOCK_METHOD(void,
+              OnAutocompleteEntrySelected,
+              (const std::u16string&),
+              (override));
 };
 
 }  // namespace autofill
diff --git a/components/autofill/core/browser/payments/credit_card_save_manager_unittest.cc b/components/autofill/core/browser/payments/credit_card_save_manager_unittest.cc
index 691ed980..87d512b 100644
--- a/components/autofill/core/browser/payments/credit_card_save_manager_unittest.cc
+++ b/components/autofill/core/browser/payments/credit_card_save_manager_unittest.cc
@@ -115,7 +115,7 @@
  public:
   MockPersonalDataManager() = default;
   ~MockPersonalDataManager() override = default;
-  MOCK_METHOD0(OnUserAcceptedUpstreamOffer, void());
+  MOCK_METHOD(void, OnUserAcceptedUpstreamOffer, (), (override));
 };
 
 class CreditCardSaveManagerTest : public testing::Test {
@@ -138,6 +138,7 @@
     personal_data_.SetSyncServiceForTest(&sync_service_);
     autocomplete_history_manager_.Init(
         /*profile_database=*/database_,
+        /*pref_service=*/nullptr,
         /*is_off_the_record=*/false);
     autofill_driver_ = std::make_unique<TestAutofillDriver>();
     payments_client_ = new payments::TestPaymentsClient(
diff --git a/components/autofill/core/browser/payments/full_card_request_unittest.cc b/components/autofill/core/browser/payments/full_card_request_unittest.cc
index d96d3bf..9bcee620 100644
--- a/components/autofill/core/browser/payments/full_card_request_unittest.cc
+++ b/components/autofill/core/browser/payments/full_card_request_unittest.cc
@@ -39,27 +39,38 @@
 class MockResultDelegate : public FullCardRequest::ResultDelegate,
                            public base::SupportsWeakPtr<MockResultDelegate> {
  public:
-  MOCK_METHOD3(OnFullCardRequestSucceeded,
-               void(const payments::FullCardRequest&,
-                    const CreditCard&,
-                    const std::u16string&));
-  MOCK_METHOD1(OnFullCardRequestFailed,
-               void(payments::FullCardRequest::FailureType));
+  MOCK_METHOD(void,
+              OnFullCardRequestSucceeded,
+              (const payments::FullCardRequest&,
+               const CreditCard&,
+               const std::u16string&),
+              (override));
+  MOCK_METHOD(void,
+              OnFullCardRequestFailed,
+              (payments::FullCardRequest::FailureType),
+              (override));
 };
 
 // The delegate responsible for displaying the unmask prompt UI.
 class MockUIDelegate : public FullCardRequest::UIDelegate,
                        public base::SupportsWeakPtr<MockUIDelegate> {
  public:
-  MOCK_METHOD3(ShowUnmaskPrompt,
-               void(const CreditCard&,
-                    AutofillClient::UnmaskCardReason,
-                    base::WeakPtr<CardUnmaskDelegate>));
-  MOCK_METHOD1(OnUnmaskVerificationResult,
-               void(AutofillClient::PaymentsRpcResult));
+  MOCK_METHOD(void,
+              ShowUnmaskPrompt,
+              (const CreditCard&,
+               AutofillClient::UnmaskCardReason,
+               base::WeakPtr<CardUnmaskDelegate>),
+              (override));
+  MOCK_METHOD(void,
+              OnUnmaskVerificationResult,
+              (AutofillClient::PaymentsRpcResult),
+              (override));
 #if defined(OS_ANDROID)
-  MOCK_CONST_METHOD0(ShouldOfferFidoAuth, bool());
-  MOCK_CONST_METHOD0(UserOptedInToFidoFromSettingsPageOnMobile, bool());
+  MOCK_METHOD(bool, ShouldOfferFidoAuth, (), (const override));
+  MOCK_METHOD(bool,
+              UserOptedInToFidoFromSettingsPageOnMobile,
+              (),
+              (const override));
 #endif
 };
 
@@ -68,9 +79,15 @@
  public:
   MockPersonalDataManager() {}
   ~MockPersonalDataManager() override {}
-  MOCK_CONST_METHOD0(IsSyncFeatureEnabled, bool());
-  MOCK_METHOD1(UpdateCreditCard, void(const CreditCard& credit_card));
-  MOCK_METHOD1(UpdateServerCreditCard, void(const CreditCard& credit_card));
+  MOCK_METHOD(bool, IsSyncFeatureEnabled, (), (const override));
+  MOCK_METHOD(void,
+              UpdateCreditCard,
+              (const CreditCard& credit_card),
+              (override));
+  MOCK_METHOD(void,
+              UpdateServerCreditCard,
+              (const CreditCard& credit_card),
+              (override));
 };
 
 // TODO(crbug.com/881835): Simplify this test setup.
diff --git a/components/autofill/core/browser/personal_data_manager_unittest.cc b/components/autofill/core/browser/personal_data_manager_unittest.cc
index 620aa40b..7fcf7c0e 100644
--- a/components/autofill/core/browser/personal_data_manager_unittest.cc
+++ b/components/autofill/core/browser/personal_data_manager_unittest.cc
@@ -93,14 +93,13 @@
   loop->Quit();
 }
 
-
 class PersonalDataLoadedObserverMock : public PersonalDataManagerObserver {
  public:
   PersonalDataLoadedObserverMock() = default;
   ~PersonalDataLoadedObserverMock() override = default;
 
-  MOCK_METHOD0(OnPersonalDataChanged, void());
-  MOCK_METHOD0(OnPersonalDataFinishedProfileTasks, void());
+  MOCK_METHOD(void, OnPersonalDataChanged, (), (override));
+  MOCK_METHOD(void, OnPersonalDataFinishedProfileTasks, (), (override));
 };
 
 class PersonalDataManagerMock : public PersonalDataManager {
@@ -110,7 +109,7 @@
       : PersonalDataManager(app_locale, variations_country_code) {}
   ~PersonalDataManagerMock() override = default;
 
-  MOCK_METHOD1(OnValidated, void(const AutofillProfile* profile));
+  MOCK_METHOD(void, OnValidated, (const AutofillProfile* profile), (override));
   void OnValidatedPDM(const AutofillProfile* profile) {
     PersonalDataManager::OnValidated(profile);
   }
diff --git a/components/autofill/core/browser/test_autofill_driver.cc b/components/autofill/core/browser/test_autofill_driver.cc
index 683bc93..6ef7b75 100644
--- a/components/autofill/core/browser/test_autofill_driver.cc
+++ b/components/autofill/core/browser/test_autofill_driver.cc
@@ -54,10 +54,12 @@
 }
 #endif
 
-void TestAutofillDriver::SendFormDataToRenderer(int query_id,
-                                                RendererFormDataAction action,
-                                                const FormData& form_data) {
-}
+void TestAutofillDriver::SendFormDataToRenderer(
+    int query_id,
+    RendererFormDataAction action,
+    const FormData& form_data,
+    const url::Origin& triggered_origin,
+    const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map) {}
 
 void TestAutofillDriver::PropagateAutofillPredictions(
     const std::vector<FormStructure*>& forms) {
@@ -104,7 +106,7 @@
 }
 
 void TestAutofillDriver::SendFieldsEligibleForManualFillingToRenderer(
-    const std::vector<FieldRendererId>& fields) {}
+    const std::vector<FieldGlobalId>& fields) {}
 
 void TestAutofillDriver::SetIsIncognito(bool is_incognito) {
   is_incognito_ = is_incognito;
diff --git a/components/autofill/core/browser/test_autofill_driver.h b/components/autofill/core/browser/test_autofill_driver.h
index a3a298dc..cba7834 100644
--- a/components/autofill/core/browser/test_autofill_driver.h
+++ b/components/autofill/core/browser/test_autofill_driver.h
@@ -6,12 +6,14 @@
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_TEST_AUTOFILL_DRIVER_H_
 
 #include "base/compiler_specific.h"
+#include "base/containers/flat_map.h"
 #include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "build/build_config.h"
 #include "components/autofill/core/browser/autofill_driver.h"
 #include "mojo/public/cpp/bindings/pending_receiver.h"
 #include "services/network/test/test_url_loader_factory.h"
+#include "url/origin.h"
 
 #if !defined(OS_IOS)
 #include "components/autofill/content/browser/content_autofill_driver.h"
@@ -28,6 +30,8 @@
 #endif
  public:
   TestAutofillDriver();
+  TestAutofillDriver(const TestAutofillDriver&) = delete;
+  TestAutofillDriver& operator=(const TestAutofillDriver&) = delete;
   ~TestAutofillDriver() override;
 
   // AutofillDriver implementation overrides.
@@ -40,9 +44,13 @@
 #if !defined(OS_IOS)
   InternalAuthenticator* GetOrCreateCreditCardInternalAuthenticator() override;
 #endif
-  void SendFormDataToRenderer(int query_id,
-                              RendererFormDataAction action,
-                              const FormData& data) override;
+  void SendFormDataToRenderer(
+      int query_id,
+      RendererFormDataAction action,
+      const FormData& data,
+      const url::Origin& triggered_origin,
+      const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map)
+      override;
   void PropagateAutofillPredictions(
       const std::vector<autofill::FormStructure*>& forms) override;
   void HandleParsedForms(const std::vector<const FormData*>& forms) override;
@@ -66,7 +74,7 @@
       const gfx::RectF& bounding_box) override;
   net::IsolationInfo IsolationInfo() override;
   void SendFieldsEligibleForManualFillingToRenderer(
-      const std::vector<FieldRendererId>& fields) override;
+      const std::vector<FieldGlobalId>& fields) override;
 
   // Methods unique to TestAutofillDriver that tests can use to specialize
   // functionality.
@@ -91,8 +99,6 @@
 #if !defined(OS_IOS)
   std::unique_ptr<InternalAuthenticator> test_authenticator_;
 #endif
-
-  DISALLOW_COPY_AND_ASSIGN(TestAutofillDriver);
 };
 
 }  // namespace autofill
diff --git a/components/autofill/core/browser/webdata/mock_autofill_webdata_backend.h b/components/autofill/core/browser/webdata/mock_autofill_webdata_backend.h
index 1b49e3de..fca6735 100644
--- a/components/autofill/core/browser/webdata/mock_autofill_webdata_backend.h
+++ b/components/autofill/core/browser/webdata/mock_autofill_webdata_backend.h
@@ -21,18 +21,30 @@
   MockAutofillWebDataBackend();
   ~MockAutofillWebDataBackend() override;
 
-  MOCK_METHOD0(GetDatabase, WebDatabase*());
-  MOCK_METHOD1(AddObserver,
-               void(AutofillWebDataServiceObserverOnDBSequence* observer));
-  MOCK_METHOD1(RemoveObserver,
-               void(AutofillWebDataServiceObserverOnDBSequence* observer));
-  MOCK_METHOD0(CommitChanges, void());
-  MOCK_METHOD1(NotifyOfAutofillProfileChanged,
-               void(const AutofillProfileChange& change));
-  MOCK_METHOD1(NotifyOfCreditCardChanged, void(const CreditCardChange& change));
-  MOCK_METHOD0(NotifyOfMultipleAutofillChanges, void());
-  MOCK_METHOD0(NotifyOfAddressConversionCompleted, void());
-  MOCK_METHOD1(NotifyThatSyncHasStarted, void(syncer::ModelType model_type));
+  MOCK_METHOD(WebDatabase*, GetDatabase, (), (override));
+  MOCK_METHOD(void,
+              AddObserver,
+              (AutofillWebDataServiceObserverOnDBSequence * observer),
+              (override));
+  MOCK_METHOD(void,
+              RemoveObserver,
+              (AutofillWebDataServiceObserverOnDBSequence * observer),
+              (override));
+  MOCK_METHOD(void, CommitChanges, (), (override));
+  MOCK_METHOD(void,
+              NotifyOfAutofillProfileChanged,
+              (const AutofillProfileChange& change),
+              (override));
+  MOCK_METHOD(void,
+              NotifyOfCreditCardChanged,
+              (const CreditCardChange& change),
+              (override));
+  MOCK_METHOD(void, NotifyOfMultipleAutofillChanges, (), (override));
+  MOCK_METHOD(void, NotifyOfAddressConversionCompleted, (), (override));
+  MOCK_METHOD(void,
+              NotifyThatSyncHasStarted,
+              (syncer::ModelType model_type),
+              (override));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockAutofillWebDataBackend);
diff --git a/components/autofill/core/browser/webdata/mock_autofill_webdata_service.h b/components/autofill/core/browser/webdata/mock_autofill_webdata_service.h
index 7c1fa69..cbf628b5b 100644
--- a/components/autofill/core/browser/webdata/mock_autofill_webdata_service.h
+++ b/components/autofill/core/browser/webdata/mock_autofill_webdata_service.h
@@ -17,15 +17,22 @@
  public:
   MockAutofillWebDataService();
 
-  MOCK_METHOD1(AddFormFields, void(const std::vector<FormFieldData>&));
-  MOCK_METHOD1(CancelRequest, void(int));
-  MOCK_METHOD4(GetFormValuesForElementName,
-               WebDataServiceBase::Handle(const std::u16string& name,
-                                          const std::u16string& prefix,
-                                          int limit,
-                                          WebDataServiceConsumer* consumer));
-  MOCK_METHOD1(RemoveExpiredAutocompleteEntries,
-               WebDataServiceBase::Handle(WebDataServiceConsumer* consumer));
+  MOCK_METHOD(void,
+              AddFormFields,
+              (const std::vector<FormFieldData>&),
+              (override));
+  MOCK_METHOD(void, CancelRequest, (int), (override));
+  MOCK_METHOD(WebDataServiceBase::Handle,
+              GetFormValuesForElementName,
+              (const std::u16string& name,
+               const std::u16string& prefix,
+               int limit,
+               WebDataServiceConsumer* consumer),
+              (override));
+  MOCK_METHOD(WebDataServiceBase::Handle,
+              RemoveExpiredAutocompleteEntries,
+              (WebDataServiceConsumer * consumer),
+              (override));
 
  protected:
   ~MockAutofillWebDataService() override;
diff --git a/components/autofill/core/browser/webdata/web_data_service_unittest.cc b/components/autofill/core/browser/webdata/web_data_service_unittest.cc
index 57a2cd5..121e827 100644
--- a/components/autofill/core/browser/webdata/web_data_service_unittest.cc
+++ b/components/autofill/core/browser/webdata/web_data_service_unittest.cc
@@ -85,9 +85,14 @@
 class MockAutofillWebDataServiceObserver
     : public AutofillWebDataServiceObserverOnDBSequence {
  public:
-  MOCK_METHOD1(AutofillEntriesChanged, void(const AutofillChangeList& changes));
-  MOCK_METHOD1(AutofillProfileChanged,
-               void(const AutofillProfileChange& change));
+  MOCK_METHOD(void,
+              AutofillEntriesChanged,
+              (const AutofillChangeList& changes),
+              (override));
+  MOCK_METHOD(void,
+              AutofillProfileChanged,
+              (const AutofillProfileChange& change),
+              (override));
 };
 
 class WebDataServiceTest : public testing::Test {
diff --git a/components/autofill/ios/browser/BUILD.gn b/components/autofill/ios/browser/BUILD.gn
index 66b7657d..e369d6b 100644
--- a/components/autofill/ios/browser/BUILD.gn
+++ b/components/autofill/ios/browser/BUILD.gn
@@ -56,6 +56,7 @@
     "//services/network/public/cpp",
     "//ui/accessibility",
     "//ui/gfx/geometry",
+    "//url",
   ]
 }
 
diff --git a/components/autofill/ios/browser/autofill_driver_ios.h b/components/autofill/ios/browser/autofill_driver_ios.h
index 8b3426c..97f2939 100644
--- a/components/autofill/ios/browser/autofill_driver_ios.h
+++ b/components/autofill/ios/browser/autofill_driver_ios.h
@@ -7,10 +7,12 @@
 
 #include <string>
 
+#include "base/containers/flat_map.h"
 #include "components/autofill/core/browser/autofill_client.h"
 #include "components/autofill/core/browser/autofill_driver.h"
 #include "components/autofill/core/browser/autofill_external_delegate.h"
 #include "components/autofill/core/browser/browser_autofill_manager.h"
+#include "url/origin.h"
 
 namespace web {
 class WebFrame;
@@ -45,9 +47,13 @@
   ui::AXTreeID GetAxTreeId() const override;
   scoped_refptr<network::SharedURLLoaderFactory> GetURLLoaderFactory() override;
   bool RendererIsAvailable() override;
-  void SendFormDataToRenderer(int query_id,
-                              RendererFormDataAction action,
-                              const FormData& data) override;
+  void SendFormDataToRenderer(
+      int query_id,
+      RendererFormDataAction action,
+      const FormData& data,
+      const url::Origin& triggered_origin,
+      const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map)
+      override;
   void PropagateAutofillPredictions(
       const std::vector<autofill::FormStructure*>& forms) override;
   void HandleParsedForms(const std::vector<const FormData*>& forms) override;
@@ -59,7 +65,7 @@
       const FieldGlobalId& field,
       const std::u16string& value) override;
   void SendFieldsEligibleForManualFillingToRenderer(
-      const std::vector<FieldRendererId>& fields) override;
+      const std::vector<FieldGlobalId>& fields) override;
 
   BrowserAutofillManager* autofill_manager() {
     return &browser_autofill_manager_;
diff --git a/components/autofill/ios/browser/autofill_driver_ios.mm b/components/autofill/ios/browser/autofill_driver_ios.mm
index 683cf140..514c0620 100644
--- a/components/autofill/ios/browser/autofill_driver_ios.mm
+++ b/components/autofill/ios/browser/autofill_driver_ios.mm
@@ -96,7 +96,9 @@
 void AutofillDriverIOS::SendFormDataToRenderer(
     int query_id,
     RendererFormDataAction action,
-    const FormData& data) {
+    const FormData& data,
+    const url::Origin& triggered_origin,
+    const base::flat_map<FieldGlobalId, ServerFieldType>& field_type_map) {
   web::WebFrame* web_frame = web::GetWebFrameWithId(web_state_, web_frame_id_);
   if (!web_frame) {
     return;
@@ -144,7 +146,7 @@
     const std::u16string& value) {}
 
 void AutofillDriverIOS::SendFieldsEligibleForManualFillingToRenderer(
-    const std::vector<FieldRendererId>& fields) {}
+    const std::vector<FieldGlobalId>& fields) {}
 
 void AutofillDriverIOS::RendererShouldClearFilledSection() {}
 
diff --git a/components/bookmarks/browser/bookmark_model.cc b/components/bookmarks/browser/bookmark_model.cc
index 256b94e..acf18994 100644
--- a/components/bookmarks/browser/bookmark_model.cc
+++ b/components/bookmarks/browser/bookmark_model.cc
@@ -210,8 +210,8 @@
   DCHECK(!is_root_node(node));
   const BookmarkNode* parent = node->parent();
   DCHECK(parent);
-  size_t index = size_t{parent->GetIndexOf(node)};
-  DCHECK_NE(size_t{-1}, index);
+  size_t index = static_cast<size_t>(parent->GetIndexOf(node));
+  DCHECK_NE(static_cast<size_t>(-1), index);
 
   // Removing a permanent node is problematic and can cause crashes elsewhere
   // that are difficult to trace back.
diff --git a/components/bookmarks/browser/bookmark_model_unittest.cc b/components/bookmarks/browser/bookmark_model_unittest.cc
index 4b0a263..35bf2b40 100644
--- a/components/bookmarks/browser/bookmark_model_unittest.cc
+++ b/components/bookmarks/browser/bookmark_model_unittest.cc
@@ -228,7 +228,9 @@
                           public BookmarkUndoDelegate {
  public:
   struct ObserverDetails {
-    ObserverDetails() { Set(nullptr, nullptr, size_t{-1}, size_t{-1}); }
+    ObserverDetails() {
+      Set(nullptr, nullptr, static_cast<size_t>(-1), static_cast<size_t>(-1));
+    }
 
     void Set(const BookmarkNode* node1,
              const BookmarkNode* node2,
@@ -297,7 +299,7 @@
                          const BookmarkNode* parent,
                          size_t index) override {
     ++added_count_;
-    observer_details_.Set(parent, nullptr, index, size_t{-1});
+    observer_details_.Set(parent, nullptr, index, static_cast<size_t>(-1));
   }
 
   void OnWillRemoveBookmarks(BookmarkModel* model,
@@ -315,13 +317,14 @@
                            const BookmarkNode* node,
                            const std::set<GURL>& removed_urls) override {
     ++removed_count_;
-    observer_details_.Set(parent, nullptr, old_index, size_t{-1});
+    observer_details_.Set(parent, nullptr, old_index, static_cast<size_t>(-1));
   }
 
   void BookmarkNodeChanged(BookmarkModel* model,
                            const BookmarkNode* node) override {
     ++changed_count_;
-    observer_details_.Set(node, nullptr, size_t{-1}, size_t{-1});
+    observer_details_.Set(node, nullptr, static_cast<size_t>(-1),
+                          static_cast<size_t>(-1));
   }
 
   void OnWillChangeBookmarkNode(BookmarkModel* model,
@@ -494,7 +497,7 @@
 
   const BookmarkNode* new_node = model_->AddURL(root, 0, title, url);
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   ASSERT_EQ(1u, root->children().size());
   ASSERT_EQ(title, new_node->GetTitle());
@@ -516,7 +519,7 @@
 
   const BookmarkNode* new_node = model_->AddURL(root, 0, title, url);
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   ASSERT_EQ(1u, root->children().size());
   ASSERT_EQ(title, new_node->GetTitle());
@@ -556,7 +559,7 @@
   const BookmarkNode* new_node =
       model_->AddURL(root, 0, title, url, &meta_info, time);
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   ASSERT_EQ(1u, root->children().size());
   ASSERT_EQ(title, new_node->GetTitle());
@@ -594,7 +597,7 @@
 
   const BookmarkNode* new_node = model_->AddURL(root, 0, title, url);
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   ASSERT_EQ(1u, root->children().size());
   ASSERT_EQ(title, new_node->GetTitle());
@@ -613,7 +616,7 @@
 
   const BookmarkNode* new_node = model_->AddFolder(root, 0, title);
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   ASSERT_EQ(1u, root->children().size());
   ASSERT_EQ(title, new_node->GetTitle());
@@ -628,7 +631,7 @@
   ClearCounts();
   model_->AddFolder(root, 0, title);
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 }
 
 TEST_F(BookmarkModelTest, AddFolderWithCreationTime) {
@@ -682,7 +685,7 @@
   model_->Remove(root->children().front().get());
   ASSERT_EQ(0u, root->children().size());
   AssertObserverCount(0, 0, 1, 0, 0, 1, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   // Make sure there is no mapping for the URL.
   ASSERT_TRUE(model_->GetMostRecentlyAddedUserNodeForURL(url) == nullptr);
@@ -705,7 +708,7 @@
   model_->Remove(root->children().front().get());
   ASSERT_EQ(0u, root->children().size());
   AssertObserverCount(0, 0, 1, 0, 0, 1, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
 
   // Make sure there is no mapping for the URL.
   ASSERT_TRUE(model_->GetMostRecentlyAddedUserNodeForURL(url) == nullptr);
@@ -765,7 +768,8 @@
   title = u"goo";
   model_->SetTitle(node, title);
   AssertObserverCount(0, 0, 0, 1, 0, 0, 1, 0, 0);
-  observer_details_.ExpectEquals(node, nullptr, size_t{-1}, size_t{-1});
+  observer_details_.ExpectEquals(node, nullptr, static_cast<size_t>(-1),
+                                 static_cast<size_t>(-1));
   EXPECT_EQ(title, node->GetTitle());
 
   // Should update the index.
@@ -833,7 +837,8 @@
   url = GURL("http://foo2.com");
   model_->SetURL(node, url);
   AssertObserverCount(0, 0, 0, 1, 0, 0, 1, 0, 0);
-  observer_details_.ExpectEquals(node, nullptr, size_t{-1}, size_t{-1});
+  observer_details_.ExpectEquals(node, nullptr, static_cast<size_t>(-1),
+                                 static_cast<size_t>(-1));
   EXPECT_EQ(url, node->url());
 }
 
@@ -879,7 +884,7 @@
   ClearCounts();
   model_->Remove(root->children().front().get());
   AssertObserverCount(0, 0, 1, 0, 0, 1, 0, 0, 0);
-  observer_details_.ExpectEquals(root, nullptr, 0, size_t{-1});
+  observer_details_.ExpectEquals(root, nullptr, 0, static_cast<size_t>(-1));
   EXPECT_TRUE(model_->GetMostRecentlyAddedUserNodeForURL(url) == nullptr);
   EXPECT_EQ(0u, root->children().size());
 
diff --git a/components/bookmarks/browser/bookmark_node_data_unittest.cc b/components/bookmarks/browser/bookmark_node_data_unittest.cc
index ee93dd59..ed7bd97 100644
--- a/components/bookmarks/browser/bookmark_node_data_unittest.cc
+++ b/components/bookmarks/browser/bookmark_node_data_unittest.cc
@@ -443,9 +443,10 @@
 #if !defined(OS_APPLE)
 TEST_F(BookmarkNodeDataTest, ReadFromPickleTooManyNodes) {
   // Test case determined by a fuzzer. See https://crbug.com/956583.
-  const char pickled_data[] = {0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
-                               0x00, 0x00, 0xff, 0x03, 0x03, 0x41};
-  base::Pickle pickle(pickled_data, sizeof(pickled_data));
+  const uint8_t pickled_data[] = {0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                  0x00, 0x00, 0xff, 0x03, 0x03, 0x41};
+  base::Pickle pickle(reinterpret_cast<const char*>(pickled_data),
+                      sizeof(pickled_data));
   BookmarkNodeData bookmark_node_data;
   EXPECT_FALSE(bookmark_node_data.ReadFromPickle(&pickle));
 }
diff --git a/components/bookmarks/browser/bookmark_utils.cc b/components/bookmarks/browser/bookmark_utils.cc
index 19769b3..7ed2721 100644
--- a/components/bookmarks/browser/bookmark_utils.cc
+++ b/components/bookmarks/browser/bookmark_utils.cc
@@ -479,7 +479,7 @@
 
   if (index) {
     if (selection.size() == 1 && selection[0]->is_url()) {
-      *index = size_t{real_parent->GetIndexOf(selection[0]) + 1};
+      *index = static_cast<size_t>(real_parent->GetIndexOf(selection[0]) + 1);
       DCHECK_NE(0u, *index);
     } else {
       *index = real_parent->children().size();
diff --git a/components/bookmarks/browser/bookmark_utils_unittest.cc b/components/bookmarks/browser/bookmark_utils_unittest.cc
index 73391f2..c62ef4c2 100644
--- a/components/bookmarks/browser/bookmark_utils_unittest.cc
+++ b/components/bookmarks/browser/bookmark_utils_unittest.cc
@@ -434,7 +434,7 @@
   // folder.
   std::vector<const BookmarkNode*> nodes;
   nodes.push_back(model->bookmark_bar_node());
-  size_t index = size_t{-1};
+  size_t index = static_cast<size_t>(-1);
   const BookmarkNode* real_parent =
       GetParentForNewNodes(model->bookmark_bar_node(), nodes, &index);
   EXPECT_EQ(real_parent, model->bookmark_bar_node());
diff --git a/components/bookmarks/browser/url_index.cc b/components/bookmarks/browser/url_index.cc
index 51b43f9..10b11c7d 100644
--- a/components/bookmarks/browser/url_index.cc
+++ b/components/bookmarks/browser/url_index.cc
@@ -84,7 +84,7 @@
   base::AutoLock url_lock(url_lock_);
   RemoveImpl(node, removed_urls);
   BookmarkNode* parent = node->parent();
-  return parent->Remove(size_t{parent->GetIndexOf(node)});
+  return parent->Remove(static_cast<size_t>(parent->GetIndexOf(node)));
 }
 
 void UrlIndex::SetUrl(BookmarkNode* node, const GURL& url) {
diff --git a/components/consent_auditor/consent_auditor_impl_unittest.cc b/components/consent_auditor/consent_auditor_impl_unittest.cc
index b7e303a6..96db5a08 100644
--- a/components/consent_auditor/consent_auditor_impl_unittest.cc
+++ b/components/consent_auditor/consent_auditor_impl_unittest.cc
@@ -349,11 +349,11 @@
   play_consent.set_consent_flow(ArcPlayTermsOfServiceConsent::SETUP);
 
   // Verify the hash: 2fd4e1c6 7a2d28fc ed849ee1 bb76e739 1b93eb12.
-  const char play_tos_hash[] = {0x2f, 0xd4, 0xe1, 0xc6, 0x7a, 0x2d, 0x28,
-                                0xfc, 0xed, 0x84, 0x9e, 0xe1, 0xbb, 0x76,
-                                0xe7, 0x39, 0x1b, 0x93, 0xeb, 0x12};
-  play_consent.set_play_terms_of_service_hash(
-      std::string(play_tos_hash, base::kSHA1Length));
+  const uint8_t play_tos_hash[] = {0x2f, 0xd4, 0xe1, 0xc6, 0x7a, 0x2d, 0x28,
+                                   0xfc, 0xed, 0x84, 0x9e, 0xe1, 0xbb, 0x76,
+                                   0xe7, 0x39, 0x1b, 0x93, 0xeb, 0x12};
+  play_consent.set_play_terms_of_service_hash(std::string(
+      reinterpret_cast<const char*>(play_tos_hash), base::kSHA1Length));
   play_consent.set_play_terms_of_service_text_length(7);
 
   consent_auditor()->RecordArcPlayConsent(kAccountId, play_consent);
@@ -371,7 +371,8 @@
       consent.arc_play_terms_of_service_consent();
 
   EXPECT_EQ(7, actual_play_consent.play_terms_of_service_text_length());
-  EXPECT_EQ(std::string(play_tos_hash, base::kSHA1Length),
+  EXPECT_EQ(std::string(reinterpret_cast<const char*>(play_tos_hash),
+                        base::kSHA1Length),
             actual_play_consent.play_terms_of_service_hash());
 
   EXPECT_EQ(kConfirmationMessageId, actual_play_consent.confirmation_grd_id());
diff --git a/components/content_creation/notes/android/java/src/org/chromium/components/content_creation/notes/models/FooterStyle.java b/components/content_creation/notes/android/java/src/org/chromium/components/content_creation/notes/models/FooterStyle.java
index 23ac6af..9c01390f 100644
--- a/components/content_creation/notes/android/java/src/org/chromium/components/content_creation/notes/models/FooterStyle.java
+++ b/components/content_creation/notes/android/java/src/org/chromium/components/content_creation/notes/models/FooterStyle.java
@@ -4,6 +4,13 @@
 
 package org.chromium.components.content_creation.notes.models;
 
+import android.graphics.BlendMode;
+import android.graphics.BlendModeColorFilter;
+import android.graphics.PorterDuff;
+import android.os.Build;
+import android.widget.ImageView;
+import android.widget.TextView;
+
 import androidx.annotation.ColorInt;
 
 /**
@@ -18,4 +25,15 @@
         this.textColor = textColor;
         this.logoColor = logoColor;
     }
+
+    public void apply(TextView footerLinkView, TextView footerTitleView, ImageView iconView) {
+        footerLinkView.setTextColor(textColor);
+        footerTitleView.setTextColor(textColor);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            iconView.setColorFilter(new BlendModeColorFilter(logoColor, BlendMode.SRC_IN));
+        } else {
+            iconView.setColorFilter(logoColor, PorterDuff.Mode.SRC_IN);
+        }
+    }
 }
diff --git a/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationDelegate.java b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationDelegate.java
index b7847f4..5cdc7a80 100644
--- a/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationDelegate.java
+++ b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationDelegate.java
@@ -10,6 +10,7 @@
 import androidx.annotation.IntDef;
 import androidx.annotation.Nullable;
 
+import org.chromium.base.Callback;
 import org.chromium.base.Function;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
@@ -178,6 +179,18 @@
     /* Returns whether whether the tab associated with this delegate is incognito. */
     boolean isIncognito();
 
+    /* Returns whether the delegate implementation wishes to present its own warning dialog gating
+     * the user launching an intent in incognito mode. If this method returns true,
+     * ExternalNavigationHandler will invoke presentLeavingIncognitoDialog(). If this method returns
+     * false, ExternalNavigationHandler will present its own dialog. */
+    boolean hasCustomLeavingIncognitoDialog();
+
+    /* Invoked when the user initiates a launch of an intent in incognito mode and the delegate has
+     * returned true for hasCustomLeavingIncognitoDialog(). The delegate should
+     * invoke onUserDecision() with the user's decision once obtained, passing true if the user has
+     * consented to launch the intent and false otherwise. */
+    void presentLeavingIncognitoDialog(Callback<Boolean> onUserDecision);
+
     /**
      * @param intent The intent to launch.
      * @return Whether the Intent points to an app that we trust and that launched this app.
diff --git a/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java
index 7e0ba128..91c210f 100644
--- a/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java
+++ b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java
@@ -950,6 +950,15 @@
         Context context = mDelegate.getContext();
         if (!canLaunchIncognitoIntent(intent, context)) return false;
 
+        if (mDelegate.hasCustomLeavingIncognitoDialog()) {
+            mDelegate.presentLeavingIncognitoDialog(shouldLaunch -> {
+                onUserDecidedWhetherToLaunchIncognitoIntent(
+                        shouldLaunch.booleanValue(), params, intent, fallbackUrl, proxy);
+            });
+
+            return true;
+        }
+
         try {
             AlertDialog dialog =
                     showLeavingIncognitoAlert(context, params, intent, fallbackUrl, proxy);
@@ -973,7 +982,6 @@
     protected AlertDialog showLeavingIncognitoAlert(final Context context,
             final ExternalNavigationParams params, final Intent intent, final GURL fallbackUrl,
             final boolean proxy) {
-        boolean closeTab = params.shouldCloseContentsOnOverrideUrlLoadingAndLaunchIntent();
         return new AlertDialog.Builder(context, R.style.Theme_Chromium_AlertDialog)
                 .setTitle(R.string.external_app_leave_incognito_warning_title)
                 .setMessage(R.string.external_app_leave_incognito_warning)
@@ -981,36 +989,49 @@
                         new OnClickListener() {
                             @Override
                             public void onClick(DialogInterface dialog, int which) {
-                                try {
-                                    startActivity(intent, proxy, mDelegate);
-                                    if (mDelegate.canCloseTabOnIncognitoIntentLaunch()
-                                            && closeTab) {
-                                        mDelegate.closeTab();
-                                    }
-                                } catch (ActivityNotFoundException e) {
-                                    // The activity that we thought was going to handle the intent
-                                    // no longer exists, so catch the exception and assume Chrome
-                                    // can handle it.
-                                    handleFallbackUrl(params, intent, fallbackUrl, false);
-                                }
+                                onUserDecidedWhetherToLaunchIncognitoIntent(
+                                        /*shouldLaunch=*/true, params, intent, fallbackUrl, proxy);
                             }
                         })
                 .setNegativeButton(R.string.external_app_leave_incognito_stay,
                         new OnClickListener() {
                             @Override
                             public void onClick(DialogInterface dialog, int which) {
-                                handleFallbackUrl(params, intent, fallbackUrl, false);
+                                onUserDecidedWhetherToLaunchIncognitoIntent(
+                                        /*shouldLaunch=*/false, params, intent, fallbackUrl, proxy);
                             }
                         })
                 .setOnCancelListener(new OnCancelListener() {
                     @Override
                     public void onCancel(DialogInterface dialog) {
-                        handleFallbackUrl(params, intent, fallbackUrl, false);
+                        onUserDecidedWhetherToLaunchIncognitoIntent(
+                                /*shouldLaunch=*/false, params, intent, fallbackUrl, proxy);
                     }
                 })
                 .show();
     }
 
+    private void onUserDecidedWhetherToLaunchIncognitoIntent(final boolean shouldLaunch,
+            final ExternalNavigationParams params, final Intent intent, final GURL fallbackUrl,
+            final boolean proxy) {
+        boolean closeTab = params.shouldCloseContentsOnOverrideUrlLoadingAndLaunchIntent();
+        if (shouldLaunch) {
+            try {
+                startActivity(intent, proxy, mDelegate);
+                if (mDelegate.canCloseTabOnIncognitoIntentLaunch() && closeTab) {
+                    mDelegate.closeTab();
+                }
+            } catch (ActivityNotFoundException e) {
+                // The activity that we thought was going to handle the intent
+                // no longer exists, so catch the exception and assume Chrome
+                // can handle it.
+                handleFallbackUrl(params, intent, fallbackUrl, false);
+            }
+        } else {
+            handleFallbackUrl(params, intent, fallbackUrl, false);
+        }
+    }
+
     /**
      * If some third-party app launched this app with an intent, and the URL got redirected, and the
      * user explicitly chose this app over other intent handlers, stay in the app unless there was a
diff --git a/components/external_intents/android/javatests/src/org/chromium/components/external_intents/ExternalNavigationHandlerTest.java b/components/external_intents/android/javatests/src/org/chromium/components/external_intents/ExternalNavigationHandlerTest.java
index 41bc537..7603f1a 100644
--- a/components/external_intents/android/javatests/src/org/chromium/components/external_intents/ExternalNavigationHandlerTest.java
+++ b/components/external_intents/android/javatests/src/org/chromium/components/external_intents/ExternalNavigationHandlerTest.java
@@ -40,6 +40,7 @@
 import org.mockito.junit.MockitoRule;
 import org.mockito.quality.Strictness;
 
+import org.chromium.base.Callback;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.Function;
 import org.chromium.base.IntentUtils;
@@ -1094,6 +1095,136 @@
     }
 
     @Test
+    @MediumTest
+    public void testFallbackUrl_FallbackToMarketApp_Incognito_DelegateHandleDialogPresentation() {
+        IntentFilter filter = new IntentFilter(Intent.ACTION_VIEW);
+        filter.addCategory(Intent.CATEGORY_BROWSABLE);
+        filter.addDataScheme("market");
+        ActivityMonitor monitor = InstrumentationRegistry.getInstrumentation().addMonitor(
+                filter, new Instrumentation.ActivityResult(Activity.RESULT_OK, null), true);
+        Intent dummyIntent = new Intent(mApplicationContextToRestore, DummyUiActivity.class);
+        dummyIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        Activity activity =
+                InstrumentationRegistry.getInstrumentation().startActivitySync(dummyIntent);
+        mDelegate.setContext(activity);
+        mDelegate.setCanLoadUrlInTab(true);
+        mDelegate.setShouldPresentLeavingIncognitoDialog(true);
+        try {
+            mDelegate.setCanResolveActivityForExternalSchemes(false);
+            String playUrl = "https://play.google.com/store/apps/details?id=com.imdb.mobile"
+                    + "&referrer=mypage";
+
+            String intent = "intent:///name/nm0000158#Intent;scheme=imdb;package=com.imdb.mobile;"
+                    + "S." + ExternalNavigationHandler.EXTRA_BROWSER_FALLBACK_URL + "="
+                    + Uri.encode(playUrl, null) + ";end;";
+
+            mUrlHandler.mCanShowIncognitoDialog = true;
+            ThreadUtils.runOnUiThreadBlocking(() -> {
+                checkUrl(intent).withIsIncognito(true).withHasUserGesture(true).expecting(
+                        OverrideUrlLoadingResultType.OVERRIDE_WITH_ASYNC_ACTION,
+                        OverrideUrlLoadingAsyncActionType.UI_GATING_INTENT_LAUNCH, START_INCOGNITO);
+                Assert.assertNull(mDelegate.startActivityIntent);
+                Assert.assertNull(mUrlHandler.mNewUrlAfterClobbering);
+
+                // Verify that the incognito dialog was not shown.
+                Assert.assertNull(mUrlHandler.mShownIncognitoAlertDialog);
+
+                // Verify that the delegate was given the opportunity to present the dialog.
+                Assert.assertNotNull(mDelegate.incognitoDialogUserDecisionCallback);
+
+                // Inform the handler that the user decided not to launch the intent and verify that
+                // the appropriate URL is navigated to in the browser.
+                mDelegate.incognitoDialogUserDecisionCallback.onResult(new Boolean(false));
+                Assert.assertEquals(playUrl, mUrlHandler.mNewUrlAfterClobbering);
+                mUrlHandler.mNewUrlAfterClobbering = null;
+                mDelegate.incognitoDialogUserDecisionCallback = null;
+
+                checkUrl(intent).withIsIncognito(true).withHasUserGesture(true).expecting(
+                        OverrideUrlLoadingResultType.OVERRIDE_WITH_ASYNC_ACTION,
+                        OverrideUrlLoadingAsyncActionType.UI_GATING_INTENT_LAUNCH, START_INCOGNITO);
+                Assert.assertNull(mDelegate.startActivityIntent);
+
+                // Verify that the incognito dialog was not shown.
+                Assert.assertNull(mUrlHandler.mShownIncognitoAlertDialog);
+
+                // Verify that the delegate was given the opportunity to present the dialog.
+                Assert.assertNotNull(mDelegate.incognitoDialogUserDecisionCallback);
+
+                // Inform the handler that the user decided to launch the intent and verify that
+                // the intent was launched.
+                mDelegate.incognitoDialogUserDecisionCallback.onResult(new Boolean(true));
+                Assert.assertNull(mUrlHandler.mNewUrlAfterClobbering);
+                Assert.assertEquals(1, monitor.getHits());
+                Assert.assertEquals("market://details?id=com.imdb.mobile&referrer=mypage",
+                        mDelegate.startActivityIntent.getDataString());
+            });
+        } finally {
+            activity.finish();
+            InstrumentationRegistry.getInstrumentation().removeMonitor(monitor);
+        }
+    }
+
+    @Test
+    @MediumTest
+    public void testFallbackUrl_ChromeCanHandle_Incognito_DelegateHandleDialogPresentation() {
+        mDelegate.add(new IntentActivity("https", "package"));
+        Intent dummyIntent = new Intent(mApplicationContextToRestore, DummyUiActivity.class);
+        dummyIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        Activity activity =
+                InstrumentationRegistry.getInstrumentation().startActivitySync(dummyIntent);
+        mDelegate.setContext(activity);
+        mDelegate.setCanLoadUrlInTab(true);
+        mDelegate.setShouldPresentLeavingIncognitoDialog(true);
+        try {
+            String intent = "intent://example.com#Intent;scheme=https;"
+                    + "S.browser_fallback_url=http%3A%2F%2Fgoogle.com;end";
+
+            mUrlHandler.mResolveInfoContainsSelf = true;
+            mUrlHandler.mCanShowIncognitoDialog = true;
+            ThreadUtils.runOnUiThreadBlocking(() -> {
+                checkUrl(intent).withIsIncognito(true).withHasUserGesture(true).expecting(
+                        OverrideUrlLoadingResultType.OVERRIDE_WITH_ASYNC_ACTION,
+                        OverrideUrlLoadingAsyncActionType.UI_GATING_INTENT_LAUNCH, START_INCOGNITO);
+                Assert.assertNull(mDelegate.startActivityIntent);
+                Assert.assertNull(mUrlHandler.mNewUrlAfterClobbering);
+
+                // Verify that the incognito dialog was not shown.
+                Assert.assertNull(mUrlHandler.mShownIncognitoAlertDialog);
+
+                // Verify that the delegate was given the opportunity to present the dialog.
+                Assert.assertNotNull(mDelegate.incognitoDialogUserDecisionCallback);
+
+                // Inform the handler that the user decided not to launch the intent and verify that
+                // the appropriate URL is navigated to in the browser.
+                mDelegate.incognitoDialogUserDecisionCallback.onResult(new Boolean(false));
+                Assert.assertEquals("https://example.com/", mUrlHandler.mNewUrlAfterClobbering);
+
+                mUrlHandler.mNewUrlAfterClobbering = null;
+                mUrlHandler.mResolveInfoContainsSelf = false;
+                mDelegate.incognitoDialogUserDecisionCallback = null;
+
+                checkUrl(intent).withIsIncognito(true).withHasUserGesture(true).expecting(
+                        OverrideUrlLoadingResultType.OVERRIDE_WITH_ASYNC_ACTION,
+                        OverrideUrlLoadingAsyncActionType.UI_GATING_INTENT_LAUNCH, START_INCOGNITO);
+                Assert.assertNull(mDelegate.startActivityIntent);
+
+                // Verify that the incognito dialog was not shown.
+                Assert.assertNull(mUrlHandler.mShownIncognitoAlertDialog);
+
+                // Verify that the delegate was given the opportunity to present the dialog.
+                Assert.assertNotNull(mDelegate.incognitoDialogUserDecisionCallback);
+
+                // Inform the handler that the user decided not to launch the intent and verify that
+                // the appropriate URL is navigated to in the browser.
+                mDelegate.incognitoDialogUserDecisionCallback.onResult(new Boolean(false));
+                Assert.assertEquals("http://google.com/", mUrlHandler.mNewUrlAfterClobbering);
+            });
+        } finally {
+            activity.finish();
+        }
+    }
+
+    @Test
     @SmallTest
     public void testFallbackUrl_SubframeFallbackToMarketApp() {
         mDelegate.setCanResolveActivityForExternalSchemes(false);
@@ -2346,6 +2477,16 @@
         }
 
         @Override
+        public boolean hasCustomLeavingIncognitoDialog() {
+            return mShouldPresentLeavingIncognitoDialog;
+        }
+
+        @Override
+        public void presentLeavingIncognitoDialog(Callback<Boolean> onUserDecision) {
+            incognitoDialogUserDecisionCallback = onUserDecision;
+        }
+
+        @Override
         public void loadUrlIfPossible(LoadUrlParams loadUrlParams) {}
 
         @Override
@@ -2502,9 +2643,14 @@
             mCanLoadUrlInTab = value;
         }
 
+        public void setShouldPresentLeavingIncognitoDialog(boolean value) {
+            mShouldPresentLeavingIncognitoDialog = value;
+        }
+
         public Intent startActivityIntent;
         public boolean startIncognitoIntentCalled;
         public boolean maybeSetRequestMetadataCalled;
+        public Callback<Boolean> incognitoDialogUserDecisionCallback;
 
         private String mReferrerWebappPackageName;
 
@@ -2521,6 +2667,7 @@
         private boolean mIsIntentToAutofillAssistant;
         private @IntentToAutofillAllowingAppResult int mAutofillAssistantAllowAppOverrideResult;
         private boolean mCanLoadUrlInTab;
+        private boolean mShouldPresentLeavingIncognitoDialog;
         private Context mContext;
     }
 
diff --git a/components/flags_strings.grdp b/components/flags_strings.grdp
index ac83ec6a..c3c6b77e 100644
--- a/components/flags_strings.grdp
+++ b/components/flags_strings.grdp
@@ -21,7 +21,8 @@
   <message name="IDS_FLAGS_UI_PAGE_WARNING_EXPLANATION" desc="A warning stating what the user gets exposed to by enabling one the features.">
     By enabling these features, you could lose browser data or
     compromise your security or privacy. Enabled features apply to all
-    users of this browser.
+    users of this browser. If you are an enterprise admin you should
+    not be using these flags in production.
   </message>
   <message name="IDS_FLAGS_UI_OWNER_WARNING" translateable="false" desc="A warning stating what system-wide features can only be set by the owner.">
     Flags that apply system-wide can only be set by the owner: <ph name="OWNER_EMAIL">$1<ex>owner@email.com</ex></ph>
diff --git a/components/flags_strings_grdp/IDS_FLAGS_UI_PAGE_WARNING_EXPLANATION.png.sha1 b/components/flags_strings_grdp/IDS_FLAGS_UI_PAGE_WARNING_EXPLANATION.png.sha1
new file mode 100644
index 0000000..f957e12
--- /dev/null
+++ b/components/flags_strings_grdp/IDS_FLAGS_UI_PAGE_WARNING_EXPLANATION.png.sha1
@@ -0,0 +1 @@
+2cb912ca7d1f9393503508bc4fa199258508c920
\ No newline at end of file
diff --git a/components/history/core/browser/visit_tracker.cc b/components/history/core/browser/visit_tracker.cc
index 0b8d5d34..d96c6bc0 100644
--- a/components/history/core/browser/visit_tracker.cc
+++ b/components/history/core/browser/visit_tracker.cc
@@ -28,8 +28,8 @@
 // to optimize lookup.
 VisitID VisitTracker::GetLastVisit(ContextID context_id,
                                    int nav_entry_id,
-                                   const GURL& referrer) {
-  if (referrer.is_empty() || !context_id)
+                                   const GURL& url) {
+  if (url.is_empty() || !context_id)
     return 0;
 
   auto i = contexts_.find(context_id);
@@ -56,13 +56,13 @@
   // two out edges in our visit graph.
   for (int i = static_cast<int>(transitions.size()) - 1; i >= 0; i--) {
     if (transitions[i].nav_entry_id <= nav_entry_id &&
-            transitions[i].url == referrer) {
+        transitions[i].url == url) {
       // Found it.
       return transitions[i].visit_id;
     }
   }
 
-  // We can't find the referrer.
+  // We can't find the URL.
   return 0;
 }
 
diff --git a/components/location/android/BUILD.gn b/components/location/android/BUILD.gn
index b0b25f33..faf8947 100644
--- a/components/location/android/BUILD.gn
+++ b/components/location/android/BUILD.gn
@@ -54,11 +54,12 @@
 source_set("test_support") {
   testonly = true
   sources = [
+    "location_settings_dialog_context.h",
+    "location_settings_dialog_outcome.h",
     "mock_location_settings.cc",
     "mock_location_settings.h",
   ]
   deps = [
-    ":location_settings_dialog_enums_java",
     ":settings",
     "//base",
   ]
diff --git a/components/omnibox/browser/actions/omnibox_pedal.cc b/components/omnibox/browser/actions/omnibox_pedal.cc
index f5018dc..7513ced7 100644
--- a/components/omnibox/browser/actions/omnibox_pedal.cc
+++ b/components/omnibox/browser/actions/omnibox_pedal.cc
@@ -72,7 +72,8 @@
     return false;
   }
   bool changed = false;
-  ptrdiff_t index = ptrdiff_t{Size()} - ptrdiff_t{erase_sequence.Size()};
+  ptrdiff_t index = static_cast<ptrdiff_t>(Size()) -
+                    static_cast<ptrdiff_t>(erase_sequence.Size());
   while (index >= 0) {
     if (MatchesAt(erase_sequence, index, 0)) {
       // Erase sequence matched by actual removal from container.
@@ -83,7 +84,8 @@
       }
       changed = true;
       index = std::min(index - 1,
-                       ptrdiff_t{Size()} - ptrdiff_t{erase_sequence.Size()});
+                       static_cast<ptrdiff_t>(Size()) -
+                           static_cast<ptrdiff_t>(erase_sequence.Size()));
     } else {
       --index;
     }
diff --git a/components/optimization_guide/content/mojom/page_text_service.mojom b/components/optimization_guide/content/mojom/page_text_service.mojom
index 6dd6113..5b81e8c 100644
--- a/components/optimization_guide/content/mojom/page_text_service.mojom
+++ b/components/optimization_guide/content/mojom/page_text_service.mojom
@@ -9,7 +9,10 @@
 // The events at which taking a text dump are supported.
 enum TextDumpEvent {
   // The first layout on the page. Equal to
-  // blink::WebMeaningfulLayout::kFinishedParsing.
+  // blink::WebMeaningfulLayout::kFinishedParsing. Note that the text dumped at
+  // this event is not deterministic due to races in the renderer. In particular
+  // some text that may have been populated after the "real" first layout event
+  // may also be captured.
   kFirstLayout,
 
   // The page is finished loading. Equal to
diff --git a/components/paint_preview/common/serial_utils.cc b/components/paint_preview/common/serial_utils.cc
index 90141900..b43fbf18 100644
--- a/components/paint_preview/common/serial_utils.cc
+++ b/components/paint_preview/common/serial_utils.cc
@@ -20,14 +20,14 @@
   uint32_t content_id;
 
   // The size of the subframe in the local coordinates when it was drawn.
-  int64_t subframe_width;
-  int64_t subframe_height;
+  float subframe_width;
+  float subframe_height;
 
   // The rect of the subframe in its parent frame's root coordinate system.
-  int64_t transformed_x;
-  int64_t transformed_y;
-  int64_t transformed_width;
-  int64_t transformed_height;
+  float transformed_x;
+  float transformed_y;
+  float transformed_width;
+  float transformed_height;
 };
 #pragma pack(pop)
 
@@ -134,8 +134,8 @@
   auto* context = reinterpret_cast<DeserializationContext*>(ctx);
   context->insert(
       {rect_data.content_id,
-       gfx::Rect(rect_data.transformed_x, rect_data.transformed_y,
-                 rect_data.transformed_width, rect_data.transformed_height)});
+       gfx::RectF(rect_data.transformed_x, rect_data.transformed_y,
+                  rect_data.transformed_width, rect_data.transformed_height)});
   return MakeEmptyPicture();
 }
 
diff --git a/components/paint_preview/common/serial_utils.h b/components/paint_preview/common/serial_utils.h
index 645d86f..4c6117b 100644
--- a/components/paint_preview/common/serial_utils.h
+++ b/components/paint_preview/common/serial_utils.h
@@ -16,7 +16,7 @@
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkSerialProcs.h"
 #include "third_party/skia/include/core/SkTypeface.h"
-#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/rect_f.h"
 
 namespace paint_preview {
 
@@ -71,7 +71,7 @@
 };
 
 // Maps a content ID to a clip rect.
-using DeserializationContext = base::flat_map<uint32_t, gfx::Rect>;
+using DeserializationContext = base::flat_map<uint32_t, gfx::RectF>;
 
 // A pair that contains a frame's |SkPicture| and its associated scroll offsets.
 // Used in |LoadedFramesDeserialContext| to correctly replay the scroll state
diff --git a/components/paint_preview/common/serialized_recording_unittest.cc b/components/paint_preview/common/serialized_recording_unittest.cc
index 1ba72b7..3923746 100644
--- a/components/paint_preview/common/serialized_recording_unittest.cc
+++ b/components/paint_preview/common/serialized_recording_unittest.cc
@@ -38,7 +38,7 @@
     gfx::Size bounds,
     PictureSerializationContext* context,
     DeserializationContext* expected_deserialization_context,
-    base::flat_map<base::UnguessableToken, gfx::Rect> subframes) {
+    base::flat_map<base::UnguessableToken, gfx::RectF> subframes) {
   SkRect sk_bounds = SkRect::MakeWH(bounds.width(), bounds.height());
   SkPictureRecorder recorder;
   SkCanvas* canvas = recorder.beginRecording(sk_bounds);
@@ -49,7 +49,7 @@
 
   for (const auto& subframe : subframes) {
     const base::UnguessableToken& subframe_id = subframe.first;
-    gfx::Rect clip_rect = subframe.second;
+    gfx::RectF clip_rect = subframe.second;
     SkRect rect = SkRect::MakeXYWH(clip_rect.x(), clip_rect.y(),
                                    clip_rect.width(), clip_rect.height());
     sk_sp<SkPicture> temp = SkPicture::MakePlaceholder(rect);
@@ -221,9 +221,9 @@
                               /*is_main_frame=*/true);
 
   base::UnguessableToken subframe0 = base::UnguessableToken::Create();
-  gfx::Rect subframe0_rect = gfx::Rect(5, 10, 10, 15);
+  gfx::RectF subframe0_rect(5, 10, 10, 15);
   base::UnguessableToken subframe1 = base::UnguessableToken::Create();
-  gfx::Rect subframe1_rect = gfx::Rect(5, 10, 10, 15);
+  gfx::RectF subframe1_rect(5, 10, 10, 15);
 
   DeserializationContext expected;
   sk_sp<const SkPicture> pic = PaintGrayPictureWithSubframes(
diff --git a/components/paint_preview/player/android/player_compositor_delegate_android_unittest.cc b/components/paint_preview/player/android/player_compositor_delegate_android_unittest.cc
index 193baae..1376c63 100644
--- a/components/paint_preview/player/android/player_compositor_delegate_android_unittest.cc
+++ b/components/paint_preview/player/android/player_compositor_delegate_android_unittest.cc
@@ -11,6 +11,7 @@
 #include "components/services/paint_preview_compositor/public/mojom/paint_preview_compositor.mojom.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/rect_f.h"
 
 using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
@@ -36,9 +37,10 @@
   frame_data_subframe_1->scroll_offsets = gfx::Size(55, 65);
   frame_data_subframe_2->scroll_offsets = gfx::Size(15, 25);
 
-  mojom::SubframeClipRect clip_rect1(subframe_1_guid, gfx::Rect(5, 10, 50, 60));
+  mojom::SubframeClipRect clip_rect1(subframe_1_guid,
+                                     gfx::RectF(5, 10, 50, 60));
   mojom::SubframeClipRect clip_rect2(subframe_2_guid,
-                                     gfx::Rect(15, 25, 30, 40));
+                                     gfx::RectF(15, 25, 30, 40));
   frame_data_main->subframes.push_back(clip_rect1.Clone());
   frame_data_subframe_1->subframes.push_back(clip_rect2.Clone());
 
diff --git a/components/password_manager/core/browser/BUILD.gn b/components/password_manager/core/browser/BUILD.gn
index d13c8ffa..3bddc23 100644
--- a/components/password_manager/core/browser/BUILD.gn
+++ b/components/password_manager/core/browser/BUILD.gn
@@ -189,6 +189,8 @@
     "password_store_factory_util.h",
     "password_store_impl.cc",
     "password_store_impl.h",
+    "password_store_interface.cc",
+    "password_store_interface.h",
     "password_store_signin_notifier.h",
     "password_store_sync.cc",
     "password_store_sync.h",
diff --git a/components/password_manager/core/browser/leak_detection/encryption_utils_unittest.cc b/components/password_manager/core/browser/leak_detection/encryption_utils_unittest.cc
index 5411f1d..6117c7d 100644
--- a/components/password_manager/core/browser/leak_detection/encryption_utils_unittest.cc
+++ b/components/password_manager/core/browser/leak_detection/encryption_utils_unittest.cc
@@ -57,11 +57,13 @@
 TEST(EncryptionUtils, HashUsername) {
   // Same test case as used by the server-side implementation:
   // go/passwords-leak-test
-  constexpr char kExpected[] = {0x3D, 0x70, 0xD3, 0x7B, 0xFC, 0x1A, 0x3D, 0x81,
-                                0x45, 0xE6, 0xC7, 0xA3, 0xA4, 0xD7, 0x92, 0x76,
-                                0x61, 0xC1, 0xE8, 0xDF, 0x82, 0xBD, 0x0C, 0x9F,
-                                0x61, 0x9A, 0xA3, 0xC9, 0x96, 0xEC, 0x4C, 0xB3};
-  EXPECT_THAT(HashUsername("jonsnow"), ElementsAreArray(kExpected));
+  constexpr uint8_t kExpected[] = {
+      0x3D, 0x70, 0xD3, 0x7B, 0xFC, 0x1A, 0x3D, 0x81, 0x45, 0xE6, 0xC7,
+      0xA3, 0xA4, 0xD7, 0x92, 0x76, 0x61, 0xC1, 0xE8, 0xDF, 0x82, 0xBD,
+      0x0C, 0x9F, 0x61, 0x9A, 0xA3, 0xC9, 0x96, 0xEC, 0x4C, 0xB3};
+  EXPECT_THAT(HashUsername("jonsnow"),
+              ElementsAreArray(reinterpret_cast<const char*>(kExpected),
+                               base::size(kExpected)));
 }
 
 TEST(EncryptionUtils, BucketizeUsername) {
diff --git a/components/password_manager/core/browser/password_store.cc b/components/password_manager/core/browser/password_store.cc
index e676c8e..691b518d 100644
--- a/components/password_manager/core/browser/password_store.cc
+++ b/components/password_manager/core/browser/password_store.cc
@@ -93,12 +93,6 @@
 
 }  // namespace
 
-void PasswordStore::Observer::OnLoginsChangedIn(
-    PasswordStore* store,
-    const PasswordStoreChangeList& changes) {
-  OnLoginsChanged(changes);
-}
-
 void PasswordStore::DatabaseInsecureCredentialsObserver::
     OnInsecureCredentialsChangedIn(PasswordStore* store) {
   OnInsecureCredentialsChanged();
@@ -1334,7 +1328,7 @@
 }
 
 void PasswordStore::MarkOldGoogleLoginsRemoved(bool success) {
-  if (success) {
+  if (success && prefs_ && !shutdown_called_) {
     prefs_->SetBoolean(prefs::kWereOldGoogleLoginsRemoved, true);
   }
 }
diff --git a/components/password_manager/core/browser/password_store.h b/components/password_manager/core/browser/password_store.h
index 06b91c2..3d9d52e 100644
--- a/components/password_manager/core/browser/password_store.h
+++ b/components/password_manager/core/browser/password_store.h
@@ -22,7 +22,6 @@
 #include "base/time/time.h"
 #include "base/types/strong_alias.h"
 #include "build/build_config.h"
-#include "components/keyed_service/core/refcounted_keyed_service.h"
 #include "components/password_manager/core/browser/hash_password_manager.h"
 #include "components/password_manager/core/browser/insecure_credentials_table.h"
 #include "components/password_manager/core/browser/password_form_digest.h"
@@ -30,6 +29,7 @@
 #include "components/password_manager/core/browser/password_reuse_detector.h"
 #include "components/password_manager/core/browser/password_reuse_detector_consumer.h"
 #include "components/password_manager/core/browser/password_store_change.h"
+#include "components/password_manager/core/browser/password_store_interface.h"
 #include "components/password_manager/core/browser/password_store_sync.h"
 
 class PrefService;
@@ -57,40 +57,15 @@
 
 using PasswordHashDataList = absl::optional<std::vector<PasswordHashData>>;
 
-// Interface for storing form passwords in a platform-specific secure way.
+// Partial, cross-platform implementation for storing form passwords.
 // The login request/manipulation API is not threadsafe and must be used
 // from the UI thread.
-// Implementations, however, should carry out most tasks asynchronously on a
-// background sequence: the base class provides functionality to facilitate
-// this. I/O heavy initialization should also be performed asynchronously in
-// this manner. If this deferred initialization fails, all subsequent method
-// calls should fail without side effects, return no data, and send no
-// notifications. PasswordStoreSync is a hidden base class because only
-// PasswordSyncBridge needs to access these methods.
+// PasswordStoreSync is a hidden base class because only PasswordSyncBridge
+// needs to access these methods.
+// TODO(crbug.com/1217071): Move PasswordStoreSync to local backend.
 class PasswordStore : protected PasswordStoreSync,
-                      public RefcountedKeyedService {
+                      public PasswordStoreInterface {
  public:
-  // An interface used to notify clients (observers) of this object that data in
-  // the password store has changed. Register the observer via
-  // PasswordStore::AddObserver.
-  class Observer {
-   public:
-    // Notifies the observer that password data changed. Will be called from
-    // the UI thread.
-    virtual void OnLoginsChanged(const PasswordStoreChangeList& changes) = 0;
-
-    // Like OnLoginsChanged(), but also receives the originating PasswordStore
-    // as a parameter. This is useful for observers that observe changes in both
-    // the profile-scoped and the account-scoped store. The default
-    // implementation simply calls OnLoginsChanged(), so observers that don't
-    // care about the store can just ignore this.
-    virtual void OnLoginsChangedIn(PasswordStore* store,
-                                   const PasswordStoreChangeList& changes);
-
-   protected:
-    virtual ~Observer() = default;
-  };
-
   class DatabaseInsecureCredentialsObserver {
     // An interface used to notify clients (observers) of this object that the
     // list of insecure credentials in the password store has changed.
@@ -124,6 +99,7 @@
   PasswordStore();
 
   // Always call this too on the UI thread.
+  // TODO(crbug.bom/1218413): Move initialization into the core interface, too.
   bool Init(
       PrefService* prefs,
       base::RepeatingClosure sync_enabled_or_disabled_cb = base::DoNothing());
@@ -137,48 +113,44 @@
   // If |helper| is null, clears the the currently set helper if any. Unless a
   // helper is set, affiliation-based matching is disabled. The passed |helper|
   // must already be initialized if it is non-null.
+  // TODO(crbug.bom/1218413): Inject into constructor or `Init()` instead.
   void SetAffiliatedMatchHelper(std::unique_ptr<AffiliatedMatchHelper> helper);
   AffiliatedMatchHelper* affiliated_match_helper() const {
     return affiliated_match_helper_.get();
   }
 
-  // Adds the given PasswordForm to the secure password store asynchronously.
-  virtual void AddLogin(const PasswordForm& form);
-
-  // Updates the matching PasswordForm in the secure password store (async).
-  // If any of the primary key fields (signon_realm, url, username_element,
-  // username_value, password_element) are updated, then the second version of
-  // the method must be used that takes |old_primary_key|, i.e., the old values
-  // for the primary key fields (the rest of the fields are ignored).
-  virtual void UpdateLogin(const PasswordForm& form);
-  virtual void UpdateLoginWithPrimaryKey(const PasswordForm& new_form,
-                                         const PasswordForm& old_primary_key);
-
-  // Removes the matching PasswordForm from the secure password store (async).
-  virtual void RemoveLogin(const PasswordForm& form);
-
-  // Remove all logins whose origins match the given filter and that were
-  // created in the given date range. |completion| will be posted to the
-  // |main_task_runner_| after deletions have been completed and notifications
-  // have been sent out. |sync_completion| will be posted to
-  // |main_task_runner_| once the deletions have also been propagated to the
-  // server (or, in rare cases, if the user permanently disables Sync or
-  // deletions haven't been propagated after 30 seconds). This is
-  // only relevant for Sync users and for account store users - for other users,
-  // |sync_completion| will be run immediately after |completion|.
+  // PasswordStoreCore:
+  bool IsAbleToSavePasswords() const override;
+  void AddLogin(const PasswordForm& form) override;
+  void UpdateLogin(const PasswordForm& form) override;
+  void UpdateLoginWithPrimaryKey(const PasswordForm& new_form,
+                                 const PasswordForm& old_primary_key) override;
+  void RemoveLogin(const PasswordForm& form) override;
   void RemoveLoginsByURLAndTime(
       const base::RepeatingCallback<bool(const GURL&)>& url_filter,
       base::Time delete_begin,
       base::Time delete_end,
       base::OnceClosure completion,
-      base::OnceCallback<void(bool)> sync_completion = base::NullCallback());
-
-  // Removes all logins created in the given date range. If |completion| is not
-  // null, it will be posted to the |main_task_runner_| after deletions have
-  // been completed and notification have been sent out.
+      base::OnceCallback<void(bool)> sync_completion =
+          base::NullCallback()) override;
   void RemoveLoginsCreatedBetween(base::Time delete_begin,
                                   base::Time delete_end,
-                                  base::OnceClosure completion);
+                                  base::OnceClosure completion) override;
+  void DisableAutoSignInForOrigins(
+      const base::RepeatingCallback<bool(const GURL&)>& origin_filter,
+      base::OnceClosure completion) override;
+  void Unblocklist(const PasswordFormDigest& form_digest,
+                   base::OnceClosure completion) override;
+  void GetLogins(const PasswordFormDigest& form,
+                 PasswordStoreConsumer* consumer) override;
+  void GetLoginsByPassword(const std::u16string& plain_text_password,
+                           PasswordStoreConsumer* consumer) override;
+  void GetAutofillableLogins(PasswordStoreConsumer* consumer) override;
+  void GetAllLogins(PasswordStoreConsumer* consumer) override;
+  void GetAllLoginsWithAffiliationAndBrandingInformation(
+      PasswordStoreConsumer* consumer) override;
+  void AddObserver(Observer* observer) override;
+  void RemoveObserver(Observer* observer) override;
 
   // Removes all the stats created in the given date range.
   // If |origin_filter| is not null, only statistics for matching origins are
@@ -191,48 +163,6 @@
       base::Time delete_end,
       base::OnceClosure completion);
 
-  // Sets the 'skip_zero_click' flag for all logins in the database that match
-  // |origin_filter| to 'true'. |completion| will be posted to the
-  // |main_task_runner_| after these modifications are completed and
-  // notifications are sent out.
-  void DisableAutoSignInForOrigins(
-      const base::RepeatingCallback<bool(const GURL&)>& origin_filter,
-      base::OnceClosure completion);
-
-  // Unblocklists the login with |form_digest| by deleting all the corresponding
-  // blocklisted entries. If |completion| is not null, it will be posted to the
-  // |main_task_runner_| after deletions have been completed. Should be called
-  // on the UI thread.
-  virtual void Unblocklist(const PasswordFormDigest& form_digest,
-                           base::OnceClosure completion);
-
-  // Searches for a matching PasswordForm, and notifies |consumer| on
-  // completion. The request will be cancelled if the consumer is destroyed.
-  virtual void GetLogins(const PasswordFormDigest& form,
-                         PasswordStoreConsumer* consumer);
-
-  // Searches for credentials with the specified |plain_text_password|, and
-  // notifies |consumer| on completion. The request will be cancelled if the
-  // consumer is destroyed.
-  void GetLoginsByPassword(const std::u16string& plain_text_password,
-                           PasswordStoreConsumer* consumer);
-
-  // Gets the complete list of PasswordForms that are not blocklist entries--and
-  // are thus auto-fillable. |consumer| will be notified on completion.
-  // The request will be cancelled if the consumer is destroyed.
-  virtual void GetAutofillableLogins(PasswordStoreConsumer* consumer);
-
-  // Gets the complete list of PasswordForms (regardless of their blocklist
-  // status) and notify |consumer| on completion. The request will be cancelled
-  // if the consumer is destroyed.
-  virtual void GetAllLogins(PasswordStoreConsumer* consumer);
-
-  // Gets the complete list of PasswordForms, regardless of their blocklist
-  // status. Also fills in affiliation and branding information for Android
-  // credentials.
-  virtual void GetAllLoginsWithAffiliationAndBrandingInformation(
-      PasswordStoreConsumer* consumer);
-
   // Reports usage metrics for the database. |sync_username|, and
   // |custom_passphrase_sync_enabled|, and |is_under_advanced_protection|
   // determine some of the UMA stats that may be reported.
@@ -293,12 +223,6 @@
   // indicates whether any data was actually cleared.
   void ClearStore(base::OnceCallback<void(bool)> completion);
 
-  // Adds an observer to be notified when the password store data changes.
-  void AddObserver(Observer* observer);
-
-  // Removes |observer| from the observer list.
-  void RemoveObserver(Observer* observer);
-
   // Adds an observer to be notified when the list of insecure passwords in
   // the password store changes.
   void AddDatabaseInsecureCredentialsObserver(
@@ -311,9 +235,6 @@
   // Schedules the given |task| to be run on the PasswordStore's TaskRunner.
   bool ScheduleTask(base::OnceClosure task);
 
-  // Returns true iff initialization was successful.
-  virtual bool IsAbleToSavePasswords() const;
-
   // For sync codebase only: instantiates a proxy controller delegate to
   // interact with PasswordSyncBridge. Must be called from the UI thread.
   std::unique_ptr<syncer::ProxyModelTypeControllerDelegate>
diff --git a/components/password_manager/core/browser/password_store_interface.cc b/components/password_manager/core/browser/password_store_interface.cc
new file mode 100644
index 0000000..acb7905
--- /dev/null
+++ b/components/password_manager/core/browser/password_store_interface.cc
@@ -0,0 +1,23 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/password_manager/core/browser/password_store_interface.h"
+#include "base/notreached.h"
+
+namespace password_manager {
+
+void PasswordStoreInterface::Observer::OnLoginsChangedIn(
+    PasswordStoreInterface* store,
+    const PasswordStoreChangeList& changes) {
+  OnLoginsChanged(changes);
+}
+
+void PasswordStoreInterface::Observer::OnLoginsRetained(
+    const std::vector<PasswordForm>& retained_passwords) {
+  // TODO(crbug.com/1217070): Make sure observers use this notification when
+  // it is emitted.
+  NOTIMPLEMENTED();
+}
+
+}  // namespace password_manager
diff --git a/components/password_manager/core/browser/password_store_interface.h b/components/password_manager/core/browser/password_store_interface.h
new file mode 100644
index 0000000..745da67
--- /dev/null
+++ b/components/password_manager/core/browser/password_store_interface.h
@@ -0,0 +1,159 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_INTERFACE_H_
+#define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_INTERFACE_H_
+
+#include <vector>
+
+#include "components/keyed_service/core/refcounted_keyed_service.h"
+#include "components/password_manager/core/browser/password_form_digest.h"
+#include "components/password_manager/core/browser/password_store_change.h"
+
+namespace password_manager {
+
+struct PasswordForm;
+
+class PasswordStoreConsumer;
+
+// Interface for storing form passwords in a secure way. The usage is
+// independent of the platform.
+// All methods are expected to have an asynchronous implementation that persists
+// changes to a local database or an external service organizing the passwords.
+// The I/O heavy initialization should also be performed asynchronously. If this
+// deferred initialization fails, all subsequent method calls should fail
+// without side effects, return no data, and send no notifications.
+class PasswordStoreInterface : public RefcountedKeyedService {
+ public:
+  // An interface used to notify clients (observers) of this object that data in
+  // the password store has changed. Register the observer via
+  // `PasswordStore::AddObserver`.
+  class Observer {
+   public:
+    // Notifies the observer that password data changed (e.g. added or changed).
+    // Don't rely on `changes` containing REMOVED entries. Certain stores don't
+    // propagate that information as soon as the unified password manager works.
+    // Instead, use `OnLoginsRetained` to validate tracked/shown passwords.
+    virtual void OnLoginsChanged(const PasswordStoreChangeList& changes) = 0;
+
+    // Like OnLoginsChanged(), but also receives the originating
+    // PasswordStoreCore as a parameter. This is useful for observers that
+    // observe changes in both the profile-scoped and the account-scoped store.
+    // The default implementation simply calls OnLoginsChanged(), so observers
+    // that don't care about the store can just ignore this.
+    // TODO(https://crbug.com/1218897): Merge into OnLoginsChanged.
+    virtual void OnLoginsChangedIn(PasswordStoreInterface* store,
+                                   const PasswordStoreChangeList& changes);
+
+    // Notifies the observer that password data changed. Will be called from
+    // the UI thread. The `retained_passwords` are a complete list of passwords
+    // and blocklisted sites.
+    // TODO(https://crbug.com/1218897): Make pure virtual.
+    virtual void OnLoginsRetained(
+        const std::vector<PasswordForm>& retained_passwords);
+
+   protected:
+    virtual ~Observer() = default;
+  };
+
+  // Returns true iff initialization was successful.
+  virtual bool IsAbleToSavePasswords() const = 0;
+
+  // Adds the given PasswordForm to the secure password store asynchronously.
+  virtual void AddLogin(const PasswordForm& form) = 0;
+
+  // Updates the matching PasswordForm in the secure password store (async).
+  // If any of the primary key fields (signon_realm, url, username_element,
+  // username_value, password_element) are updated, then the second version of
+  // the method must be used that takes `old_primary_key`, i.e., the old values
+  // for the primary key fields (the rest of the fields are ignored).
+  virtual void UpdateLogin(const PasswordForm& form) = 0;
+  virtual void UpdateLoginWithPrimaryKey(
+      const PasswordForm& new_form,
+      const PasswordForm& old_primary_key) = 0;
+
+  // Removes the matching PasswordForm from the secure password store (async).
+  virtual void RemoveLogin(const PasswordForm& form) = 0;
+
+  // Remove all logins whose origins match the given filter and that were
+  // created in the given date range. `completion` will be run after deletions
+  // have been completed and notifications have been sent out.
+  // If the platform supports sync, `sync_completion` will be run once the
+  // deletions have also been propagated to the server (or, in rare cases, if
+  // the user permanently disables Sync or deletions haven't been propagated
+  // after 30 seconds). This is only relevant for Sync users and for account
+  // store users - for other users, `sync_completion` will be run immediately
+  // after `completion`.
+  virtual void RemoveLoginsByURLAndTime(
+      const base::RepeatingCallback<bool(const GURL&)>& url_filter,
+      base::Time delete_begin,
+      base::Time delete_end,
+      base::OnceClosure completion,
+      base::OnceCallback<void(bool)> sync_completion =
+          base::NullCallback()) = 0;
+
+  // Removes all logins created in the given date range. If `completion` is not
+  // null, it will be run after deletions have been completed and notification
+  // have been sent out.
+  virtual void RemoveLoginsCreatedBetween(base::Time delete_begin,
+                                          base::Time delete_end,
+                                          base::OnceClosure completion) = 0;
+
+  // Sets the 'skip_zero_click' flag for all credentials that match
+  // `origin_filter`. `completion` will be run after these modifications are
+  // completed and notifications are sent out.
+  virtual void DisableAutoSignInForOrigins(
+      const base::RepeatingCallback<bool(const GURL&)>& origin_filter,
+      base::OnceClosure completion) = 0;
+
+  // Unblocklists the login with `form_digest` by deleting all the corresponding
+  // blocklisted entries. If `completion` is not null, it will be posted to the
+  // `main_task_runner_` after deletions have been completed. Should be called
+  // on the UI thread.
+  virtual void Unblocklist(const PasswordFormDigest& form_digest,
+                           base::OnceClosure completion) = 0;
+
+  // Searches for a matching PasswordForm, and notifies `consumer` on
+  // completion.
+  // TODO(crbug.com/1217070): Use a smart pointer for consumer.
+  virtual void GetLogins(const PasswordFormDigest& form,
+                         PasswordStoreConsumer* consumer) = 0;
+
+  // Searches for credentials with the specified `plain_text_password`, and
+  // notifies `consumer` on completion. The request will be cancelled if the
+  // consumer is destroyed.
+  // TODO(crbug.com/1217070): Use a smart pointer for consumer.
+  virtual void GetLoginsByPassword(const std::u16string& plain_text_password,
+                                   PasswordStoreConsumer* consumer) = 0;
+
+  // Gets the complete list of non-blocklist PasswordForms.`consumer` will be
+  // notified on completion.
+  // TODO(crbug.com/1217070): Use a smart pointer for consumer.
+  virtual void GetAutofillableLogins(PasswordStoreConsumer* consumer) = 0;
+
+  // Gets the complete list of PasswordForms (regardless of their blocklist
+  // status) and notify `consumer` on completion.
+  // TODO(crbug.com/1217070): Use a smart pointer for consumer.
+  virtual void GetAllLogins(PasswordStoreConsumer* consumer) = 0;
+
+  // Gets the complete list of PasswordForms, regardless of their blocklist
+  // status. Also fills in affiliation and branding information for Android
+  // credentials.
+  // TODO(crbug.com/1217070): Use a smart pointer for consumer.
+  virtual void GetAllLoginsWithAffiliationAndBrandingInformation(
+      PasswordStoreConsumer* consumer) = 0;
+
+  // Adds an observer to be notified when the password store data changes.
+  virtual void AddObserver(Observer* observer) = 0;
+
+  // Removes `observer` from the observer list.
+  virtual void RemoveObserver(Observer* observer) = 0;
+
+ protected:
+  ~PasswordStoreInterface() override = default;
+};
+
+}  // namespace password_manager
+
+#endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_INTERFACE_H_
diff --git a/components/password_manager/core/browser/ui/saved_passwords_presenter.cc b/components/password_manager/core/browser/ui/saved_passwords_presenter.cc
index 1a45808d..2126b441 100644
--- a/components/password_manager/core/browser/ui/saved_passwords_presenter.cc
+++ b/components/password_manager/core/browser/ui/saved_passwords_presenter.cc
@@ -228,7 +228,7 @@
 }
 
 void SavedPasswordsPresenter::OnLoginsChangedIn(
-    PasswordStore* store,
+    PasswordStoreInterface* store,
     const PasswordStoreChangeList& changes) {
   store->GetAllLoginsWithAffiliationAndBrandingInformation(this);
 }
diff --git a/components/password_manager/core/browser/ui/saved_passwords_presenter.h b/components/password_manager/core/browser/ui/saved_passwords_presenter.h
index b0261b4..b7bc8b7 100644
--- a/components/password_manager/core/browser/ui/saved_passwords_presenter.h
+++ b/components/password_manager/core/browser/ui/saved_passwords_presenter.h
@@ -116,7 +116,7 @@
   using DuplicatePasswordsMap = std::multimap<std::string, PasswordForm>;
   // PasswordStore::Observer
   void OnLoginsChanged(const PasswordStoreChangeList& changes) override;
-  void OnLoginsChangedIn(PasswordStore* store,
+  void OnLoginsChangedIn(PasswordStoreInterface* store,
                          const PasswordStoreChangeList& changes) override;
 
   // PasswordStoreConsumer:
diff --git a/components/payments/content/secure_payment_confirmation_app.cc b/components/payments/content/secure_payment_confirmation_app.cc
index f3390ba..6fb886a 100644
--- a/components/payments/content/secure_payment_confirmation_app.cc
+++ b/components/payments/content/secure_payment_confirmation_app.cc
@@ -66,8 +66,15 @@
   merchant_data.SetKey("total", std::move(total));
 
   base::Value transaction_data(base::Value::Type::DICTIONARY);
-  transaction_data.SetKey("networkData",
-                          base::Value(base::Base64Encode(network_data)));
+  // `challenge` is a renaming of `networkData` used if the
+  // SecurePaymentConfirmationAPIV2 flag is enabled.
+  if (base::FeatureList::IsEnabled(features::kSecurePaymentConfirmationAPIV2)) {
+    transaction_data.SetKey("challenge",
+                            base::Value(base::Base64Encode(network_data)));
+  } else {
+    transaction_data.SetKey("networkData",
+                            base::Value(base::Base64Encode(network_data)));
+  }
   transaction_data.SetKey("merchantData", std::move(merchant_data));
 
   bool success = base::JSONWriter::Write(transaction_data, challenge);
@@ -153,7 +160,7 @@
 
   // Create a new challenge that is a hash of the transaction data.
   options->challenge = GetSecurePaymentConfirmationChallenge(
-      request_->network_data, merchant_origin_,
+      request_->challenge, merchant_origin_,
       spec_->GetTotal(/*selected_app=*/this)->amount, &challenge_);
 
   // We are nullifying the security check by design, and the origin that created
diff --git a/components/payments/content/secure_payment_confirmation_app_unittest.cc b/components/payments/content/secure_payment_confirmation_app_unittest.cc
index 7587770..7f7ec02f 100644
--- a/components/payments/content/secure_payment_confirmation_app_unittest.cc
+++ b/components/payments/content/secure_payment_confirmation_app_unittest.cc
@@ -99,8 +99,8 @@
 
   mojom::SecurePaymentConfirmationRequestPtr MakeRequest() {
     auto request = mojom::SecurePaymentConfirmationRequest::New();
-    request->network_data = std::vector<uint8_t>(network_data_bytes_.begin(),
-                                                 network_data_bytes_.end());
+    request->challenge = std::vector<uint8_t>(network_data_bytes_.begin(),
+                                              network_data_bytes_.end());
     return request;
   }
 
diff --git a/components/pdf/renderer/pdf_ax_action_target.cc b/components/pdf/renderer/pdf_ax_action_target.cc
index 5973495..22b34071c 100644
--- a/components/pdf/renderer/pdf_ax_action_target.cc
+++ b/components/pdf/renderer/pdf_ax_action_target.cc
@@ -5,8 +5,10 @@
 #include "components/pdf/renderer/pdf_ax_action_target.h"
 
 #include "components/pdf/renderer/pdf_accessibility_tree.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "ui/accessibility/ax_action_data.h"
 #include "ui/accessibility/ax_enums.mojom.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 
 namespace pdf {
 
@@ -139,11 +141,8 @@
     return false;
   }
   pdf_action_data.action = PP_PdfAccessibilityAction::PP_PDF_SET_SELECTION;
-  pdf_action_data.target_rect = {
-      {target_plugin_node_.data().relative_bounds.bounds.x(),
-       target_plugin_node_.data().relative_bounds.bounds.y()},
-      {target_plugin_node_.data().relative_bounds.bounds.width(),
-       target_plugin_node_.data().relative_bounds.bounds.height()}};
+  pdf_action_data.target_rect = content::PP_FromGfxRect(
+      gfx::ToEnclosingRect(target_plugin_node_.data().relative_bounds.bounds));
   pdf_accessibility_tree_source_->HandleAction(pdf_action_data);
   return true;
 }
@@ -168,11 +167,8 @@
       ConvertAXScrollToPdfScrollAlignment(horizontal_scroll_alignment);
   pdf_action_data.vertical_scroll_alignment =
       ConvertAXScrollToPdfScrollAlignment(vertical_scroll_alignment);
-  pdf_action_data.target_rect = {
-      {target_plugin_node_.data().relative_bounds.bounds.x(),
-       target_plugin_node_.data().relative_bounds.bounds.y()},
-      {target_plugin_node_.data().relative_bounds.bounds.width(),
-       target_plugin_node_.data().relative_bounds.bounds.height()}};
+  pdf_action_data.target_rect = content::PP_FromGfxRect(
+      gfx::ToEnclosingRect(target_plugin_node_.data().relative_bounds.bounds));
   pdf_accessibility_tree_source_->HandleAction(pdf_action_data);
   return true;
 }
@@ -182,11 +178,8 @@
   pdf_action_data.action =
       PP_PdfAccessibilityAction::PP_PDF_SCROLL_TO_GLOBAL_POINT;
   pdf_action_data.target_point = {point.x(), point.y()};
-  pdf_action_data.target_rect = {
-      {target_plugin_node_.data().relative_bounds.bounds.x(),
-       target_plugin_node_.data().relative_bounds.bounds.y()},
-      {target_plugin_node_.data().relative_bounds.bounds.width(),
-       target_plugin_node_.data().relative_bounds.bounds.height()}};
+  pdf_action_data.target_rect = content::PP_FromGfxRect(
+      gfx::ToEnclosingRect(target_plugin_node_.data().relative_bounds.bounds));
   pdf_accessibility_tree_source_->HandleAction(pdf_action_data);
   return true;
 }
diff --git a/components/permissions/BUILD.gn b/components/permissions/BUILD.gn
index 4724a5c..c59016a 100644
--- a/components/permissions/BUILD.gn
+++ b/components/permissions/BUILD.gn
@@ -23,6 +23,8 @@
     "contexts/accessibility_permission_context.h",
     "contexts/bluetooth_chooser_context.cc",
     "contexts/bluetooth_chooser_context.h",
+    "contexts/camera_pan_tilt_zoom_permission_context.cc",
+    "contexts/camera_pan_tilt_zoom_permission_context.h",
     "contexts/clipboard_read_write_permission_context.cc",
     "contexts/clipboard_read_write_permission_context.h",
     "contexts/clipboard_sanitized_write_permission_context.cc",
@@ -102,6 +104,7 @@
     "//components/url_formatter",
     "//components/variations",
     "//components/vector_icons",
+    "//components/webrtc:media_stream_device_enumerator",
     "//content/public/browser",
     "//device/bluetooth",
     "//device/bluetooth/public/cpp",
@@ -190,6 +193,7 @@
 source_set("unit_tests") {
   testonly = true
   sources = [
+    "contexts/camera_pan_tilt_zoom_permission_context_unittest.cc",
     "contexts/geolocation_permission_context_unittest.cc",
     "contexts/midi_permission_context_unittest.cc",
     "contexts/midi_sysex_permission_context_unittest.cc",
@@ -218,6 +222,7 @@
     "//components/ukm:test_support",
     "//components/ukm/content",
     "//components/variations",
+    "//components/webrtc",
     "//content/test:test_support",
     "//sql",
     "//sql:test_support",
diff --git a/components/permissions/contexts/DEPS b/components/permissions/contexts/DEPS
index 74dd14d9..a451b09 100644
--- a/components/permissions/contexts/DEPS
+++ b/components/permissions/contexts/DEPS
@@ -2,6 +2,7 @@
   "+components/content_settings/browser",
   "+components/location",
   "+components/prefs",
+  "+components/webrtc",
   "+device/bluetooth",
   "+mojo/public",
   "+services/device/public",
diff --git a/chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.cc b/components/permissions/contexts/camera_pan_tilt_zoom_permission_context.cc
similarity index 97%
rename from chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.cc
rename to components/permissions/contexts/camera_pan_tilt_zoom_permission_context.cc
index fe5db806..0b397b2 100644
--- a/chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.cc
+++ b/components/permissions/contexts/camera_pan_tilt_zoom_permission_context.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h"
+#include "components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h"
 
 #include "components/permissions/permission_manager.h"
 #include "components/permissions/permission_request_id.h"
@@ -13,6 +13,8 @@
 #include "content/public/browser/web_contents.h"
 #include "third_party/blink/public/mojom/permissions_policy/permissions_policy_feature.mojom-shared.h"
 
+namespace permissions {
+
 CameraPanTiltZoomPermissionContext::CameraPanTiltZoomPermissionContext(
     content::BrowserContext* browser_context,
     const webrtc::MediaStreamDeviceEnumerator* device_enumerator)
@@ -155,3 +157,5 @@
   }
   return false;
 }
+
+}  // namespace permissions
diff --git a/chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h b/components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h
similarity index 88%
rename from chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h
rename to components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h
index dfc412a..1ce2400 100644
--- a/chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h
+++ b/components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_MEDIA_WEBRTC_CAMERA_PAN_TILT_ZOOM_PERMISSION_CONTEXT_H_
-#define CHROME_BROWSER_MEDIA_WEBRTC_CAMERA_PAN_TILT_ZOOM_PERMISSION_CONTEXT_H_
+#ifndef COMPONENTS_PERMISSIONS_CONTEXTS_CAMERA_PAN_TILT_ZOOM_PERMISSION_CONTEXT_H_
+#define COMPONENTS_PERMISSIONS_CONTEXTS_CAMERA_PAN_TILT_ZOOM_PERMISSION_CONTEXT_H_
 
 #include "base/macros.h"
 #include "build/build_config.h"
@@ -14,6 +14,8 @@
 class MediaStreamDeviceEnumerator;
 }  // namespace webrtc
 
+namespace permissions {
+
 // Manage user permissions that only control camera movement (pan, tilt, and
 // zoom). Those permissions are automatically reset when the "regular" camera
 // permission is blocked or reset.
@@ -66,4 +68,6 @@
   const webrtc::MediaStreamDeviceEnumerator* const device_enumerator_;
 };
 
-#endif  // CHROME_BROWSER_MEDIA_WEBRTC_CAMERA_PAN_TILT_ZOOM_PERMISSION_CONTEXT_H_
+}  // namespace permissions
+
+#endif  // COMPONENTS_PERMISSIONS_CONTEXTS_CAMERA_PAN_TILT_ZOOM_PERMISSION_CONTEXT_H_
diff --git a/chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context_unittest.cc b/components/permissions/contexts/camera_pan_tilt_zoom_permission_context_unittest.cc
similarity index 94%
rename from chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context_unittest.cc
rename to components/permissions/contexts/camera_pan_tilt_zoom_permission_context_unittest.cc
index 8d9c964..6b4aaa3 100644
--- a/chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context_unittest.cc
+++ b/components/permissions/contexts/camera_pan_tilt_zoom_permission_context_unittest.cc
@@ -2,14 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/media/webrtc/camera_pan_tilt_zoom_permission_context.h"
+#include "components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h"
 
-#include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "components/permissions/permissions_client.h"
+#include "components/permissions/test/test_permissions_client.h"
 #include "components/webrtc/media_stream_device_enumerator_impl.h"
+#include "content/public/test/test_renderer_host.h"
 
 namespace {
 
@@ -19,8 +20,6 @@
   const ContentSetting result;  // expected resulting content setting
 };
 
-}  // namespace
-
 // Waits until a change is observed for a specific content setting type.
 class ContentSettingsChangeWaiter : public content_settings::Observer {
  public:
@@ -31,6 +30,11 @@
         ->GetSettingsMap(browser_context_)
         ->AddObserver(this);
   }
+
+  ContentSettingsChangeWaiter(const ContentSettingsChangeWaiter&) = delete;
+  ContentSettingsChangeWaiter& operator=(const ContentSettingsChangeWaiter&) =
+      delete;
+
   ~ContentSettingsChangeWaiter() override {
     permissions::PermissionsClient::Get()
         ->GetSettingsMap(browser_context_)
@@ -52,12 +56,14 @@
   content::BrowserContext* browser_context_;
   ContentSettingsType content_type_;
   base::RunLoop run_loop_;
-
-  DISALLOW_COPY_AND_ASSIGN(ContentSettingsChangeWaiter);
 };
 
+}  // namespace
+
+namespace permissions {
+
 class CameraPanTiltZoomPermissionContextTests
-    : public ChromeRenderViewHostTestHarness,
+    : public content::RenderViewHostTestHarness,
       public testing::WithParamInterface<TestConfig> {
  public:
   CameraPanTiltZoomPermissionContextTests() = default;
@@ -86,9 +92,8 @@
   }
 
  private:
+  TestPermissionsClient client_;
   webrtc::MediaStreamDeviceEnumeratorImpl device_enumerator_;
-
-  DISALLOW_COPY_AND_ASSIGN(CameraPanTiltZoomPermissionContextTests);
 };
 
 class CameraContentSettingTests
@@ -203,3 +208,5 @@
         // Default camera permission is ask if camera PTZ is ask.
         TestConfig{CONTENT_SETTING_DEFAULT, CONTENT_SETTING_ASK,
                    CONTENT_SETTING_ASK}));
+
+}  // namespace permissions
diff --git a/components/policy/core/browser/webui/policy_status_provider.cc b/components/policy/core/browser/webui/policy_status_provider.cc
index 5ab9b7cd..2d8fba7 100644
--- a/components/policy/core/browser/webui/policy_status_provider.cc
+++ b/components/policy/core/browser/webui/policy_status_provider.cc
@@ -88,8 +88,14 @@
   base::TimeDelta refresh_interval = base::TimeDelta::FromMilliseconds(
       refresh_scheduler ? refresh_scheduler->GetActualRefreshDelay()
                         : CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs);
+
+  // In case state_keys aren't available, we have no scheduler. See also
+  // DeviceCloudPolicyInitializer::TryToCreateClient and b/181140445
   base::Time last_refresh_time =
-      refresh_scheduler ? refresh_scheduler->last_refresh() : base::Time();
+      refresh_scheduler ? refresh_scheduler->last_refresh()
+                        : policy && policy->has_timestamp()
+                              ? base::Time::FromJavaTime(policy->timestamp())
+                              : base::Time();
 
   bool no_error = store->status() == CloudPolicyStore::STATUS_OK && client &&
                   client->status() == DM_STATUS_SUCCESS;
diff --git a/components/policy/core/common/policy_map.cc b/components/policy/core/common/policy_map.cc
index f32d4f51..715a6ee 100644
--- a/components/policy/core/common/policy_map.cc
+++ b/components/policy/core/common/policy_map.cc
@@ -328,6 +328,10 @@
   map_.erase(policy);
 }
 
+PolicyMap::iterator PolicyMap::EraseIt(const_iterator it) {
+  return map_.erase(it);
+}
+
 void PolicyMap::EraseMatching(
     const base::RepeatingCallback<bool(const const_iterator)>& filter) {
   FilterErase(filter, true);
diff --git a/components/policy/core/common/policy_map.h b/components/policy/core/common/policy_map.h
index bd59a73..b32372f 100644
--- a/components/policy/core/common/policy_map.h
+++ b/components/policy/core/common/policy_map.h
@@ -233,6 +233,10 @@
   // Erase the given |policy|, if it exists in this map.
   void Erase(const std::string& policy);
 
+  // Erase the given iterator |it|. Returns the iterator following |it| (which
+  // could be `map_.end()`).
+  iterator EraseIt(const_iterator it);
+
   // Erase all entries for which |filter| returns true.
   void EraseMatching(
       const base::RepeatingCallback<bool(const const_iterator)>& filter);
diff --git a/components/policy/core/common/schema_map.cc b/components/policy/core/common/schema_map.cc
index c8cd4629..0b410969 100644
--- a/components/policy/core/common/schema_map.cc
+++ b/components/policy/core/common/schema_map.cc
@@ -64,28 +64,31 @@
 
     for (auto it_map = policy_map.begin(); it_map != policy_map.end();) {
       const std::string& policy_name = it_map->first;
-      base::Value* policy_value = it_map->second.value();
-      Schema policy_schema = schema->GetProperty(policy_name);
-      ++it_map;
+      PolicyMap::Entry& entry = it_map->second;
+      const Schema policy_schema = schema->GetProperty(policy_name);
+      // TODO (https://crbug.com/1219503) remove this dummy string
+      std::string error;
 
-      if (!policy_value) {
-        if (drop_invalid_component_policies)
-          policy_map.Erase(policy_name);
-        else
-          policy_map.GetMutable(policy_name)->SetIgnored();
+      const bool has_value = entry.value();
+      const bool is_valid =
+          has_value &&
+          policy_schema.Normalize(entry.value(), SCHEMA_ALLOW_UNKNOWN,
+                                  /* error_path= */ nullptr, &error,
+                                  /* changed = */ nullptr);
+      if (drop_invalid_component_policies && (!has_value || !is_valid)) {
+        it_map = policy_map.EraseIt(it_map);
         continue;
       }
 
-      std::string error_path;
-      std::string error;
-      if (!policy_schema.Normalize(policy_value, SCHEMA_ALLOW_UNKNOWN,
-                                   &error_path, &error, nullptr)) {
-        if (drop_invalid_component_policies) {
-          policy_map.Erase(policy_name);
-        } else {
-          policy_map.GetMutable(policy_name)->SetInvalid();
-        }
+      ++it_map;
+
+      if (!has_value) {
+        entry.SetIgnored();
+        continue;
       }
+
+      if (!is_valid)
+        entry.SetInvalid();
     }
   }
 }
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index bf8e273..58f9c7ea 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -25151,9 +25151,7 @@
       'owners': ['asumaneev@google.com'],
       'type': 'main',
       'schema': { 'type': 'boolean' },
-      # TODO(crbug.com/1179280): remove chrome.linux support once
-      # https://crbug.com/1169547 is finished.
-      'supported_on': ['chrome.linux:91-', 'chrome_os:91-'],
+      'supported_on': ['chrome.linux:91-92', 'chrome_os:91-'],
       'features': {
         'dynamic_refresh': True,
         'per_profile': False,
diff --git a/components/power_scheduler/power_mode_arbiter.cc b/components/power_scheduler/power_mode_arbiter.cc
index 360d555..3f13b71 100644
--- a/components/power_scheduler/power_mode_arbiter.cc
+++ b/components/power_scheduler/power_mode_arbiter.cc
@@ -140,6 +140,8 @@
 void PowerModeArbiter::OnTaskRunnerAvailable(
     scoped_refptr<base::SequencedTaskRunner> task_runner,
     int sequence_number) {
+  UpdateTraceObserver();
+
   // Check if there are any actionable resets and post another task to handle
   // future ones if necessary. If sequence_number is changed concurrently by
   // RemoveObserver() or ResetVoteAfterTimeout(), this has call has no effect,
@@ -363,6 +365,32 @@
   charging_voter_->SetOnBatteryPowerForTesting(on_battery_power);  // IN-TEST
 }
 
+void PowerModeArbiter::UpdateTraceObserver() {
+  {
+    base::AutoLock lock(lock_);
+
+    // Can't add the observer yet if the task runner isn't available.
+    if (!task_runner_)
+      return;
+  }
+
+  // Lock while adding or removing the observer, because OnTaskRunnerAvailable()
+  // may run concurrently to OnTraceLogEnabled/Disabled(). We need a different
+  // lock than |lock_| since that one is acquired by Add/RemoveObserver().
+  base::AutoLock lock(trace_observer_lock_);
+  bool power_tracing_enabled =
+      *TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED("power");
+  if (power_tracing_enabled && !trace_observer_added_) {
+    trace_observer_added_ = true;
+    // Add a no-op observer which ensures that reset tasks are executing while
+    // tracing is enabled.
+    AddObserver(trace_observer_.get());
+  } else if (!power_tracing_enabled && trace_observer_added_) {
+    trace_observer_added_ = false;
+    RemoveObserver(trace_observer_.get());
+  }
+}
+
 void PowerModeArbiter::OnTraceLogEnabled() {
   {
     base::AutoLock lock(lock_);
@@ -371,17 +399,11 @@
     active_mode_.OnTraceLogEnabled();
   }
 
-  const auto* power_tracing_enabled =
-      TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED("power");
-  if (*power_tracing_enabled) {
-    // Add a no-op observer which ensures that reset tasks are executing while
-    // tracing is enabled.
-    AddObserver(trace_observer_.get());
-  }
+  UpdateTraceObserver();
 }
 
 void PowerModeArbiter::OnTraceLogDisabled() {
-  RemoveObserver(trace_observer_.get());
+  UpdateTraceObserver();
 }
 
 }  // namespace power_scheduler
diff --git a/components/power_scheduler/power_mode_arbiter.h b/components/power_scheduler/power_mode_arbiter.h
index 7f5f5597..c905af20 100644
--- a/components/power_scheduler/power_mode_arbiter.h
+++ b/components/power_scheduler/power_mode_arbiter.h
@@ -98,11 +98,17 @@
 
   PowerMode ComputeActiveModeLocked() EXCLUSIVE_LOCKS_REQUIRED(lock_);
 
+  void UpdateTraceObserver() LOCKS_EXCLUDED(lock_, trace_observer_lock_);
+
   // trace_event::TraceLog::EnabledStateObserver implementation:
   void OnTraceLogEnabled() override;
   void OnTraceLogDisabled() override;
 
-  std::unique_ptr<Observer> trace_observer_;
+  // Protects trace_observer_{,added_}. Should only be acquired when |lock_| is
+  // not held.
+  base::Lock trace_observer_lock_;
+  std::unique_ptr<Observer> trace_observer_ GUARDED_BY(trace_observer_lock_);
+  bool trace_observer_added_ GUARDED_BY(trace_observer_lock_) = false;
 
   base::Lock lock_;  // Protects subsequent members.
   scoped_refptr<base::SequencedTaskRunner> task_runner_ GUARDED_BY(lock_);
diff --git a/components/safe_browsing/content/password_protection/password_protection_request_content.cc b/components/safe_browsing/content/password_protection/password_protection_request_content.cc
index f873b33..4ba4271 100644
--- a/components/safe_browsing/content/password_protection/password_protection_request_content.cc
+++ b/components/safe_browsing/content/password_protection/password_protection_request_content.cc
@@ -91,6 +91,7 @@
     PasswordProtectionServiceBase* pps,
     int request_timeout_in_ms)
     : PasswordProtectionRequest(content::GetUIThreadTaskRunner({}),
+                                content::GetIOThreadTaskRunner({}),
                                 main_frame_url,
                                 password_form_action,
                                 password_form_frame_url,
diff --git a/components/safe_browsing/core/password_protection/password_protection_request.cc b/components/safe_browsing/core/password_protection/password_protection_request.cc
index 293954e..eb6112f 100644
--- a/components/safe_browsing/core/password_protection/password_protection_request.cc
+++ b/components/safe_browsing/core/password_protection/password_protection_request.cc
@@ -60,7 +60,8 @@
 }  // namespace
 
 PasswordProtectionRequest::PasswordProtectionRequest(
-    scoped_refptr<base::SequencedTaskRunner> task_runner_to_delete_on,
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
+    scoped_refptr<base::SequencedTaskRunner> io_task_runner,
     const GURL& main_frame_url,
     const GURL& password_form_action,
     const GURL& password_form_frame_url,
@@ -74,8 +75,9 @@
     PasswordProtectionServiceBase* pps,
     int request_timeout_in_ms)
     : base::RefCountedDeleteOnSequence<PasswordProtectionRequest>(
-          std::move(task_runner_to_delete_on)),
+          std::move(ui_task_runner)),
       request_proto_(std::make_unique<LoginReputationClientRequest>()),
+      io_task_runner_(std::move(io_task_runner)),
       main_frame_url_(main_frame_url),
       password_form_action_(password_form_action),
       password_form_frame_url_(password_form_frame_url),
@@ -89,7 +91,7 @@
       password_protection_service_(pps),
       request_timeout_in_ms_(request_timeout_in_ms),
       is_modal_warning_showing_(false) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(this->ui_task_runner()->RunsTasksInCurrentSequence());
 
   DCHECK(trigger_type_ == LoginReputationClientRequest::UNFAMILIAR_LOGIN_PAGE ||
          trigger_type_ == LoginReputationClientRequest::PASSWORD_REUSE_EVENT);
@@ -104,12 +106,12 @@
 PasswordProtectionRequest::~PasswordProtectionRequest() = default;
 
 void PasswordProtectionRequest::Start() {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   CheckAllowlist();
 }
 
 void PasswordProtectionRequest::CheckAllowlist() {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
 
   // In order to send pings for about:blank, we skip the allowlist check for
   // URLs with unsupported schemes.
@@ -122,9 +124,10 @@
   // Start a task on the IO thread to check the allowlist. It may
   // callback immediately on the IO thread or take some time if a full-hash-
   // check is required.
-  auto result_callback = base::BindOnce(&OnAllowlistCheckDoneOnIO, AsWeakPtr());
+  auto result_callback =
+      base::BindOnce(&OnAllowlistCheckDoneOnIO, ui_task_runner(), AsWeakPtr());
   tracker_.PostTask(
-      GetTaskRunner(ThreadID::IO).get(), FROM_HERE,
+      io_task_runner_.get(), FROM_HERE,
       base::BindOnce(&AllowlistCheckerClient::StartCheckCsdAllowlist,
                      password_protection_service_->database_manager(),
                      main_frame_url_, std::move(result_callback)));
@@ -132,18 +135,18 @@
 
 // static
 void PasswordProtectionRequest::OnAllowlistCheckDoneOnIO(
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
     base::WeakPtr<PasswordProtectionRequest> weak_request,
     bool match_allowlist) {
   // Don't access weak_request on IO thread. Move it back to UI thread first.
-  GetTaskRunner(ThreadID::UI)
-      ->PostTask(
-          FROM_HERE,
-          base::BindOnce(&PasswordProtectionRequest::OnAllowlistCheckDone,
-                         weak_request, match_allowlist));
+  ui_task_runner->PostTask(
+      FROM_HERE,
+      base::BindOnce(&PasswordProtectionRequest::OnAllowlistCheckDone,
+                     weak_request, match_allowlist));
 }
 
 void PasswordProtectionRequest::OnAllowlistCheckDone(bool match_allowlist) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   if (match_allowlist) {
     if (password_protection_service_->CanSendSamplePing()) {
       FillRequestProto(/*is_sampled_ping=*/true);
@@ -159,7 +162,7 @@
 }
 
 void PasswordProtectionRequest::CheckCachedVerdicts() {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   if (!password_protection_service_) {
     Finish(RequestOutcome::SERVICE_DESTROYED, nullptr);
     return;
@@ -314,7 +317,7 @@
 #endif  // BUILDFLAG(SAFE_BROWSING_AVAILABLE)
 
 void PasswordProtectionRequest::SendRequest() {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   if (password_protection_service_->CanGetAccessToken() &&
       password_protection_service_->token_fetcher()) {
     password_protection_service_->token_fetcher()->Start(
@@ -328,7 +331,7 @@
 
 void PasswordProtectionRequest::SendRequestWithToken(
     const std::string& access_token) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
 
   MaybeAddPingToWebUI(access_token);
 
@@ -392,22 +395,21 @@
 }
 
 void PasswordProtectionRequest::StartTimeout() {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
 
   // If request is not done withing 10 seconds, we cancel this request.
   // The weak pointer used for the timeout will be invalidated (and
   // hence would prevent the timeout) if the check completes on time and
   // execution reaches Finish().
-  GetTaskRunner(ThreadID::UI)
-      ->PostDelayedTask(
-          FROM_HERE,
-          base::BindOnce(&PasswordProtectionRequest::Cancel, AsWeakPtr(), true),
-          base::TimeDelta::FromMilliseconds(request_timeout_in_ms_));
+  ui_task_runner()->PostDelayedTask(
+      FROM_HERE,
+      base::BindOnce(&PasswordProtectionRequest::Cancel, AsWeakPtr(), true),
+      base::TimeDelta::FromMilliseconds(request_timeout_in_ms_));
 }
 
 void PasswordProtectionRequest::OnURLLoaderComplete(
     std::unique_ptr<std::string> response_body) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   int response_code = 0;
   if (url_loader_->ResponseInfo() && url_loader_->ResponseInfo()->headers)
     response_code = url_loader_->ResponseInfo()->headers->response_code();
@@ -439,7 +441,7 @@
 void PasswordProtectionRequest::Finish(
     RequestOutcome outcome,
     std::unique_ptr<LoginReputationClientResponse> response) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   tracker_.TryCancelAll();
 
   // If the request is canceled, the PasswordProtectionServiceBase is already
@@ -469,7 +471,7 @@
 }
 
 void PasswordProtectionRequest::Cancel(bool timed_out) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK(ui_task_runner()->RunsTasksInCurrentSequence());
   url_loader_.reset();
   Finish(timed_out ? RequestOutcome::TIMEDOUT : RequestOutcome::CANCELED,
          nullptr);
diff --git a/components/safe_browsing/core/password_protection/password_protection_request.h b/components/safe_browsing/core/password_protection/password_protection_request.h
index fb906224..c824a3c 100644
--- a/components/safe_browsing/core/password_protection/password_protection_request.h
+++ b/components/safe_browsing/core/password_protection/password_protection_request.h
@@ -110,7 +110,8 @@
   friend class base::RefCountedThreadSafe<PasswordProtectionRequest>;
 
   PasswordProtectionRequest(
-      scoped_refptr<base::SequencedTaskRunner> task_runner_to_delete_on,
+      scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
+      scoped_refptr<base::SequencedTaskRunner> io_task_runner,
       const GURL& main_frame_url,
       const GURL& password_form_action,
       const GURL& password_form_frame_url,
@@ -162,6 +163,7 @@
   void CheckAllowlist();
 
   static void OnAllowlistCheckDoneOnIO(
+      scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
       base::WeakPtr<PasswordProtectionRequest> weak_request,
       bool match_allowlist);
 
@@ -202,6 +204,16 @@
   void Finish(RequestOutcome outcome,
               std::unique_ptr<LoginReputationClientResponse> response);
 
+  // PasswordProtectionRequest passes its |ui_task_runner| construction
+  // parameter to its RefCountedDeleteOnSequence base class, which exposes its
+  // passed-in task runner as owning_task_runner(). Expose that |ui_task_runner|
+  // parameter internally as ui_task_runner() for clarity.
+  scoped_refptr<base::SequencedTaskRunner> ui_task_runner() {
+    return owning_task_runner();
+  }
+
+  scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
+
   // Main frame URL of the login form.
   const GURL main_frame_url_;
 
diff --git a/components/safe_browsing/core/password_protection/password_protection_service_base.cc b/components/safe_browsing/core/password_protection/password_protection_service_base.cc
index 891639b..69277d8 100644
--- a/components/safe_browsing/core/password_protection/password_protection_service_base.cc
+++ b/components/safe_browsing/core/password_protection/password_protection_service_base.cc
@@ -15,10 +15,10 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "components/password_manager/core/browser/password_manager_metrics_util.h"
 #include "components/password_manager/core/browser/password_reuse_detector.h"
 #include "components/safe_browsing/core/browser/sync/sync_utils.h"
-#include "components/safe_browsing/core/common/thread_utils.h"
 #include "components/safe_browsing/core/common/utils.h"
 #include "components/safe_browsing/core/db/database_manager.h"
 #include "components/safe_browsing/core/features.h"
@@ -58,7 +58,6 @@
       is_off_the_record_(is_off_the_record),
       identity_manager_(identity_manager),
       try_token_fetch_(try_token_fetch) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
   if (history_service)
     history_service_observation_.Observe(history_service);
 
@@ -127,7 +126,7 @@
     PasswordProtectionRequest* request,
     RequestOutcome outcome,
     std::unique_ptr<LoginReputationClientResponse> response) {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
   DCHECK(request);
 
   if (response) {
@@ -206,7 +205,7 @@
 }
 
 void PasswordProtectionServiceBase::CancelPendingRequests() {
-  DCHECK(CurrentlyOnThread(ThreadID::UI));
+  DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
   for (auto it = pending_requests_.begin(); it != pending_requests_.end();) {
     PasswordProtectionRequest* request = it->get();
     // These are the requests for whom we're still waiting for verdicts.
@@ -244,13 +243,12 @@
 void PasswordProtectionServiceBase::OnURLsDeleted(
     history::HistoryService* history_service,
     const history::DeletionInfo& deletion_info) {
-  GetTaskRunner(ThreadID::UI)
-      ->PostTask(
-          FROM_HERE,
-          base::BindRepeating(&PasswordProtectionServiceBase::
-                                  RemoveUnhandledSyncPasswordReuseOnURLsDeleted,
-                              GetWeakPtr(), deletion_info.IsAllHistory(),
-                              deletion_info.deleted_rows()));
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE,
+      base::BindRepeating(&PasswordProtectionServiceBase::
+                              RemoveUnhandledSyncPasswordReuseOnURLsDeleted,
+                          GetWeakPtr(), deletion_info.IsAllHistory(),
+                          deletion_info.deleted_rows()));
 }
 
 void PasswordProtectionServiceBase::HistoryServiceBeingDeleted(
diff --git a/components/safe_browsing/core/password_protection/password_protection_service_base.h b/components/safe_browsing/core/password_protection/password_protection_service_base.h
index 54d2e6eb..e7ffacbe 100644
--- a/components/safe_browsing/core/password_protection/password_protection_service_base.h
+++ b/components/safe_browsing/core/password_protection/password_protection_service_base.h
@@ -14,6 +14,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observation.h"
 #include "base/task/cancelable_task_tracker.h"
+#include "base/threading/thread_checker.h"
 #include "build/build_config.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/history/core/browser/history_service_observer.h"
@@ -422,6 +423,8 @@
   virtual gfx::Size GetCurrentContentAreaSize() const = 0;
 #endif
 
+  THREAD_CHECKER(thread_checker_);
+
   std::vector<std::string> saved_passwords_matching_domains_;
 
   scoped_refptr<SafeBrowsingDatabaseManager> database_manager_;
diff --git a/components/safe_browsing/ios/password_protection/password_protection_request_ios.mm b/components/safe_browsing/ios/password_protection/password_protection_request_ios.mm
index 6a881f5..424216d 100644
--- a/components/safe_browsing/ios/password_protection/password_protection_request_ios.mm
+++ b/components/safe_browsing/ios/password_protection/password_protection_request_ios.mm
@@ -40,6 +40,7 @@
     int request_timeout_in_ms)
     : PasswordProtectionRequest(
           base::CreateSingleThreadTaskRunner({web::WebThread::UI}),
+          base::CreateSingleThreadTaskRunner({web::WebThread::IO}),
           main_frame_url,
           /*password_form_action=*/GURL(),
           /*password_frame_url=*/GURL(),
diff --git a/components/services/paint_preview_compositor/BUILD.gn b/components/services/paint_preview_compositor/BUILD.gn
index a8b161f..087805e 100644
--- a/components/services/paint_preview_compositor/BUILD.gn
+++ b/components/services/paint_preview_compositor/BUILD.gn
@@ -58,6 +58,7 @@
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
+    "//ui/gfx:geometry_skia",
   ]
 }
 
diff --git a/components/services/paint_preview_compositor/DEPS b/components/services/paint_preview_compositor/DEPS
index 3585cec..1160760 100644
--- a/components/services/paint_preview_compositor/DEPS
+++ b/components/services/paint_preview_compositor/DEPS
@@ -7,5 +7,5 @@
   "+mojo/public/cpp",
   "+skia/ext",
   "+third_party/skia/include",
-  "+ui/gfx/geometry",
+  "+ui/gfx",
 ]
diff --git a/components/services/paint_preview_compositor/paint_preview_compositor_impl_unittest.cc b/components/services/paint_preview_compositor/paint_preview_compositor_impl_unittest.cc
index b0c25b2..14e9c74ba 100644
--- a/components/services/paint_preview_compositor/paint_preview_compositor_impl_unittest.cc
+++ b/components/services/paint_preview_compositor/paint_preview_compositor_impl_unittest.cc
@@ -36,6 +36,9 @@
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkStream.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/rect_conversions.h"
+#include "ui/gfx/geometry/rect_f.h"
+#include "ui/gfx/skia_util.h"
 
 namespace paint_preview {
 
@@ -64,7 +67,7 @@
               frame.second->scroll_extents);
     size_t size = response->frames[frame.first]->subframes.size();
     EXPECT_EQ(size, frame.second->subframes.size());
-    std::vector<std::pair<base::UnguessableToken, gfx::Rect>>
+    std::vector<std::pair<base::UnguessableToken, gfx::RectF>>
         response_subframes, expected_subframes;
     for (size_t i = 0; i < size; ++i) {
       response_subframes.push_back(
@@ -115,10 +118,6 @@
   return SkRect::MakeWH(size.width(), size.height());
 }
 
-SkRect ToSkRect(const gfx::Rect& rect) {
-  return SkRect::MakeXYWH(rect.x(), rect.y(), rect.width(), rect.height());
-}
-
 // Draw a dummy picture of size |scroll_extents|, whose origin is equal to
 // |clip_rect| and clipped by |clip_rect|'s size. The dummy picture will by
 // filled with |rect_fill_color| with a cyan border and will have an XY axis
@@ -127,11 +126,11 @@
 void DrawDummyTestPicture(SkCanvas* canvas,
                           SkColor rect_fill_color,
                           const gfx::Size& scroll_extents,
-                          absl::optional<gfx::Rect> clip_rect = absl::nullopt,
+                          absl::optional<gfx::RectF> clip_rect = absl::nullopt,
                           gfx::Size scroll_offsets = gfx::Size()) {
   canvas->save();
   if (clip_rect.has_value()) {
-    canvas->clipRect(ToSkRect(*clip_rect));
+    canvas->clipRect(gfx::RectFToSkRect(*clip_rect));
     canvas->translate(clip_rect->x(), clip_rect->y());
   }
   canvas->translate(-scroll_offsets.width(), -scroll_offsets.height());
@@ -183,7 +182,7 @@
     bool set_is_main_frame,
     const base::FilePath& path,
     const gfx::Size& scroll_extents,
-    std::vector<std::pair<base::UnguessableToken, gfx::Rect>> subframes,
+    std::vector<std::pair<base::UnguessableToken, gfx::RectF>> subframes,
     base::flat_map<base::UnguessableToken, mojom::FrameDataPtr>* expected_data,
     gfx::Size scroll_offsets = gfx::Size(),
     SkColor picture_fill_color = SK_ColorDKGRAY) {
@@ -208,11 +207,11 @@
 
   for (const auto& subframe : subframes) {
     const base::UnguessableToken& subframe_id = subframe.first;
-    gfx::Rect clip_rect = subframe.second;
+    gfx::RectF clip_rect = subframe.second;
 
     // Record the subframe as custom data to |canvas|.
-    uint32_t content_id =
-        tracker.CreateContentForRemoteFrame(clip_rect, subframe_id);
+    uint32_t content_id = tracker.CreateContentForRemoteFrame(
+        gfx::ToEnclosingRect(clip_rect), subframe_id);
     tracker.CustomDataToSkPictureCallback(canvas, content_id);
 
     auto* content_id_embedding_token_pair =
@@ -311,19 +310,19 @@
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
   const base::UnguessableToken kSubframe_0_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_0_scroll_extent(20, 20);
-  gfx::Rect subframe_0_0_clip_rect(10, 10, 20, 20);
+  gfx::RectF subframe_0_0_clip_rect(10, 10, 20, 20);
   const base::UnguessableToken kSubframe_0_1_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_1_scroll_extent(10, 5);
-  gfx::Rect subframe_0_1_clip_rect(10, 10, 30, 30);
+  gfx::RectF subframe_0_1_clip_rect(10, 10, 30, 30);
   const base::UnguessableToken kSubframe_1_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_1_scroll_extent(1, 1);
-  gfx::Rect subframe_1_clip_rect(0, 0, 1, 1);
+  gfx::RectF subframe_1_clip_rect(0, 0, 1, 1);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url_.spec());
@@ -378,7 +377,7 @@
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url_.spec());
@@ -411,7 +410,7 @@
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url_.spec());
@@ -444,7 +443,7 @@
 TEST_P(PaintPreviewCompositorBeginCompositeTest, SelfReference) {
   const base::UnguessableToken kRootFrameID = base::UnguessableToken::Create();
   gfx::Size root_frame_scroll_extent(100, 200);
-  gfx::Rect root_frame_clip_rect(10, 20, 30, 40);
+  gfx::RectF root_frame_clip_rect(10, 20, 30, 40);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url_.spec());
@@ -538,7 +537,7 @@
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
   gfx::Size subframe_0_scroll_offsets(34, 56);
 
   PaintPreviewProto proto;
@@ -741,7 +740,7 @@
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url.spec());
@@ -798,7 +797,7 @@
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
   gfx::Size subframe_0_scroll_offsets(0, 5);
 
   PaintPreviewProto proto;
@@ -855,11 +854,11 @@
   const base::UnguessableToken kRootFrameID = base::UnguessableToken::Create();
   gfx::Size root_frame_scroll_extent(110, 215);
   gfx::Size root_frame_scroll_offsets(10, 15);
-  gfx::Rect root_frame_clip_rect(10, 15, 100, 200);
+  gfx::RectF root_frame_clip_rect(10, 15, 100, 200);
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url.spec());
@@ -887,8 +886,8 @@
           mojom::PaintPreviewCompositor::BeginCompositeStatus::kSuccess,
           kRootFrameID, std::move(expected_data)));
   float scale_factor = 1;
-  gfx::Rect rect =
-      gfx::ScaleToEnclosingRect(root_frame_clip_rect, scale_factor);
+  gfx::RectF rect = root_frame_clip_rect;
+  rect.Scale(scale_factor);
   SkBitmap bitmap;
   bitmap.allocPixels(SkImageInfo::MakeN32Premul(rect.width(), rect.height()));
   SkCanvas canvas(bitmap, SkSurfaceProps{});
@@ -900,7 +899,7 @@
   DrawDummyTestPicture(&canvas, SK_ColorLTGRAY, subframe_0_scroll_extent,
                        subframe_0_clip_rect);
   compositor.BitmapForMainFrame(
-      rect, scale_factor,
+      gfx::ToEnclosingRect(rect), scale_factor,
       base::BindOnce(&BitmapCallbackImpl,
                      mojom::PaintPreviewCompositor::BitmapStatus::kSuccess,
                      bitmap));
@@ -918,11 +917,11 @@
   const base::UnguessableToken kRootFrameID = base::UnguessableToken::Create();
   gfx::Size root_frame_scroll_extent(110, 215);
   gfx::Size root_frame_scroll_offsets(50, 20);
-  gfx::Rect root_frame_clip_rect(50, 20, 100, 200);
+  gfx::RectF root_frame_clip_rect(50, 20, 100, 200);
   const base::UnguessableToken kSubframe_0_ID =
       base::UnguessableToken::Create();
   gfx::Size subframe_0_scroll_extent(50, 75);
-  gfx::Rect subframe_0_clip_rect(10, 20, 30, 40);
+  gfx::RectF subframe_0_clip_rect(10, 20, 30, 40);
 
   PaintPreviewProto proto;
   proto.mutable_metadata()->set_url(url.spec());
@@ -952,8 +951,8 @@
   float scale_factor = 1;
   root_frame_clip_rect.set_width(110 - 50);
   root_frame_clip_rect.set_height(215 - 20);
-  gfx::Rect rect =
-      gfx::ScaleToEnclosingRect(root_frame_clip_rect, scale_factor);
+  gfx::RectF rect = root_frame_clip_rect;
+  rect.Scale(scale_factor);
   SkBitmap bitmap;
   bitmap.allocPixels(SkImageInfo::MakeN32Premul(rect.width(), rect.height()));
   SkCanvas canvas(bitmap, SkSurfaceProps{});
@@ -965,7 +964,7 @@
   DrawDummyTestPicture(&canvas, SK_ColorLTGRAY, subframe_0_scroll_extent,
                        subframe_0_clip_rect);
   compositor.BitmapForMainFrame(
-      rect, scale_factor,
+      gfx::ToEnclosingRect(rect), scale_factor,
       base::BindOnce(&BitmapCallbackImpl,
                      mojom::PaintPreviewCompositor::BitmapStatus::kSuccess,
                      bitmap));
diff --git a/components/services/paint_preview_compositor/public/mojom/paint_preview_compositor.mojom b/components/services/paint_preview_compositor/public/mojom/paint_preview_compositor.mojom
index 825b955c..90120a0 100644
--- a/components/services/paint_preview_compositor/public/mojom/paint_preview_compositor.mojom
+++ b/components/services/paint_preview_compositor/public/mojom/paint_preview_compositor.mojom
@@ -24,7 +24,7 @@
 // A struct representing the clip rect of a subframe within its parent.
 struct SubframeClipRect {
   mojo_base.mojom.UnguessableToken frame_guid;
-  gfx.mojom.Rect clip_rect;
+  gfx.mojom.RectF clip_rect;
 };
 
 // A struct representing the scroll extents and subframes of a parent frame.
diff --git a/components/strings/components_strings_ar.xtb b/components/strings/components_strings_ar.xtb
index 1e5e78e..1794410 100644
--- a/components/strings/components_strings_ar.xtb
+++ b/components/strings/components_strings_ar.xtb
@@ -311,6 +311,7 @@
 <translation id="2053373601901562871">{NUM_DAYS,plural, =0{‏عندما يكون عنصر التحكم هذا مفعّلاً ونشطًا، يحدّد Chrome "المجموعة النموذجية" التي تضم عددًا كبيرًا من الأشخاص الذين تتشابه أنشطة تصفّحهم مع أنشطة تصفّحك الأخيرة. ويمكن للمعلِنين اختيار الإعلانات التي يريدون عرضها للمجموعة ويتم الحفاظ على خصوصية سجلّ التصفّح على جهازك، مع العِلم أنّ مجموعتك يتم تعديلها كل يوم.}=1{‏عندما يكون عنصر التحكم هذا مفعّلاً ونشطًا، يحدّد Chrome "المجموعة النموذجية" التي تضم عددًا كبيرًا من الأشخاص الذين تتشابه أنشطة تصفّحهم مع أنشطة تصفّحك الأخيرة. ويمكن للمعلِنين اختيار الإعلانات التي يريدون عرضها للمجموعة ويتم الحفاظ على خصوصية سجلّ التصفّح على جهازك، مع العِلم أنّ مجموعتك يتم تعديلها كل يوم.}two{‏عندما يكون عنصر التحكم هذا مفعّلاً ونشطًا، يحدّد Chrome "المجموعة النموذجية" التي تضم عددًا كبيرًا من الأشخاص الذين تتشابه أنشطة تصفّحهم مع أنشطة تصفّحك الأخيرة. ويمكن للمعلِنين اختيار الإعلانات التي يريدون عرضها للمجموعة ويتم الحفاظ على خصوصية سجلّ التصفّح على جهازك، مع العِلم أنّ مجموعتك يتم تعديلها كل يومَين ({NUM_DAYS}).}few{‏عندما يكون عنصر التحكم هذا مفعّلاً ونشطًا، يحدّد Chrome "المجموعة النموذجية" التي تضم عددًا كبيرًا من الأشخاص الذين تتشابه أنشطة تصفّحهم مع أنشطة تصفّحك الأخيرة. ويمكن للمعلِنين اختيار الإعلانات التي يريدون عرضها للمجموعة ويتم الحفاظ على خصوصية سجلّ التصفّح على جهازك، مع العِلم أنّ مجموعتك يتم تعديلها كل {NUM_DAYS} أيام.}many{‏عندما يكون عنصر التحكم هذا مفعّلاً ونشطًا، يحدّد Chrome "المجموعة النموذجية" التي تضم عددًا كبيرًا من الأشخاص الذين تتشابه أنشطة تصفّحهم مع أنشطة تصفّحك الأخيرة. ويمكن للمعلِنين اختيار الإعلانات التي يريدون عرضها للمجموعة ويتم الحفاظ على خصوصية سجلّ التصفّح على جهازك، مع العِلم أنّ مجموعتك يتم تعديلها كل {NUM_DAYS} يومًا.}other{‏عندما يكون عنصر التحكم هذا مفعّلاً ونشطًا، يحدّد Chrome "المجموعة النموذجية" التي تضم عددًا كبيرًا من الأشخاص الذين تتشابه أنشطة تصفّحهم مع أنشطة تصفّحك الأخيرة. ويمكن للمعلِنين اختيار الإعلانات التي يريدون عرضها للمجموعة ويتم الحفاظ على خصوصية سجلّ التصفّح على جهازك، مع العِلم أنّ مجموعتك يتم تعديلها كل {NUM_DAYS} يوم.}}</translation>
 <translation id="2053553514270667976">الرمز البريدي</translation>
 <translation id="2064691555167957331">{COUNT,plural, =1{اقتراح واحد}zero{# اقتراح}two{اقتراحان (#)}few{# اقتراحات}many{# اقتراحًا}other{# اقتراح}}</translation>
+<translation id="2071156619270205202">رقم هذه البطاقة غير مؤهَّل للاستخدام كرقم بطاقة افتراضية.</translation>
 <translation id="2071692954027939183">تم حظر الإشعارات تلقائيًا لأنّك عادةً لا تسمح بظهورها.</translation>
 <translation id="2079545284768500474">تراجع</translation>
 <translation id="20817612488360358">تم ضبط إعدادات الخادم الوكيل ليتم استخدامها وتم أيضًا تحديد إعداد صريح للخادم الوكيل.</translation>
@@ -439,9 +440,11 @@
 <translation id="2521385132275182522">وضع دبوس أسفل اليمين</translation>
 <translation id="2523886232349826891">سيتم حفظ البطاقة على هذا الجهاز فقط</translation>
 <translation id="2524461107774643265">إضافة مزيد من المعلومات</translation>
+<translation id="2529899080962247600">يجب ألا يحتوي هذا الحقل على أكثر من <ph name="MAX_ITEMS_LIMIT" /> إدخال. وسيتم تجاهل جميع الإدخالات الأخرى.</translation>
 <translation id="2535659140340599600">{COUNT,plural, =1{وكلمة مرور واحدة أخرى}zero{و# كلمة مرور أخرى}two{وكلمتا مرور أخريان}few{و# كلمات مرور أخرى}many{و# كلمة مرور أخرى}other{و# كلمة مرور أخرى}}</translation>
 <translation id="2536110899380797252">إضافة عنوان</translation>
 <translation id="2539524384386349900">اكتشاف</translation>
+<translation id="2540701853218677861">سجلّ تسجيل دخول/خروج الجهاز، بما في ذلك الطوابع الزمنية والمحاولات التي تعذّر إتمامها</translation>
 <translation id="2541219929084442027">إنّ الصفحات التي تعرضها في علامات التبويب في وضع التصفُّح المتخفي لن يتم الاحتفاظ بها في سجلّ المتصفِّح أو مخزن ملفات تعريف الارتباط أو سجلّ البحث بعد إغلاق جميع علامات التبويب في وضع التصفُّح المتخفي، ولكن سيتم الاحتفاظ بأي ملفات تنزِّلها أو إشارات مرجعية تنشئها.</translation>
 <translation id="2544644783021658368">مستند واحد</translation>
 <translation id="254947805923345898">قيمة السياسة غير صحيحة.</translation>
@@ -634,6 +637,7 @@
 <translation id="3320021301628644560">إضافة عنوان إرسال الفواتير</translation>
 <translation id="3324983252691184275">قرمزي</translation>
 <translation id="3329013043687509092">تشبع اللون</translation>
+<translation id="3333762389743153920">هذه البطاقة غير مؤهَّلة للاستخدام كبطاقة افتراضية</translation>
 <translation id="3338095232262050444">آمن</translation>
 <translation id="3355823806454867987">تغيير إعدادات الخادم الوكيل...</translation>
 <translation id="3360103848165129075">جدول بيانات معالج الدفع</translation>
@@ -1147,6 +1151,7 @@
 <translation id="5125394840236832993">B-Plus</translation>
 <translation id="5126510351761255129">التحقق من بطاقتك</translation>
 <translation id="5135404736266831032">إدارة العناوين...</translation>
+<translation id="5138014172396933048">البطاقة الافتراضية غير متوفّرة حاليًا. يُرجى التواصل مع المصرف.</translation>
 <translation id="5138227688689900538">عرض أقل</translation>
 <translation id="514010763713772514">إتمام الدفع بشكل أسرع في المرة المقبلة</translation>
 <translation id="5145883236150621069">يوجد رمز خطأ في استجابة السياسة</translation>
@@ -1193,6 +1198,7 @@
 <translation id="5287240709317226393">عرض ملفات تعريف الارتباط</translation>
 <translation id="5287456746628258573">يستخدم هذا الموقع الإلكتروني ضبط الأمان القديم الذي قد يكشف عن معلوماتك (مثل كلمات المرور أو أرقام بطاقة الائتمان) عند إرسالها إلى هذا الموقع الإلكتروني.</translation>
 <translation id="5288108484102287882">لقد أدى التحقُّق من قيم السياسة إلى ظهور تحذيرات.</translation>
+<translation id="5288808348893593856">‏الاتصال بهذا الموقع الإلكتروني آمن، ما لم يخبرك Chrome بغير ذلك.</translation>
 <translation id="5289384342738547352">معالجة المستندات المتعددة</translation>
 <translation id="5299298092464848405">خطأ في تحليل السياسة</translation>
 <translation id="5300589172476337783">عرض</translation>
@@ -1554,9 +1560,11 @@
 <translation id="6685834062052613830">الخروج وإكمال الإعداد</translation>
 <translation id="6687335167692595844">حجم الخط المطلوب</translation>
 <translation id="6688743156324860098">تعديل…</translation>
+<translation id="6688775486821967877">البطاقة الافتراضية غير متوفّرة حاليًا. يُرجى إعادة المحاولة لاحقًا.</translation>
 <translation id="6689249931105087298">طباعة نسبية باستخدام ميزة "تعويض النقاط السوداء"</translation>
 <translation id="6689271823431384964">‏يتيح لك Chrome حفظ بطاقاتك في حسابك على Google لأنك سجَّلت الدخول. يمكنك تغيير هذا السلوك في الإعدادات. ويتم الحصول على اسم حامل البطاقة من حسابك.</translation>
 <translation id="6698381487523150993">تاريخ الإنشاء:</translation>
+<translation id="6699188552522342100">هل المعلومات الواردة في هذا الموقع الإلكتروني دقيقة؟</translation>
 <translation id="6702919718839027939">وضع العرض التقديمي</translation>
 <translation id="6710213216561001401">السابق</translation>
 <translation id="6710594484020273272">&lt;إدخال عبارة البحث&gt;</translation>
@@ -2061,6 +2069,7 @@
           <ph name="LIST_ITEM" />ملفات تعريف الارتباط وبيانات الموقع الإلكتروني
         <ph name="END_LIST" /></translation>
 <translation id="8574899947864779331">‏استخدام ميزة Touch ID للتأكد من البطاقات بشكلٍ أسرع</translation>
+<translation id="8577348305244205642">البطاقة الافتراضية غير متوفّرة</translation>
 <translation id="858637041960032120">إضافة رقم هاتف
 </translation>
 <translation id="8589998999637048520">أفضل جودة</translation>
diff --git a/components/strings/components_strings_en-GB.xtb b/components/strings/components_strings_en-GB.xtb
index 1b0e267d..ab733b1 100644
--- a/components/strings/components_strings_en-GB.xtb
+++ b/components/strings/components_strings_en-GB.xtb
@@ -611,6 +611,7 @@
 <translation id="3212623355668894776">Close all guest windows so that your browsing activity is deleted from this device.</translation>
 <translation id="3215092763954878852">Couldn't use WebAuthn</translation>
 <translation id="3218181027817787318">Relative</translation>
+<translation id="3223287115535306850">App launching throbber</translation>
 <translation id="3225919329040284222">The server presented a certificate that doesn't match built-in expectations. These expectations are included for certain, high-security websites in order to protect you.</translation>
 <translation id="3226128629678568754">Press the reload button to resubmit the data needed to load the page.</translation>
 <translation id="3226387218769101247">Thumbnails</translation>
@@ -685,6 +686,7 @@
 <translation id="3447884698081792621">Show certificate (issued by <ph name="ISSUER" />)</translation>
 <translation id="3452404311384756672">Fetch interval:</translation>
 <translation id="3453962258458347894">Number of retries</translation>
+<translation id="3454555520521576458">Resizable</translation>
 <translation id="3456231139987291353">Number-11 (Envelope)</translation>
 <translation id="3461266716147554923"><ph name="URL" /> wants to see text and images copied to the clipboard</translation>
 <translation id="3461824795358126837">Highlighter</translation>
@@ -1019,6 +1021,7 @@
 <translation id="4677585247300749148"><ph name="URL" /> wants to respond to accessibility events</translation>
 <translation id="467809019005607715">Google Slides</translation>
 <translation id="4680804919228900307">You just entered your password on a deceptive site. Chromium recommends checking your saved passwords for <ph name="WEBSITE_1" />, <ph name="WEBSITE_2" />, <ph name="WEBSITE_3" /> and other sites where you use this password now.</translation>
+<translation id="468314109939257734">View your virtual card number</translation>
 <translation id="4690462567478992370">Stop using an invalid certificate</translation>
 <translation id="4691835149146451662">Architecture-A (Envelope)</translation>
 <translation id="4701488924964507374"><ph name="SENTENCE1" /> <ph name="SENTENCE2" /></translation>
@@ -1927,6 +1930,7 @@
 <translation id="8057711352706143257">'<ph name="SOFTWARE_NAME" />' isn’t configured correctly. Uninstalling '<ph name="SOFTWARE_NAME" />' usually fixes the problem. <ph name="FURTHER_EXPLANATION" /></translation>
 <translation id="8066955247577885446">Sorry, something went wrong.</translation>
 <translation id="8067872629359326442">You just entered your password on a deceptive site. Chromium can help. To change your password and notify Google that your account may be at risk, click 'Protect account'.</translation>
+<translation id="8070439594494267500">App icon</translation>
 <translation id="8074253406171541171">10x13 (Envelope)</translation>
 <translation id="8075898834294118863">Manage site settings</translation>
 <translation id="8078141288243656252">Cannot annotate when rotated</translation>
diff --git a/components/strings/components_strings_sq.xtb b/components/strings/components_strings_sq.xtb
index 05a32cb8..415a61d7 100644
--- a/components/strings/components_strings_sq.xtb
+++ b/components/strings/components_strings_sq.xtb
@@ -310,6 +310,7 @@
 <translation id="2053373601901562871">{NUM_DAYS,plural, =0{Kur ky kontroll është aktiv dhe statusi është aktiv, Chrome përcakton se me cilin grup të madh personash (kohortë) është më i ngjashëm aktiviteti yt i shfletimit së fundi. Reklamuesit mund të zgjedhin reklamat për grupin dhe aktiviteti yt i shfletimit mbahet privat në pajisjen tënde. Grupi yt përditësohet çdo ditë.}=1{Kur ky kontroll është aktiv dhe statusi është aktiv, Chrome përcakton se me cilin grup të madh personash (kohortë) është më i ngjashëm aktiviteti yt i shfletimit së fundi. Reklamuesit mund të zgjedhin reklamat për grupin dhe aktiviteti yt i shfletimit mbahet privat në pajisjen tënde. Grupi yt përditësohet çdo ditë.}other{Kur ky kontroll është aktiv dhe statusi është aktiv, Chrome përcakton se me cilin grup të madh personash (kohortë) është më i ngjashëm aktiviteti yt i shfletimit së fundi. Reklamuesit mund të zgjedhin reklamat për grupin dhe aktiviteti yt i shfletimit mbahet privat në pajisjen tënde. Grupi yt përditësohet çdo {NUM_DAYS} ditë.}}</translation>
 <translation id="2053553514270667976">Kodi postar</translation>
 <translation id="2064691555167957331">{COUNT,plural, =1{1 sugjerim}other{# sugjerime}}</translation>
+<translation id="2071156619270205202">Kjo kartë nuk është e përshtatshme për numrin e kartës virtuale.</translation>
 <translation id="2071692954027939183">Njoftimet bllokohen automatikisht sepse ti zakonisht nuk i lejon ato</translation>
 <translation id="2079545284768500474">Zhbëj</translation>
 <translation id="20817612488360358">Cilësimet e përfaqësuesit të sistemit janë caktuar që të përdoren, por është specifikuar po ashtu një konfigurim i qartë i përfaqësuesit.</translation>
@@ -438,9 +439,11 @@
 <translation id="2521385132275182522">Kapje me tel poshtë djathtas</translation>
 <translation id="2523886232349826891">Ruajtur vetëm në këtë pajisje</translation>
 <translation id="2524461107774643265">Shto më shumë informacion</translation>
+<translation id="2529899080962247600">Kjo fushë nuk duhet të ketë më shumë se <ph name="MAX_ITEMS_LIMIT" /> regjistrime. Të gjitha hyrjet e mëtejshme do të shpërfillen.</translation>
 <translation id="2535659140340599600">{COUNT,plural, =1{dhe 1 tjetër}other{dhe # të tjera}}</translation>
 <translation id="2536110899380797252">Shto adresë</translation>
 <translation id="2539524384386349900">Zbulo</translation>
+<translation id="2540701853218677861">Historik i identifikimit/daljes së pajisjeve, duke përfshirë vulat kohore dhe përpjekjet e dështuara</translation>
 <translation id="2541219929084442027">Faqet që shikon në skedat "e fshehta" nuk do të ruhen në historikun e shfletuesit tënd, vendin e ruajtjes të kukive apo historikun e kërkimeve pasi ke mbyllur të gjitha skedat e tua "të fshehta". Çdo skedar që shkarkon apo faqeshënues që krijon do të mbahet.</translation>
 <translation id="2544644783021658368">Një dokument i vetëm</translation>
 <translation id="254947805923345898">Vlera e politikës nuk është e vlefshme.</translation>
@@ -631,6 +634,7 @@
 <translation id="3320021301628644560">Shto adresën e faturimit</translation>
 <translation id="3324983252691184275">E kuqe e fortë</translation>
 <translation id="3329013043687509092">Ngopje</translation>
+<translation id="3333762389743153920">Nuk është e përshtatshme për kartë virtuale</translation>
 <translation id="3338095232262050444">E sigurt</translation>
 <translation id="3355823806454867987">Ndrysho cilësimet e përfaqësuesit...</translation>
 <translation id="3360103848165129075">Fleta e përpunuesit të pagesës</translation>
@@ -764,6 +768,7 @@
 <translation id="3754210790023674521">Dil nga "Figura brenda figurës"</translation>
 <translation id="3759461132968374835">Nuk ke ndërprerje aksidentale të raportuara së fundi. Ndërprerjet aksidentale që kanë ndodhur kur raportimi i tyre ka qenë i çaktivizuar, nuk do të shfaqen këtu.</translation>
 <translation id="3760561303380396507">Të përdoret Windows Hello në vend të CVC?</translation>
+<translation id="3761171036307311438">Emri në kartë:</translation>
 <translation id="3761718714832595332">Fshihe statusin</translation>
 <translation id="3765032636089507299">Faqja e "Shfletimit të sigurt" është duke u ndërtuar.</translation>
 <translation id="3765588406864124894">Kutia postare 9</translation>
@@ -1141,6 +1146,7 @@
 <translation id="5125394840236832993">B-Plus</translation>
 <translation id="5126510351761255129">Verifiko kartën tënde</translation>
 <translation id="5135404736266831032">Menaxho adresat...</translation>
+<translation id="5138014172396933048">Karta virtuale nuk ofrohet për momentin, kontakto me bankën tënde</translation>
 <translation id="5138227688689900538">Shfaq më pak</translation>
 <translation id="514010763713772514">Përfundoje blerjen më shpejt herën tjetër</translation>
 <translation id="5145883236150621069">Një kod gabimi i pranishëm në përgjigjen e politikës</translation>
@@ -1187,6 +1193,7 @@
 <translation id="5287240709317226393">Shfaq kukit</translation>
 <translation id="5287456746628258573">Ky sajt përdor një konfigurim të vjetruar të sigurisë, i cili mund t'i ekspozojë informacionet e tua (p.sh. fjalëkalimin ose numrat e kartës së kreditit) kur dërgohen te ky sajt.</translation>
 <translation id="5288108484102287882">Vërtetimi i vlerave të politikës ka ngritur shqetësime</translation>
+<translation id="5288808348893593856">Lidhja e faqes është e sigurt përveç nëse Chrome të thotë ndryshe.</translation>
 <translation id="5289384342738547352">Menaxhimi i shumë dokumenteve</translation>
 <translation id="5299298092464848405">Gabim gjatë analizimit të politikës</translation>
 <translation id="5300589172476337783">Shfaq</translation>
@@ -1547,9 +1554,11 @@
 <translation id="6685834062052613830">Dil dhe përfundo konfigurimin</translation>
 <translation id="6687335167692595844">Kërkohet madhësia e fontit</translation>
 <translation id="6688743156324860098">Përditëso…</translation>
+<translation id="6688775486821967877">Karta virtuale nuk ofrohet për momentin, provo përsëri më vonë</translation>
 <translation id="6689249931105087298">Relative me ngjeshjen e pikës së zezë</translation>
 <translation id="6689271823431384964">Chrome po ofron që të ruash kartat e tua në "Llogarinë tënde të Google" sepse je identifikuar. Mund ta ndryshosh këtë sjellje te cilësimet. Emri i mbajtësit të kartës vjen nga llogaria jote.</translation>
 <translation id="6698381487523150993">Krijuar:</translation>
+<translation id="6699188552522342100">A është e saktë kjo faqe interneti?</translation>
 <translation id="6702919718839027939">Prezantim</translation>
 <translation id="6710213216561001401">Prapa</translation>
 <translation id="6710594484020273272">&lt;Shkruaj termin e kërkimit&gt;</translation>
@@ -2054,6 +2063,7 @@
           <ph name="LIST_ITEM" />Kukit dhe të dhënat e sajteve
         <ph name="END_LIST" /></translation>
 <translation id="8574899947864779331">Përdor Touch ID për të konfirmuar kartat më shpejt</translation>
+<translation id="8577348305244205642">Karta virtuale nuk ofrohet</translation>
 <translation id="858637041960032120">Shto numrin e telefonit</translation>
 <translation id="8589998999637048520">Cilësia më e mirë</translation>
 <translation id="8600271352425265729">Vetëm këtë herë</translation>
diff --git a/components/strings/components_strings_uz.xtb b/components/strings/components_strings_uz.xtb
index f2378d3..e0def45 100644
--- a/components/strings/components_strings_uz.xtb
+++ b/components/strings/components_strings_uz.xtb
@@ -609,6 +609,7 @@
 <translation id="3212623355668894776">Barcha mehmon oynalarni yopsangiz, bu qurilmadan brauzerdagi faoliyat oʻchiriladi.</translation>
 <translation id="3215092763954878852">WebAuthn ishlatib boʻlmadi</translation>
 <translation id="3218181027817787318">Aloqador</translation>
+<translation id="3223287115535306850">Ilova yuklanishi belgisi</translation>
 <translation id="3225919329040284222">Serverdagi sertifikat ba’zi saytlardagi yuqori darajali havfsizlik ichki parametrlariga mos kelmaydi.</translation>
 <translation id="3226128629678568754">Ba’zi ma’lumotlarni qayta kiritish uchun sahifa yuklanishi kerak, “yangilash” tugmasini bosing.</translation>
 <translation id="3226387218769101247">Eskizlar</translation>
@@ -683,6 +684,7 @@
 <translation id="3447884698081792621">Sertifikatni ko‘rsatish (noshir: <ph name="ISSUER" />)</translation>
 <translation id="3452404311384756672">Yuklash oralig‘i:</translation>
 <translation id="3453962258458347894">Qayta urinishlar soni</translation>
+<translation id="3454555520521576458">Hajmi oʻzgaruvchan</translation>
 <translation id="3456231139987291353">Number-11 (Envelope)</translation>
 <translation id="3461266716147554923"><ph name="URL" /> klipbordga nusxalangan matn va rasmlarni ko‘rmoqchi</translation>
 <translation id="3461824795358126837">Marker</translation>
@@ -1015,6 +1017,7 @@
 <translation id="4677585247300749148"><ph name="URL" /> maxsus imkoniyatlardan foydalanmoqchi</translation>
 <translation id="467809019005607715">Google Slides</translation>
 <translation id="4680804919228900307">Hozirgina shubhali saytda parol kiritdingiz. Chromium hoziroq <ph name="WEBSITE_1" />, <ph name="WEBSITE_2" />, <ph name="WEBSITE_3" /> va boshqa saytlardagi shu parolingizni tekshirishni tavsiya qiladi.</translation>
+<translation id="468314109939257734">Virtual karta raqamini koʻrish</translation>
 <translation id="4690462567478992370">Yaroqsiz sertifikatdan foydalanishni to‘xtatish</translation>
 <translation id="4691835149146451662">Architecture-A (Envelope)</translation>
 <translation id="4701488924964507374"><ph name="SENTENCE1" /> <ph name="SENTENCE2" /></translation>
@@ -1922,6 +1925,7 @@
 <translation id="8057711352706143257">“<ph name="SOFTWARE_NAME" />” noto‘g‘ri sozlangan. “<ph name="SOFTWARE_NAME" />” dasturini o‘chirib ko‘ring. <ph name="FURTHER_EXPLANATION" /></translation>
 <translation id="8066955247577885446">Xatolik yuz berdi.</translation>
 <translation id="8067872629359326442">Hozirgina shubhali saytda parol kiritdingiz. Chromium yordamga tayyor. Parolni almashtirish va Googlega bu hisob xavf ostida ekanini xabar qilish uchun Hisobni himoyalash ustiga bosing.</translation>
+<translation id="8070439594494267500">Ilova belgisi</translation>
 <translation id="8074253406171541171">10x13 (Envelope)</translation>
 <translation id="8075898834294118863">Sayt sozlamalarini boshqarish</translation>
 <translation id="8078141288243656252">Aylantirilganda izohlanmaydi</translation>
diff --git a/components/sync/nigori/nigori.cc b/components/sync/nigori/nigori.cc
index 1d7fece..32b0b81 100644
--- a/components/sync/nigori/nigori.cc
+++ b/components/sync/nigori/nigori.cc
@@ -99,14 +99,15 @@
   // "dummy") as PBKDF2_HMAC_SHA1(Ns("dummy") + Ns("localhost"), "saltsalt",
   // 1001, 128), where Ns(S) is the NigoriStream representation of S (32-bit
   // big-endian length of S followed by S itself).
-  const char kRawConstantSalt[] = {0xc7, 0xca, 0xfb, 0x23, 0xec, 0x2a,
-                                   0x9d, 0x4c, 0x03, 0x5a, 0x90, 0xae,
-                                   0xed, 0x8b, 0xa4, 0x98};
+  const uint8_t kRawConstantSalt[] = {0xc7, 0xca, 0xfb, 0x23, 0xec, 0x2a,
+                                      0x9d, 0x4c, 0x03, 0x5a, 0x90, 0xae,
+                                      0xed, 0x8b, 0xa4, 0x98};
   const size_t kUserIterations = 1002;
   const size_t kEncryptionIterations = 1003;
   const size_t kSigningIterations = 1004;
 
-  std::string salt(kRawConstantSalt, sizeof(kRawConstantSalt));
+  std::string salt(reinterpret_cast<const char*>(kRawConstantSalt),
+                   sizeof(kRawConstantSalt));
 
   // Kuser = PBKDF2(P, Suser, Nuser, 16)
   user_key = SymmetricKey::DeriveKeyFromPasswordUsingPbkdf2(
diff --git a/components/sync/protocol/bookmark_model_metadata.proto b/components/sync/protocol/bookmark_model_metadata.proto
index 6b52c8ea..a1c150e 100644
--- a/components/sync/protocol/bookmark_model_metadata.proto
+++ b/components/sync/protocol/bookmark_model_metadata.proto
@@ -47,11 +47,5 @@
   // otherwise).
   optional int64 last_sync_time = 4;
 
-  // Represents whether bookmark commits sent to the server (most importantly
-  // creations) populate client tags. This is a layer on top of the usual
-  // FeatureList to avoid risky transitions during startup, to guard against
-  // in-flight commits.
-  // TODO(crbug.com/1032052): remove this code when the logic is enabled by
-  // default and enforced to true upon startup.
-  optional bool bookmark_client_tags_in_protocol_enabled = 5;
+  reserved 5;
 }
diff --git a/components/sync_bookmarks/bookmark_remote_updates_handler.cc b/components/sync_bookmarks/bookmark_remote_updates_handler.cc
index 46d147d..6c0ed28 100644
--- a/components/sync_bookmarks/bookmark_remote_updates_handler.cc
+++ b/components/sync_bookmarks/bookmark_remote_updates_handler.cc
@@ -162,7 +162,7 @@
   UpdateBookmarkNodeFromSpecifics(update_entity.specifics.bookmark(), node,
                                   model, favicon_service);
   // Compute index information before updating the |tracker|.
-  const size_t old_index = size_t{old_parent->GetIndexOf(node)};
+  const size_t old_index = static_cast<size_t>(old_parent->GetIndexOf(node));
   const size_t new_index =
       ComputeChildNodeIndex(new_parent, update_entity.unique_position, tracker);
   tracker->Update(tracked_entity, update.response_version,
diff --git a/components/sync_bookmarks/synced_bookmark_tracker.cc b/components/sync_bookmarks/synced_bookmark_tracker.cc
index 9f6f053d..03fd1d3a 100644
--- a/components/sync_bookmarks/synced_bookmark_tracker.cc
+++ b/components/sync_bookmarks/synced_bookmark_tracker.cc
@@ -144,13 +144,9 @@
 std::unique_ptr<SyncedBookmarkTracker> SyncedBookmarkTracker::CreateEmpty(
     sync_pb::ModelTypeState model_type_state) {
   // base::WrapUnique() used because the constructor is private.
-  auto tracker = base::WrapUnique(new SyncedBookmarkTracker(
+  return base::WrapUnique(new SyncedBookmarkTracker(
       std::move(model_type_state), /*bookmarks_full_title_reuploaded=*/false,
       /*last_sync_time=*/base::Time::Now()));
-  tracker->bookmark_client_tags_in_protocol_enabled_ =
-      base::FeatureList::IsEnabled(
-          switches::kSyncUseClientTagForBookmarkCommits);
-  return tracker;
 }
 
 // static
@@ -180,27 +176,6 @@
       model_metadata.model_type_state(), bookmarks_full_title_reuploaded,
       last_sync_time));
 
-  // Read |bookmark_client_tags_in_protocol_enabled_| while honoring the
-  // corresponding feature toggle too.
-  if (model_metadata.bookmark_client_tags_in_protocol_enabled()) {
-    // If the feature used to be enabled, it can continue to do so as long as
-    // the feature toggle is still enabled. If it becomes disabled, the boolean
-    // transitions to false immediately (independently of in-flight local
-    // changes) to guarantee that there is an effective kill switch.
-    tracker->bookmark_client_tags_in_protocol_enabled_ =
-        base::FeatureList::IsEnabled(
-            switches::kSyncUseClientTagForBookmarkCommits);
-  } else {
-    // If the feature used to be disabled, transitioning to true requires *NOT*
-    // having pending local changes (in-flight creations, strictly speaking, but
-    // that's too complex to implement), to avoid creating duplicates on the
-    // server (the same bookmark with and without a client tag).
-    tracker->bookmark_client_tags_in_protocol_enabled_ =
-        !tracker->HasLocalChanges() &&
-        base::FeatureList::IsEnabled(
-            switches::kSyncUseClientTagForBookmarkCommits);
-  }
-
   const CorruptionReason corruption_reason =
       tracker->InitEntitiesFromModelAndMetadata(model,
                                                 std::move(model_metadata));
@@ -392,8 +367,6 @@
   model_metadata.set_bookmarks_full_title_reuploaded(
       bookmarks_full_title_reuploaded_);
   model_metadata.set_last_sync_time(syncer::TimeToProtoTime(last_sync_time_));
-  model_metadata.set_bookmark_client_tags_in_protocol_enabled(
-      bookmark_client_tags_in_protocol_enabled_);
 
   for (const std::pair<const std::string, std::unique_ptr<Entity>>& pair :
        sync_id_to_entities_map_) {
@@ -698,7 +671,8 @@
 }
 
 bool SyncedBookmarkTracker::bookmark_client_tags_in_protocol_enabled() const {
-  return bookmark_client_tags_in_protocol_enabled_;
+  return base::FeatureList::IsEnabled(
+      switches::kSyncUseClientTagForBookmarkCommits);
 }
 
 void SyncedBookmarkTracker::TraverseAndAppend(
diff --git a/components/sync_bookmarks/synced_bookmark_tracker.h b/components/sync_bookmarks/synced_bookmark_tracker.h
index 9fed5324..bd07df2 100644
--- a/components/sync_bookmarks/synced_bookmark_tracker.h
+++ b/components/sync_bookmarks/synced_bookmark_tracker.h
@@ -367,12 +367,6 @@
   // required to populate the client tag (and be considered invalid otherwise).
   base::Time last_sync_time_;
 
-  // Represents whether bookmark commits sent to the server (most importantly
-  // creations) populate client tags.
-  // TODO(crbug.com/1032052): remove this code when the logic is enabled by
-  // default and enforced to true upon startup.
-  bool bookmark_client_tags_in_protocol_enabled_ = false;
-
   DISALLOW_COPY_AND_ASSIGN(SyncedBookmarkTracker);
 };
 
diff --git a/components/viz/common/gl_scaler.cc b/components/viz/common/gl_scaler.cc
index c7551bc9..0404a5d 100644
--- a/components/viz/common/gl_scaler.cc
+++ b/components/viz/common/gl_scaler.cc
@@ -1406,8 +1406,8 @@
 gfx::RectF GLScaler::ScalerStage::ToSourceRect(
     const gfx::Rect& output_rect) const {
   return gfx::ScaleRect(gfx::RectF(output_rect),
-                        float{scale_from_.x()} / scale_to_.x(),
-                        float{scale_from_.y()} / scale_to_.y());
+                        static_cast<float>(scale_from_.x()) / scale_to_.x(),
+                        static_cast<float>(scale_from_.y()) / scale_to_.y());
 }
 
 gfx::Rect GLScaler::ScalerStage::ToInputRect(gfx::RectF source_rect) const {
diff --git a/components/viz/service/display/resolved_frame_data.cc b/components/viz/service/display/resolved_frame_data.cc
index d0943d2..52aba4b8 100644
--- a/components/viz/service/display/resolved_frame_data.cc
+++ b/components/viz/service/display/resolved_frame_data.cc
@@ -6,6 +6,9 @@
 
 #include <utility>
 
+#include "base/containers/contains.h"
+#include "base/logging.h"
+#include "components/viz/common/quads/compositor_render_pass_draw_quad.h"
 #include "components/viz/service/surfaces/surface.h"
 
 namespace viz {
@@ -25,25 +28,81 @@
 
 ResolvedFrameData::~ResolvedFrameData() = default;
 
-void ResolvedFrameData::UpdateResolvedPassData(
-    std::vector<ResolvedPassData> resolved_passes) {
-  DCHECK(!resolved_passes.empty());
+ResourceIdSet ResolvedFrameData::UpdateForActiveFrame(
+    const std::unordered_map<ResourceId, ResourceId, ResourceIdHasher>&
+        child_to_parent_map) {
+  auto& compositor_frame = surface_->GetActiveOrInterpolatedFrame();
+  auto& resource_list = compositor_frame.resource_list;
+  auto& render_passes = compositor_frame.render_pass_list;
+
+  // Figure out which resources are actually used in the render pass.
+  // Note that we first gather them in a vector, since ResourceIdSet (which we
+  // actually need) is a flat_set, which means bulk insertion we do at the end
+  // is more efficient.
+  std::vector<ResourceId> referenced_resources;
+  referenced_resources.reserve(resource_list.size());
+
+  // Will be repopulated based on active frame.
+  render_pass_id_map_.clear();
+  resolved_passes_.clear();
+  render_pass_id_map_.reserve(render_passes.size());
+  resolved_passes_.resize(render_passes.size());
+
+  // Reset and compute new render pass / quad data for this frame. This stores
+  // remapped display resource ids.
+  for (size_t i = 0; i < render_passes.size(); ++i) {
+    auto& render_pass = render_passes[i];
+    auto& resolved_pass = resolved_passes_[i];
+
+    resolved_pass.render_pass = render_pass.get();
+
+    // Loop through the quads, remapping resource ids and storing them.
+    auto& draw_quads = resolved_passes_[i].draw_quads;
+    draw_quads.reserve(render_pass->quad_list.size());
+    for (auto* quad : render_pass->quad_list) {
+      if (quad->material == DrawQuad::Material::kCompositorRenderPass) {
+        // Check CompositorRenderPassDrawQuad refers to a render pass
+        // that exists and is drawn before the current render pass.
+        auto quad_render_pass_id =
+            CompositorRenderPassDrawQuad::MaterialCast(quad)->render_pass_id;
+        if (!base::Contains(render_pass_id_map_, quad_render_pass_id)) {
+          DLOG(ERROR) << "CompositorRenderPassDrawQuad with invalid id";
+          SetInvalid();
+          return {};
+        }
+      }
+
+      draw_quads.emplace_back(*quad);
+      for (ResourceId& resource_id : draw_quads.back().remapped_resources) {
+        // If we're using a resource which was not declared in the
+        // |resource_list| then this is an invalid frame, we can abort.
+        auto iter = child_to_parent_map.find(resource_id);
+        if (iter == child_to_parent_map.end()) {
+          DLOG(ERROR) << "Invalid resource for " << surface_id();
+          SetInvalid();
+          return {};
+        }
+
+        referenced_resources.push_back(resource_id);
+        resource_id = iter->second;
+      }
+    }
+
+    // Build render pass id map and check for duplicate ids at the same time.
+    if (!render_pass_id_map_
+             .insert(std::make_pair(render_pass->id, &resolved_pass))
+             .second) {
+      DLOG(ERROR) << "Duplicate render pass ids";
+      SetInvalid();
+      return {};
+    }
+  }
 
   frame_index_ = surface_->GetActiveFrameIndex();
   DCHECK_NE(frame_index_, 0u);
 
-  resolved_passes_ = std::move(resolved_passes);
-
-  // Build a map from render pass id to data.
-  std::vector<std::pair<CompositorRenderPassId, ResolvedPassData*>> entries;
-  entries.reserve(resolved_passes_.size());
-  for (auto& resolved_pass : resolved_passes_)
-    entries.emplace_back(resolved_pass.render_pass->id, &resolved_pass);
-  render_pass_id_map_ =
-      base::flat_map<CompositorRenderPassId, ResolvedPassData*>(
-          std::move(entries));
-
   valid_ = true;
+  return ResourceIdSet(std::move(referenced_resources));
 }
 
 void ResolvedFrameData::SetInvalid() {
diff --git a/components/viz/service/display/resolved_frame_data.h b/components/viz/service/display/resolved_frame_data.h
index 3353115..dcdd37c 100644
--- a/components/viz/service/display/resolved_frame_data.h
+++ b/components/viz/service/display/resolved_frame_data.h
@@ -5,11 +5,13 @@
 #ifndef COMPONENTS_VIZ_SERVICE_DISPLAY_RESOLVED_FRAME_DATA_H_
 #define COMPONENTS_VIZ_SERVICE_DISPLAY_RESOLVED_FRAME_DATA_H_
 
+#include <unordered_map>
 #include <vector>
 
 #include "base/containers/flat_map.h"
 #include "components/viz/common/quads/compositor_render_pass.h"
 #include "components/viz/common/quads/draw_quad.h"
+#include "components/viz/common/resources/resource_id.h"
 #include "components/viz/common/surfaces/surface_id.h"
 #include "components/viz/service/viz_service_export.h"
 
@@ -34,9 +36,6 @@
 
   CompositorRenderPass* render_pass;
   std::vector<ResolvedQuadData> draw_quads;
-
-  // Tracks if prewalk is visiting this render pass to avoid cycles.
-  bool is_visited = false;
 };
 
 // Holds computed information for a particular Surface+CompositorFrame. The
@@ -54,9 +53,24 @@
   bool is_valid() const { return valid_; }
   uint64_t frame_index() const { return frame_index_; }
 
-  // Update the list of resolved pass data. This will set frame index and mark
-  // as valid.
-  void UpdateResolvedPassData(std::vector<ResolvedPassData> resolved_passes);
+  // Updates resolved frame data for a new active frame. This will recompute
+  // ResolvedPassData. |child_to_parent_map| is the ResourceId mapping provided
+  // from DisplayResourceProvider which includes all of ResourceIds referenced
+  // by quads in the active frame. Returns all ResourceIds that are used in the
+  // active frame.
+  //
+  // This performs the following validation on the active CompositorFrame.
+  // 1. Checks each ResourceId was registered with DisplayResourceProvider and
+  //    is in |child_to_parent_map|.
+  // 2. Checks that CompositorRenderPasses have unique ids.
+  // 3. Checks that CompositorRenderPassDrawQuads only embed render passes that
+  //    are drawn before. This has the side effect of disallowing any cycles.
+  //
+  // If validation fails then an empty set of resources will be returned, all
+  // ResolvedPassData will be cleared and is_valid() will return false.
+  ResourceIdSet UpdateForActiveFrame(
+      const std::unordered_map<ResourceId, ResourceId, ResourceIdHasher>&
+          child_to_parent_map);
 
   // Sets frame index and marks as invalid. This also clears any existing
   // resolved pass data.
diff --git a/components/viz/service/display/resolved_frame_data_unittest.cc b/components/viz/service/display/resolved_frame_data_unittest.cc
index c2ae2ce..b67bc4a 100644
--- a/components/viz/service/display/resolved_frame_data_unittest.cc
+++ b/components/viz/service/display/resolved_frame_data_unittest.cc
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "components/viz/common/quads/compositor_render_pass.h"
+#include "components/viz/service/display/display_resource_provider_software.h"
 #include "components/viz/service/display_embedder/server_shared_bitmap_manager.h"
 #include "components/viz/service/frame_sinks/frame_sink_manager_impl.h"
 #include "components/viz/service/surfaces/surface.h"
@@ -19,53 +20,83 @@
 namespace viz {
 namespace {
 
-TEST(ResolvedFrameDataTest, ResolvedRenderPassData) {
-  constexpr gfx::Rect output_rect(100, 100);
-  TestSurfaceIdAllocator surface_id(FrameSinkId(1, 1));
+constexpr gfx::Rect kOutputRect(100, 100);
 
-  ServerSharedBitmapManager shared_bitmap_manager;
-  FrameSinkManagerImpl frame_sink_manager(&shared_bitmap_manager);
-  auto support = std::make_unique<CompositorFrameSinkSupport>(
-      nullptr, &frame_sink_manager, surface_id.frame_sink_id(),
-      /*is_root=*/true);
+std::unique_ptr<CompositorRenderPass> BuildRenderPass(int id) {
+  auto render_pass = CompositorRenderPass::Create();
+  render_pass->SetNew(CompositorRenderPassId::FromUnsafeValue(id), kOutputRect,
+                      kOutputRect, gfx::Transform());
+  return render_pass;
+}
 
-  {
-    // Create a CompositorFrame and submit it to |surface_id| so there is a
-    // fully populated Surface with an active CompositorFrame.
-    CompositorRenderPassList render_passes;
-    for (int i = 0; i < 3; ++i) {
-      auto render_pass = CompositorRenderPass::Create();
-      render_pass->SetNew(CompositorRenderPassId::FromUnsafeValue(i + 100),
-                          output_rect, output_rect, gfx::Transform());
-      render_passes.push_back(std::move(render_pass));
-    }
+void AddRenderPassQuad(CompositorRenderPass* render_pass,
+                       CompositorRenderPassId render_pass_id) {
+  auto* sqs = render_pass->CreateAndAppendSharedQuadState();
+  sqs->SetAll(gfx::Transform(), kOutputRect, kOutputRect, gfx::MaskFilterInfo(),
+              absl::nullopt, /*are_contents_opaque=*/false, 1,
+              SkBlendMode::kSrcOver, 0);
+  auto* quad =
+      render_pass->CreateAndAppendDrawQuad<CompositorRenderPassDrawQuad>();
+  quad->SetNew(sqs, kOutputRect, kOutputRect, render_pass_id,
+               kInvalidResourceId, gfx::RectF(), gfx::Size(), gfx::Vector2dF(),
+               gfx::PointF(), gfx::RectF(),
+               /*force_anti_aliasing_off=*/false,
+               /*backdrop_filter_quality=*/1.0f);
+}
 
-    auto frame = CompositorFrameBuilder()
-                     .SetRenderPassList(std::move(render_passes))
-                     .Build();
-    support->SubmitCompositorFrame(surface_id.local_surface_id(),
-                                   std::move(frame));
+class ResolvedFrameDataTest : public testing::Test {
+ public:
+  ResolvedFrameDataTest()
+      : support_(std::make_unique<CompositorFrameSinkSupport>(
+            nullptr,
+            &frame_sink_manager_,
+            surface_id_.frame_sink_id(),
+            /*is_root=*/true)) {}
+
+ protected:
+  // Submits a CompositorFrame so there is a fully populated surface with an
+  // active CompositorFrame. Returns the corresponding surface.
+  Surface* SubmitCompositorFrame(CompositorFrame frame) {
+    support_->SubmitCompositorFrame(surface_id_.local_surface_id(),
+                                    std::move(frame));
+
+    Surface* surface =
+        frame_sink_manager_.surface_manager()->GetSurfaceForId(surface_id_);
+    EXPECT_TRUE(surface);
+    EXPECT_TRUE(surface->HasActiveFrame());
+    return surface;
   }
 
-  Surface* surface =
-      frame_sink_manager.surface_manager()->GetSurfaceForId(surface_id);
-  EXPECT_TRUE(surface);
-  EXPECT_TRUE(surface->HasActiveFrame());
+  ServerSharedBitmapManager shared_bitmap_manager_;
+  FrameSinkManagerImpl frame_sink_manager_{&shared_bitmap_manager_};
 
-  ResolvedFrameData resolved_frame(surface_id, surface);
+  TestSurfaceIdAllocator surface_id_{FrameSinkId(1, 1)};
+  std::unique_ptr<CompositorFrameSinkSupport> support_;
 
-  // The resolved frame should be false immediately.
+  std::unordered_map<ResourceId, ResourceId, ResourceIdHasher>
+      child_to_parent_map_;
+};
+
+// Submits a CompositorFrame with three valid render passes then checks that
+// ResolvedPassData is valid and has the correct data.
+TEST_F(ResolvedFrameDataTest, UpdateActiveFrame) {
+  auto frame = CompositorFrameBuilder()
+                   .AddRenderPass(BuildRenderPass(101))
+                   .AddRenderPass(BuildRenderPass(102))
+                   .AddRenderPass(BuildRenderPass(103))
+                   .Build();
+
+  Surface* surface = SubmitCompositorFrame(std::move(frame));
+  ResolvedFrameData resolved_frame(surface_id_, surface);
+
+  // The resolved frame should be false after construction.
   EXPECT_FALSE(resolved_frame.is_valid());
 
-  std::vector<ResolvedPassData> resolved_passes;
-  for (auto& render_pass : surface->GetActiveFrame().render_pass_list) {
-    resolved_passes.emplace_back();
-    resolved_passes.back().render_pass = render_pass.get();
-  }
-
-  // Resolved frame data should be valid after adding resolved render pass data.
-  resolved_frame.UpdateResolvedPassData(std::move(resolved_passes));
+  // Resolved frame data should be valid after adding resolved render pass data
+  // and have three render passes.
+  resolved_frame.UpdateForActiveFrame(child_to_parent_map_);
   EXPECT_TRUE(resolved_frame.is_valid());
+  EXPECT_EQ(resolved_frame.RenderPassCount(), 3u);
 
   // Looking up ResolvedPassData by CompositorRenderPassId should work.
   for (auto& render_pass : surface->GetActiveFrame().render_pass_list) {
@@ -79,9 +110,64 @@
   EXPECT_FALSE(resolved_frame.is_valid());
 }
 
-TEST(ResolvedFrameDataTest, MarkAsUsed) {
-  TestSurfaceIdAllocator surface_id(FrameSinkId(1, 1));
-  ResolvedFrameData resolved_frame(surface_id, nullptr);
+// Constructs a CompositorFrame with two render passes that have the same id.
+// Verifies the frame is rejected as invalid.
+TEST_F(ResolvedFrameDataTest, DupliateRenderPassIds) {
+  auto frame = CompositorFrameBuilder()
+                   .AddRenderPass(BuildRenderPass(1))
+                   .AddRenderPass(BuildRenderPass(1))
+                   .Build();
+
+  Surface* surface = SubmitCompositorFrame(std::move(frame));
+  ResolvedFrameData resolved_frame(surface_id_, surface);
+
+  resolved_frame.UpdateForActiveFrame(child_to_parent_map_);
+  EXPECT_FALSE(resolved_frame.is_valid());
+}
+
+// Constructs a CompositorFrame with render pass that tries to embed itself
+// forming a cycle. Verifies the frame is rejected as invalid.
+TEST_F(ResolvedFrameDataTest, RenderPassIdsSelfCycle) {
+  // Create a CompositorFrame and submit it to |surface_id| so there is a
+  // fully populated Surface with an active CompositorFrame.
+  auto render_pass = BuildRenderPass(1);
+  AddRenderPassQuad(render_pass.get(), render_pass->id);
+
+  auto frame =
+      CompositorFrameBuilder().AddRenderPass(std::move(render_pass)).Build();
+
+  Surface* surface = SubmitCompositorFrame(std::move(frame));
+  ResolvedFrameData resolved_frame(surface_id_, surface);
+
+  resolved_frame.UpdateForActiveFrame(child_to_parent_map_);
+  EXPECT_FALSE(resolved_frame.is_valid());
+}
+
+// Constructs a CompositorFrame with two render pass that tries to embed each
+// other forming a cycle. Verifies the frame is rejected as invalid.
+TEST_F(ResolvedFrameDataTest, RenderPassIdsCycle) {
+  // Create a CompositorFrame and submit it to |surface_id| so there is a
+  // fully populated Surface with an active CompositorFrame.
+  auto render_pass1 = BuildRenderPass(1);
+  auto render_pass2 = BuildRenderPass(2);
+  AddRenderPassQuad(render_pass1.get(), render_pass2->id);
+  AddRenderPassQuad(render_pass2.get(), render_pass1->id);
+
+  auto frame = CompositorFrameBuilder()
+                   .AddRenderPass(std::move(render_pass1))
+                   .AddRenderPass(std::move(render_pass2))
+                   .Build();
+  Surface* surface = SubmitCompositorFrame(std::move(frame));
+  ResolvedFrameData resolved_frame(surface_id_, surface);
+
+  // RenderPasses have duplicate IDs so the resolved frame should be marked as
+  // invalid.
+  resolved_frame.UpdateForActiveFrame(child_to_parent_map_);
+  EXPECT_FALSE(resolved_frame.is_valid());
+}
+
+TEST_F(ResolvedFrameDataTest, MarkAsUsed) {
+  ResolvedFrameData resolved_frame(surface_id_, nullptr);
 
   EXPECT_TRUE(resolved_frame.MarkAsUsed());
   EXPECT_FALSE(resolved_frame.MarkAsUsed());
diff --git a/components/viz/service/display/surface_aggregator.cc b/components/viz/service/display/surface_aggregator.cc
index b8f8303..a5910696 100644
--- a/components/viz/service/display/surface_aggregator.cc
+++ b/components/viz/service/display/surface_aggregator.cc
@@ -1248,7 +1248,6 @@
   surface->TakeCopyOutputRequests(&copy_requests);
 
   const auto& source_pass_list = frame.render_pass_list;
-  DCHECK(valid_surfaces_.count(surface->surface_id()));
   if (!valid_surfaces_.count(surface->surface_id()))
     return;
 
@@ -1368,13 +1367,6 @@
     bool in_moved_pixel_rp,
     PrewalkResult* result) {
   const Surface* surface = resolved_frame.surface();
-
-  if (resolved_pass.is_visited) {
-    // This render pass is an ancestor of itself and is not supported.
-    return gfx::Rect();
-  }
-
-  base::AutoReset<bool> reset_visited(&resolved_pass.is_visited, true);
   const CompositorRenderPass& render_pass = *resolved_pass.render_pass;
 
   if (render_pass.backdrop_filters.HasFilterThatMovesPixels()) {
@@ -1599,9 +1591,7 @@
   Surface* surface = resolved_frame.surface();
   const CompositorFrame& compositor_frame =
       surface->GetActiveOrInterpolatedFrame();
-
   auto& resource_list = compositor_frame.resource_list;
-  auto& render_passes = compositor_frame.render_pass_list;
 
   int child_id = ChildIdForSurface(surface);
 
@@ -1613,48 +1603,12 @@
 
   stats_->declare_resources_count += resource_list.size();
 
-  // Figure out which resources are actually used in the render pass.
-  // Note that we first gather them in a vector, since ResourceIdSet (which we
-  // actually need) is a flat_set, which means bulk insertion we do at the end
-  // is more efficient.
-  std::vector<ResourceId> referenced_resources;
-  referenced_resources.reserve(resource_list.size());
-  const auto& child_to_parent_map = provider_->GetChildToParentMap(child_id);
-
-  // Reset and compute new render pass / quad data for this frame. This stores
-  // remapped display resource ids.
-  std::vector<ResolvedPassData> resolved_pass_list(render_passes.size());
-  for (size_t i = 0; i < render_passes.size(); ++i) {
-    auto& render_pass = render_passes[i];
-    resolved_pass_list[i].render_pass = render_pass.get();
-
-    // Loop through the quads, remapping resource ids and storing them.
-    auto& draw_quads = resolved_pass_list[i].draw_quads;
-    draw_quads.reserve(render_pass->quad_list.size());
-    for (auto* quad : render_pass->quad_list) {
-      draw_quads.emplace_back(*quad);
-      for (ResourceId& resource_id : draw_quads.back().remapped_resources) {
-        // If we're using a resource which was not declared in the
-        // |resource_list| then this is an invalid frame, we can abort.
-        auto iter = child_to_parent_map.find(resource_id);
-        if (iter == child_to_parent_map.end()) {
-          DLOG(ERROR) << "Invalid resource for " << resolved_frame.surface_id();
-          resolved_frame.SetInvalid();
-          return;
-        }
-
-        referenced_resources.push_back(resource_id);
-        resource_id = iter->second;
-      }
-    }
-  }
-
-  resolved_frame.UpdateResolvedPassData(std::move(resolved_pass_list));
+  ResourceIdSet resource_set = resolved_frame.UpdateForActiveFrame(
+      provider_->GetChildToParentMap(child_id));
 
   // Declare the used resources to the provider. This will cause all resources
   // that were received but not used in the render passes to be unreferenced in
   // the surface, and returned to the child in the resource provider.
-  ResourceIdSet resource_set(std::move(referenced_resources));
   provider_->DeclareUsedResourcesFromChild(child_id, resource_set);
 }
 
@@ -2025,7 +1979,7 @@
   UMA_HISTOGRAM_COUNTS_100("Compositing.SurfaceAggregator.CopiedSurfaceCount",
                            stats_->copied_surface_count);
   UMA_HISTOGRAM_COUNTS_1000(
-      "Compositing.SurfaceAggregator.DeclareResourcesCount",
+      "Compositing.SurfaceAggregator.DeclareResourceCount",
       stats_->declare_resources_count);
 
   constexpr auto kMinTime = base::TimeDelta::FromMicroseconds(5);
diff --git a/components/viz/service/display/surface_aggregator_unittest.cc b/components/viz/service/display/surface_aggregator_unittest.cc
index 21b4cf3..5334212 100644
--- a/components/viz/service/display/surface_aggregator_unittest.cc
+++ b/components/viz/service/display/surface_aggregator_unittest.cc
@@ -2578,8 +2578,9 @@
                         SK_ColorWHITE, gfx::Rect(5, 5),
                         /*stretch_content_to_fill_bounds=*/false)};
   std::vector<Quad> root_quads = {Quad::SolidColorQuad(1, gfx::Rect(5, 5))};
-  std::vector<Pass> root_passes = {Pass(secondary_quads, kSurfaceSize),
-                                   Pass(root_quads, kSurfaceSize)};
+  std::vector<Pass> root_passes = {
+      Pass(secondary_quads, CompositorRenderPassId(1), kSurfaceSize),
+      Pass(root_quads, CompositorRenderPassId(2), kSurfaceSize)};
 
   CompositorFrame root_frame = MakeEmptyCompositorFrame();
   AddPasses(&root_frame.render_pass_list, root_passes,
@@ -7592,9 +7593,8 @@
   testing::Mock::VerifyAndClearExpectations(&aggregated_damage_callback);
 }
 
-// Verifies that if a child surface is embedded in the root surface inside a
-// render pass cycle, only the first embedding of the child surface is
-// considered in the damage rect and its repeated embeddings are ignored.
+// Verifies that if a CompositorFrame contains a render pass id cycle then the
+// frame is rejected as invalid.
 TEST_F(SurfaceAggregatorValidSurfaceTest,
        AggregateDamageRectWithRenderPassCycle) {
   // Add a callback for when the surface is damaged.
@@ -7602,33 +7602,15 @@
   root_sink_->SetAggregatedDamageCallbackForTesting(
       aggregated_damage_callback.GetCallback());
 
-  // The child surface consists of a single render pass containing a single
-  // solid color draw quad.
-  std::vector<Quad> child_quads = {
-      Quad::SolidColorQuad(SK_ColorGREEN, gfx::Rect(5, 5))};
-  std::vector<Pass> child_passes = {Pass(child_quads, kSurfaceSize)};
-
-  CompositorFrame child_frame = MakeEmptyCompositorFrame();
-  AddPasses(&child_frame.render_pass_list, child_passes,
-            &child_frame.metadata.referenced_surfaces);
-
-  TestSurfaceIdAllocator child_surface_id(child_sink_->frame_sink_id());
-  child_sink_->SubmitCompositorFrame(child_surface_id.local_surface_id(),
-                                     std::move(child_frame));
-
   // The root surface consists of two render passes:
-  //  1) The first render pass contains a surface draw quad referencing the
-  //     child surface and a render pass draw quad referencing the second
-  //     render pass.
-  //  2) The second render pass contains a render pass draw quad with a
-  //     transform applied that is referencing the first render pass,
-  //     creating a cycle.
+  //  1) The first render pass contains a solid color draw quad and a render
+  //     pass draw quad referencing the second render pass.
+  //  2) The second render pass contains a render pass draw quad that is
+  //     referencing the first render pass, creating a cycle.
   CompositorRenderPassId root_pass_ids[] = {CompositorRenderPassId{1},
                                             CompositorRenderPassId{2}};
   std::vector<Quad> root_quads_1 = {
-      Quad::SurfaceQuad(SurfaceRange(absl::nullopt, child_surface_id),
-                        SK_ColorWHITE, gfx::Rect(5, 5),
-                        /*stretch_content_to_fill_bounds=*/false),
+      Quad::SolidColorQuad(SK_ColorGREEN, gfx::Rect(5, 5)),
       Quad::RenderPassQuad(root_pass_ids[1], gfx::Transform(), true)};
   std::vector<Quad> root_quads_2 = {
       Quad::RenderPassQuad(root_pass_ids[0], gfx::Transform(), true)};
@@ -7640,46 +7622,14 @@
   AddPasses(&root_frame.render_pass_list, root_passes,
             &root_frame.metadata.referenced_surfaces);
 
-  auto& rpdq_2_transform = root_frame.render_pass_list.front()
-                               ->shared_quad_state_list.back()
-                               ->quad_to_target_transform;
-  rpdq_2_transform.Translate(30.f, 50.f);
-  rpdq_2_transform.Scale(2.f, 2.f);
-
   root_sink_->SubmitCompositorFrame(root_surface_id_.local_surface_id(),
                                     std::move(root_frame));
 
-  // Damage rect for the first aggregation would contain entire root surface
-  // which is just (0,0 100x100). The child surface is only embedded once
-  // and without any transform, since repeated embeddings caused by the
-  // render pass cycle are ignored.
-  EXPECT_CALL(
-      aggregated_damage_callback,
-      OnAggregatedDamage(root_surface_id_.local_surface_id(), kSurfaceSize,
-                         gfx::Rect(0, 0, 100, 100), next_display_time()));
+  // Verify the CompositorFrame was rejected and there is no damage.
+  EXPECT_CALL(aggregated_damage_callback, OnAggregatedDamage(_, _, _, _))
+      .Times(0);
   auto aggregated_frame = AggregateFrame(root_surface_id_);
-  testing::Mock::VerifyAndClearExpectations(&aggregated_damage_callback);
-
-  // For the second aggregation we only damage the child surface at
-  // (10,10 10x10). The aggregated damage rect should reflect that only for
-  // the first embedding.
-  CompositorFrame child_frame_2 = MakeEmptyCompositorFrame();
-  AddPasses(&child_frame_2.render_pass_list, child_passes,
-            &child_frame_2.metadata.referenced_surfaces);
-
-  child_frame_2.render_pass_list.back()->damage_rect =
-      gfx::Rect(10, 10, 10, 10);
-
-  child_sink_->SubmitCompositorFrame(child_surface_id.local_surface_id(),
-                                     std::move(child_frame_2));
-
-  gfx::Rect expected_damage_rect(10, 10, 10, 10);
-  EXPECT_CALL(
-      aggregated_damage_callback,
-      OnAggregatedDamage(root_surface_id_.local_surface_id(), kSurfaceSize,
-                         expected_damage_rect, next_display_time()));
-  auto aggregated_frame_2 = AggregateFrame(root_surface_id_);
-  testing::Mock::VerifyAndClearExpectations(&aggregated_damage_callback);
+  EXPECT_TRUE(aggregated_frame.render_pass_list.empty());
 }
 
 // Verify that a SurfaceDrawQuad with !|allow_merge| won't be merged into
diff --git a/components/webrtc/BUILD.gn b/components/webrtc/BUILD.gn
index a263fc7..49eac6cc 100644
--- a/components/webrtc/BUILD.gn
+++ b/components/webrtc/BUILD.gn
@@ -2,15 +2,28 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("webrtc") {
+source_set("media_stream_device_enumerator") {
   sources = [
     "media_stream_device_enumerator.h",
     "media_stream_device_enumerator_impl.cc",
     "media_stream_device_enumerator_impl.h",
+  ]
+
+  deps = [
+    "//base",
+    "//content/public/browser",
+    "//third_party/blink/public/common",
+  ]
+}
+
+source_set("webrtc") {
+  sources = [
     "media_stream_devices_controller.cc",
     "media_stream_devices_controller.h",
   ]
 
+  public_deps = [ ":media_stream_device_enumerator" ]
+
   deps = [
     "//base",
     "//components/content_settings/core/common",
diff --git a/content/browser/android/battery_metrics.cc b/content/browser/android/battery_metrics.cc
index f07b1cd..dd18ceb 100644
--- a/content/browser/android/battery_metrics.cc
+++ b/content/browser/android/battery_metrics.cc
@@ -180,12 +180,6 @@
     exclusive_dark_mode_histogram->AddCount(capacity_consumed_avg,
                                             num_sampling_periods);
   }
-
-  // Also report the time it took for us to detect this drop to see what the
-  // overall metric sensitivity is.
-  UMA_HISTOGRAM_LONG_TIMES_100(
-      "Power.ForegroundBatteryDrain.TimeBetweenEvents",
-      base::TimeDelta::FromSeconds(30 * num_sampling_periods));
 }
 
 }  // namespace
diff --git a/content/browser/background_fetch/background_fetch_data_manager_unittest.cc b/content/browser/background_fetch/background_fetch_data_manager_unittest.cc
index abe7993..c851a45c 100644
--- a/content/browser/background_fetch/background_fetch_data_manager_unittest.cc
+++ b/content/browser/background_fetch/background_fetch_data_manager_unittest.cc
@@ -114,7 +114,7 @@
 }
 
 void GetNumUserData(base::OnceClosure quit_closure,
-                    int* out_size,
+                    size_t* out_size,
                     const std::vector<std::string>& data,
                     blink::ServiceWorkerStatusCode status) {
   DCHECK(out_size);
@@ -124,9 +124,9 @@
 }
 
 struct ResponseStateStats {
-  int pending_requests = 0;
-  int active_requests = 0;
-  int completed_requests = 0;
+  size_t pending_requests = 0;
+  size_t active_requests = 0;
+  size_t completed_requests = 0;
 };
 
 bool operator==(const ResponseStateStats& s1, const ResponseStateStats& s2) {
diff --git a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
index 8829d443..25ba5a5 100644
--- a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
+++ b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
@@ -262,8 +262,10 @@
       SerializeHandleCallback callback) override {
     writes_.emplace_back(std::move(pending_token));
     base::SequencedTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::BindOnce(std::move(callback),
-                                  std::vector<uint8_t>{writes_.size() - 1}));
+        FROM_HERE,
+        base::BindOnce(
+            std::move(callback),
+            std::vector<uint8_t>{static_cast<uint8_t>(writes_.size() - 1)}));
   }
 
   void DeserializeHandle(
diff --git a/content/browser/indexed_db/indexed_db_feature_observer_browsertest.cc b/content/browser/indexed_db/indexed_db_feature_observer_browsertest.cc
index 180759b..e446c01b 100644
--- a/content/browser/indexed_db/indexed_db_feature_observer_browsertest.cc
+++ b/content/browser/indexed_db/indexed_db_feature_observer_browsertest.cc
@@ -259,14 +259,9 @@
 
 // Verify that content::FeatureObserver is notified when a frame with active
 // IndexedDB connections is navigated away.
-// https://crbug.com/1218731 disabled on desktop.
-#if defined(OS_ANDROID)
-#define MAYBE_ObserverNavigate ObserverNavigate
-#else
-#define MAYBE_ObserverNavigate DISABLED_ObserverNavigate
-#endif
+// https://crbug.com/1218731 fails when BackforwardCache is enabled.
 IN_PROC_BROWSER_TEST_F(IndexedDBFeatureObserverBrowserTest,
-                       MAYBE_ObserverNavigate) {
+                       DISABLED_ObserverNavigate) {
   if (!CheckShouldRunTestAndNavigate())
     return;
 
diff --git a/content/browser/log_console_message.cc b/content/browser/log_console_message.cc
index 76d45c1..8b9c6c2 100644
--- a/content/browser/log_console_message.cc
+++ b/content/browser/log_console_message.cc
@@ -7,31 +7,11 @@
 #include "base/feature_list.h"
 #include "base/logging.h"
 #include "build/build_config.h"
+#include "content/public/browser/console_message.h"
 #include "content/public/common/content_features.h"
 
 namespace content {
 
-logging::LogSeverity ConsoleMessageLevelToLogSeverity(
-    blink::mojom::ConsoleMessageLevel level) {
-  logging::LogSeverity log_severity = logging::LOG_VERBOSE;
-  switch (level) {
-    case blink::mojom::ConsoleMessageLevel::kVerbose:
-      log_severity = logging::LOG_VERBOSE;
-      break;
-    case blink::mojom::ConsoleMessageLevel::kInfo:
-      log_severity = logging::LOG_INFO;
-      break;
-    case blink::mojom::ConsoleMessageLevel::kWarning:
-      log_severity = logging::LOG_WARNING;
-      break;
-    case blink::mojom::ConsoleMessageLevel::kError:
-      log_severity = logging::LOG_ERROR;
-      break;
-  }
-
-  return log_severity;
-}
-
 void LogConsoleMessage(blink::mojom::ConsoleMessageLevel log_level,
                        const std::u16string& message,
                        int32_t line_number,
diff --git a/content/browser/log_console_message.h b/content/browser/log_console_message.h
index 1c2d7b6..8acf08e 100644
--- a/content/browser/log_console_message.h
+++ b/content/browser/log_console_message.h
@@ -12,9 +12,6 @@
 
 namespace content {
 
-logging::LogSeverity ConsoleMessageLevelToLogSeverity(
-    blink::mojom::ConsoleMessageLevel level);
-
 // Optionally logs a message from the console, depending on the set logging
 // levels and incognito state.
 void LogConsoleMessage(blink::mojom::ConsoleMessageLevel log_level,
diff --git a/content/browser/picture_in_picture/picture_in_picture_content_browsertest.cc b/content/browser/picture_in_picture/picture_in_picture_content_browsertest.cc
index 9c03db4..f75e179 100644
--- a/content/browser/picture_in_picture/picture_in_picture_content_browsertest.cc
+++ b/content/browser/picture_in_picture/picture_in_picture_content_browsertest.cc
@@ -44,9 +44,13 @@
   void SetPlaybackState(PlaybackState playback_state) override {
     playback_state_ = playback_state;
   }
-  void SetPlayPauseButtonVisibility(bool is_visible) override {}
+  void SetPlayPauseButtonVisibility(bool is_visible) override {
+    play_pause_button_visible_ = is_visible;
+  }
   void SetSkipAdButtonVisibility(bool is_visible) override {}
-  void SetNextTrackButtonVisibility(bool is_visible) override {}
+  void SetNextTrackButtonVisibility(bool is_visible) override {
+    next_track_button_visible_ = is_visible;
+  }
   void SetPreviousTrackButtonVisibility(bool is_visible) override {}
   void SetMicrophoneMuted(bool muted) override {}
   void SetCameraState(bool turned_on) override {}
@@ -60,6 +64,14 @@
     return playback_state_;
   }
 
+  const absl::optional<bool>& play_pause_button_visible() const {
+    return play_pause_button_visible_;
+  }
+
+  const absl::optional<bool>& next_track_button_visible() const {
+    return next_track_button_visible_;
+  }
+
  private:
   // We maintain the visibility state so that
   // PictureInPictureWindowControllerImpl::Close() sees that the window is
@@ -68,6 +80,8 @@
 
   gfx::Size size_;
   absl::optional<PlaybackState> playback_state_;
+  absl::optional<bool> play_pause_button_visible_;
+  absl::optional<bool> next_track_button_visible_;
 
   DISALLOW_COPY_AND_ASSIGN(TestOverlayWindow);
 };
@@ -150,6 +164,15 @@
     }
   }
 
+  // Waits until the Shell's WebContents has the expected title.
+  void WaitForTitle(const std::u16string& expected_title,
+                    const base::Location& location = FROM_HERE) {
+    EXPECT_EQ(
+        expected_title,
+        TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle())
+        << "The wait was started here: " << location.ToString();
+  }
+
   TestWebContentsDelegate* web_contents_delegate() {
     return web_contents_delegate_.get();
   }
@@ -180,37 +203,25 @@
   // Play first video.
   ASSERT_TRUE(ExecJs(shell(), "videos[0].play();"));
 
-  std::u16string expected_title = u"videos[0] playing";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"videos[0] playing");
 
   // Play second video.
   ASSERT_TRUE(ExecJs(shell(), "videos[1].play();"));
 
-  expected_title = u"videos[1] playing";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"videos[1] playing");
 
   ASSERT_FALSE(web_contents_delegate()->is_in_picture_in_picture());
 
   // Send first video in Picture-in-Picture.
   ASSERT_TRUE(ExecJs(shell(), "videos[0].requestPictureInPicture();"));
 
-  expected_title = u"videos[0] entered picture-in-picture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"videos[0] entered picture-in-picture");
   EXPECT_TRUE(web_contents_delegate()->is_in_picture_in_picture());
 
   // Send second video in Picture-in-Picture.
   ASSERT_TRUE(ExecJs(shell(), "videos[1].requestPictureInPicture();"));
 
-  expected_title = u"videos[1] entered picture-in-picture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"videos[1] entered picture-in-picture");
 
   // The session should still be active and ExitPictureInPicture() never called.
   EXPECT_NE(nullptr, window_controller()->active_session_for_testing());
@@ -226,45 +237,30 @@
       embedded_test_server()->GetURL(
           "example.com", "/media/picture_in_picture/two-videos.html")));
 
-  std::u16string expected_title = u"iframe loaded";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"iframe loaded");
 
   // Play first video.
   ASSERT_TRUE(ExecJs(shell(), "videos[0].play();"));
 
-  expected_title = u"videos[0] playing";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"videos[0] playing");
 
   // Play second video (in iframe).
   ASSERT_TRUE(ExecJs(shell(), "iframeVideos[0].play();"));
 
-  expected_title = u"iframeVideos[0] playing";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"iframeVideos[0] playing");
 
   ASSERT_FALSE(web_contents_delegate()->is_in_picture_in_picture());
 
   // Send first video in Picture-in-Picture.
   ASSERT_TRUE(ExecJs(shell(), "videos[0].requestPictureInPicture();"));
 
-  expected_title = u"videos[0] entered picture-in-picture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"videos[0] entered picture-in-picture");
   EXPECT_TRUE(web_contents_delegate()->is_in_picture_in_picture());
 
   // Send second video in Picture-in-Picture.
   ASSERT_TRUE(ExecJs(shell(), "iframeVideos[0].requestPictureInPicture();"));
 
-  expected_title = u"iframeVideos[0] entered picture-in-picture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"iframeVideos[0] entered picture-in-picture");
 
   // The session should still be active and ExitPictureInPicture() never called.
   EXPECT_NE(nullptr, window_controller()->active_session_for_testing());
@@ -328,20 +324,14 @@
   ASSERT_TRUE(ExecJs(shell(), "addPlayEventListener();"));
   window_controller()->TogglePlayPause();
 
-  std::u16string expected_title = u"play";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"play");
   WaitForPlaybackState(OverlayWindow::PlaybackState::kPlaying);
 
   // Simulate pausing playback by interacting with the PiP window.
   ASSERT_TRUE(ExecJs(shell(), "addPauseEventListener();"));
   window_controller()->TogglePlayPause();
 
-  expected_title = u"pause";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"pause");
   WaitForPlaybackState(OverlayWindow::PlaybackState::kPaused);
 }
 
@@ -371,6 +361,47 @@
   WaitForPlaybackState(OverlayWindow::PlaybackState::kPaused);
 }
 
+// Tests that when closing the window after the player was reset, the <video>
+// element is still notified.
+IN_PROC_BROWSER_TEST_F(PictureInPictureContentBrowserTest,
+                       ClosingWindowWithPlayerResetNotifiesElement) {
+  ASSERT_TRUE(NavigateToURL(
+      shell(), GetTestUrl("media/picture_in_picture", "one-video.html")));
+  ASSERT_EQ(true, EvalJs(shell(), "enterPictureInPicture();"));
+
+  ASSERT_TRUE(ExecJs(shell(), "addPictureInPictureEventListeners();"));
+
+  ASSERT_EQ(true, EvalJs(shell(), "resetVideo();"));
+
+  window_controller()->Close(/*should_pause_video=*/true);
+
+  WaitForTitle(u"leavepictureinpicture");
+}
+
+// When the player object associated with a video element is destroyed, closing
+// the Picture-in-Picture window is the only interaction possible. Thus the
+// play/pause/replay button should be hidden.
+IN_PROC_BROWSER_TEST_F(PictureInPictureContentBrowserTest,
+                       ResettingPlayerHidesPlayPause) {
+  ASSERT_TRUE(NavigateToURL(
+      shell(), GetTestUrl("media/picture_in_picture", "one-video.html")));
+  ASSERT_EQ(true, EvalJs(shell(), "enterPictureInPicture();"));
+
+  ASSERT_EQ(true, EvalJs(shell(), "resetVideo();"));
+
+  EXPECT_EQ(overlay_window()->play_pause_button_visible().value_or(true),
+            false);
+
+  // Load new media on the video element. This creates a new player.
+  ASSERT_EQ(true, EvalJs(shell(), "updateVideoSrcAndPlay();"));
+
+  // The play/pause/replay button should be functional again.
+  EXPECT_EQ(overlay_window()->play_pause_button_visible().value_or(false),
+            true);
+  window_controller()->TogglePlayPause();
+  WaitForPlaybackState(OverlayWindow::PlaybackState::kPaused);
+}
+
 class MediaSessionPictureInPictureContentBrowserTest
     : public PictureInPictureContentBrowserTest {
  public:
@@ -408,10 +439,7 @@
   ASSERT_TRUE(ExecJs(shell(), "addPlayEventListener();"));
   window_controller()->TogglePlayPause();
 
-  std::u16string expected_title = u"play";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"play");
   WaitForPlaybackState(OverlayWindow::PlaybackState::kPlaying);
 
   // Simulate pausing playback by invoking the Media Session "pause" action
@@ -420,10 +448,7 @@
   ASSERT_TRUE(ExecJs(shell(), "addPauseEventListener();"));
   window_controller()->TogglePlayPause();
 
-  expected_title = u"pause";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"pause");
   WaitForPlaybackState(OverlayWindow::PlaybackState::kPaused);
 }
 
@@ -443,10 +468,7 @@
   // window should be in the "playing" state.
   ASSERT_TRUE(ExecJs(shell(), "addPlayEventListener();"));
   ASSERT_EQ(true, EvalJs(shell(), "start();"));
-  std::u16string expected_title = u"play";
-  ASSERT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"play");
   ASSERT_EQ(overlay_window()->playback_state(),
             OverlayWindow::PlaybackState::kPlaying);
 
@@ -454,10 +476,7 @@
   // through interaction with the PiP window.
   ASSERT_TRUE(ExecJs(shell(), "addPauseEventListener();"));
   window_controller()->TogglePlayPause();
-  expected_title = u"pause";
-  ASSERT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"pause");
   ASSERT_EQ(overlay_window()->playback_state(),
             OverlayWindow::PlaybackState::kPaused);
 
@@ -465,10 +484,7 @@
   // through interaction with the PiP window.
   ASSERT_TRUE(ExecJs(shell(), "addPlayEventListener();"));
   window_controller()->TogglePlayPause();
-  expected_title = u"play";
-  ASSERT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"play");
   ASSERT_EQ(overlay_window()->playback_state(),
             OverlayWindow::PlaybackState::kPlaying);
 }
@@ -504,10 +520,7 @@
   WaitForPlaybackState(OverlayWindow::PlaybackState::kEndOfVideo);
 
   window_controller()->Close(/*should_pause_video=*/false);
-  const std::u16string expected_title = u"leavepictureinpicture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"leavepictureinpicture");
 
   ASSERT_EQ(true, EvalJs(shell(), "enterPictureInPicture();"));
 
@@ -515,6 +528,41 @@
   WaitForPlaybackState(OverlayWindow::PlaybackState::kPlaying);
 }
 
+// When the player object associated with a video element is destroyed, any
+// Media Session actions that were set are no longer available.
+IN_PROC_BROWSER_TEST_F(MediaSessionPictureInPictureContentBrowserTest,
+                       ResettingPlayerDisablesActions) {
+  ASSERT_TRUE(NavigateToURL(
+      shell(), GetTestUrl("media/picture_in_picture", "one-video.html")));
+  ASSERT_EQ(true, EvalJs(shell(), "enterPictureInPicture();"));
+
+  ASSERT_TRUE(ExecJs(shell(), "setMediaSessionPlayActionHandler();"));
+  ASSERT_TRUE(ExecJs(shell(), "setMediaSessionPauseActionHandler();"));
+  ASSERT_TRUE(ExecJs(shell(), "setMediaSessionNextTrackActionHandler();"));
+
+  ASSERT_EQ(true, EvalJs(shell(), "resetVideo();"));
+
+  // Media Session actions are unavailable with the player removed.
+  EXPECT_EQ(overlay_window()->play_pause_button_visible().value_or(true),
+            false);
+  EXPECT_EQ(overlay_window()->next_track_button_visible().value_or(true),
+            false);
+
+  // Load new media on the video element. This creates a new player.
+  ASSERT_EQ(true, EvalJs(shell(), "updateVideoSrcAndPlay();"));
+
+  // The play/pause/replay and next buttons should be functional again.
+  EXPECT_EQ(overlay_window()->play_pause_button_visible().value_or(false),
+            true);
+  window_controller()->TogglePlayPause();
+  WaitForPlaybackState(OverlayWindow::PlaybackState::kPaused);
+
+  EXPECT_EQ(overlay_window()->next_track_button_visible().value_or(false),
+            true);
+  window_controller()->NextTrack();
+  WaitForPlaybackState(OverlayWindow::PlaybackState::kPlaying);
+}
+
 class AutoPictureInPictureContentBrowserTest
     : public PictureInPictureContentBrowserTest {
  public:
@@ -542,17 +590,11 @@
 
   // Hide page and check that video entered Picture-in-Picture automatically.
   shell()->web_contents()->WasHidden();
-  std::u16string expected_title = u"enterpictureinpicture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"enterpictureinpicture");
 
   // Show page and check that video left Picture-in-Picture automatically.
   shell()->web_contents()->WasShown();
-  expected_title = u"leavepictureinpicture";
-  EXPECT_EQ(
-      expected_title,
-      TitleWatcher(shell()->web_contents(), expected_title).WaitAndGetTitle());
+  WaitForTitle(u"leavepictureinpicture");
 }
 
 }  // namespace content
diff --git a/content/browser/picture_in_picture/picture_in_picture_service_impl.cc b/content/browser/picture_in_picture/picture_in_picture_service_impl.cc
index 7d0850e..cd226c5b 100644
--- a/content/browser/picture_in_picture/picture_in_picture_service_impl.cc
+++ b/content/browser/picture_in_picture/picture_in_picture_service_impl.cc
@@ -32,7 +32,7 @@
 void PictureInPictureServiceImpl::StartSession(
     uint32_t player_id,
     mojo::PendingAssociatedRemote<media::mojom::MediaPlayer> player_remote,
-    const absl::optional<viz::SurfaceId>& surface_id,
+    const viz::SurfaceId& surface_id,
     const gfx::Size& natural_size,
     bool show_play_pause_button,
     mojo::PendingRemote<blink::mojom::PictureInPictureSessionObserver> observer,
@@ -40,23 +40,20 @@
   gfx::Size window_size;
   mojo::PendingRemote<blink::mojom::PictureInPictureSession> session_remote;
 
-  if (surface_id.has_value()) {
-    auto result = GetController().StartSession(
-        this,
-        MediaPlayerId(render_frame_host()->GetGlobalFrameRoutingId(),
-                      player_id),
-        std::move(player_remote), surface_id.value(), natural_size,
-        show_play_pause_button, std::move(observer), &session_remote,
-        &window_size);
+  auto result = GetController().StartSession(
+      this,
+      MediaPlayerId(render_frame_host()->GetGlobalFrameRoutingId(), player_id),
+      std::move(player_remote), surface_id, natural_size,
+      show_play_pause_button, std::move(observer), &session_remote,
+      &window_size);
 
-    if (result == PictureInPictureResult::kSuccess) {
-      // Frames are to be blocklisted from the back-forward cache because the
-      // picture-in-picture continues to be displayed while the page is in the
-      // cache instead of closing.
-      static_cast<RenderFrameHostImpl*>(render_frame_host())
-          ->OnSchedulerTrackedFeatureUsed(
-              blink::scheduler::WebSchedulerTrackedFeature::kPictureInPicture);
-    }
+  if (result == PictureInPictureResult::kSuccess) {
+    // Frames are to be blocklisted from the back-forward cache because the
+    // picture-in-picture continues to be displayed while the page is in the
+    // cache instead of closing.
+    static_cast<RenderFrameHostImpl*>(render_frame_host())
+        ->OnSchedulerTrackedFeatureUsed(
+            blink::scheduler::WebSchedulerTrackedFeature::kPictureInPicture);
   }
 
   std::move(callback).Run(std::move(session_remote), window_size);
diff --git a/content/browser/picture_in_picture/picture_in_picture_service_impl.h b/content/browser/picture_in_picture/picture_in_picture_service_impl.h
index fc07b31..5ab6cee 100644
--- a/content/browser/picture_in_picture/picture_in_picture_service_impl.h
+++ b/content/browser/picture_in_picture/picture_in_picture_service_impl.h
@@ -41,7 +41,7 @@
   void StartSession(
       uint32_t player_id,
       mojo::PendingAssociatedRemote<media::mojom::MediaPlayer> player_remote,
-      const absl::optional<viz::SurfaceId>& surface_id,
+      const viz::SurfaceId& surface_id,
       const gfx::Size& natural_size,
       bool show_play_pause_button,
       mojo::PendingRemote<blink::mojom::PictureInPictureSessionObserver>,
diff --git a/content/browser/picture_in_picture/picture_in_picture_service_impl_unittest.cc b/content/browser/picture_in_picture/picture_in_picture_service_impl_unittest.cc
index bc57b4bb..b6fdb284 100644
--- a/content/browser/picture_in_picture/picture_in_picture_service_impl_unittest.cc
+++ b/content/browser/picture_in_picture/picture_in_picture_service_impl_unittest.cc
@@ -285,46 +285,4 @@
   EXPECT_EQ(gfx::Size(), window_size);
 }
 
-// The |surface_id| is an optional parameter in the StartSession() call but
-// needs to be non-null in order to create a session at the moment. The creation
-// will early return if that condition isn't satisfied, failing to create the
-// session.
-TEST_F(PictureInPictureServiceImplTest, EnterPictureInPicture_NoSurfaceId) {
-  const int kPlayerVideoOnlyId = 30;
-  const PictureInPictureWindowControllerImpl* controller =
-      PictureInPictureWindowControllerImpl::GetOrCreateForWebContents(
-          contents());
-
-  ASSERT_TRUE(controller);
-  EXPECT_FALSE(controller->active_session_for_testing());
-
-  mojo::PendingRemote<blink::mojom::PictureInPictureSessionObserver>
-      observer_remote;
-
-  EXPECT_CALL(delegate(), EnterPictureInPicture(_, _, _)).Times(0);
-
-  mojo::Remote<blink::mojom::PictureInPictureSession> session_remote;
-  gfx::Size window_size;
-
-  service().StartSession(
-      kPlayerVideoOnlyId, BindMediaPlayerReceiverAndPassRemote(), absl::nullopt,
-      gfx::Size(42, 42), true /* show_play_pause_button */,
-      std::move(observer_remote),
-      base::BindLambdaForTesting(
-          [&](mojo::PendingRemote<blink::mojom::PictureInPictureSession> remote,
-              const gfx::Size& b) {
-            if (remote.is_valid())
-              session_remote.Bind(std::move(remote));
-            window_size = b;
-          }));
-
-  EXPECT_FALSE(controller->active_session_for_testing());
-
-  // The |session_remote| won't be bound because the |remote| received in the
-  // StartSessionCallback will be invalid due to PictureInPictureSession not
-  // ever being created (meaning the the receiver won't be bound either).
-  EXPECT_FALSE(session_remote);
-  EXPECT_EQ(gfx::Size(), window_size);
-}
-
 }  // namespace content
diff --git a/content/browser/picture_in_picture/picture_in_picture_session.cc b/content/browser/picture_in_picture/picture_in_picture_session.cc
index 3d2efee4..6a6e73c 100644
--- a/content/browser/picture_in_picture/picture_in_picture_session.cc
+++ b/content/browser/picture_in_picture/picture_in_picture_session.cc
@@ -26,6 +26,8 @@
       observer_(std::move(observer)) {
   receiver_.set_disconnect_handler(base::BindOnce(
       &PictureInPictureSession::OnConnectionError, base::Unretained(this)));
+  media_player_remote_.set_disconnect_handler(base::BindOnce(
+      &PictureInPictureSession::OnPlayerGone, base::Unretained(this)));
 }
 
 PictureInPictureSession::~PictureInPictureSession() {
@@ -39,7 +41,7 @@
 void PictureInPictureSession::Update(
     uint32_t player_id,
     mojo::PendingAssociatedRemote<media::mojom::MediaPlayer> player_remote,
-    const absl::optional<viz::SurfaceId>& surface_id,
+    const viz::SurfaceId& surface_id,
     const gfx::Size& natural_size,
     bool show_play_pause_button) {
   player_id_ = MediaPlayerId(
@@ -47,11 +49,18 @@
 
   media_player_remote_.reset();
   media_player_remote_.Bind(std::move(player_remote));
+  media_player_remote_.set_disconnect_handler(base::BindOnce(
+      &PictureInPictureSession::OnPlayerGone, base::Unretained(this)));
 
-  GetController().EmbedSurface(surface_id.value(), natural_size);
+  GetController().EmbedSurface(surface_id, natural_size);
   GetController().SetShowPlayPauseButton(show_play_pause_button);
 }
 
+void PictureInPictureSession::OnPlayerGone() {
+  player_id_.reset();
+  GetController().SetShowPlayPauseButton(false);
+}
+
 void PictureInPictureSession::NotifyWindowResized(const gfx::Size& size) {
   observer_->OnWindowSizeChanged(size);
 }
diff --git a/content/browser/picture_in_picture/picture_in_picture_session.h b/content/browser/picture_in_picture/picture_in_picture_session.h
index 0f13721..351d390 100644
--- a/content/browser/picture_in_picture/picture_in_picture_session.h
+++ b/content/browser/picture_in_picture/picture_in_picture_session.h
@@ -45,7 +45,7 @@
   void Update(
       uint32_t player_id,
       mojo::PendingAssociatedRemote<media::mojom::MediaPlayer> player_remote,
-      const absl::optional<viz::SurfaceId>& surface_id,
+      const viz::SurfaceId& surface_id,
       const gfx::Size& natural_size,
       bool show_play_pause_button) final;
 
@@ -55,7 +55,7 @@
   mojo::AssociatedRemote<media::mojom::MediaPlayer>& GetMediaPlayerRemote();
 
   // Returns the player that is currently in Picture-in-Picture.
-  MediaPlayerId player_id() const { return player_id_; }
+  const absl::optional<MediaPlayerId>& player_id() const { return player_id_; }
 
   // Stops the session without closing the window. It will prevent the session
   // to later trying to shutdown when the PictureInPictureWindowController is
@@ -80,6 +80,10 @@
   // Called when the |receiver_| hits a connection error.
   void OnConnectionError();
 
+  // Called when |media_player_remote_| is disconnected, typically when the
+  // media player is destroyed while the session is still active.
+  void OnPlayerGone();
+
   // Returns the WebContentsImpl associated with this Picture-in-Picture
   // session. It relies on the WebContents associated with the |service_|.
   WebContentsImpl* GetWebContentsImpl();
@@ -95,7 +99,7 @@
 
   mojo::Receiver<blink::mojom::PictureInPictureSession> receiver_;
 
-  MediaPlayerId player_id_;
+  absl::optional<MediaPlayerId> player_id_;
 
   // Whether the session is currently stopping. The final stop of stopping is to
   // be destroyed so once its set to true it will never be set back to false and
diff --git a/content/browser/picture_in_picture/picture_in_picture_window_controller_impl.cc b/content/browser/picture_in_picture/picture_in_picture_window_controller_impl.cc
index 080718e..2f455f98c 100644
--- a/content/browser/picture_in_picture/picture_in_picture_window_controller_impl.cc
+++ b/content/browser/picture_in_picture/picture_in_picture_window_controller_impl.cc
@@ -148,11 +148,11 @@
 }
 
 bool PictureInPictureWindowControllerImpl::IsPlayerActive() {
-  if (!active_session_)
+  if (!active_session_ || !active_session_->player_id().has_value())
     return false;
 
   return GetWebContentsImpl()->media_web_contents_observer()->IsPlayerActive(
-      active_session_->player_id());
+      active_session_->player_id().value());
 }
 
 WebContents* PictureInPictureWindowControllerImpl::GetWebContents() {
diff --git a/content/browser/portal/portal_browsertest.cc b/content/browser/portal/portal_browsertest.cc
index 3027eab..4b95e50 100644
--- a/content/browser/portal/portal_browsertest.cc
+++ b/content/browser/portal/portal_browsertest.cc
@@ -2117,7 +2117,13 @@
 // Ensure portal activations respect navigation precedence. If there is an
 // ongoing browser initiated navigation, then a portal activation without user
 // activation cannot proceed.
-IN_PROC_BROWSER_TEST_F(PortalBrowserTest, NavigationPrecedence) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_NavigationPrecedence DISABLED_NavigationPrecedence
+#else
+#define MAYBE_NavigationPrecedence NavigationPrecedence
+#endif
+IN_PROC_BROWSER_TEST_F(PortalBrowserTest, MAYBE_NavigationPrecedence) {
   GURL main_url1(embedded_test_server()->GetURL("portal.test", "/title1.html"));
   GURL main_url2(embedded_test_server()->GetURL("portal.test", "/title2.html"));
   ASSERT_TRUE(NavigateToURL(shell(), main_url1));
diff --git a/content/browser/renderer_host/back_forward_cache_metrics_browsertest.cc b/content/browser/renderer_host/back_forward_cache_metrics_browsertest.cc
index 4b45f02..4794d9f 100644
--- a/content/browser/renderer_host/back_forward_cache_metrics_browsertest.cc
+++ b/content/browser/renderer_host/back_forward_cache_metrics_browsertest.cc
@@ -110,7 +110,13 @@
   std::unique_ptr<device::ScopedGeolocationOverrider> geolocation_override_;
 };
 
-IN_PROC_BROWSER_TEST_F(BackForwardCacheMetricsBrowserTest, UKM) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_UKM DISABLED_UKM
+#else
+#define MAYBE_UKM UKM
+#endif
+IN_PROC_BROWSER_TEST_F(BackForwardCacheMetricsBrowserTest, MAYBE_UKM) {
   ukm::TestAutoSetUkmRecorder recorder;
 
   const GURL url1(
@@ -482,8 +488,14 @@
       testing::ElementsAre(FeatureUsage{id3, 1 << kPageShowFeature, 0, 0}));
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_Features_SameOriginSubframes DISABLED_Features_SameOriginSubframes
+#else
+#define MAYBE_Features_SameOriginSubframes Features_SameOriginSubframes
+#endif
 IN_PROC_BROWSER_TEST_F(BackForwardCacheMetricsBrowserTest,
-                       Features_SameOriginSubframes) {
+                       MAYBE_Features_SameOriginSubframes) {
   ukm::TestAutoSetUkmRecorder recorder;
 
   const GURL url1(embedded_test_server()->GetURL(
@@ -539,8 +551,15 @@
       testing::ElementsAre(FeatureUsage{id4, 0, 1 << kPageShowFeature, 0}));
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_Features_CrossOriginSubframes \
+  DISABLED_Features_CrossOriginSubframes
+#else
+#define MAYBE_Features_CrossOriginSubframes Features_CrossOriginSubframes
+#endif
 IN_PROC_BROWSER_TEST_F(BackForwardCacheMetricsBrowserTest,
-                       Features_CrossOriginSubframes) {
+                       MAYBE_Features_CrossOriginSubframes) {
   ukm::TestAutoSetUkmRecorder recorder;
 
   const GURL url1(embedded_test_server()->GetURL(
diff --git a/content/browser/renderer_host/navigation_request_browsertest.cc b/content/browser/renderer_host/navigation_request_browsertest.cc
index 627971a..e1cce54 100644
--- a/content/browser/renderer_host/navigation_request_browsertest.cc
+++ b/content/browser/renderer_host/navigation_request_browsertest.cc
@@ -12,6 +12,7 @@
 #include "base/strings/stringprintf.h"
 #include "base/test/bind.h"
 #include "base/test/metrics/histogram_tester.h"
+#include "build/build_config.h"
 #include "content/browser/renderer_host/debug_urls.h"
 #include "content/browser/renderer_host/navigation_controller_impl.h"
 #include "content/browser/renderer_host/navigation_request.h"
@@ -2974,8 +2975,16 @@
   EXPECT_THAT(offsets_, testing::ElementsAre(1, 0, 1, 1, -1, -1, 1));
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_NavigationEntryOffsetsForSubframes \
+  DISABLED_NavigationEntryOffsetsForSubframes
+#else
+#define MAYBE_NavigationEntryOffsetsForSubframes \
+  NavigationEntryOffsetsForSubframes
+#endif
 IN_PROC_BROWSER_TEST_F(NavigationRequestBackForwardBrowserTest,
-                       NavigationEntryOffsetsForSubframes) {
+                       MAYBE_NavigationEntryOffsetsForSubframes) {
   const GURL url1(embedded_test_server()->GetURL("/title1.html"));
   const GURL url1_fragment1(
       embedded_test_server()->GetURL("/title1.html#id_1"));
diff --git a/content/browser/renderer_host/page_impl_browsertest.cc b/content/browser/renderer_host/page_impl_browsertest.cc
index 7e0f8dd..d4c2abd 100644
--- a/content/browser/renderer_host/page_impl_browsertest.cc
+++ b/content/browser/renderer_host/page_impl_browsertest.cc
@@ -6,6 +6,7 @@
 
 #include "base/command_line.h"
 #include "base/test/scoped_feature_list.h"
+#include "build/build_config.h"
 #include "content/browser/renderer_host/frame_tree.h"
 #include "content/browser/renderer_host/frame_tree_node.h"
 #include "content/browser/renderer_host/navigation_request.h"
@@ -164,7 +165,16 @@
 }
 
 // Test that a new Page object is created for a same-site same-RFH navigation.
-IN_PROC_BROWSER_TEST_F(PageImplTest, SameSiteSameRenderFrameHostNavigation) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_SameSiteSameRenderFrameHostNavigation \
+  DISABLED_SameSiteSameRenderFrameHostNavigation
+#else
+#define MAYBE_SameSiteSameRenderFrameHostNavigation \
+  SameSiteSameRenderFrameHostNavigation
+#endif
+IN_PROC_BROWSER_TEST_F(PageImplTest,
+                       MAYBE_SameSiteSameRenderFrameHostNavigation) {
   ASSERT_TRUE(embedded_test_server()->Start());
   GURL url_a1(embedded_test_server()->GetURL("a.com", "/title1.html"));
   GURL url_a2(embedded_test_server()->GetURL("a.com", "/title2.html"));
diff --git a/content/browser/renderer_host/render_document_host_user_data_browsertest.cc b/content/browser/renderer_host/render_document_host_user_data_browsertest.cc
index f501247..e731ef9 100644
--- a/content/browser/renderer_host/render_document_host_user_data_browsertest.cc
+++ b/content/browser/renderer_host/render_document_host_user_data_browsertest.cc
@@ -8,6 +8,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/test/bind.h"
 #include "base/test/scoped_feature_list.h"
+#include "build/build_config.h"
 #include "content/browser/renderer_host/frame_tree_node.h"
 #include "content/browser/renderer_host/navigation_request.h"
 #include "content/browser/renderer_host/render_frame_host_impl.h"
@@ -719,7 +720,14 @@
 
 // Tests that RenderDocumentHostUserData object is cleared on performing same
 // site navigation.
-IN_PROC_BROWSER_TEST_F(RenderDocumentHostUserDataTest, SameSiteNavigation) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_SameSiteNavigation DISABLED_SameSiteNavigation
+#else
+#define MAYBE_SameSiteNavigation SameSiteNavigation
+#endif
+IN_PROC_BROWSER_TEST_F(RenderDocumentHostUserDataTest,
+                       MAYBE_SameSiteNavigation) {
   ASSERT_TRUE(embedded_test_server()->Start());
   GURL url_a1(embedded_test_server()->GetURL("a.com", "/title1.html"));
   GURL url_a2(embedded_test_server()->GetURL("a.com", "/title2.html"));
diff --git a/content/browser/session_history_browsertest.cc b/content/browser/session_history_browsertest.cc
index 3b4c78a..2a1abe3 100644
--- a/content/browser/session_history_browsertest.cc
+++ b/content/browser/session_history_browsertest.cc
@@ -8,6 +8,7 @@
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "build/build_config.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_service.h"
@@ -310,7 +311,13 @@
 // Test that back/forward preserves POST data and document state when navigating
 // across frames (ie, from frame -> nonframe).
 // Hangs, see http://crbug.com/45058.
-IN_PROC_BROWSER_TEST_F(SessionHistoryTest, CrossFrameFormBackForward) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_CrossFrameFormBackForward DISABLED_CrossFrameFormBackForward
+#else
+#define MAYBE_CrossFrameFormBackForward CrossFrameFormBackForward
+#endif
+IN_PROC_BROWSER_TEST_F(SessionHistoryTest, MAYBE_CrossFrameFormBackForward) {
   ASSERT_FALSE(CanGoBack());
 
   GURL frames(GetURL("frames.html"));
diff --git a/content/browser/text_fragment_browsertest.cc b/content/browser/text_fragment_browsertest.cc
index f010e8e..fe29ba8 100644
--- a/content/browser/text_fragment_browsertest.cc
+++ b/content/browser/text_fragment_browsertest.cc
@@ -4,6 +4,7 @@
 
 #include "base/test/scoped_feature_list.h"
 #include "base/test/test_timeouts.h"
+#include "build/build_config.h"
 #include "content/browser/renderer_host/frame_tree_node.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ -264,8 +265,16 @@
   }
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_DisabledOnScriptHistoryNavigation \
+  DISABLED_DisabledOnScriptHistoryNavigation
+#else
+#define MAYBE_DisabledOnScriptHistoryNavigation \
+  DisabledOnScriptHistoryNavigation
+#endif
 IN_PROC_BROWSER_TEST_F(TextFragmentAnchorBrowserTest,
-                       DisabledOnScriptHistoryNavigation) {
+                       MAYBE_DisabledOnScriptHistoryNavigation) {
   ASSERT_TRUE(embedded_test_server()->Start());
   GURL target_text_url(embedded_test_server()->GetURL(
       "/scrollable_page_with_content.html#:~:text=text"));
@@ -350,8 +359,17 @@
 // initial landing on the page is via a non-user-activated script navigation.
 // This ensure we're not inappropriately blocking a text-fragment based on the
 // state of the initial document load.
-IN_PROC_BROWSER_TEST_F(TextFragmentAnchorBrowserTest,
-                       SameDocumentBrowserNavigationOnScriptNavigatedDocument) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_SameDocumentBrowserNavigationOnScriptNavigatedDocument \
+  DISABLED_SameDocumentBrowserNavigationOnScriptNavigatedDocument
+#else
+#define MAYBE_SameDocumentBrowserNavigationOnScriptNavigatedDocument \
+  SameDocumentBrowserNavigationOnScriptNavigatedDocument
+#endif
+IN_PROC_BROWSER_TEST_F(
+    TextFragmentAnchorBrowserTest,
+    MAYBE_SameDocumentBrowserNavigationOnScriptNavigatedDocument) {
   ASSERT_TRUE(embedded_test_server()->Start());
   WebContents* main_contents = shell()->web_contents();
   RenderFrameSubmissionObserver frame_observer(main_contents);
diff --git a/content/browser/tracing/startup_tracing_browsertest.cc b/content/browser/tracing/startup_tracing_browsertest.cc
index e02f2840..6266c43 100644
--- a/content/browser/tracing/startup_tracing_browsertest.cc
+++ b/content/browser/tracing/startup_tracing_browsertest.cc
@@ -261,6 +261,11 @@
   }
 
   static void CheckOutput(base::FilePath path, OutputType output_type) {
+#if defined(OS_LINUX) && defined(THREAD_SANITIZER)
+    // Skip checks because the thread sanitizer is often too slow to flush trace
+    // data correctly within the timeouts. We still run the tests on TSAN to
+    // catch general threading issues.
+#else // !(defined(OS_LINUX) && defined(THREAD_SANITIZER))
     std::string trace;
     base::ScopedAllowBlockingForTesting allow_blocking;
     ASSERT_TRUE(base::ReadFileToString(path, &trace))
@@ -274,6 +279,7 @@
     // as a substring.
     EXPECT_TRUE(trace.find("StartupTracingController::Start") !=
                 std::string::npos);
+#endif // !(defined(OS_LINUX) && defined(THREAD_SANITIZER))
   }
 
   void Wait() {
@@ -311,8 +317,12 @@
             OutputLocation::kDirectoryWithBasenameUpdatedBeforeStop)));
 
 // TODO(crbug.com/1197278): Failing on Windows 7 debug builds.
-// TODO(crbug.com/1213441): Failing on Linux and Android.
-IN_PROC_BROWSER_TEST_P(StartupTracingTest, DISABLED_TestEnableTracing) {
+#if (defined(OS_WIN) && DCHECK_IS_ON())
+#define MAYBE_TestEnableTracing DISABLED_TestEnableTracing
+#else
+#define MAYBE_TestEnableTracing TestEnableTracing
+#endif
+IN_PROC_BROWSER_TEST_P(StartupTracingTest, MAYBE_TestEnableTracing) {
   EXPECT_TRUE(NavigateToURL(shell(), GetTestUrl("", "title1.html")));
 
   if (GetOutputLocation() ==
@@ -337,9 +347,7 @@
         testing::Values(OutputLocation::kDirectoryWithDefaultBasename)));
 
 // TODO(crbug.com/1197278): Failing on Windows 7 debug builds.
-// TODO(crbug.com/1211717): Failing on Linux TSAN builds.
-#if (defined(OS_WIN) && DCHECK_IS_ON()) || \
-    (defined(OS_LINUX) && defined(THREAD_SANITIZER))
+#if defined(OS_WIN) && DCHECK_IS_ON()
 #define MAYBE_StopOnUIThread DISABLED_StopOnUIThread
 #else
 #define MAYBE_StopOnUIThread StopOnUIThread
diff --git a/content/browser/web_package/prefetched_signed_exchange_cache.cc b/content/browser/web_package/prefetched_signed_exchange_cache.cc
index f6808d2..0708a52f 100644
--- a/content/browser/web_package/prefetched_signed_exchange_cache.cc
+++ b/content/browser/web_package/prefetched_signed_exchange_cache.cc
@@ -7,6 +7,7 @@
 #include "base/base64.h"
 #include "base/feature_list.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/notreached.h"
 #include "base/strings/string_util.h"
 #include "components/link_header_util/link_header_util.h"
 #include "content/browser/loader/cross_origin_read_blocking_checker.h"
@@ -29,6 +30,7 @@
 #include "services/network/public/cpp/constants.h"
 #include "services/network/public/cpp/cors/cors.h"
 #include "services/network/public/cpp/features.h"
+#include "services/network/public/cpp/initiator_lock_compatibility.h"
 #include "services/network/public/cpp/shared_url_loader_factory.h"
 #include "services/network/public/cpp/url_loader_completion_status.h"
 #include "services/network/public/cpp/wrapper_shared_url_loader_factory.h"
@@ -57,6 +59,47 @@
   response_head->load_timing.request_start = now_ticks;
 }
 
+bool IsValidRequestInitiator(const network::ResourceRequest& request,
+                             const url::Origin& request_initiator_origin_lock) {
+  // TODO(lukasza): Deduplicate the check below by reusing parts of
+  // CorsURLLoaderFactory::IsValidRequest (potentially also reusing the parts
+  // that validate non-initiator-related parts of a ResourceRequest)..
+  network::InitiatorLockCompatibility initiator_lock_compatibility =
+      network::VerifyRequestInitiatorLock(request_initiator_origin_lock,
+                                          request.request_initiator);
+  switch (initiator_lock_compatibility) {
+    case network::InitiatorLockCompatibility::kBrowserProcess:
+    case network::InitiatorLockCompatibility::kAllowedRequestInitiatorForPlugin:
+      // kBrowserProcess and kAllowedRequestInitiatorForPlugin cannot happen
+      // outside of NetworkService.
+      NOTREACHED();
+      return false;
+
+    case network::InitiatorLockCompatibility::kNoLock:
+    case network::InitiatorLockCompatibility::kNoInitiator:
+      // Only browser-initiated navigations can specify no initiator and we only
+      // expect subresource requests (i.e. non-navigations) to go through
+      // SubresourceSignedExchangeURLLoaderFactory::CreateLoaderAndStart.
+      NOTREACHED();
+      return false;
+
+    case network::InitiatorLockCompatibility::kCompatibleLock:
+      return true;
+
+    case network::InitiatorLockCompatibility::kIncorrectLock:
+      // This branch indicates that either 1) the CreateLoaderAndStart IPC was
+      // forged by a malicious/compromised renderer process or 2) there are
+      // renderer-side bugs.
+      NOTREACHED();
+      return false;
+  }
+
+  // Failing safely for an unrecognied `network::InitiatorLockCompatibility`
+  // enum value.
+  NOTREACHED();
+  return false;
+}
+
 // A utility subclass of MojoBlobReader::Delegate that calls the passed callback
 // in OnComplete().
 class MojoBlobReaderDelegate : public storage::MojoBlobReader::Delegate {
@@ -143,6 +186,14 @@
         completion_status_(completion_status),
         client_(std::move(client)) {
     DCHECK(response_->headers);
+
+    // The `request.request_initiator` is assumed to be present and trustworthy
+    // - it comes either from:
+    // 1, The trustworthy navigation stack (via
+    //    PrefetchedNavigationLoaderInterceptor::StartInnerResponse).
+    // or
+    // 2. SubresourceSignedExchangeURLLoaderFactory::CreateLoaderAndStart which
+    //    validates the untrustworthy IPC payload as its very first action.
     DCHECK(request.request_initiator);
 
     // Keep the SSLInfo only when the request is for main frame main resource,
@@ -178,6 +229,11 @@
       }
     }
 
+    // TODO(https://crbug.com/1217825): Stop passing
+    // `request_initiator_origin_lock` below (it is only required for the
+    // deprecated GetTrustworthyInitiator function used by
+    // CrossOriginReadBlockingChecker + the request_initiator is already
+    // trustworthy as documented in a comment above).
     corb_checker_ = std::make_unique<CrossOriginReadBlockingChecker>(
         request, *response_, request_initiator_origin_lock, *blob_data_handle_,
         base::BindOnce(
@@ -357,6 +413,21 @@
       mojo::PendingRemote<network::mojom::URLLoaderClient> client,
       const net::MutableNetworkTrafficAnnotationTag& traffic_annotation)
       override {
+    if (!IsValidRequestInitiator(request, request_initiator_origin_lock_)) {
+      NOTREACHED();
+      network::debug::ScopedResourceRequestCrashKeys request_crash_keys(
+          request);
+      network::debug::ScopedRequestInitiatorOriginLockCrashKey lock_crash_keys(
+          request_initiator_origin_lock_);
+      mojo::ReportBadMessage(
+          "SubresourceSignedExchangeURLLoaderFactory: "
+          "lock VS initiator mismatch");
+      mojo::Remote<network::mojom::URLLoaderClient>(std::move(client))
+          ->OnComplete(
+              network::URLLoaderCompletionStatus(net::ERR_INVALID_ARGUMENT));
+      return;
+    }
+
     DCHECK_EQ(request.url, entry_->inner_url());
     mojo::MakeSelfOwnedReceiver(
         std::make_unique<InnerResponseURLLoader>(
@@ -458,10 +529,27 @@
       const network::ResourceRequest& resource_request,
       mojo::PendingReceiver<network::mojom::URLLoader> receiver,
       mojo::PendingRemote<network::mojom::URLLoaderClient> client) {
+    // `resource_request.request_initiator()` is trustworthy, because:
+    // 1) StartInnerResponse is only used from the navigation stack (via
+    //    MaybeCreateLoader override of NavigationLoaderInterceptor)
+    // 2) navigation initiator is validated in IPCs from the renderer (e.g. see
+    //    VerifyBeginNavigationCommonParams).
+    // Note that `request_initiator_origin_lock` below might be different from
+    // `url::Origin::Create(exchange_->inner_url())` - for example in the
+    // All/SignedExchangeRequestHandlerBrowserTest.Simple/3 testcase.
+    CHECK_EQ(network::mojom::RequestMode::kNavigate, resource_request.mode);
+
+    // PrefetchedNavigationLoaderInterceptor is only created for
+    // renderer-initiated navigations - therefore `request_initiator` is
+    // guaranteed to have a value here.
+    CHECK(resource_request.request_initiator.has_value());
+    url::Origin request_initiator_origin_lock =
+        resource_request.request_initiator.value();
+
     mojo::MakeSelfOwnedReceiver(
         std::make_unique<InnerResponseURLLoader>(
             resource_request, exchange_->inner_response().Clone(),
-            url::Origin::Create(exchange_->inner_url()),
+            request_initiator_origin_lock,
             std::make_unique<const storage::BlobDataHandle>(
                 *exchange_->blob_data_handle()),
             *exchange_->completion_status(), std::move(client),
@@ -470,7 +558,7 @@
   }
 
   State state_ = State::kInitial;
-  std::unique_ptr<const PrefetchedSignedExchangeCacheEntry> exchange_;
+  const std::unique_ptr<const PrefetchedSignedExchangeCacheEntry> exchange_;
   std::vector<mojom::PrefetchedSignedExchangeInfoPtr> info_list_;
 
   base::WeakPtrFactory<PrefetchedNavigationLoaderInterceptor> weak_factory_{
diff --git a/content/browser/web_package/signed_exchange_subresource_prefetch_browsertest.cc b/content/browser/web_package/signed_exchange_subresource_prefetch_browsertest.cc
index 22fd5d4..27d3cc9 100644
--- a/content/browser/web_package/signed_exchange_subresource_prefetch_browsertest.cc
+++ b/content/browser/web_package/signed_exchange_subresource_prefetch_browsertest.cc
@@ -426,8 +426,16 @@
   DISALLOW_COPY_AND_ASSIGN(SignedExchangePrefetchBrowserTest);
 };
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_PrefetchMainResourceSXG_SameOrigin \
+  DISABLED_PrefetchMainResourceSXG_SameOrigin
+#else
+#define MAYBE_PrefetchMainResourceSXG_SameOrigin \
+  PrefetchMainResourceSXG_SameOrigin
+#endif
 IN_PROC_BROWSER_TEST_P(SignedExchangePrefetchBrowserTest,
-                       PrefetchMainResourceSXG_SameOrigin) {
+                       MAYBE_PrefetchMainResourceSXG_SameOrigin) {
   RunPrefetchMainResourceSXGTest("example.com" /* prefetch_page_hostname */,
                                  "/prefetch.html" /* prefetch_page_path */,
                                  "example.com" /* sxg_hostname */,
@@ -436,8 +444,16 @@
                                  "/target.html" /* inner_url_path */);
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_PrefetchMainResourceSXG_CrossOrigin \
+  DISABLED_PrefetchMainResourceSXG_CrossOrigin
+#else
+#define MAYBE_PrefetchMainResourceSXG_CrossOrigin \
+  PrefetchMainResourceSXG_CrossOrigin
+#endif
 IN_PROC_BROWSER_TEST_P(SignedExchangePrefetchBrowserTest,
-                       PrefetchMainResourceSXG_CrossOrigin) {
+                       MAYBE_PrefetchMainResourceSXG_CrossOrigin) {
   RunPrefetchMainResourceSXGTest(
       "aggregator.example.com" /* prefetch_page_hostname */,
       "/prefetch.html" /* prefetch_page_path */,
@@ -447,8 +463,15 @@
       "/target.html" /* inner_url_path */);
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_PrefetchMainResourceSXG_SameURL \
+  DISABLED_PrefetchMainResourceSXG_SameURL
+#else
+#define MAYBE_PrefetchMainResourceSXG_SameURL PrefetchMainResourceSXG_SameURL
+#endif
 IN_PROC_BROWSER_TEST_P(SignedExchangePrefetchBrowserTest,
-                       PrefetchMainResourceSXG_SameURL) {
+                       MAYBE_PrefetchMainResourceSXG_SameURL) {
   RunPrefetchMainResourceSXGTest("example.com" /* prefetch_page_hostname */,
                                  "/prefetch.html" /* prefetch_page_path */,
                                  "example.com" /* sxg_hostname */,
@@ -765,8 +788,16 @@
 // SignedExchangePrefetchCacheForNavigations when
 // |sxg_subresource_prefetch_enabled| is false to check the behavior of
 // SignedExchangePrefetchCacheForNavigations feature.
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_PrefetchAlternativeSubresourceSXG \
+  DISABLED_PrefetchAlternativeSubresourceSXG
+#else
+#define MAYBE_PrefetchAlternativeSubresourceSXG \
+  PrefetchAlternativeSubresourceSXG
+#endif
 IN_PROC_BROWSER_TEST_P(SignedExchangePrefetchBrowserTest,
-                       PrefetchAlternativeSubresourceSXG) {
+                       MAYBE_PrefetchAlternativeSubresourceSXG) {
   const char* prefetch_page_path = "/prefetch.html";
   const char* page_sxg_path = "/target.sxg";
   const char* page_inner_url_path = "/target.html";
@@ -2189,7 +2220,8 @@
     requests_list_string += base::StringPrintf(
         "new Request('%s', {credentials: '%s'})", data_url.spec().c_str(),
         kTestCases[i].request_credentials);
-    const net::SHA256HashValue data_header_integrity = {{0x02 + i}};
+    const net::SHA256HashValue data_header_integrity = {
+        {static_cast<uint8_t>(0x02 + i)}};
 
     target_sxg_outer_link_header +=
         CreateAlternateLinkHeader(data_sxg_url, data_url);
diff --git a/content/browser/web_package/web_bundle_browsertest.cc b/content/browser/web_package/web_bundle_browsertest.cc
index 7fb2e50..a45eb5c 100644
--- a/content/browser/web_package/web_bundle_browsertest.cc
+++ b/content/browser/web_package/web_bundle_browsertest.cc
@@ -1730,7 +1730,13 @@
                           &RunSameDocumentNavigationTest);
 }
 
-IN_PROC_BROWSER_TEST_P(WebBundleTrustableFileBrowserTest, IframeNavigation) {
+#if defined(OS_ANDROID)
+#define MAYBE_IframeNavigation DISABLED_IframeNavigation
+#else
+#define MAYBE_IframeNavigation IframeNavigation
+#endif
+IN_PROC_BROWSER_TEST_P(WebBundleTrustableFileBrowserTest,
+                       MAYBE_IframeNavigation) {
   RunSharedNavigationTest(&SetUpIframeNavigationTest, &RunIframeNavigationTest);
 }
 
@@ -1746,8 +1752,13 @@
                           &RunIframeParentInitiatedOutOfBundleNavigationTest);
 }
 
+#if defined(OS_ANDROID)
+#define MAYBE_IframeSameDocumentNavigation DISABLED_IframeSameDocumentNavigation
+#else
+#define MAYBE_IframeSameDocumentNavigation IframeSameDocumentNavigation
+#endif
 IN_PROC_BROWSER_TEST_P(WebBundleTrustableFileBrowserTest,
-                       IframeSameDocumentNavigation) {
+                       MAYBE_IframeSameDocumentNavigation) {
   RunSharedNavigationTest(&SetUpIframeNavigationTest,
                           &RunIframeSameDocumentNavigationTest);
 }
@@ -2569,7 +2580,13 @@
                           &RunSameDocumentNavigationTest);
 }
 
-IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest, IframeNavigation) {
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_IframeNavigation DISABLED_IframeNavigation
+#else
+#define MAYBE_IframeNavigation IframeNavigation
+#endif
+IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest, MAYBE_IframeNavigation) {
   RunSharedNavigationTest(&SetUpIframeNavigationTest, &RunIframeNavigationTest);
 }
 
@@ -2585,8 +2602,14 @@
                           &RunIframeParentInitiatedOutOfBundleNavigationTest);
 }
 
+// https://crbug.com/1219373 fails with BFCache field trial testing config.
+#if defined(OS_ANDROID)
+#define MAYBE_IframeSameDocumentNavigation DISABLED_IframeSameDocumentNavigation
+#else
+#define MAYBE_IframeSameDocumentNavigation IframeSameDocumentNavigation
+#endif
 IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest,
-                       IframeSameDocumentNavigation) {
+                       MAYBE_IframeSameDocumentNavigation) {
   RunSharedNavigationTest(&SetUpIframeNavigationTest,
                           &RunIframeSameDocumentNavigationTest);
 }
@@ -2657,8 +2680,15 @@
                 "/web_bundle/path_test/in_scope/page.html"));
 }
 
+#if defined(OS_ANDROID)
+#define MAYBE_HistoryNavigationError_UnexpectedContentType \
+  DISABLED_HistoryNavigationError_UnexpectedContentType
+#else
+#define MAYBE_HistoryNavigationError_UnexpectedContentType \
+  HistoryNavigationError_UnexpectedContentType
+#endif
 IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest,
-                       HistoryNavigationError_UnexpectedContentType) {
+                       MAYBE_HistoryNavigationError_UnexpectedContentType) {
   const std::string wbn_path = "/web_bundle/test.wbn";
   const std::string primary_url_path = "/web_bundle/test.html";
   RegisterRequestHandler(wbn_path);
@@ -2686,8 +2716,15 @@
   HistoryBackAndWaitUntilConsoleError("Unexpected content type.");
 }
 
+#if defined(OS_ANDROID)
+#define MAYBE_HistoryNavigationError_MissingNosniff \
+  DISABLED_HistoryNavigationError_MissingNosniff
+#else
+#define MAYBE_HistoryNavigationError_MissingNosniff \
+  HistoryNavigationError_MissingNosniff
+#endif
 IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest,
-                       HistoryNavigationError_MissingNosniff) {
+                       MAYBE_HistoryNavigationError_MissingNosniff) {
   const std::string wbn_path = "/web_bundle/test.wbn";
   const std::string primary_url_path = "/web_bundle/test.html";
   RegisterRequestHandler(wbn_path);
@@ -2716,8 +2753,15 @@
       "header.");
 }
 
+#if defined(OS_ANDROID)
+#define MAYBE_HistoryNavigationError_UnexpectedRedirect \
+  DISABLED_HistoryNavigationError_UnexpectedRedirect
+#else
+#define MAYBE_HistoryNavigationError_UnexpectedRedirect \
+  HistoryNavigationError_UnexpectedRedirect
+#endif
 IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest,
-                       HistoryNavigationError_UnexpectedRedirect) {
+                       MAYBE_HistoryNavigationError_UnexpectedRedirect) {
   const std::string wbn_path = "/web_bundle/test.wbn";
   const std::string primary_url_path = "/web_bundle/test.html";
   RegisterRequestHandler(wbn_path);
@@ -2745,8 +2789,15 @@
   HistoryBackAndWaitUntilConsoleError("Unexpected redirect.");
 }
 
+#if defined(OS_ANDROID)
+#define MAYBE_HistoryNavigationError_ReadMetadataFailure \
+  DISABLED_HistoryNavigationError_ReadMetadataFailure
+#else
+#define MAYBE_HistoryNavigationError_ReadMetadataFailure \
+  HistoryNavigationError_ReadMetadataFailure
+#endif
 IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest,
-                       HistoryNavigationError_ReadMetadataFailure) {
+                       MAYBE_HistoryNavigationError_ReadMetadataFailure) {
   const std::string wbn_path = "/web_bundle/test.wbn";
   const std::string primary_url_path = "/web_bundle/test.html";
   RegisterRequestHandler(wbn_path);
@@ -2767,8 +2818,15 @@
       "Failed to read metadata of Web Bundle file: Wrong magic bytes.");
 }
 
+#if defined(OS_ANDROID)
+#define MAYBE_HistoryNavigationError_ExpectedUrlNotFound \
+  DISABLED_HistoryNavigationError_ExpectedUrlNotFound
+#else
+#define MAYBE_HistoryNavigationError_ExpectedUrlNotFound \
+  HistoryNavigationError_ExpectedUrlNotFound
+#endif
 IN_PROC_BROWSER_TEST_F(WebBundleNetworkBrowserTest,
-                       HistoryNavigationError_ExpectedUrlNotFound) {
+                       MAYBE_HistoryNavigationError_ExpectedUrlNotFound) {
   const std::string wbn_path = "/web_bundle/test.wbn";
   const std::string primary_url_path = "/web_bundle/test.html";
   const std::string alt_primary_url_path = "/web_bundle/alt.html";
diff --git a/content/public/browser/BUILD.gn b/content/public/browser/BUILD.gn
index b852b9d..d0c1c718 100644
--- a/content/public/browser/BUILD.gn
+++ b/content/public/browser/BUILD.gn
@@ -103,6 +103,7 @@
     "client_hints.h",
     "client_hints_controller_delegate.h",
     "color_chooser.h",
+    "console_message.cc",
     "console_message.h",
     "contacts_picker_properties_requested.h",
     "content_browser_client.cc",
diff --git a/content/public/browser/console_message.cc b/content/public/browser/console_message.cc
new file mode 100644
index 0000000..621b1ca
--- /dev/null
+++ b/content/public/browser/console_message.cc
@@ -0,0 +1,65 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/public/browser/console_message.h"
+
+namespace content {
+
+logging::LogSeverity ConsoleMessageLevelToLogSeverity(
+    blink::mojom::ConsoleMessageLevel level) {
+  logging::LogSeverity log_severity = logging::LOG_VERBOSE;
+  switch (level) {
+    case blink::mojom::ConsoleMessageLevel::kVerbose:
+      log_severity = logging::LOG_VERBOSE;
+      break;
+    case blink::mojom::ConsoleMessageLevel::kInfo:
+      log_severity = logging::LOG_INFO;
+      break;
+    case blink::mojom::ConsoleMessageLevel::kWarning:
+      log_severity = logging::LOG_WARNING;
+      break;
+    case blink::mojom::ConsoleMessageLevel::kError:
+      log_severity = logging::LOG_ERROR;
+      break;
+  }
+
+  return log_severity;
+}
+
+const char* MessageSourceToString(blink::mojom::ConsoleMessageSource source) {
+  switch (source) {
+    case blink::mojom::ConsoleMessageSource::kXml:
+      return "XML";
+    case blink::mojom::ConsoleMessageSource::kJavaScript:
+      return "JS";
+    case blink::mojom::ConsoleMessageSource::kNetwork:
+      return "Network";
+    case blink::mojom::ConsoleMessageSource::kConsoleApi:
+      return "ConsoleAPI";
+    case blink::mojom::ConsoleMessageSource::kStorage:
+      return "Storage";
+    case blink::mojom::ConsoleMessageSource::kAppCache:
+      return "AppCache";
+    case blink::mojom::ConsoleMessageSource::kRendering:
+      return "Rendering";
+    case blink::mojom::ConsoleMessageSource::kSecurity:
+      return "Security";
+    case blink::mojom::ConsoleMessageSource::kOther:
+      return "Other";
+    case blink::mojom::ConsoleMessageSource::kDeprecation:
+      return "Deprecation";
+    case blink::mojom::ConsoleMessageSource::kWorker:
+      return "Worker";
+    case blink::mojom::ConsoleMessageSource::kViolation:
+      return "Violation";
+    case blink::mojom::ConsoleMessageSource::kIntervention:
+      return "Intervention";
+    case blink::mojom::ConsoleMessageSource::kRecommendation:
+      return "Recommendation";
+  }
+  LOG(FATAL) << "Unreachable code.";
+  return nullptr;
+}
+
+}  // namespace content
diff --git a/content/public/browser/console_message.h b/content/public/browser/console_message.h
index 357787a..172779a 100644
--- a/content/public/browser/console_message.h
+++ b/content/public/browser/console_message.h
@@ -7,11 +7,18 @@
 
 #include <string>
 
+#include "content/common/content_export.h"
 #include "third_party/blink/public/mojom/devtools/console_message.mojom.h"
 #include "url/gurl.h"
 
 namespace content {
 
+CONTENT_EXPORT const char* MessageSourceToString(
+    blink::mojom::ConsoleMessageSource source);
+
+CONTENT_EXPORT logging::LogSeverity ConsoleMessageLevelToLogSeverity(
+    blink::mojom::ConsoleMessageLevel level);
+
 // A collection of information about a message that has been added to the
 // console.
 struct ConsoleMessage {
diff --git a/content/public/renderer/BUILD.gn b/content/public/renderer/BUILD.gn
index f640eff..8ace32b 100644
--- a/content/public/renderer/BUILD.gn
+++ b/content/public/renderer/BUILD.gn
@@ -55,6 +55,10 @@
     "worker_thread.h",
   ]
 
+  if (enable_plugins) {
+    sources += [ "ppapi_gfx_conversion.h" ]
+  }
+
   configs += [ "//content:content_implementation" ]
 
   public_deps = [ "//media" ]
diff --git a/content/renderer/pepper/gfx_conversion.h b/content/public/renderer/ppapi_gfx_conversion.h
similarity index 88%
rename from content/renderer/pepper/gfx_conversion.h
rename to content/public/renderer/ppapi_gfx_conversion.h
index 1fe529b..1d7dfc7 100644
--- a/content/renderer/pepper/gfx_conversion.h
+++ b/content/public/renderer/ppapi_gfx_conversion.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_RENDERER_PEPPER_GFX_CONVERSION_H_
-#define CONTENT_RENDERER_PEPPER_GFX_CONVERSION_H_
+#ifndef CONTENT_PUBLIC_RENDERER_PPAPI_GFX_CONVERSION_H_
+#define CONTENT_PUBLIC_RENDERER_PPAPI_GFX_CONVERSION_H_
 
 #include "ppapi/c/pp_point.h"
 #include "ppapi/c/pp_rect.h"
@@ -48,4 +48,4 @@
 
 }  // namespace content
 
-#endif  // CONTENT_RENDERER_PEPPER_GFX_CONVERSION_H_
+#endif  // CONTENT_PUBLIC_RENDERER_PPAPI_GFX_CONVERSION_H_
diff --git a/content/public/test/mock_navigation_handle.h b/content/public/test/mock_navigation_handle.h
index 75a16cb3d..36a7a3c1 100644
--- a/content/public/test/mock_navigation_handle.h
+++ b/content/public/test/mock_navigation_handle.h
@@ -82,7 +82,9 @@
   const GURL& GetBaseURLForDataURL() override { return base_url_for_data_url_; }
   MOCK_METHOD0(IsPost, bool());
   const blink::mojom::Referrer& GetReferrer() override { return referrer_; }
-  void SetReferrer(blink::mojom::ReferrerPtr referrer) override {}
+  void SetReferrer(blink::mojom::ReferrerPtr referrer) override {
+    referrer_ = *referrer;
+  }
   MOCK_METHOD0(HasUserGesture, bool());
   ui::PageTransition GetPageTransition() override { return page_transition_; }
   MOCK_METHOD0(GetNavigationUIData, NavigationUIData*());
diff --git a/content/renderer/BUILD.gn b/content/renderer/BUILD.gn
index 0e7a0c1..2588027b 100644
--- a/content/renderer/BUILD.gn
+++ b/content/renderer/BUILD.gn
@@ -409,7 +409,6 @@
       "pepper/content_renderer_pepper_host_factory.h",
       "pepper/event_conversion.cc",
       "pepper/event_conversion.h",
-      "pepper/gfx_conversion.h",
       "pepper/host_array_buffer_var.cc",
       "pepper/host_array_buffer_var.h",
       "pepper/host_dispatcher_wrapper.cc",
diff --git a/content/renderer/pepper/pepper_graphics_2d_host.cc b/content/renderer/pepper/pepper_graphics_2d_host.cc
index 8afd610..abb8896a 100644
--- a/content/renderer/pepper/pepper_graphics_2d_host.cc
+++ b/content/renderer/pepper/pepper_graphics_2d_host.cc
@@ -22,9 +22,9 @@
 #include "components/viz/common/resources/bitmap_allocation.h"
 #include "components/viz/common/resources/resource_sizes.h"
 #include "components/viz/common/resources/shared_bitmap.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
-#include "content/renderer/pepper/gfx_conversion.h"
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 #include "content/renderer/pepper/ppb_image_data_impl.h"
 #include "content/renderer/render_thread_impl.h"
diff --git a/content/renderer/pepper/pepper_graphics_2d_host_unittest.cc b/content/renderer/pepper/pepper_graphics_2d_host_unittest.cc
index 5e7b378..9118164 100644
--- a/content/renderer/pepper/pepper_graphics_2d_host_unittest.cc
+++ b/content/renderer/pepper/pepper_graphics_2d_host_unittest.cc
@@ -8,7 +8,7 @@
 
 #include "base/cxx17_backports.h"
 #include "base/test/task_environment.h"
-#include "content/renderer/pepper/gfx_conversion.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/renderer/pepper/mock_renderer_ppapi_host.h"
 #include "content/renderer/pepper/ppb_image_data_impl.h"
 #include "ppapi/shared_impl/ppb_view_shared.h"
diff --git a/content/renderer/pepper/pepper_platform_camera_device.cc b/content/renderer/pepper/pepper_platform_camera_device.cc
index efcac7fe..3015b6d 100644
--- a/content/renderer/pepper/pepper_platform_camera_device.cc
+++ b/content/renderer/pepper/pepper_platform_camera_device.cc
@@ -8,7 +8,7 @@
 
 #include "base/bind.h"
 #include "base/check.h"
-#include "content/renderer/pepper/gfx_conversion.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/renderer/pepper/pepper_camera_device_host.h"
 #include "content/renderer/pepper/pepper_media_device_manager.h"
 #include "content/renderer/render_frame_impl.h"
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index cbb8a84..460373b 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -28,8 +28,8 @@
 #include "content/public/common/content_constants.h"
 #include "content/public/common/use_zoom_for_dsf_policy.h"
 #include "content/public/renderer/content_renderer_client.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/renderer/pepper/event_conversion.h"
-#include "content/renderer/pepper/gfx_conversion.h"
 #include "content/renderer/pepper/host_dispatcher_wrapper.h"
 #include "content/renderer/pepper/host_globals.h"
 #include "content/renderer/pepper/message_channel.h"
@@ -1866,7 +1866,8 @@
     metafile_ = metafile;
   }
 
-  PP_PrintPageNumberRange_Dev page_range = {page_number, page_number};
+  PP_PrintPageNumberRange_Dev page_range = {static_cast<uint32_t>(page_number),
+                                            static_cast<uint32_t>(page_number)};
   ranges_.push_back(page_range);
 #endif
 }
diff --git a/content/renderer/pepper/pepper_video_decoder_host.cc b/content/renderer/pepper/pepper_video_decoder_host.cc
index 8cf28fe..c6c99b5 100644
--- a/content/renderer/pepper/pepper_video_decoder_host.cc
+++ b/content/renderer/pepper/pepper_video_decoder_host.cc
@@ -13,9 +13,9 @@
 #include "content/common/pepper_file_util.h"
 #include "content/public/common/content_client.h"
 #include "content/public/renderer/content_renderer_client.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
-#include "content/renderer/pepper/gfx_conversion.h"
 #include "content/renderer/pepper/ppb_graphics_3d_impl.h"
 #include "content/renderer/pepper/video_decoder_shim.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
diff --git a/content/renderer/pepper/pepper_video_encoder_host.cc b/content/renderer/pepper/pepper_video_encoder_host.cc
index 670fbd47..e9d79b7 100644
--- a/content/renderer/pepper/pepper_video_encoder_host.cc
+++ b/content/renderer/pepper/pepper_video_encoder_host.cc
@@ -13,8 +13,8 @@
 #include "build/build_config.h"
 #include "content/common/pepper_file_util.h"
 #include "content/public/common/gpu_stream_constants.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
-#include "content/renderer/pepper/gfx_conversion.h"
 #include "content/renderer/pepper/host_globals.h"
 #include "content/renderer/pepper/video_encoder_shim.h"
 #include "content/renderer/render_thread_impl.h"
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index 0ddaf1a..63f6ceb 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -477,7 +477,7 @@
     // WM_KEYDOWN, WM_CHAR, and WM_KEYUP.
     // WM_KEYDOWN and WM_KEYUP sends virtual-key codes. On the other hand,
     // WM_CHAR sends a composed Unicode character.
-    MSG msg1 = {NULL, WM_KEYDOWN, key_code, 0};
+    MSG msg1 = {NULL, WM_KEYDOWN, static_cast<WPARAM>(key_code), 0};
     ui::KeyEvent evt1(msg1);
     NativeWebKeyboardEvent keydown_event(evt1);
     SendNativeKeyEvent(keydown_event);
@@ -487,7 +487,7 @@
     NativeWebKeyboardEvent char_event(evt2);
     SendNativeKeyEvent(char_event);
 
-    MSG msg3 = {NULL, WM_KEYUP, key_code, 0};
+    MSG msg3 = {NULL, WM_KEYUP, static_cast<WPARAM>(key_code), 0};
     ui::KeyEvent evt3(msg3);
     NativeWebKeyboardEvent keyup_event(evt3);
     SendNativeKeyEvent(keyup_event);
diff --git a/content/test/data/media/picture_in_picture/one-video.html b/content/test/data/media/picture_in_picture/one-video.html
index 1ee55c4..ab48f0f 100644
--- a/content/test/data/media/picture_in_picture/one-video.html
+++ b/content/test/data/media/picture_in_picture/one-video.html
@@ -8,22 +8,22 @@
     const video = document.querySelector('video');
 
     function addPictureInPictureEventListeners() {
-      video.addEventListener('enterpictureinpicture', () => {
+      video.addEventListener('enterpictureinpicture', _ => {
         document.title = 'enterpictureinpicture';
       });
-      video.addEventListener('leavepictureinpicture', () => {
+      video.addEventListener('leavepictureinpicture', _ => {
         document.title = 'leavepictureinpicture';
       });
     }
 
     function addPlayEventListener() {
-      video.addEventListener('play', () => {
+      video.addEventListener('play', _ => {
         document.title = 'play';
       }, { once: true });
     }
 
     function addPauseEventListener() {
-      video.addEventListener('pause', () => {
+      video.addEventListener('pause', _ => {
         document.title = 'pause';
       }, { once: true });
     }
@@ -48,7 +48,7 @@
           return;
         }
 
-        video.addEventListener('ended', () => {
+        video.addEventListener('ended', _ => {
           resolve();
         }, { once: true });
       });
@@ -60,6 +60,25 @@
       return true;
     }
 
+    async function resetVideo() {
+      video.src = "";
+      await _waitForEmptied();
+      return true;
+    }
+
+    function _waitForEmptied() {
+      return new Promise((resolve, _) => {
+        if (video.networkState == HTMLMediaElement.NETWORK_EMPTY) {
+          resolve();
+          return;
+        }
+
+        video.addEventListener('emptied', _ => {
+          resolve();
+        }, { once: true });
+      });
+    }
+
     async function enterPictureInPicture() {
       await _waitForMetadata();
       await video.requestPictureInPicture();
@@ -73,7 +92,7 @@
           return;
         }
 
-        video.addEventListener('loadedmetadata', () => {
+        video.addEventListener('loadedmetadata', _ => {
           resolve();
         }, { once: true });
       });
diff --git a/content/test/ppapi_unittest.cc b/content/test/ppapi_unittest.cc
index 8e1b23d..071d5a1 100644
--- a/content/test/ppapi_unittest.cc
+++ b/content/test/ppapi_unittest.cc
@@ -6,7 +6,7 @@
 
 #include <stdint.h>
 
-#include "content/renderer/pepper/gfx_conversion.h"
+#include "content/public/renderer/ppapi_gfx_conversion.h"
 #include "content/renderer/pepper/host_globals.h"
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 #include "content/renderer/pepper/plugin_module.h"
diff --git a/device/vr/openxr/test/openxr_test_helper.cc b/device/vr/openxr/test/openxr_test_helper.cc
index 5a950b60..cb0c8a86 100644
--- a/device/vr/openxr/test/openxr_test_helper.cc
+++ b/device/vr/openxr/test/openxr_test_helper.cc
@@ -124,8 +124,8 @@
   Microsoft::WRL::ComPtr<ID3D11DeviceContext> context;
   d3d_device_->GetImmediateContext(&context);
 
-  size_t buffer_size = sizeof(device::SubmittedFrameData::raw_buffer);
-  size_t buffer_size_pixels = buffer_size / sizeof(device::Color);
+  constexpr size_t buffer_size = sizeof(device::SubmittedFrameData::raw_buffer);
+  constexpr size_t buffer_size_pixels = buffer_size / sizeof(device::Color);
 
   // We copy the submitted texture to a new texture, so we can map it, and
   // read back pixel data.
diff --git a/docs/cq_quick_run.md b/docs/cq_quick_run.md
new file mode 100644
index 0000000..b885e4d8
--- /dev/null
+++ b/docs/cq_quick_run.md
@@ -0,0 +1,18 @@
+# CQ Quick Run
+
+CQ Quick Run (QR) is a new CQ mode with the goal of delivering results faster.
+QR saves roughly 50% CPU time in exchange for at most a 5% chance of false
+negative.
+
+QR uses a novel regression test selection
+[technique](../testing/regression-test-selection.md) that is more granular than
+the conventional build dependency graph technique (see link for more info).
+
+QR may be the home for other aggressive CQ speed improvements in the future.
+
+## Usage
+
+Ping guterman@google.com if you would like to be added to the pilot/beta. Then
+one can trigger a quick run by running either `git cl try -q` or
+`git cl upload -q`. This sets both the Quick-Run and Commit-Queue labels to 1,
+which starts a Quick Run.
diff --git a/extensions/browser/api/alarms/alarms_api_constants.cc b/extensions/browser/api/alarms/alarms_api_constants.cc
index fbefff4..1bc8d5dd 100644
--- a/extensions/browser/api/alarms/alarms_api_constants.cc
+++ b/extensions/browser/api/alarms/alarms_api_constants.cc
@@ -10,7 +10,10 @@
 // 0.016667 minutes  ~= 1s.
 const double kDevDelayMinimum = 0.016667;
 
-const int kReleaseDelayMinimum = 1;
+// Must use int for initializer so static_assert below will compile.  This can
+// all be made better once C++17 inline variables are allowed.
+constexpr int kReleaseDelayMinimumInitializer = 1;
+const double kReleaseDelayMinimum = kReleaseDelayMinimumInitializer;
 
 const char kWarningMinimumDevDelay[] =
     "Alarm delay is less than minimum of 1 minutes. In released .crx, alarm "
@@ -28,7 +31,8 @@
     "Alarm period is less than minimum of 1 minutes. Alarm \"*\" will fire "
     "approximately every 1 minutes.";
 
-static_assert(kReleaseDelayMinimum == 1, "warning message must be updated");
+static_assert(kReleaseDelayMinimumInitializer == 1,
+              "warning message must be updated");
 
 }  // namespace alarms_api_constants
 }  // namespace extensions
diff --git a/extensions/browser/api/alarms/alarms_api_constants.h b/extensions/browser/api/alarms/alarms_api_constants.h
index a65a953..3b92fe6 100644
--- a/extensions/browser/api/alarms/alarms_api_constants.h
+++ b/extensions/browser/api/alarms/alarms_api_constants.h
@@ -12,7 +12,7 @@
 extern const double kDevDelayMinimum;
 
 // Minimum specifiable alarm period (in minutes) for packed/crx extensions.
-extern const int kReleaseDelayMinimum;
+extern const double kReleaseDelayMinimum;
 
 extern const char kWarningMinimumDevDelay[];
 extern const char kWarningMinimumReleaseDelay[];
diff --git a/extensions/browser/api/web_request/web_request_proxying_url_loader_factory.cc b/extensions/browser/api/web_request/web_request_proxying_url_loader_factory.cc
index fc9b56da..3b2c3305 100644
--- a/extensions/browser/api/web_request/web_request_proxying_url_loader_factory.cc
+++ b/extensions/browser/api/web_request/web_request_proxying_url_loader_factory.cc
@@ -863,15 +863,19 @@
   override_headers_ = nullptr;
 
   if (for_cors_preflight_) {
-    // If this is for CORS preflight, there is no associated client. We notify
-    // the completion here, and deletes |this|.
+    // If this is for CORS preflight, there is no associated client.
     info_->AddResponseInfoFromResourceResponse(*current_response_);
+    // Do not finish proxied preflight requests that require proxy auth.
+    // The request is not finished yet, give control back to network service
+    // which will start authentication process.
+    if (info_->response_code == net::HTTP_PROXY_AUTHENTICATION_REQUIRED)
+      return;
+    // We notify the completion here, and delete |this|.
     ExtensionWebRequestEventRouter::GetInstance()->OnResponseStarted(
         factory_->browser_context_, &info_.value(), net::OK);
     ExtensionWebRequestEventRouter::GetInstance()->OnCompleted(
         factory_->browser_context_, &info_.value(), net::OK);
 
-    // Deletes |this|.
     factory_->RemoveRequest(network_service_request_id_, request_id_);
     return;
   }
diff --git a/extensions/browser/service_worker_task_queue.cc b/extensions/browser/service_worker_task_queue.cc
index a061fddb..f28ceb06 100644
--- a/extensions/browser/service_worker_task_queue.cc
+++ b/extensions/browser/service_worker_task_queue.cc
@@ -15,6 +15,7 @@
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_task_traits.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/console_message.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/service_worker_context.h"
 #include "content/public/browser/storage_partition.h"
@@ -82,7 +83,10 @@
 ServiceWorkerTaskQueue::ServiceWorkerTaskQueue(BrowserContext* browser_context)
     : browser_context_(browser_context) {}
 
-ServiceWorkerTaskQueue::~ServiceWorkerTaskQueue() {}
+ServiceWorkerTaskQueue::~ServiceWorkerTaskQueue() {
+  for (auto* const service_worker_context : observing_worker_contexts_)
+    service_worker_context->RemoveObserver(this);
+}
 
 ServiceWorkerTaskQueue::TestObserver::TestObserver() {}
 
@@ -228,6 +232,19 @@
   SequencedContextId context_id(
       LazyContextId(browser_context_, extension_id, service_worker_scope),
       activation_sequence);
+
+  content::StoragePartition* partition =
+      util::GetStoragePartitionForExtensionId(extension_id, browser_context_);
+
+  content::ServiceWorkerContext* service_worker_context =
+      partition->GetServiceWorkerContext();
+
+  if (observing_worker_contexts_.find(service_worker_context) ==
+      observing_worker_contexts_.end()) {
+    service_worker_context->AddObserver(this);
+  }
+  observing_worker_contexts_.insert(service_worker_context);
+
   const WorkerId worker_id = {extension_id, render_process_id,
                               service_worker_version_id, thread_id};
   WorkerState* worker_state = GetWorkerState(context_id);
@@ -269,6 +286,22 @@
       LazyContextId(browser_context_, extension_id, service_worker_scope),
       activation_sequence);
 
+  content::StoragePartition* partition =
+      util::GetStoragePartitionForExtensionId(extension_id, browser_context_);
+
+  content::ServiceWorkerContext* service_worker_context =
+      partition->GetServiceWorkerContext();
+
+  if (observing_worker_contexts_.find(service_worker_context) !=
+      observing_worker_contexts_.end()) {
+    observing_worker_contexts_.erase(service_worker_context);
+  }
+
+  if (observing_worker_contexts_.find(service_worker_context) ==
+      observing_worker_contexts_.end()) {
+    service_worker_context->RemoveObserver(this);
+  }
+
   WorkerState* worker_state = GetWorkerState(context_id);
   DCHECK(worker_state);
 
@@ -573,6 +606,39 @@
   return iter->second;
 }
 
+void ServiceWorkerTaskQueue::OnReportConsoleMessage(
+    int64_t version_id,
+    const GURL& scope,
+    const content::ConsoleMessage& message) {
+  if (message.message_level != blink::mojom::ConsoleMessageLevel::kError) {
+    // We don't report certain low-severity errors.
+    return;
+  }
+
+  auto error_instance = std::make_unique<RuntimeError>(
+      scope.host(), browser_context_->IsOffTheRecord(),
+      base::UTF8ToUTF16(content::MessageSourceToString(message.source)),
+      message.message,
+      StackTrace(1, StackFrame(message.line_number, 1,
+                               base::UTF8ToUTF16(message.source_url.spec()),
+                               u"")) /* Construct a trace to contain
+                                        one frame with the error */
+      ,
+      message.source_url,
+      content::ConsoleMessageLevelToLogSeverity(message.message_level),
+      -1 /* a service worker does not have a render_view_id */,
+      -1 /* TODO(crbug.com/1218812): Retrieve render_process_id */);
+
+  ExtensionsBrowserClient::Get()->ReportError(browser_context_,
+                                              std::move(error_instance));
+}
+
+void ServiceWorkerTaskQueue::OnDestruct(
+    content::ServiceWorkerContext* context) {
+  context->RemoveObserver(this);
+  observing_worker_contexts_.erase(context);
+}
+
 size_t ServiceWorkerTaskQueue::GetNumPendingTasksForTest(
     const LazyContextId& lazy_context_id) {
   auto current_sequence = GetCurrentSequence(lazy_context_id.extension_id());
diff --git a/extensions/browser/service_worker_task_queue.h b/extensions/browser/service_worker_task_queue.h
index ebe605656..0f2dd33a 100644
--- a/extensions/browser/service_worker_task_queue.h
+++ b/extensions/browser/service_worker_task_queue.h
@@ -14,6 +14,7 @@
 #include "base/strings/string_util.h"
 #include "base/version.h"
 #include "components/keyed_service/core/keyed_service.h"
+#include "content/public/browser/service_worker_context_observer.h"
 #include "extensions/browser/lazy_context_id.h"
 #include "extensions/browser/lazy_context_task_queue.h"
 #include "extensions/browser/service_worker/worker_id.h"
@@ -25,6 +26,7 @@
 
 namespace content {
 class BrowserContext;
+class ServiceWorkerContext;
 }
 
 namespace extensions {
@@ -73,7 +75,8 @@
 //
 // TODO(lazyboy): Clean up queue when extension is unloaded/uninstalled.
 class ServiceWorkerTaskQueue : public KeyedService,
-                               public LazyContextTaskQueue {
+                               public LazyContextTaskQueue,
+                               public content::ServiceWorkerContextObserver {
  public:
   explicit ServiceWorkerTaskQueue(content::BrowserContext* browser_context);
   ~ServiceWorkerTaskQueue() override;
@@ -123,6 +126,12 @@
   absl::optional<ActivationSequence> GetCurrentSequence(
       const ExtensionId& extension_id) const;
 
+  // content::ServiceWorkerContextObserver:
+  void OnReportConsoleMessage(int64_t version_id,
+                              const GURL& scope,
+                              const content::ConsoleMessage& message) override;
+  void OnDestruct(content::ServiceWorkerContext* context) override;
+
   class TestObserver {
    public:
     TestObserver();
@@ -197,6 +206,8 @@
 
   int next_activation_sequence_ = 0;
 
+  std::multiset<content::ServiceWorkerContext*> observing_worker_contexts_;
+
   // The state of worker of each activated extension.
   std::map<SequencedContextId, WorkerState> worker_state_map_;
 
diff --git a/gin/gin_features.cc b/gin/gin_features.cc
index e755db6..c318870 100644
--- a/gin/gin_features.cc
+++ b/gin/gin_features.cc
@@ -85,4 +85,9 @@
 const base::FeatureParam<double> kV8ScriptDelayFraction{
     &kV8ScriptAblation, "V8ScriptDelayFraction", 0.0};
 
+// Experiment to determine the maximum size of the ArrayBuffer cage.
+const base::Feature kV8ArrayBufferCageReservationExperiment{
+    "V8ArrayBufferCageReservationExperiment",
+    base::FEATURE_DISABLED_BY_DEFAULT};
+
 }  // namespace features
diff --git a/gin/gin_features.h b/gin/gin_features.h
index 95567e8..594f31b 100644
--- a/gin/gin_features.h
+++ b/gin/gin_features.h
@@ -32,6 +32,7 @@
 GIN_EXPORT extern const base::FeatureParam<double> kV8ScriptDelayFraction;
 GIN_EXPORT extern const base::Feature kV8ShortBuiltinCalls;
 GIN_EXPORT extern const base::Feature kV8UntrustedCodeMitigations;
+GIN_EXPORT extern const base::Feature kV8ArrayBufferCageReservationExperiment;
 
 }  // namespace features
 
diff --git a/gin/v8_initializer.cc b/gin/v8_initializer.cc
index 8bac97b6..3b856e7 100644
--- a/gin/v8_initializer.cc
+++ b/gin/v8_initializer.cc
@@ -9,6 +9,7 @@
 
 #include <memory>
 
+#include "base/allocator/partition_allocator/page_allocator.h"
 #include "base/check.h"
 #include "base/debug/alias.h"
 #include "base/debug/crash_logging.h"
@@ -17,6 +18,7 @@
 #include "base/files/file_path.h"
 #include "base/files/memory_mapped_file.h"
 #include "base/lazy_instance.h"
+#include "base/metrics/histogram_functions.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/notreached.h"
 #include "base/path_service.h"
@@ -204,6 +206,38 @@
   v8::V8::SetFlagsFromString(buffer, length - 1);
 }
 
+void RunArrayBufferCageReservationExperiment() {
+  // TODO(1218005) remove this function once the experiment has ended.
+#if defined(ARCH_CPU_64_BITS)
+  constexpr size_t kGigaBytes = 1024 * 1024 * 1024;
+  constexpr size_t kTeraBytes = 1024 * kGigaBytes;
+  constexpr size_t kExaBytes = 1024 * kTeraBytes;
+
+  constexpr size_t kCageMaxSize = 1 * kExaBytes;
+  constexpr size_t kCageMinSize = 8 * kGigaBytes;
+
+  void* reservation = nullptr;
+  size_t current_size = kCageMaxSize;
+  while (!reservation && current_size >= kCageMinSize) {
+    // The cage reservation will need to be 4GB aligned.
+    reservation = base::AllocPages(nullptr, current_size, 4 * kGigaBytes,
+                                   base::PageInaccessible, base::PageTag::kV8);
+    if (!reservation) {
+      current_size /= 2;
+    }
+  }
+
+  int result = current_size / kGigaBytes;
+  if (reservation) {
+    base::FreePages(reservation, current_size);
+  } else {
+    result = 0;
+  }
+
+  base::UmaHistogramSparse("V8.MaxArrayBufferCageReservationSize", result);
+#endif
+}
+
 }  // namespace
 
 // static
@@ -212,6 +246,11 @@
   if (v8_is_initialized)
     return;
 
+  if (base::FeatureList::IsEnabled(
+          features::kV8ArrayBufferCageReservationExperiment)) {
+    RunArrayBufferCageReservationExperiment();
+  }
+
   v8::V8::InitializePlatform(V8Platform::Get());
 
   if (!base::FeatureList::IsEnabled(features::kV8OptimizeJavascript)) {
diff --git a/gpu/ipc/common/PRESUBMIT.py b/gpu/ipc/common/PRESUBMIT.py
index 98ecf4b0..b9870f8 100644
--- a/gpu/ipc/common/PRESUBMIT.py
+++ b/gpu/ipc/common/PRESUBMIT.py
@@ -8,6 +8,8 @@
 for more details on the presubmit API built into depot_tools.
 """
 
+USE_PYTHON3 = True
+
 import os.path
 
 
diff --git a/headless/lib/headless_content_main_delegate.cc b/headless/lib/headless_content_main_delegate.cc
index c3ea2d3..506f1e5 100644
--- a/headless/lib/headless_content_main_delegate.cc
+++ b/headless/lib/headless_content_main_delegate.cc
@@ -93,9 +93,7 @@
 
 #ifdef HEADLESS_USE_EMBEDDED_RESOURCES
   ui::ResourceBundle::GetSharedInstance().AddDataPackFromBuffer(
-      base::StringPiece(
-          reinterpret_cast<const char*>(kHeadlessResourcePak.contents),
-          kHeadlessResourcePak.length),
+      {kHeadlessResourcePak.contents, kHeadlessResourcePak.length},
       ui::SCALE_FACTOR_NONE);
 
 #else
diff --git a/ios/chrome/app/BUILD.gn b/ios/chrome/app/BUILD.gn
index c80341f..1c37ac7 100644
--- a/ios/chrome/app/BUILD.gn
+++ b/ios/chrome/app/BUILD.gn
@@ -4,7 +4,6 @@
 
 import("//build/apple/compile_entitlements.gni")
 import("//build/apple/tweak_info_plist.gni")
-import("//build/buildflag_header.gni")
 import("//build/config/ios/ios_sdk.gni")
 import("//build/config/ios/rules.gni")
 import("//ios/build/chrome_build.gni")
diff --git a/ios/chrome/app/application_delegate/BUILD.gn b/ios/chrome/app/application_delegate/BUILD.gn
index bb8f042..83ff10d 100644
--- a/ios/chrome/app/application_delegate/BUILD.gn
+++ b/ios/chrome/app/application_delegate/BUILD.gn
@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
+import("//ios/build/chrome_build.gni")
 import("//ios/chrome/features.gni")
 
 source_set("application_delegate") {
@@ -217,7 +218,7 @@
     "//ios/chrome/browser/web_state_list",
     "//ios/chrome/browser/web_state_list:agents",
     "//ios/chrome/browser/web_state_list:session_metrics",
-    "//ios/chrome/browser/widget_kit",
+    "//ios/chrome/browser/widget_kit:features",
     "//ios/chrome/common/app_group",
     "//ios/chrome/common/app_group:main_app",
     "//ios/net",
@@ -231,6 +232,10 @@
     "//url",
   ]
 
+  if (ios_enable_widget_kit_extension) {
+    deps += [ "//ios/chrome/browser/widget_kit" ]
+  }
+
   frameworks = [
     "CoreSpotlight.framework",
     "UIKit.framework",
diff --git a/ios/chrome/app/application_delegate/metrics_mediator.mm b/ios/chrome/app/application_delegate/metrics_mediator.mm
index 1e8b266..615ac1f 100644
--- a/ios/chrome/app/application_delegate/metrics_mediator.mm
+++ b/ios/chrome/app/application_delegate/metrics_mediator.mm
@@ -36,7 +36,7 @@
 #import "ios/chrome/browser/ui/main/scene_state.h"
 #import "ios/chrome/browser/ui/ntp/ntp_util.h"
 #import "ios/chrome/browser/web_state_list/web_state_list.h"
-#import "ios/chrome/browser/widget_kit/widget_metrics_util.h"
+#include "ios/chrome/browser/widget_kit/features.h"
 #include "ios/chrome/common/app_group/app_group_metrics.h"
 #include "ios/chrome/common/app_group/app_group_metrics_mainapp.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
@@ -46,6 +46,10 @@
 #import "ios/web/public/web_state.h"
 #include "url/gurl.h"
 
+#if BUILDFLAG(ENABLE_WIDGET_KIT_EXTENSION)
+#import "ios/chrome/browser/widget_kit/widget_metrics_util.h"  // nogncheck
+#endif
+
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
@@ -242,9 +246,11 @@
         base::UserMetricsAction("MobileVoiceOverActiveOnLaunch"));
   }
 
+#if BUILDFLAG(ENABLE_WIDGET_KIT_EXTENSION)
   if (@available(iOS 14, *)) {
     [WidgetMetricsUtil logInstalledWidgets];
   }
+#endif
 
   // Create the first user action recorder and schedule a task to expire it
   // after some timeout. If unable to determine the last time the app entered
diff --git a/ios/chrome/app/strings/resources/ios_strings_ar.xtb b/ios/chrome/app/strings/resources/ios_strings_ar.xtb
index 4bca26f..b7405e48 100644
--- a/ios/chrome/app/strings/resources/ios_strings_ar.xtb
+++ b/ios/chrome/app/strings/resources/ios_strings_ar.xtb
@@ -405,6 +405,7 @@
 <translation id="5197255632782567636">الإنترنت</translation>
 <translation id="5210365745912300556">إغلاق علامة التبويب</translation>
 <translation id="5228579091201413441">تفعيل المزامنة</translation>
+<translation id="5232485538978018676">تسجيل الدخول باستخدام حساب مُدار</translation>
 <translation id="5234764350956374838">تجاهل</translation>
 <translation id="5245322853195994030">إلغاء المزامنة</translation>
 <translation id="5271549068863921519">حفظ كلمة المرور</translation>
@@ -721,6 +722,7 @@
 <translation id="8206354486702514201">تم فرض هذا الإعداد بواسطة المشرف.</translation>
 <translation id="8225985093977202398">الصور والملفات المُخزنة مؤقتًا</translation>
 <translation id="8261506727792406068">حذف</translation>
+<translation id="8271720166617117963">القبول وتسجيل الدخول</translation>
 <translation id="8281781826761538115">التلقائي - <ph name="DEFAULT_LOCALE" /></translation>
 <translation id="8281886186245836920">التخطّي</translation>
 <translation id="8283172974887967105">ضبط…</translation>
diff --git a/ios/chrome/app/strings/resources/ios_strings_en-GB.xtb b/ios/chrome/app/strings/resources/ios_strings_en-GB.xtb
index b43b7bf..c43f0964 100644
--- a/ios/chrome/app/strings/resources/ios_strings_en-GB.xtb
+++ b/ios/chrome/app/strings/resources/ios_strings_en-GB.xtb
@@ -804,6 +804,7 @@
 <translation id="9094033019050270033">Update password</translation>
 <translation id="9100610230175265781">Passphrase required</translation>
 <translation id="9107664647686727385">Check for compromised passwords</translation>
+<translation id="9124387962554796433">Google may use your history to personalise Search and other Google services.</translation>
 <translation id="9137526406337347448">Google Services</translation>
 <translation id="9148126808321036104">Sign in again</translation>
 <translation id="9152539721251340337">Create a QR code</translation>
diff --git a/ios/chrome/app/strings/resources/ios_strings_sq.xtb b/ios/chrome/app/strings/resources/ios_strings_sq.xtb
index 8b42ad5..014c67c 100644
--- a/ios/chrome/app/strings/resources/ios_strings_sq.xtb
+++ b/ios/chrome/app/strings/resources/ios_strings_sq.xtb
@@ -405,6 +405,7 @@
 <translation id="5197255632782567636">Interneti</translation>
 <translation id="5210365745912300556">Mbyll skedën</translation>
 <translation id="5228579091201413441">Aktivizo sinkronizimin</translation>
+<translation id="5232485538978018676">Identifikohu me llogari të menaxhuar</translation>
 <translation id="5234764350956374838">Hiq</translation>
 <translation id="5245322853195994030">Anulo sinkronizimin</translation>
 <translation id="5271549068863921519">Ruaj fjalëkalimin</translation>
@@ -721,6 +722,7 @@
 <translation id="8206354486702514201">Ky cilësim zbatohet nga administratori yt.</translation>
 <translation id="8225985093977202398">Imazhet dhe skedarët në memorien specifike</translation>
 <translation id="8261506727792406068">Fshi</translation>
+<translation id="8271720166617117963">Pranoje dhe identifikohu</translation>
 <translation id="8281781826761538115">Parazgjedhja - <ph name="DEFAULT_LOCALE" /></translation>
 <translation id="8281886186245836920">Kapërceje</translation>
 <translation id="8283172974887967105">Cakto…</translation>
@@ -763,6 +765,7 @@
 <translation id="8654802032646794042">Anulo</translation>
 <translation id="8668210798914567634">Kjo faqe është ruajtur në "Listën tënde të leximit".</translation>
 <translation id="8680787084697685621">Detajet e identifikimit të llogarisë nuk janë të përditësuara.</translation>
+<translation id="8691262314411702087">Zgjidh çfarë të sinkronizosh</translation>
 <translation id="8693663554456874301">{count,plural, =1{Mbylle skedën}other{Mbylli skedat}}</translation>
 <translation id="8706588385081740091">Fjalëkalimet</translation>
 <translation id="8717864919010420084">Kopjo lidhjen</translation>
diff --git a/ios/chrome/app/strings/resources/ios_strings_uz.xtb b/ios/chrome/app/strings/resources/ios_strings_uz.xtb
index 07122846..4b0e836 100644
--- a/ios/chrome/app/strings/resources/ios_strings_uz.xtb
+++ b/ios/chrome/app/strings/resources/ios_strings_uz.xtb
@@ -804,6 +804,7 @@
 <translation id="9094033019050270033">Parolni yangilash</translation>
 <translation id="9100610230175265781">Kodli ibora zarur</translation>
 <translation id="9107664647686727385">Oshkor etilgan parollar uchun tekshirish</translation>
+<translation id="9124387962554796433">Qidiruv va boshqa xizmatlarni sizga moslashtirish uchun Google tarix maʼlumotlaringizdan foydalanishi mumkin.</translation>
 <translation id="9137526406337347448">Google xizmatlari</translation>
 <translation id="9148126808321036104">Qaytadan kiring</translation>
 <translation id="9152539721251340337">QR kod yaratish</translation>
diff --git a/ios/chrome/browser/app_launcher/app_launcher_tab_helper_unittest.mm b/ios/chrome/browser/app_launcher/app_launcher_tab_helper_unittest.mm
index a52cd4c..04dae43 100644
--- a/ios/chrome/browser/app_launcher/app_launcher_tab_helper_unittest.mm
+++ b/ios/chrome/browser/app_launcher/app_launcher_tab_helper_unittest.mm
@@ -196,15 +196,7 @@
 };
 
 // Tests that a valid URL launches app.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_AbuseDetectorPolicyAllowedForValidUrl \
-  AbuseDetectorPolicyAllowedForValidUrl
-#else
-#define MAYBE_AbuseDetectorPolicyAllowedForValidUrl \
-  DISABLED_AbuseDetectorPolicyAllowedForValidUrl
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_AbuseDetectorPolicyAllowedForValidUrl) {
+TEST_F(AppLauncherTabHelperTest, AbuseDetectorPolicyAllowedForValidUrl) {
   abuse_detector_.policy = ExternalAppLaunchPolicyAllow;
   EXPECT_FALSE(TestShouldAllowRequest(@"valid://1234",
                                       /*target_frame_is_main=*/true,
@@ -227,13 +219,7 @@
 
 // Tests that a valid URL shows an alert and launches app when launch policy is
 // to prompt and user accepts.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_ValidUrlPromptUserAccepts ValidUrlPromptUserAccepts
-#else
-#define MAYBE_ValidUrlPromptUserAccepts DISABLED_ValidUrlPromptUserAccepts
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_ValidUrlPromptUserAccepts) {
+TEST_F(AppLauncherTabHelperTest, ValidUrlPromptUserAccepts) {
   abuse_detector_.policy = ExternalAppLaunchPolicyPrompt;
   delegate_.set_should_accept_prompt(true);
   EXPECT_FALSE(TestShouldAllowRequest(@"valid://1234",
@@ -259,13 +245,7 @@
 
 // Tests that ShouldAllowRequest only launches apps for App Urls in main frame,
 // or iframe when there was a recent user interaction.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_ShouldAllowRequestWithAppUrl ShouldAllowRequestWithAppUrl
-#else
-#define MAYBE_ShouldAllowRequestWithAppUrl DISABLED_ShouldAllowRequestWithAppUrl
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_ShouldAllowRequestWithAppUrl) {
+TEST_F(AppLauncherTabHelperTest, ShouldAllowRequestWithAppUrl) {
   NSString* url_string = @"itms-apps://itunes.apple.com/us/app/appname/id123";
   EXPECT_FALSE(TestShouldAllowRequest(url_string, /*target_frame_is_main=*/true,
                                       /*target_frame_is_cross_origin=*/false,
@@ -331,13 +311,7 @@
 
 // Tests that when the last committed URL is invalid, the URL is only opened
 // when the last committed item is nil.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_ValidUrlInvalidCommittedURL ValidUrlInvalidCommittedURL
-#else
-#define MAYBE_ValidUrlInvalidCommittedURL DISABLED_ValidUrlInvalidCommittedURL
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_ValidUrlInvalidCommittedURL) {
+TEST_F(AppLauncherTabHelperTest, ValidUrlInvalidCommittedURL) {
   NSString* url_string = @"itms-apps://itunes.apple.com/us/app/appname/id123";
   web_state_.SetCurrentURL(GURL());
 
@@ -370,13 +344,7 @@
 
 // Tests that tel: URLs are blocked when the target frame is cross-origin
 // with respect to the source origin.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_TelUrls TelUrls
-#else
-#define MAYBE_TelUrls DISABLED_TelUrls
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_TelUrls) {
+TEST_F(AppLauncherTabHelperTest, TelUrls) {
   EXPECT_FALSE(TestShouldAllowRequest(@"tel:+12345551212",
                                       /*target_frame_is_main=*/true,
                                       /*target_frame_is_cross_origin=*/true,
@@ -406,13 +374,7 @@
 // This test is using https://chromeiostesting-dot-u2fdemo.appspot.com URL which
 // is a URL allowed for the purpose of testing, but the test doesn't send any
 // requests to the server.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_U2FUrls U2FUrls
-#else
-#define MAYBE_U2FUrls DISABLED_U2FUrls
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_U2FUrls) {
+TEST_F(AppLauncherTabHelperTest, U2FUrls) {
   // Add required tab helpers for the U2F check.
   TabIdTabHelper::CreateForWebState(&web_state_);
   std::unique_ptr<web::NavigationItem> item = web::NavigationItem::Create();
@@ -450,13 +412,7 @@
 }
 
 // Tests that URLs with Chrome Bundle schemes are blocked on iframes.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_ChromeBundleUrlScheme ChromeBundleUrlScheme
-#else
-#define MAYBE_ChromeBundleUrlScheme DISABLED_ChromeBundleUrlScheme
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_ChromeBundleUrlScheme) {
+TEST_F(AppLauncherTabHelperTest, ChromeBundleUrlScheme) {
   // Get the test bundle URL Scheme.
   NSString* scheme = [[ChromeAppConstants sharedInstance] bundleURLScheme];
   NSString* url = [NSString stringWithFormat:@"%@://www.google.com", scheme];
@@ -483,13 +439,7 @@
 // Tests that ShouldAllowRequest updates the reading list correctly for non-link
 // transitions regardless of the app launching success when AppLauncherRefresh
 // flag is enabled.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_UpdatingTheReadingList UpdatingTheReadingList
-#else
-#define MAYBE_UpdatingTheReadingList DISABLED_UpdatingTheReadingList
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_UpdatingTheReadingList) {
+TEST_F(AppLauncherTabHelperTest, UpdatingTheReadingList) {
   // Update reading list if the transition is not a link transition.
   EXPECT_TRUE(TestReadingListUpdate(/*is_app_blocked=*/true,
                                     /*is_link_transition*/ false,
@@ -515,14 +465,7 @@
 
 // Tests that launching a SMS URL via a JavaScript redirect in the main frame
 // is allowed. Covers the scenario for crbug.com/1058388
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_LaunchSmsApp_JavaScriptRedirect LaunchSmsApp_JavaScriptRedirect
-#else
-#define MAYBE_LaunchSmsApp_JavaScriptRedirect \
-  DISABLED_LaunchSmsApp_JavaScriptRedirect
-#endif
-TEST_F(AppLauncherTabHelperTest, MAYBE_LaunchSmsApp_JavaScriptRedirect) {
+TEST_F(AppLauncherTabHelperTest, LaunchSmsApp_JavaScriptRedirect) {
   NSString* sms_url_string = @"sms:?&body=Hello%20World";
   ui::PageTransition page_transition = ui::PageTransitionFromInt(
       ui::PageTransition::PAGE_TRANSITION_LINK |
@@ -595,13 +538,7 @@
 
 // Tests that URLs to non-blocked domains are able to open native apps when
 // policy is blocking other domains.
-// TODO(crbug.com/1172516): The test fails on device.
-#if TARGET_IPHONE_SIMULATOR
-#define MAYBE_AllowedUrl AllowedUrl
-#else
-#define MAYBE_AllowedUrl DISABLED_AllowedUrl
-#endif
-TEST_F(BlockedUrlPolicyAppLauncherTabHelperTest, MAYBE_AllowedUrl) {
+TEST_F(BlockedUrlPolicyAppLauncherTabHelperTest, AllowedUrl) {
   base::test::ScopedFeatureList scoped_features;
   scoped_features.InitWithFeatures(
       /*enabled_features=*/{kURLBlocklistIOS,
diff --git a/ios/chrome/browser/download/BUILD.gn b/ios/chrome/browser/download/BUILD.gn
index 3e90fa0..3a571dc 100644
--- a/ios/chrome/browser/download/BUILD.gn
+++ b/ios/chrome/browser/download/BUILD.gn
@@ -23,6 +23,9 @@
     "download_manager_tab_helper_delegate.h",
     "external_app_util.h",
     "external_app_util.mm",
+    "mobileconfig_tab_helper.h",
+    "mobileconfig_tab_helper.mm",
+    "mobileconfig_tab_helper_delegate.h",
     "pass_kit_tab_helper.h",
     "pass_kit_tab_helper.mm",
     "pass_kit_tab_helper_delegate.h",
@@ -40,6 +43,7 @@
     "//ios/chrome/browser/overlays",
     "//ios/chrome/browser/overlays/public/common/confirmation",
     "//ios/chrome/browser/overlays/public/common/confirmation:util",
+    "//ios/chrome/browser/ui/download:features",
     "//ios/web/common",
     "//ios/web/public",
     "//ios/web/public/download",
diff --git a/ios/chrome/browser/download/browser_download_service.mm b/ios/chrome/browser/download/browser_download_service.mm
index 261e784..6fdf5241 100644
--- a/ios/chrome/browser/download/browser_download_service.mm
+++ b/ios/chrome/browser/download/browser_download_service.mm
@@ -9,9 +9,11 @@
 #import "ios/chrome/browser/download/ar_quick_look_tab_helper.h"
 #include "ios/chrome/browser/download/download_manager_metric_names.h"
 #import "ios/chrome/browser/download/download_manager_tab_helper.h"
+#import "ios/chrome/browser/download/mobileconfig_tab_helper.h"
 #include "ios/chrome/browser/download/pass_kit_mime_type.h"
 #import "ios/chrome/browser/download/pass_kit_tab_helper.h"
 #include "ios/chrome/browser/download/usdz_mime_type.h"
+#import "ios/chrome/browser/ui/download/features.h"
 #import "ios/web/public/download/download_controller.h"
 #import "ios/web/public/download/download_task.h"
 
@@ -122,6 +124,13 @@
     if (tab_helper) {
       tab_helper->Download(std::move(task));
     }
+  } else if (task->GetMimeType() == "application/x-apple-aspen-config" &&
+             base::FeatureList::IsEnabled(kDownloadMobileConfigFile)) {
+    MobileConfigTabHelper* tab_helper =
+        MobileConfigTabHelper::FromWebState(web_state);
+    if (tab_helper) {
+      tab_helper->Download(std::move(task));
+    }
   } else {
     DownloadManagerTabHelper* tab_helper =
         DownloadManagerTabHelper::FromWebState(web_state);
diff --git a/ios/chrome/browser/download/mobileconfig_tab_helper.h b/ios/chrome/browser/download/mobileconfig_tab_helper.h
new file mode 100644
index 0000000..fb3af20
--- /dev/null
+++ b/ios/chrome/browser/download/mobileconfig_tab_helper.h
@@ -0,0 +1,48 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_DOWNLOAD_MOBILECONFIG_TAB_HELPER_H_
+#define IOS_CHROME_BROWSER_DOWNLOAD_MOBILECONFIG_TAB_HELPER_H_
+
+#import <Foundation/Foundation.h>
+
+#include "ios/web/public/download/download_task_observer.h"
+#import "ios/web/public/web_state_user_data.h"
+
+@protocol MobileConfigTabHelperDelegate;
+namespace web {
+class DownloadTask;
+class WebState;
+}  // namespace web
+
+// TabHelper which manages .mobileconfig files.
+class MobileConfigTabHelper
+    : public web::WebStateUserData<MobileConfigTabHelper> {
+ public:
+  MobileConfigTabHelper() = default;
+  MobileConfigTabHelper(const MobileConfigTabHelper&) = delete;
+  MobileConfigTabHelper& operator=(const MobileConfigTabHelper&) = delete;
+
+  // Creates TabHelper. |web_state| must not be null.
+  static void CreateForWebState(web::WebState* web_state);
+
+  id<MobileConfigTabHelperDelegate> delegate() { return delegate_; }
+
+  // |delegate| is not retained by this instance.
+  void set_delegate(id<MobileConfigTabHelperDelegate> delegate) {
+    delegate_ = delegate;
+  }
+
+  // Download the .mobileconfig file using SFSafariViewController and stops the
+  // given |task|.
+  void Download(std::unique_ptr<web::DownloadTask> task);
+
+ private:
+  friend class web::WebStateUserData<MobileConfigTabHelper>;
+  __weak id<MobileConfigTabHelperDelegate> delegate_ = nil;
+
+  WEB_STATE_USER_DATA_KEY_DECL();
+};
+
+#endif  // IOS_CHROME_BROWSER_DOWNLOAD_MOBILECONFIG_TAB_HELPER_H_
diff --git a/ios/chrome/browser/download/mobileconfig_tab_helper.mm b/ios/chrome/browser/download/mobileconfig_tab_helper.mm
new file mode 100644
index 0000000..4da8dac
--- /dev/null
+++ b/ios/chrome/browser/download/mobileconfig_tab_helper.mm
@@ -0,0 +1,31 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/download/mobileconfig_tab_helper.h"
+
+#import "ios/chrome/browser/download/mobileconfig_tab_helper_delegate.h"
+#import "ios/web/public/download/download_task.h"
+#import "net/base/mac/url_conversions.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+void MobileConfigTabHelper::CreateForWebState(web::WebState* web_state) {
+  DCHECK(web_state);
+  if (!FromWebState(web_state)) {
+    web_state->SetUserData(UserDataKey(),
+                           std::make_unique<MobileConfigTabHelper>());
+  }
+}
+
+void MobileConfigTabHelper::Download(std::unique_ptr<web::DownloadTask> task) {
+  // MobileConfigTabHelper does not really proceed with the download. Instead
+  // it extract the download URL and forward it to MobileSafariView. The task
+  // is dropped and destroyed at the end of the method.
+  NSURL* url = net::NSURLWithGURL(task->GetOriginalUrl());
+  [delegate_ presentMobileConfigAlertFromURL:url];
+}
+
+WEB_STATE_USER_DATA_KEY_IMPL(MobileConfigTabHelper)
diff --git a/ios/chrome/browser/download/mobileconfig_tab_helper_delegate.h b/ios/chrome/browser/download/mobileconfig_tab_helper_delegate.h
new file mode 100644
index 0000000..5d28343a
--- /dev/null
+++ b/ios/chrome/browser/download/mobileconfig_tab_helper_delegate.h
@@ -0,0 +1,19 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_DOWNLOAD_MOBILECONFIG_TAB_HELPER_DELEGATE_H_
+#define IOS_CHROME_BROWSER_DOWNLOAD_MOBILECONFIG_TAB_HELPER_DELEGATE_H_
+
+#import <Foundation/Foundation.h>
+
+// Delegate for MobileConfigTabHelper class.
+@protocol MobileConfigTabHelperDelegate
+
+// Called to download .mobileconfig file, |fileURL| points to the .mobileconfig
+// file that we are trying to download. |fileURL| cannot be nil.
+- (void)presentMobileConfigAlertFromURL:(NSURL*)fileURL;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_DOWNLOAD_MOBILECONFIG_TAB_HELPER_DELEGATE_H_
diff --git a/ios/chrome/browser/flags/BUILD.gn b/ios/chrome/browser/flags/BUILD.gn
index 87dbb849..b63c4b9 100644
--- a/ios/chrome/browser/flags/BUILD.gn
+++ b/ios/chrome/browser/flags/BUILD.gn
@@ -56,6 +56,7 @@
     "//ios/chrome/browser/ui:feature_flags",
     "//ios/chrome/browser/ui/content_suggestions:feature_flags",
     "//ios/chrome/browser/ui/default_promo:utils",
+    "//ios/chrome/browser/ui/download:features",
     "//ios/chrome/browser/ui/fullscreen:feature_flags",
     "//ios/chrome/browser/ui/infobars:feature_flags",
     "//ios/chrome/browser/ui/ntp:feature_flags",
diff --git a/ios/chrome/browser/flags/about_flags.mm b/ios/chrome/browser/flags/about_flags.mm
index ac41b2b..37093aa1 100644
--- a/ios/chrome/browser/flags/about_flags.mm
+++ b/ios/chrome/browser/flags/about_flags.mm
@@ -65,6 +65,7 @@
 #include "ios/chrome/browser/system_flags.h"
 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_feature.h"
 #import "ios/chrome/browser/ui/default_promo/default_browser_utils.h"
+#import "ios/chrome/browser/ui/download/features.h"
 #import "ios/chrome/browser/ui/fullscreen/fullscreen_features.h"
 #import "ios/chrome/browser/ui/infobars/infobar_feature.h"
 #import "ios/chrome/browser/ui/ntp/new_tab_page_feature.h"
@@ -759,6 +760,10 @@
      flag_descriptions::kEnableExtendedSyncPromosCapabilityName,
      flag_descriptions::kEnableExtendedSyncPromosCapabilityDescription,
      flags_ui::kOsIos, FEATURE_VALUE_TYPE(switches::kMinorModeSupport)},
+    {"download-mobileconfig-file",
+     flag_descriptions::kDownloadMobileConfigFileName,
+     flag_descriptions::kDownloadMobileConfigFileDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(kDownloadMobileConfigFile)},
 };
 
 bool SkipConditionalFeatureEntry(const flags_ui::FeatureEntry& entry) {
diff --git a/ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc b/ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc
index 815ce5e85..121936d 100644
--- a/ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc
+++ b/ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc
@@ -150,6 +150,10 @@
     "When enabled, replaces articles feed with new content Suggestion Feed in "
     "the NTP.";
 
+const char kDownloadMobileConfigFileName[] = "Download .mobileconfig file";
+const char kDownloadMobileConfigFileDescription[] =
+    "Allows user to download and install a .mobileconfig file";
+
 const char kEditPasswordsInSettingsName[] = "Edit passwords in settings";
 const char kEditPasswordsInSettingsDescription[] =
     "Enables password editing in settings.";
diff --git a/ios/chrome/browser/flags/ios_chrome_flag_descriptions.h b/ios/chrome/browser/flags/ios_chrome_flag_descriptions.h
index a7dfdbe..4b97102 100644
--- a/ios/chrome/browser/flags/ios_chrome_flag_descriptions.h
+++ b/ios/chrome/browser/flags/ios_chrome_flag_descriptions.h
@@ -134,6 +134,10 @@
 extern const char kDiscoverFeedInNtpName[];
 extern const char kDiscoverFeedInNtpDescription[];
 
+// Title and description for the flag to enable .mobileconfig file downloads.
+extern const char kDownloadMobileConfigFileName[];
+extern const char kDownloadMobileConfigFileDescription[];
+
 // Title and description for the flag to enable kEditPasswordsInSettings flag on
 // iOS.
 extern const char kEditPasswordsInSettingsName[];
diff --git a/ios/chrome/browser/sync/sync_setup_service.cc b/ios/chrome/browser/sync/sync_setup_service.cc
index a758700..414a16c 100644
--- a/ios/chrome/browser/sync/sync_setup_service.cc
+++ b/ios/chrome/browser/sync/sync_setup_service.cc
@@ -110,10 +110,6 @@
       sync_all, sync_service_->GetUserSettings()->GetSelectedTypes());
 }
 
-bool SyncSetupService::IsSyncEnabled() const {
-  return CanSyncFeatureStart();
-}
-
 bool SyncSetupService::CanSyncFeatureStart() const {
   return sync_service_->CanSyncFeatureStart();
 }
@@ -128,7 +124,7 @@
   switch (sync_service_->GetAuthError().state()) {
     case GoogleServiceAuthError::REQUEST_CANCELED:
       return kSyncServiceCouldNotConnect;
-    // Based on sync_ui_util::GetStatusLabelsForAuthError, SERVICE_UNAVAILABLE
+    // Based on GetSyncStatusLabelsForAuthError, SERVICE_UNAVAILABLE
     // corresponds to sync having been disabled for the user's domain.
     case GoogleServiceAuthError::SERVICE_UNAVAILABLE:
       return kSyncServiceServiceUnavailable;
diff --git a/ios/chrome/browser/sync/sync_setup_service.h b/ios/chrome/browser/sync/sync_setup_service.h
index 00fc86a9..6f0a1f9d 100644
--- a/ios/chrome/browser/sync/sync_setup_service.h
+++ b/ios/chrome/browser/sync/sync_setup_service.h
@@ -53,8 +53,6 @@
   // |SyncableDatatypes|.
   syncer::ModelType GetModelType(SyncableDatatype datatype);
 
-  // Deprecated, use |CanSyncFeatureStart|.
-  bool IsSyncEnabled() const;
   // Returns whether Sync-the-transport can start the Sync feature.
   virtual bool CanSyncFeatureStart() const;
   // Enables or disables sync. Changes won't take effect in the sync backend
diff --git a/ios/chrome/browser/tabs/BUILD.gn b/ios/chrome/browser/tabs/BUILD.gn
index 042ddccc..5c040df 100644
--- a/ios/chrome/browser/tabs/BUILD.gn
+++ b/ios/chrome/browser/tabs/BUILD.gn
@@ -92,6 +92,7 @@
     "//ios/chrome/browser/translate",
     "//ios/chrome/browser/u2f",
     "//ios/chrome/browser/ui:feature_flags",
+    "//ios/chrome/browser/ui/download:features",
     "//ios/chrome/browser/ui/infobars:feature_flags",
     "//ios/chrome/browser/voice",
     "//ios/chrome/browser/web",
diff --git a/ios/chrome/browser/tabs/tab_helper_util.mm b/ios/chrome/browser/tabs/tab_helper_util.mm
index 975ce9b..d5a1f70 100644
--- a/ios/chrome/browser/tabs/tab_helper_util.mm
+++ b/ios/chrome/browser/tabs/tab_helper_util.mm
@@ -27,6 +27,7 @@
 #import "ios/chrome/browser/complex_tasks/ios_task_tab_helper.h"
 #import "ios/chrome/browser/crash_report/breadcrumbs/breadcrumb_manager_tab_helper.h"
 #import "ios/chrome/browser/download/ar_quick_look_tab_helper.h"
+#import "ios/chrome/browser/download/mobileconfig_tab_helper.h"
 #include "ios/chrome/browser/favicon/favicon_service_factory.h"
 #import "ios/chrome/browser/find_in_page/find_tab_helper.h"
 #include "ios/chrome/browser/history/history_service_factory.h"
@@ -60,6 +61,7 @@
 #import "ios/chrome/browser/sync/ios_chrome_synced_tab_delegate.h"
 #import "ios/chrome/browser/translate/chrome_ios_translate_client.h"
 #import "ios/chrome/browser/u2f/u2f_tab_helper.h"
+#import "ios/chrome/browser/ui/download/features.h"
 #import "ios/chrome/browser/ui/infobars/infobar_feature.h"
 #import "ios/chrome/browser/ui/ui_feature_flags.h"
 #import "ios/chrome/browser/voice/voice_search_navigations_tab_helper.h"
@@ -137,6 +139,10 @@
     BreadcrumbManagerTabHelper::CreateForWebState(web_state);
   }
 
+  if (base::FeatureList::IsEnabled(kDownloadMobileConfigFile)) {
+    MobileConfigTabHelper::CreateForWebState(web_state);
+  }
+
   SafeBrowsingQueryManager::CreateForWebState(web_state);
   SafeBrowsingTabHelper::CreateForWebState(web_state);
   SafeBrowsingUrlAllowList::CreateForWebState(web_state);
diff --git a/ios/chrome/browser/ui/browser_view/BUILD.gn b/ios/chrome/browser/ui/browser_view/BUILD.gn
index 8d922e8..0e6fbb0 100644
--- a/ios/chrome/browser/ui/browser_view/BUILD.gn
+++ b/ios/chrome/browser/ui/browser_view/BUILD.gn
@@ -101,6 +101,7 @@
     "//ios/chrome/browser/ui/default_promo:default_promo_ui",
     "//ios/chrome/browser/ui/dialogs:dialogs_internal",
     "//ios/chrome/browser/ui/download",
+    "//ios/chrome/browser/ui/download:features",
     "//ios/chrome/browser/ui/elements:elements_internal",
     "//ios/chrome/browser/ui/find_bar",
     "//ios/chrome/browser/ui/first_run",
diff --git a/ios/chrome/browser/ui/browser_view/browser_coordinator.mm b/ios/chrome/browser/ui/browser_view/browser_coordinator.mm
index a4e1820..1c272ab 100644
--- a/ios/chrome/browser/ui/browser_view/browser_coordinator.mm
+++ b/ios/chrome/browser/ui/browser_view/browser_coordinator.mm
@@ -53,6 +53,8 @@
 #import "ios/chrome/browser/ui/default_promo/default_promo_non_modal_presentation_delegate.h"
 #import "ios/chrome/browser/ui/default_promo/tailored_promo_coordinator.h"
 #import "ios/chrome/browser/ui/download/ar_quick_look_coordinator.h"
+#import "ios/chrome/browser/ui/download/features.h"
+#import "ios/chrome/browser/ui/download/mobileconfig_coordinator.h"
 #import "ios/chrome/browser/ui/download/pass_kit_coordinator.h"
 #import "ios/chrome/browser/ui/find_bar/find_bar_controller_ios.h"
 #import "ios/chrome/browser/ui/find_bar/find_bar_coordinator.h"
@@ -148,6 +150,9 @@
 @property(nonatomic, strong)
     FormInputAccessoryCoordinator* formInputAccessoryCoordinator;
 
+// Presents a SFSafariViewController in order to download .mobileconfig file.
+@property(nonatomic, strong) MobileConfigCoordinator* mobileConfigCoordinator;
+
 // Weak reference for the next coordinator to be displayed over the toolbar.
 @property(nonatomic, weak) ChromeCoordinator* nextToolbarCoordinator;
 
@@ -397,6 +402,13 @@
   self.formInputAccessoryCoordinator.navigator = self;
   [self.formInputAccessoryCoordinator start];
 
+  if (base::FeatureList::IsEnabled(kDownloadMobileConfigFile)) {
+    self.mobileConfigCoordinator = [[MobileConfigCoordinator alloc]
+        initWithBaseViewController:self.viewController
+                           browser:self.browser];
+    [self.mobileConfigCoordinator start];
+  }
+
   self.passKitCoordinator =
       [[PassKitCoordinator alloc] initWithBaseViewController:self.viewController
                                                      browser:self.browser];
@@ -461,6 +473,9 @@
   [self.formInputAccessoryCoordinator stop];
   self.formInputAccessoryCoordinator = nil;
 
+  [self.mobileConfigCoordinator stop];
+  self.mobileConfigCoordinator = nil;
+
   [self.pageInfoCoordinator stop];
   self.pageInfoCoordinator = nil;
 
diff --git a/ios/chrome/browser/ui/default_promo/default_browser_promo_non_modal_egtest.mm b/ios/chrome/browser/ui/default_promo/default_browser_promo_non_modal_egtest.mm
index 9216d7f1..bb5ac8a 100644
--- a/ios/chrome/browser/ui/default_promo/default_browser_promo_non_modal_egtest.mm
+++ b/ios/chrome/browser/ui/default_promo/default_browser_promo_non_modal_egtest.mm
@@ -76,7 +76,13 @@
 
 // Test that a non modal default modal promo appears when it is triggered by
 // pasting a copied link.
-- (void)testNonModalAppears {
+// TODO(crbug.com/1218866): Test is failing on devices.
+#if TARGET_IPHONE_SIMULATOR
+#define MAYBE_testNonModalAppears testNonModalAppears
+#else
+#define MAYBE_testNonModalAppears DISABLED_testNonModalAppears
+#endif
+- (void)MAYBE_testNonModalAppears {
   // Promos only appear on iOS 14 and up.
   if (!base::ios::IsRunningOnIOS14OrLater()) {
     return;
diff --git a/ios/chrome/browser/ui/download/BUILD.gn b/ios/chrome/browser/ui/download/BUILD.gn
index bf0cdac6..7f73b03 100644
--- a/ios/chrome/browser/ui/download/BUILD.gn
+++ b/ios/chrome/browser/ui/download/BUILD.gn
@@ -19,6 +19,8 @@
     "download_manager_state_view.mm",
     "download_manager_view_controller.h",
     "download_manager_view_controller.mm",
+    "mobileconfig_coordinator.h",
+    "mobileconfig_coordinator.mm",
     "pass_kit_coordinator.h",
     "pass_kit_coordinator.mm",
     "radial_progress_view.h",
@@ -149,3 +151,12 @@
 
   frameworks = [ "UIKit.framework" ]
 }
+
+source_set("features") {
+  configs += [ "//build/config/compiler:enable_arc" ]
+  sources = [
+    "features.h",
+    "features.mm",
+  ]
+  deps = [ "//base" ]
+}
diff --git a/ios/chrome/browser/ui/download/features.h b/ios/chrome/browser/ui/download/features.h
new file mode 100644
index 0000000..b38556d0e
--- /dev/null
+++ b/ios/chrome/browser/ui/download/features.h
@@ -0,0 +1,13 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_DOWNLOAD_FEATURES_H_
+#define IOS_CHROME_BROWSER_UI_DOWNLOAD_FEATURES_H_
+
+#include "base/feature_list.h"
+
+// Feature to download .mobileconfig files in SFSafariViewController.
+extern const base::Feature kDownloadMobileConfigFile;
+
+#endif  // u'IOS_CHROME_BROWSER_UI_DOWNLOAD_FEATURES_H_
diff --git a/ios/chrome/browser/ui/download/features.mm b/ios/chrome/browser/ui/download/features.mm
new file mode 100644
index 0000000..450ff4a
--- /dev/null
+++ b/ios/chrome/browser/ui/download/features.mm
@@ -0,0 +1,12 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/ui/download/features.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+const base::Feature kDownloadMobileConfigFile{
+    "DownloadMobileconfigFile", base::FEATURE_DISABLED_BY_DEFAULT};
diff --git a/ios/chrome/browser/ui/download/mobileconfig_coordinator.h b/ios/chrome/browser/ui/download/mobileconfig_coordinator.h
new file mode 100644
index 0000000..fd275ad
--- /dev/null
+++ b/ios/chrome/browser/ui/download/mobileconfig_coordinator.h
@@ -0,0 +1,15 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_DOWNLOAD_MOBILECONFIG_COORDINATOR_H_
+#define IOS_CHROME_BROWSER_UI_DOWNLOAD_MOBILECONFIG_COORDINATOR_H_
+
+#import "ios/chrome/browser/ui/coordinators/chrome_coordinator.h"
+
+// Presents SFSafariViewController in order to download .mobileconfig file.
+@interface MobileConfigCoordinator : ChromeCoordinator
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_DOWNLOAD_MOBILECONFIG_COORDINATOR_H_
diff --git a/ios/chrome/browser/ui/download/mobileconfig_coordinator.mm b/ios/chrome/browser/ui/download/mobileconfig_coordinator.mm
new file mode 100644
index 0000000..f931e6c
--- /dev/null
+++ b/ios/chrome/browser/ui/download/mobileconfig_coordinator.mm
@@ -0,0 +1,107 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/ui/download/mobileconfig_coordinator.h"
+
+#include <memory>
+
+#include "base/scoped_observation.h"
+#import "ios/chrome/browser/download/mobileconfig_tab_helper.h"
+#import "ios/chrome/browser/download/mobileconfig_tab_helper_delegate.h"
+#import "ios/chrome/browser/main/browser.h"
+#import "ios/chrome/browser/web_state_list/web_state_list.h"
+#import "ios/chrome/browser/web_state_list/web_state_list_observer_bridge.h"
+#import "ios/web/public/web_state_observer_bridge.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface MobileConfigCoordinator () <CRWWebStateObserver,
+                                       MobileConfigTabHelperDelegate,
+                                       WebStateListObserving> {
+  // WebStateList observers.
+  std::unique_ptr<WebStateListObserverBridge> _webStateListObserverBridge;
+  std::unique_ptr<base::ScopedObservation<WebStateList, WebStateListObserver>>
+      _scopedWebStateListObserver;
+}
+
+// The WebStateList being observed.
+@property(nonatomic, readonly) WebStateList* webStateList;
+
+@end
+
+@implementation MobileConfigCoordinator
+
+- (WebStateList*)webStateList {
+  return self.browser->GetWebStateList();
+}
+
+- (void)start {
+  for (int i = 0; i < self.webStateList->count(); i++) {
+    web::WebState* webState = self.webStateList->GetWebStateAt(i);
+    [self installDelegatesForWebState:webState];
+  }
+
+  _webStateListObserverBridge =
+      std::make_unique<WebStateListObserverBridge>(self);
+  _scopedWebStateListObserver = std::make_unique<
+      base::ScopedObservation<WebStateList, WebStateListObserver>>(
+      _webStateListObserverBridge.get());
+  _scopedWebStateListObserver->Observe(self.webStateList);
+}
+
+- (void)stop {
+  for (int i = 0; i < self.webStateList->count(); i++) {
+    web::WebState* webState = self.webStateList->GetWebStateAt(i);
+    [self uninstallDelegatesForWebState:webState];
+  }
+}
+
+#pragma mark - Private
+
+// Installs delegates for |webState|.
+- (void)installDelegatesForWebState:(web::WebState*)webState {
+  if (MobileConfigTabHelper::FromWebState(webState)) {
+    MobileConfigTabHelper::FromWebState(webState)->set_delegate(self);
+  }
+}
+
+// Uninstalls delegates for |webState|.
+- (void)uninstallDelegatesForWebState:(web::WebState*)webState {
+  if (MobileConfigTabHelper::FromWebState(webState)) {
+    MobileConfigTabHelper::FromWebState(webState)->set_delegate(nil);
+  }
+}
+
+#pragma mark - WebStateListObserving
+
+- (void)webStateList:(WebStateList*)webStateList
+    didInsertWebState:(web::WebState*)webState
+              atIndex:(int)index
+           activating:(BOOL)activating {
+  [self installDelegatesForWebState:webState];
+}
+
+- (void)webStateList:(WebStateList*)webStateList
+    didReplaceWebState:(web::WebState*)oldWebState
+          withWebState:(web::WebState*)newWebState
+               atIndex:(int)index {
+  [self uninstallDelegatesForWebState:oldWebState];
+  [self installDelegatesForWebState:newWebState];
+}
+
+- (void)webStateList:(WebStateList*)webStateList
+    didDetachWebState:(web::WebState*)webState
+              atIndex:(int)index {
+  [self uninstallDelegatesForWebState:webState];
+}
+
+#pragma mark - MobileConfigTabHelperDelegate
+
+- (void)presentMobileConfigAlertFromURL:(NSURL*)fileURL {
+  // TODO(crbug.com/781770): Present the alert.
+}
+
+@end
diff --git a/ios/chrome/browser/ui/settings/settings_table_view_controller.mm b/ios/chrome/browser/ui/settings/settings_table_view_controller.mm
index 1262d1e..311e196 100644
--- a/ios/chrome/browser/ui/settings/settings_table_view_controller.mm
+++ b/ios/chrome/browser/ui/settings/settings_table_view_controller.mm
@@ -1213,7 +1213,12 @@
                             completion:nil];
           break;
         }
-        case kSyncOff:
+        case kSyncOff: {
+          DCHECK(
+              base::FeatureList::IsEnabled(signin::kMobileIdentityConsistency));
+          [self showGoogleSync];
+          break;
+        }
         case kSyncEnabled:
         case kSyncEnabledWithError:
         case kSyncEnabledWithNoSelectedTypes: {
@@ -1598,12 +1603,12 @@
       googleSyncItem.iconImageName = kSyncAndGoogleServicesSyncOffImageName;
       break;
     }
-    case kSyncConsentOff:
-    case kSyncOff: {
+    case kSyncConsentOff: {
       googleSyncItem.detailText = l10n_util::GetNSString(IDS_IOS_SETTING_OFF);
       googleSyncItem.iconImageName = kSyncAndGoogleServicesSyncOffImageName;
       break;
     }
+    case kSyncOff:
     case kSyncEnabledWithNoSelectedTypes: {
       googleSyncItem.detailText = nil;
       googleSyncItem.iconImageName = kSyncAndGoogleServicesSyncOffImageName;
diff --git a/ios/chrome/browser/ui/settings/settings_table_view_controller_mice_unittest.mm b/ios/chrome/browser/ui/settings/settings_table_view_controller_mice_unittest.mm
index 51ec13c..7b9fe5a 100644
--- a/ios/chrome/browser/ui/settings/settings_table_view_controller_mice_unittest.mm
+++ b/ios/chrome/browser/ui/settings/settings_table_view_controller_mice_unittest.mm
@@ -211,7 +211,7 @@
 }
 
 // Verifies that the Sync icon displays the off state when the user has
-// completed the sign-in and sync flow then explcitly turned off the Sync
+// completed the sign-in and sync flow then explicitly turned off the Sync
 // setting.
 TEST_F(SettingsTableViewControllerMICETest, TurnsSyncOffAfterFirstSetup) {
   ON_CALL(*sync_service_mock_->GetMockUserSettings(), IsFirstSetupComplete())
@@ -232,12 +232,15 @@
       static_cast<TableViewDetailIconItem*>(account_items[1]);
   ASSERT_NSEQ(l10n_util::GetNSString(IDS_IOS_GOOGLE_SYNC_SETTINGS_TITLE),
               sync_item.text);
-  ASSERT_NSEQ(l10n_util::GetNSString(IDS_IOS_SETTING_OFF),
-              sync_item.detailText);
+  ASSERT_NSEQ(nil, sync_item.detailText);
+  // Check that there is no sign-in promo when there is a sync error.
+  ASSERT_FALSE([controller().tableViewModel
+      hasSectionForSectionIdentifier:SettingsSectionIdentifier::
+                                         SettingsSectionIdentifierSignIn]);
 }
 
 // Verifies that the Sync icon displays the off state (and no detail text) when
-// the user has completed the sign-in and sync flow then explcitly turned off
+// the user has completed the sign-in and sync flow then explicitly turned off
 // all data types in the Sync settings.
 // This case can only happen for pre-MICE users who migrated with MICE.
 TEST_F(SettingsTableViewControllerMICETest,
@@ -264,3 +267,27 @@
               sync_item.text);
   ASSERT_EQ(nil, sync_item.detailText);
 }
+
+// Verifies that the Sync icon displays the off state (with OFF in detail text)
+// when the user has not agreed on sync. This case is possible when using MICE
+// web sign-in.
+TEST_F(SettingsTableViewControllerMICETest, SyncSetupNotComplete) {
+  ON_CALL(*sync_service_mock_->GetMockUserSettings(), IsFirstSetupComplete())
+      .WillByDefault(Return(false));
+  auth_service_->SignIn(fake_identity_);
+
+  CreateController();
+  CheckController();
+
+  NSArray* account_items = [controller().tableViewModel
+      itemsInSectionWithIdentifier:SettingsSectionIdentifier::
+                                       SettingsSectionIdentifierAccount];
+  ASSERT_EQ(3U, account_items.count);
+
+  TableViewDetailIconItem* sync_item =
+      static_cast<TableViewDetailIconItem*>(account_items[1]);
+  ASSERT_NSEQ(l10n_util::GetNSString(IDS_IOS_GOOGLE_SYNC_SETTINGS_TITLE),
+              sync_item.text);
+  ASSERT_NSEQ(l10n_util::GetNSString(IDS_IOS_SETTING_OFF),
+              sync_item.detailText);
+}
diff --git a/ios/chrome/browser/web/session_state/web_session_state_tab_helper.h b/ios/chrome/browser/web/session_state/web_session_state_tab_helper.h
index 9e8ce22..d8eeac1a 100644
--- a/ios/chrome/browser/web/session_state/web_session_state_tab_helper.h
+++ b/ios/chrome/browser/web/session_state/web_session_state_tab_helper.h
@@ -27,7 +27,7 @@
 
   static void CreateForWebState(web::WebState* web_state);
 
-  // Returns true if the feature is enabled and running iOS TBA or newer.
+  // Returns true if the feature is enabled and running iOS 15 or newer.
   static bool IsEnabled();
 
   // If kRestoreSessionFromCache is enabled restore |web_state|'s WKWebView
diff --git a/ios/chrome/browser/web/session_state/web_session_state_tab_helper.mm b/ios/chrome/browser/web/session_state/web_session_state_tab_helper.mm
index b39e660..377ec5a9 100644
--- a/ios/chrome/browser/web/session_state/web_session_state_tab_helper.mm
+++ b/ios/chrome/browser/web/session_state/web_session_state_tab_helper.mm
@@ -59,16 +59,12 @@
   if (!base::FeatureList::IsEnabled(web::kRestoreSessionFromCache)) {
     return false;
   }
-#if 0
-  // This API only exists on iOS_TBA.
-  if (@available(iOS TBA, *)) {
+
+  // This API is only available on iOS 15.
+  if (@available(iOS 15, *)) {
     return true;
-  } else {
-    return false;
   }
-#else
-  return BUILDFLAG(CHROMIUM_BRANDING);
-#endif
+  return false;
 }
 
 WebSessionStateTabHelper::WebSessionStateTabHelper(web::WebState* web_state)
diff --git a/ios/chrome/browser/web/session_state/web_session_state_tab_helper_unittest.mm b/ios/chrome/browser/web/session_state/web_session_state_tab_helper_unittest.mm
index bb780b70..18c58710 100644
--- a/ios/chrome/browser/web/session_state/web_session_state_tab_helper_unittest.mm
+++ b/ios/chrome/browser/web/session_state/web_session_state_tab_helper_unittest.mm
@@ -65,13 +65,16 @@
 };
 
 // Tests that APIs do nothing when the feature is disabled.
-TEST_F(WebSessionStateTabHelperTest, DISABLED_DisableFeature) {
+TEST_F(WebSessionStateTabHelperTest, DisableFeature) {
   base::test::ScopedFeatureList scoped_feature_list;
   scoped_feature_list.InitAndDisableFeature(web::kRestoreSessionFromCache);
 
+  WebSessionStateTabHelper* helper =
+      WebSessionStateTabHelper::FromWebState(web_state_.get());
+  ASSERT_FALSE(helper->IsEnabled());
+
   // Nothing should be saved or restored when the feature is disabled.
-  ASSERT_FALSE(WebSessionStateTabHelper::FromWebState(web_state_.get())
-                   ->RestoreSessionFromCache());
+  ASSERT_FALSE(helper->RestoreSessionFromCache());
 
   web_state_->GetView();
   web_state_->SetKeepRenderProcessAlive(true);
@@ -81,7 +84,7 @@
   DCHECK(WaitUntilConditionOrTimeout(kWaitForPageLoadTimeout, ^bool {
     return !web_state_->IsLoading();
   }));
-  WebSessionStateTabHelper::FromWebState(web_state_.get())->SaveSessionState();
+  helper->SaveSessionState();
   FlushRunLoops();
 
   // File should not be saved.
@@ -93,7 +96,7 @@
 }
 
 // Tests session state serialize and deserialize APIs.
-TEST_F(WebSessionStateTabHelperTest, DISABLED_SessionStateRestore) {
+TEST_F(WebSessionStateTabHelperTest, SessionStateRestore) {
   base::test::ScopedFeatureList scoped_feature_list;
   scoped_feature_list.InitAndEnableFeature(web::kRestoreSessionFromCache);
 
@@ -120,13 +123,16 @@
       session_cache_directory_.Append(base::SysNSStringToUTF8(sessionID));
   ASSERT_FALSE(base::PathExists(filePath));
 
-  WebSessionStateTabHelper::FromWebState(web_state_.get())
-      ->SaveSessionStateIfStale();
+  WebSessionStateTabHelper* helper =
+      WebSessionStateTabHelper::FromWebState(web_state_.get());
+  helper->SaveSessionStateIfStale();
   FlushRunLoops();
-  if (@available(iOS 13, *)) {
+  if (@available(iOS 15, *)) {
+    ASSERT_TRUE(
+        WebSessionStateTabHelper::FromWebState(web_state_.get())->IsEnabled());
     ASSERT_TRUE(base::PathExists(filePath));
   } else {
-    // On iOS 12, the feature is disabled.
+    // On iOS 14, the feature is disabled.
     EXPECT_FALSE(base::PathExists(filePath));
     return;
   }
diff --git a/ios/chrome/browser/widget_kit/BUILD.gn b/ios/chrome/browser/widget_kit/BUILD.gn
index 90c6e82..ebd9e553 100644
--- a/ios/chrome/browser/widget_kit/BUILD.gn
+++ b/ios/chrome/browser/widget_kit/BUILD.gn
@@ -2,46 +2,54 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/buildflag_header.gni")
 import("//build/config/ios/ios_sdk.gni")
 import("//ios/build/chrome_build.gni")
 
-source_set("widget_kit") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-  sources = [
-    "widget_metrics_util.h",
-    "widget_metrics_util.mm",
-  ]
-
-  deps = [
-    ":widget_kit_swift",
-    "//base",
-  ]
-  frameworks = [ "Foundation.framework" ]
+buildflag_header("features") {
+  header = "features.h"
+  flags = [ "ENABLE_WIDGET_KIT_EXTENSION=$ios_enable_widget_kit_extension" ]
 }
 
-source_set("widget_kit_swift") {
-  module_name = "widget_kit_swift"
+if (ios_enable_widget_kit_extension) {
+  source_set("widget_kit") {
+    configs += [ "//build/config/compiler:enable_arc" ]
+    sources = [
+      "widget_metrics_util.h",
+      "widget_metrics_util.mm",
+    ]
 
-  configs += [ "//build/config/compiler:enable_arc" ]
-  sources = [
-    "user_defaults_widget_store.swift",
-    "widget_metrics_logger.swift",
-  ]
+    deps = [
+      ":widget_kit_swift",
+      "//base",
+    ]
+    frameworks = [ "Foundation.framework" ]
+  }
 
-  frameworks = [
-    "Foundation.framework",
-    "WidgetKit.framework",
-  ]
-}
+  source_set("widget_kit_swift") {
+    module_name = "widget_kit_swift"
 
-source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-  testonly = true
-  sources = []
-  deps = [
-    ":widget_kit",
-    "//base/test:test_support",
-    "//ios/web/public/test",
-    "//testing/gtest",
-  ]
+    configs += [ "//build/config/compiler:enable_arc" ]
+    sources = [
+      "user_defaults_widget_store.swift",
+      "widget_metrics_logger.swift",
+    ]
+
+    frameworks = [
+      "Foundation.framework",
+      "WidgetKit.framework",
+    ]
+  }
+
+  source_set("unit_tests") {
+    configs += [ "//build/config/compiler:enable_arc" ]
+    testonly = true
+    sources = []
+    deps = [
+      ":widget_kit",
+      "//base/test:test_support",
+      "//ios/web/public/test",
+      "//testing/gtest",
+    ]
+  }
 }
diff --git a/ios/chrome/test/BUILD.gn b/ios/chrome/test/BUILD.gn
index 87aef74..be215f51 100644
--- a/ios/chrome/test/BUILD.gn
+++ b/ios/chrome/test/BUILD.gn
@@ -353,6 +353,10 @@
     "//ios/testing:http_server_bundle_data",
   ]
 
+  if (ios_enable_widget_kit_extension) {
+    deps += [ "//ios/chrome/browser/widget_kit:unit_tests" ]
+  }
+
   if (ios_enable_search_widget_extension) {
     deps += [ "//ios/chrome/search_widget_extension:unit_tests" ]
   }
diff --git a/ios/features.gni b/ios/features.gni
index ee30067..e1e3404 100644
--- a/ios/features.gni
+++ b/ios/features.gni
@@ -15,7 +15,4 @@
   # Controls whether universal links are blocked from opening native apps
   # when the user is browsing in off the record mode.
   block_universal_links_in_off_the_record_mode = true
-
-  # Controls whether unreleased WebKit native session restore is built.
-  webkit_session_restore = false
 }
diff --git a/ios/web/web_state/ui/BUILD.gn b/ios/web/web_state/ui/BUILD.gn
index 3c00cd7..bb7e2ff2 100644
--- a/ios/web/web_state/ui/BUILD.gn
+++ b/ios/web/web_state/ui/BUILD.gn
@@ -6,18 +6,12 @@
 import("//ios/build/config.gni")
 import("//ios/features.gni")
 
-buildflag_header("webkit_session_restore_buildflags") {
-  header = "webkit_session_restore_buildflags.h"
-  flags = [ "WEBKIT_SESSION_RESTORE=$webkit_session_restore" ]
-}
-
 source_set("ui") {
   public_deps = [ ":web_controller_header" ]
   deps = [
     ":crw_context_menu_controller",
     ":crw_web_view_navigation_proxy",
     ":web_view_handler",
-    ":webkit_session_restore_buildflags",
     "//base",
     "//base/ios",
     "//build:branding_buildflags",
diff --git a/ios/web/web_state/ui/crw_web_controller.h b/ios/web/web_state/ui/crw_web_controller.h
index 893d111a..ac3ceb4 100644
--- a/ios/web/web_state/ui/crw_web_controller.h
+++ b/ios/web/web_state/ui/crw_web_controller.h
@@ -193,12 +193,9 @@
 // multiwindow action or orientation change.
 - (void)surfaceSizeChanged;
 
-// Injects an opaque NSData block into a WKWebView to restore or serialize.
-// TODO(crbug.com/1174560) This depends on iOS TBA logic landed in WebKit's
-// opensource repository, and currently includes not-to-be-shipped logic to use
-// private APIs, so the rest of the Chromium logic can be tested. When iOS TBA
-// is released with the necessary logic, the private implementation can be
-// removed.
+// Injects an opaque NSData block into a WKWebView to restore or serialize. Only
+// supported on iOS15+. On earlier iOS versions, |setSessionStateData| is
+// a no-op, and |sessionStateData| will return nil.
 - (BOOL)setSessionStateData:(NSData*)data;
 - (NSData*)sessionStateData;
 
diff --git a/ios/web/web_state/ui/crw_web_controller.mm b/ios/web/web_state/ui/crw_web_controller.mm
index 695ed59..1acca5e 100644
--- a/ios/web/web_state/ui/crw_web_controller.mm
+++ b/ios/web/web_state/ui/crw_web_controller.mm
@@ -59,7 +59,6 @@
 #import "ios/web/web_state/ui/crw_web_view_proxy_impl.h"
 #import "ios/web/web_state/ui/crw_wk_ui_handler.h"
 #import "ios/web/web_state/ui/crw_wk_ui_handler_delegate.h"
-#import "ios/web/web_state/ui/webkit_session_restore_buildflags.h"
 #import "ios/web/web_state/ui/wk_web_view_configuration_provider.h"
 #import "ios/web/web_state/user_interaction_state.h"
 #import "ios/web/web_state/web_state_impl.h"
@@ -907,77 +906,44 @@
   [self displayWebView];
 }
 
-// TODO(crbug.com/1174560) This depends on iOS TBA logic landed in WebKit's
-// opensource repository, and currently includes not-to-be-shipped logic to use
-// private APIs, so the rest of the Chromium logic can be tested. When iOS TBA
-// is released with the necessary logic, the private implementation can be
-// removed. See https://bugs.webkit.org/show_bug.cgi?id=220958 for details.
 - (BOOL)setSessionStateData:(NSData*)data {
-#if BUILDFLAG(CHROMIUM_BRANDING)
-  [self ensureWebViewCreated];
-  self.navigationHandler.blockUniversalLinksOnNextDecidePolicy = true;
-#if BUILDFLAG(WEBKIT_SESSION_RESTORE)
-  if (@available(iOS TBA, *)) {
+#if defined(__IPHONE_15_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_15_0
+  if (@available(iOS 15, *)) {
     NSError* error = nil;
-    id interactionState = [NSKeyedUnarchiver
-        unarchivedObjectOfClass:[(id)[self.webView interactionState] class]
-                       fromData:data
-                          error:&error];
-    if (error)
+    NSKeyedUnarchiver* unarchiver =
+        [[NSKeyedUnarchiver alloc] initForReadingFromData:data error:&error];
+    if (!unarchiver || error) {
+      DLOG(WARNING) << "Error creating unarchiver for session state data: "
+                    << base::SysNSStringToUTF8([error description]);
       return NO;
+    }
+    unarchiver.requiresSecureCoding = NO;
+    id interactionState =
+        [unarchiver decodeObjectForKey:NSKeyedArchiveRootObjectKey];
+    if (!interactionState) {
+      DLOG(WARNING) << "Error decoding interactionState.";
+      return NO;
+    }
+    [self ensureWebViewCreated];
+    self.navigationHandler.blockUniversalLinksOnNextDecidePolicy = true;
     [self.webView setInteractionState:interactionState];
     return YES;
-#else  // BUILDFLAG(WEBKIT_SESSION_RESTORE)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wundeclared-selector"
-  Class SessionStateClass = NSClassFromString(@"_WKSessionState");
-  id sessionState = [[SessionStateClass alloc] initWithData:data];
-  if (!sessionState)
-    return NO;
-  SEL selector = @selector(_restoreSessionState:andNavigate:);
-  NSMethodSignature* method_signature =
-      [self.webView methodSignatureForSelector:selector];
-  NSInvocation* invocation =
-      [NSInvocation invocationWithMethodSignature:method_signature];
-  invocation.target = self.webView;
-  invocation.selector = selector;
-  [invocation setArgument:&sessionState atIndex:2];
-  BOOL navigate = YES;
-  [invocation setArgument:&navigate atIndex:3];
-  [invocation invoke];
-  return YES;
-#pragma clang diagnostic pop
-#endif  // BUILDFLAG(WEBKIT_SESSION_RESTORE)
-#else   // BUILDFLAG(CHROMIUM_BRANDING)
+  }
+#endif
   return NO;
-#endif  // BUILDFLAG(CHROMIUM_BRANDING)
 }
 
-// TODO(crbug.com/1174560) This depends on iOS TBA logic landed in WebKit's
-// opensource repository, and currently includes not-to-be-shipped logic to use
-// private APIs, so the rest of the Chromium logic can be tested. When iOS TBA
-// is released with the necessary logic, the private implementation can be
-// removed. See https://bugs.webkit.org/show_bug.cgi?id=220958 for details.
 - (NSData*)sessionStateData {
-#if BUILDFLAG(CHROMIUM_BRANDING)
-#if BUILDFLAG(WEBKIT_SESSION_RESTORE)
-  if (@available(iOS TBA, *)) {
+#if defined(__IPHONE_15_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_15_0
+  if (@available(iOS 15, *)) {
     NSError* error = nil;
     return [NSKeyedArchiver
         archivedDataWithRootObject:self.webView.interactionState
-             requiringSecureCoding:YES
+             requiringSecureCoding:NO
                              error:&error];
   }
+#endif
   return nil;
-#else  // #BUILDFLAG(WEBKIT_SESSION_RESTORE)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wundeclared-selector"
-  return [[self.webView performSelector:@selector(_sessionState)] data];
-#pragma clang diagnostic pop
-#endif  // BUILDFLAG(WEBKIT_SESSION_RESTORE)
-#else
-  return nil;
-#endif  // BUILDFLAG(CHROMIUM_BRANDING)
 }
 
 #pragma mark - CRWTouchTrackingDelegate (Public)
diff --git a/ios/web/web_state/web_state_impl_unittest.mm b/ios/web/web_state/web_state_impl_unittest.mm
index d42e4ea..45f1a336 100644
--- a/ios/web/web_state/web_state_impl_unittest.mm
+++ b/ios/web/web_state/web_state_impl_unittest.mm
@@ -1253,7 +1253,12 @@
 
 // Tests that WebState sessionState data doesn't load things with unsafe
 // restore.
-TEST_F(WebStateImplTest, DISABLED_MixedSafeUnsafeRestore) {
+TEST_F(WebStateImplTest, MixedSafeUnsafeRestore) {
+  if (@available(iOS 15, *)) {
+  } else {
+    return;
+  }
+
   GURL urls[3] = {GURL("https://chromium.test/1"),
                   GURL("https://chromium.test/2"),
                   GURL("https://chromium.test/3")};
@@ -1280,7 +1285,11 @@
 }
 
 // Tests that WebState sessionState data can be read and writen.
-TEST_F(WebStateImplTest, DISABLED_ReadAndWriteSessionStateData) {
+TEST_F(WebStateImplTest, ReadAndWriteSessionStateData) {
+  if (@available(iOS 15, *)) {
+  } else {
+    return;
+  }
   web::WebState::CreateParams params(GetBrowserState());
   __block auto web_state = std::make_unique<web::WebStateImpl>(params);
   CRWWebController* web_controller = web_state->GetWebController();
diff --git a/media/formats/webm/webm_cluster_parser_unittest.cc b/media/formats/webm/webm_cluster_parser_unittest.cc
index 474c7762..0d8bfaf6 100644
--- a/media/formats/webm/webm_cluster_parser_unittest.cc
+++ b/media/formats/webm/webm_cluster_parser_unittest.cc
@@ -67,8 +67,8 @@
 const int kAudioTrackNum = 1;
 const int kVideoTrackNum = 2;
 const int kTextTrackNum = 3;
-const int kTestAudioFrameDefaultDurationInMs = 13;
-const int kTestVideoFrameDefaultDurationInMs = 17;
+constexpr double kTestAudioFrameDefaultDurationInMs = 13;
+constexpr double kTestVideoFrameDefaultDurationInMs = 17;
 
 // Test duration defaults must differ from parser estimation defaults to know
 // which durations parser used when emitting buffers.
@@ -292,10 +292,10 @@
 
  protected:
   void ResetParserToHaveDefaultDurations() {
-    base::TimeDelta default_audio_duration = base::TimeDelta::FromMilliseconds(
-        kTestAudioFrameDefaultDurationInMs);
-    base::TimeDelta default_video_duration = base::TimeDelta::FromMilliseconds(
-        kTestVideoFrameDefaultDurationInMs);
+    base::TimeDelta default_audio_duration =
+        base::TimeDelta::FromMillisecondsD(kTestAudioFrameDefaultDurationInMs);
+    base::TimeDelta default_video_duration =
+        base::TimeDelta::FromMillisecondsD(kTestVideoFrameDefaultDurationInMs);
     ASSERT_GE(default_audio_duration, base::TimeDelta());
     ASSERT_GE(default_video_duration, base::TimeDelta());
     ASSERT_NE(kNoTimestamp, default_audio_duration);
@@ -378,13 +378,13 @@
                                     TextTrackConfig(kTextSubtitles, "", "",
                                                     "")));
   base::TimeDelta default_audio_duration =
-      base::TimeDelta::FromMilliseconds(kTestAudioFrameDefaultDurationInMs);
+      base::TimeDelta::FromMillisecondsD(kTestAudioFrameDefaultDurationInMs);
   ASSERT_GE(default_audio_duration, base::TimeDelta());
   ASSERT_NE(kNoTimestamp, default_audio_duration);
   parser_.reset(CreateParserWithDefaultDurationsAndOptionalTextTracks(
       default_audio_duration, kNoTimestamp, text_tracks));
 
-  const int kExpectedVideoEstimationInMs = 33;
+  constexpr double kExpectedVideoEstimationInMs = 33;
 
   const BlockInfo kBlockInfo[] = {
       {kVideoTrackNum, 0, 33, true, NULL, 0, false},
@@ -832,8 +832,8 @@
   // last block in a cluster is estimated independently for each track in the
   // cluster using the maximum seen so far.
 
-  const int kExpectedAudioEstimationInMs = 23;
-  const int kExpectedVideoEstimationInMs = 34;
+  constexpr double kExpectedAudioEstimationInMs = 23;
+  constexpr double kExpectedVideoEstimationInMs = 34;
   const BlockInfo kBlockInfo1[] = {
       {kAudioTrackNum, 0, 23, true, NULL, 0, false},
       {kAudioTrackNum, 23, 22, true, NULL, 0, false},
@@ -902,8 +902,8 @@
   // cluster. Duration for the last block in a cluster is estimated
   // independently for each track in the cluster using the maximum seen so far.
 
-  const int kExpectedAudioEstimationInMs = 23;
-  const int kExpectedVideoEstimationInMs = 34;
+  constexpr double kExpectedAudioEstimationInMs = 23;
+  constexpr double kExpectedVideoEstimationInMs = 34;
   const BlockInfo kBlockInfo1[] = {
       {kAudioTrackNum, 0, -23, false, NULL, 0, false},
       {kAudioTrackNum, 23, -22, false, NULL, 0, false},
diff --git a/media/mojo/common/mojo_shared_buffer_video_frame_unittest.cc b/media/mojo/common/mojo_shared_buffer_video_frame_unittest.cc
index b52f043..3c10e4f 100644
--- a/media/mojo/common/mojo_shared_buffer_video_frame_unittest.cc
+++ b/media/mojo/common/mojo_shared_buffer_video_frame_unittest.cc
@@ -262,10 +262,10 @@
   gfx::Rect visible_rect(size);
 
   // Create interlaced UV data, which are each 1/4 the size of the Y data.
-  const size_t y_offset = 0;
-  const size_t u_offset =
+  const uint32_t y_offset = 0;
+  const uint32_t u_offset =
       VideoFrame::PlaneSize(format, VideoFrame::kYPlane, size).GetArea();
-  const size_t v_offset =
+  const uint32_t v_offset =
       u_offset + VideoFrame::RowBytes(VideoFrame::kUPlane, format, kWidth);
   const int32_t y_stride =
       VideoFrame::RowBytes(VideoFrame::kYPlane, format, kWidth);
diff --git a/mojo/public/cpp/base/byte_string_unittest.cc b/mojo/public/cpp/base/byte_string_unittest.cc
index db5d8cb..fa39414 100644
--- a/mojo/public/cpp/base/byte_string_unittest.cc
+++ b/mojo/public/cpp/base/byte_string_unittest.cc
@@ -14,7 +14,7 @@
 TEST(ByteStringTest, Test) {
   const std::string kCases[] = {
       "hello",                     // C-string
-      {0xEF, 0xB7, 0xAF},          // invalid UTF-8
+      {'\xEF', '\xB7', '\xAF'},    // invalid UTF-8
       {'h', '\0', 'w', 'd', 'y'},  // embedded null
   };
   for (size_t i = 0; i < base::size(kCases); ++i) {
diff --git a/net/dns/dns_response_unittest.cc b/net/dns/dns_response_unittest.cc
index 00d95d4..96ea77b 100644
--- a/net/dns/dns_response_unittest.cc
+++ b/net/dns/dns_response_unittest.cc
@@ -1225,7 +1225,7 @@
 }
 
 TEST(DnsResponseWriteTest, SingleARecordAnswer) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -1253,14 +1253,15 @@
                        {} /* additional records */, absl::nullopt);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
 }
 
 TEST(DnsResponseWriteTest, SingleARecordAnswerWithFinalDotInName) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -1288,14 +1289,15 @@
                        {} /* additional records */, absl::nullopt);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
 }
 
 TEST(DnsResponseWriteTest, SingleARecordAnswerWithQuestion) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x01,  // number of questions
@@ -1335,7 +1337,8 @@
                        query);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
@@ -1343,7 +1346,7 @@
 
 TEST(DnsResponseWriteTest,
      SingleAnswerWithQuestionConstructedFromSizeInflatedQuery) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x01,  // number of questions
@@ -1399,14 +1402,15 @@
                        query);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
 }
 
 TEST(DnsResponseWriteTest, SingleQuadARecordAnswer) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -1436,7 +1440,8 @@
                        absl::nullopt);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
@@ -1444,7 +1449,7 @@
 
 TEST(DnsResponseWriteTest,
      SingleARecordAnswerWithQuestionAndNsecAdditionalRecord) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x01,  // number of questions
@@ -1499,14 +1504,15 @@
                        {} /* authority_records */, additional_records, query);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
 }
 
 TEST(DnsResponseWriteTest, TwoAnswersWithAAndQuadARecords) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x34,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -1551,14 +1557,15 @@
                        absl::nullopt);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
 }
 
 TEST(DnsResponseWriteTest, AnswerWithAuthorityRecord) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x35,  // ID
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -1586,14 +1593,15 @@
                        {} /* additional records */, absl::nullopt);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
 }
 
 TEST(DnsResponseWriteTest, AnswerWithRcode) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x12, 0x12,  // ID
       0x80, 0x03,  // flags (response with non-existent domain)
       0x00, 0x00,  // number of questions
@@ -1607,7 +1615,8 @@
                        dns_protocol::kRcodeNXDOMAIN);
   ASSERT_NE(nullptr, response.io_buffer());
   EXPECT_TRUE(response.IsValid());
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response(response.io_buffer()->data(),
                               response.io_buffer_size());
   EXPECT_EQ(expected_response, actual_response);
diff --git a/net/socket/ssl_connect_job_unittest.cc b/net/socket/ssl_connect_job_unittest.cc
index 99c8d23f..b665d5f 100644
--- a/net/socket/ssl_connect_job_unittest.cc
+++ b/net/socket/ssl_connect_job_unittest.cc
@@ -760,13 +760,14 @@
 TEST_F(SSLConnectJobTest, SOCKSBasic) {
   for (IoMode io_mode : {SYNCHRONOUS, ASYNC}) {
     SCOPED_TRACE(io_mode);
-    const char kSOCKS5Request[] = {0x05, 0x01, 0x00, 0x03, 0x09, 's',
-                                   'o',  'c',  'k',  's',  'h',  'o',
-                                   's',  't',  0x01, 0xBB};
+    const uint8_t kSOCKS5Request[] = {0x05, 0x01, 0x00, 0x03, 0x09, 's',
+                                      'o',  'c',  'k',  's',  'h',  'o',
+                                      's',  't',  0x01, 0xBB};
 
     MockWrite writes[] = {
         MockWrite(io_mode, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength),
-        MockWrite(io_mode, kSOCKS5Request, base::size(kSOCKS5Request)),
+        MockWrite(io_mode, reinterpret_cast<const char*>(kSOCKS5Request),
+                  base::size(kSOCKS5Request)),
     };
 
     MockRead reads[] = {
@@ -794,12 +795,14 @@
 }
 
 TEST_F(SSLConnectJobTest, SOCKSHasEstablishedConnection) {
-  const char kSOCKS5Request[] = {0x05, 0x01, 0x00, 0x03, 0x09, 's', 'o',  'c',
-                                 'k',  's',  'h',  'o',  's',  't', 0x01, 0xBB};
+  const uint8_t kSOCKS5Request[] = {0x05, 0x01, 0x00, 0x03, 0x09, 's',
+                                    'o',  'c',  'k',  's',  'h',  'o',
+                                    's',  't',  0x01, 0xBB};
 
   MockWrite writes[] = {
       MockWrite(SYNCHRONOUS, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength, 0),
-      MockWrite(SYNCHRONOUS, kSOCKS5Request, base::size(kSOCKS5Request), 3),
+      MockWrite(SYNCHRONOUS, reinterpret_cast<const char*>(kSOCKS5Request),
+                base::size(kSOCKS5Request), 3),
   };
 
   MockRead reads[] = {
diff --git a/net/spdy/spdy_network_transaction_unittest.cc b/net/spdy/spdy_network_transaction_unittest.cc
index c13fbad1..7e937bf3 100644
--- a/net/spdy/spdy_network_transaction_unittest.cc
+++ b/net/spdy/spdy_network_transaction_unittest.cc
@@ -10506,14 +10506,14 @@
       spdy_util_.ConstructSpdyHeaders(1, std::move(headers), DEFAULT_PRIORITY,
                                       /* fin = */ false));
 
-  const char kRawFrameData[] = {
+  uint8_t kRawFrameData[] = {
       0x00, 0x00, 0x03,        // length
       0x0b,                    // type
       0xcc,                    // flags
       0x00, 0x00, 0x00, 0x01,  // stream ID
       'f',  'o',  'o'          // payload
   };
-  spdy::SpdySerializedFrame grease(const_cast<char*>(kRawFrameData),
+  spdy::SpdySerializedFrame grease(reinterpret_cast<char*>(kRawFrameData),
                                    base::size(kRawFrameData),
                                    /* owns_buffer = */ false);
   spdy::SpdySerializedFrame empty_body(
@@ -10565,14 +10565,14 @@
   spdy::SpdySerializedFrame req(spdy_util_.ConstructSpdyPost(
       kDefaultUrl, 1, kUploadDataSize, LOWEST, nullptr, 0));
 
-  const char kRawFrameData[] = {
+  uint8_t kRawFrameData[] = {
       0x00, 0x00, 0x03,        // length
       0x0b,                    // type
       0xcc,                    // flags
       0x00, 0x00, 0x00, 0x01,  // stream ID
       'f',  'o',  'o'          // payload
   };
-  spdy::SpdySerializedFrame grease(const_cast<char*>(kRawFrameData),
+  spdy::SpdySerializedFrame grease(reinterpret_cast<char*>(kRawFrameData),
                                    base::size(kRawFrameData),
                                    /* owns_buffer = */ false);
   spdy::SpdySerializedFrame request_body(
@@ -10625,14 +10625,14 @@
   spdy::SpdySerializedFrame req(spdy_util_.ConstructSpdyPost(
       kDefaultUrl, 1, kUploadDataSize, LOWEST, nullptr, 0));
 
-  const char kRawFrameData[] = {
+  uint8_t kRawFrameData[] = {
       0x00, 0x00, 0x03,        // length
       0x0b,                    // type
       0xcc,                    // flags
       0x00, 0x00, 0x00, 0x01,  // stream ID
       'f',  'o',  'o'          // payload
   };
-  spdy::SpdySerializedFrame grease(const_cast<char*>(kRawFrameData),
+  spdy::SpdySerializedFrame grease(reinterpret_cast<char*>(kRawFrameData),
                                    base::size(kRawFrameData),
                                    /* owns_buffer = */ false);
   spdy::SpdySerializedFrame request_body(
@@ -10771,14 +10771,14 @@
       spdy_util_.ConstructSpdyHeaders(1, std::move(headers), DEFAULT_PRIORITY,
                                       /* fin = */ false));
 
-  const char kRawFrameData[] = {
+  uint8_t kRawFrameData[] = {
       0x00, 0x00, 0x03,        // length
       0x0b,                    // type
       0xcc,                    // flags
       0x00, 0x00, 0x00, 0x01,  // stream ID
       'f',  'o',  'o'          // payload
   };
-  spdy::SpdySerializedFrame grease(const_cast<char*>(kRawFrameData),
+  spdy::SpdySerializedFrame grease(reinterpret_cast<char*>(kRawFrameData),
                                    base::size(kRawFrameData),
                                    /* owns_buffer = */ false);
   spdy::SpdySerializedFrame empty_body(
diff --git a/net/spdy/spdy_session_unittest.cc b/net/spdy/spdy_session_unittest.cc
index 88a8324..b030e79 100644
--- a/net/spdy/spdy_session_unittest.cc
+++ b/net/spdy/spdy_session_unittest.cc
@@ -6033,14 +6033,14 @@
       CombineFrames({&preface, &settings_frame});
 
   // Greased frame sent on stream 0 after initial SETTINGS frame.
-  const char kRawFrameData[] = {
+  uint8_t kRawFrameData[] = {
       0x00, 0x00, 0x03,        // length
       0x0b,                    // type
       0xcc,                    // flags
       0x00, 0x00, 0x00, 0x00,  // stream ID
       'f',  'o',  'o'          // payload
   };
-  spdy::SpdySerializedFrame grease(const_cast<char*>(kRawFrameData),
+  spdy::SpdySerializedFrame grease(reinterpret_cast<char*>(kRawFrameData),
                                    base::size(kRawFrameData),
                                    /* owns_buffer = */ false);
 
diff --git a/net/tools/dafsa/PRESUBMIT.py b/net/tools/dafsa/PRESUBMIT.py
index 253fcbb..e27e5a1 100644
--- a/net/tools/dafsa/PRESUBMIT.py
+++ b/net/tools/dafsa/PRESUBMIT.py
@@ -2,10 +2,12 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-
 """Chromium presubmit script for src/net/tools/dafsa."""
 
 
+USE_PYTHON3 = True
+
+
 def _RunMakeDafsaTests(input_api, output_api):
   """Runs unittest for make_dafsa if any related file has been modified."""
   files = ('net/tools/dafsa/make_dafsa.py',
diff --git a/net/url_request/http_with_dns_over_https_unittest.cc b/net/url_request/http_with_dns_over_https_unittest.cc
index a9b1169d..e2ad0ea 100644
--- a/net/url_request/http_with_dns_over_https_unittest.cc
+++ b/net/url_request/http_with_dns_over_https_unittest.cc
@@ -135,8 +135,8 @@
       char header_data[kHeaderSize];
       base::BigEndianWriter header_writer(header_data, kHeaderSize);
       header_writer.WriteU16(query.id());  // Same ID as before
-      char flags[] = {0x81, 0x80};
-      header_writer.WriteBytes(flags, 2);
+      uint8_t flags[] = {0x81, 0x80};
+      header_writer.WriteBytes(reinterpret_cast<char*>(flags), 2);
       header_writer.WriteU16(1);  // 1 question
       header_writer.WriteU16(1);  // 1 answer
       header_writer.WriteU16(0);  // No authority records
diff --git a/pdf/pdfium/accessibility_unittest.cc b/pdf/pdfium/accessibility_unittest.cc
index 9de49c7..c751e09 100644
--- a/pdf/pdfium/accessibility_unittest.cc
+++ b/pdf/pdfium/accessibility_unittest.cc
@@ -13,6 +13,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/geometry/vector2d.h"
 
@@ -657,10 +658,10 @@
     action_data.selection_start_index.char_index = sel_action.start_char_index;
     action_data.selection_end_index.page_index = sel_action.end_page_index;
     action_data.selection_end_index.char_index = sel_action.end_char_index;
-    gfx::RectF char_bounds = engine->GetCharBounds(sel_action.start_page_index,
-                                                   sel_action.start_char_index);
+    gfx::Rect char_bounds = gfx::ToEnclosingRect(engine->GetCharBounds(
+        sel_action.start_page_index, sel_action.start_char_index));
     action_data.target_rect = {{char_bounds.x(), char_bounds.y() + 400 * index},
-                               {char_bounds.width(), char_bounds.height()}};
+                               char_bounds.size()};
 
     engine->HandleAccessibilityAction(action_data);
     Selection actual_selection;
diff --git a/printing/metafile_skia_unittest.cc b/printing/metafile_skia_unittest.cc
index 519a859..472cd47 100644
--- a/printing/metafile_skia_unittest.cc
+++ b/printing/metafile_skia_unittest.cc
@@ -144,15 +144,18 @@
     // Mark the page with some text using multiple fonts.
     // Use the first font.
     sk_sp<SkTextBlob> text_blob1 = SkTextBlob::MakeFromString("foo", font1);
-    record->push<cc::DrawTextBlobOp>(text_blob1, 0, 0, ++node_id, flags_text);
+    record->push<cc::DrawTextBlobOp>(text_blob1, 0.0f, 0.0f, ++node_id,
+                                     flags_text);
 
     // Use the second font.
     sk_sp<SkTextBlob> text_blob2 = SkTextBlob::MakeFromString("bar", font2);
-    record->push<cc::DrawTextBlobOp>(text_blob2, 0, 0, ++node_id, flags_text);
+    record->push<cc::DrawTextBlobOp>(text_blob2, 0.0f, 0.0f, ++node_id,
+                                     flags_text);
 
     // Reuse the first font again on same page.
     sk_sp<SkTextBlob> text_blob3 = SkTextBlob::MakeFromString("bar", font2);
-    record->push<cc::DrawTextBlobOp>(text_blob3, 0, 0, ++node_id, flags_text);
+    record->push<cc::DrawTextBlobOp>(text_blob3, 0.0f, 0.0f, ++node_id,
+                                     flags_text);
 
     metafile.AppendPage(page_size, std::move(record));
     metafile.AppendSubframeInfo(content_id, base::UnguessableToken::Create(),
diff --git a/remoting/resources/remoting_strings_ar.xtb b/remoting/resources/remoting_strings_ar.xtb
index c585f03..f235a18 100644
--- a/remoting/resources/remoting_strings_ar.xtb
+++ b/remoting/resources/remoting_strings_ar.xtb
@@ -67,6 +67,7 @@
 <translation id="4176825807642096119">رمز الدخول</translation>
 <translation id="4227991223508142681">أداة إدارة حسابات المضيفين</translation>
 <translation id="4240294130679914010">‏أداة إزالة مضيف التوافق مع نظام التشغيل Chrome</translation>
+<translation id="4257751272692708833">‏برنامج إعادة توجيه عناوين URL من خلال "<ph name="PRODUCT_NAME" />"</translation>
 <translation id="4277736576214464567">رمز الدخول غير صالح، يُرجى إعادة المحاولة.</translation>
 <translation id="4281844954008187215">بنود الخدمة</translation>
 <translation id="4405930547258349619">المكتبة الأساسية</translation>
@@ -121,6 +122,7 @@
 <translation id="6612717000975622067">‏إرسال Ctrl-Alt-Del</translation>
 <translation id="6654753848497929428">مشاركة</translation>
 <translation id="677755392401385740">بدأ المضيف للمستخدم: <ph name="HOST_USERNAME" />.</translation>
+<translation id="6902524959760471898">‏تطبيق مساعِد لفتح عنوان URL على برنامج "<ph name="PRODUCT_NAME" />"</translation>
 <translation id="6939719207673461467">عرض/إخفاء لوحة المفاتيح</translation>
 <translation id="6963936880795878952">تم حظر الاتصالات بجهاز الكمبيوتر البعيد مؤقتًا نظرًا لأن شخصًا ما كان يحاول الاتصال به باستخدام رقم تعريف شخصي غير صالح. يُرجى إعادة المحاولة لاحقًا.</translation>
 <translation id="6965382102122355670">حسنًا</translation>
diff --git a/remoting/resources/remoting_strings_sq.xtb b/remoting/resources/remoting_strings_sq.xtb
index c0277d8d..e67de16 100644
--- a/remoting/resources/remoting_strings_sq.xtb
+++ b/remoting/resources/remoting_strings_sq.xtb
@@ -67,6 +67,7 @@
 <translation id="4176825807642096119">Kodi i qasjes</translation>
 <translation id="4227991223508142681">Mjeti i sigurimit të strehuesit</translation>
 <translation id="4240294130679914010">Çinstaluesi i strehuesit të Chromoting</translation>
+<translation id="4257751272692708833">Përcjellësi i URL së <ph name="PRODUCT_NAME" /></translation>
 <translation id="4277736576214464567">Kodi i qasjes është i pavlefshëm. Provo sërish.</translation>
 <translation id="4281844954008187215">Kushtet e shërbimit</translation>
 <translation id="4405930547258349619">Biblioteka kryesore</translation>
@@ -121,6 +122,7 @@
 <translation id="6612717000975622067">Dërgo Ctrl-Alt-Del</translation>
 <translation id="6654753848497929428">Ndaj</translation>
 <translation id="677755392401385740">Strehuesi u nis për përdoruesin: <ph name="HOST_USERNAME" />.</translation>
+<translation id="6902524959760471898">Aplikacion ndihmës për të hapur një URL te klienti <ph name="PRODUCT_NAME" /></translation>
 <translation id="6939719207673461467">Shfaq/fshih tastierën.</translation>
 <translation id="6963936880795878952">Lidhjet me kompjuterin në largësi janë të bllokuara përkohësisht sepse dikush po përpiqej të lidhej me të nëpërmjet një kodi PIN të pavlefshëm. Provo përsëri më vonë.</translation>
 <translation id="6965382102122355670">Në rregull</translation>
diff --git a/services/network/BUILD.gn b/services/network/BUILD.gn
index ad15938..f7f4a2a7 100644
--- a/services/network/BUILD.gn
+++ b/services/network/BUILD.gn
@@ -30,8 +30,6 @@
     "cors/preflight_controller.h",
     "cors/preflight_result.cc",
     "cors/preflight_result.h",
-    "crash_keys.cc",
-    "crash_keys.h",
     "crl_set_distributor.cc",
     "crl_set_distributor.h",
     "data_pipe_element_reader.cc",
diff --git a/services/network/cors/cors_url_loader_factory.cc b/services/network/cors/cors_url_loader_factory.cc
index 7a77dba..254e8ef1 100644
--- a/services/network/cors/cors_url_loader_factory.cc
+++ b/services/network/cors/cors_url_loader_factory.cc
@@ -7,12 +7,9 @@
 #include <utility>
 
 #include "base/bind.h"
-#include "base/debug/crash_logging.h"
-#include "base/debug/dump_without_crashing.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/stl_util.h"
-#include "base/types/strong_alias.h"
 #include "mojo/public/cpp/bindings/message.h"
 #include "mojo/public/cpp/bindings/remote.h"
 #include "net/base/load_flags.h"
@@ -20,7 +17,6 @@
 #include "net/http/http_util.h"
 #include "services/network/cors/cors_url_loader.h"
 #include "services/network/cors/preflight_controller.h"
-#include "services/network/crash_keys.h"
 #include "services/network/network_context.h"
 #include "services/network/network_service.h"
 #include "services/network/public/cpp/cors/cors.h"
@@ -245,7 +241,7 @@
     const ResourceRequest& resource_request,
     mojo::PendingRemote<mojom::URLLoaderClient> client,
     const net::MutableNetworkTrafficAnnotationTag& traffic_annotation) {
-  debug::ScopedRequestCrashKeys request_crash_keys(resource_request);
+  debug::ScopedResourceRequestCrashKeys request_crash_keys(resource_request);
 
   if (!IsValidRequest(resource_request, options)) {
     mojo::Remote<mojom::URLLoaderClient>(std::move(client))
diff --git a/services/network/crash_keys.cc b/services/network/crash_keys.cc
deleted file mode 100644
index 3b14982..0000000
--- a/services/network/crash_keys.cc
+++ /dev/null
@@ -1,54 +0,0 @@
-// Copyright 2019 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "services/network/crash_keys.h"
-
-#include "base/stl_util.h"
-#include "base/strings/string_number_conversions.h"
-#include "services/network/public/cpp/resource_request.h"
-#include "url/gurl.h"
-
-namespace network {
-namespace debug {
-
-namespace {
-
-base::debug::CrashKeyString* GetRequestUrlCrashKey() {
-  static auto* crash_key = base::debug::AllocateCrashKeyString(
-      "request_url", base::debug::CrashKeySize::Size256);
-  return crash_key;
-}
-
-base::debug::CrashKeyString* GetRequestInitiatorCrashKey() {
-  static auto* crash_key = base::debug::AllocateCrashKeyString(
-      "request_initiator", base::debug::CrashKeySize::Size64);
-  return crash_key;
-}
-
-base::debug::CrashKeyString* GetRequestResourceTypeCrashKey() {
-  static auto* crash_key = base::debug::AllocateCrashKeyString(
-      "request_resource_type", base::debug::CrashKeySize::Size32);
-  return crash_key;
-}
-
-}  // namespace
-
-base::debug::CrashKeyString* GetRequestInitiatorOriginLockCrashKey() {
-  static auto* crash_key = base::debug::AllocateCrashKeyString(
-      "request_initiator_origin_lock", base::debug::CrashKeySize::Size64);
-  return crash_key;
-}
-
-ScopedRequestCrashKeys::ScopedRequestCrashKeys(
-    const network::ResourceRequest& request)
-    : url_(GetRequestUrlCrashKey(), request.url.possibly_invalid_spec()),
-      request_initiator_(GetRequestInitiatorCrashKey(),
-                         base::OptionalOrNullptr(request.request_initiator)),
-      resource_type_(GetRequestResourceTypeCrashKey(),
-                     base::NumberToString(request.resource_type)) {}
-
-ScopedRequestCrashKeys::~ScopedRequestCrashKeys() = default;
-
-}  // namespace debug
-}  // namespace network
diff --git a/services/network/crash_keys.h b/services/network/crash_keys.h
deleted file mode 100644
index 8d3da77..0000000
--- a/services/network/crash_keys.h
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2019 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef SERVICES_NETWORK_CRASH_KEYS_H_
-#define SERVICES_NETWORK_CRASH_KEYS_H_
-
-#include "base/debug/crash_logging.h"
-#include "url/origin.h"
-
-namespace network {
-
-struct ResourceRequest;
-
-namespace debug {
-
-// TODO(lukasza): Move to //services/network/public/cpp to enable reuse outside
-// of //services/network (e.g. see https://crrev.com/c/2923326).
-base::debug::CrashKeyString* GetRequestInitiatorOriginLockCrashKey();
-
-class ScopedRequestCrashKeys {
- public:
-  ScopedRequestCrashKeys(const network::ResourceRequest& request);
-  ~ScopedRequestCrashKeys();
-
-  ScopedRequestCrashKeys(const ScopedRequestCrashKeys&) = delete;
-  ScopedRequestCrashKeys& operator=(const ScopedRequestCrashKeys&) = delete;
-
- private:
-  base::debug::ScopedCrashKeyString url_;
-  url::debug::ScopedOriginCrashKey request_initiator_;
-  base::debug::ScopedCrashKeyString resource_type_;
-};
-
-}  // namespace debug
-}  // namespace network
-
-#endif  // SERVICES_NETWORK_CRASH_KEYS_H_
diff --git a/services/network/mdns_responder_unittest.cc b/services/network/mdns_responder_unittest.cc
index 451c8f5..755a592 100644
--- a/services/network/mdns_responder_unittest.cc
+++ b/services/network/mdns_responder_unittest.cc
@@ -212,7 +212,7 @@
 // the NSEC records are placed in the Answer section with the address records in
 // the Answer section.
 TEST(CreateMdnsResponseTest, SingleARecordAnswer) {
-  const char response_data[]{
+  const uint8_t response_data[]{
       0x00, 0x00,  // mDNS response ID mus be zero.
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -240,7 +240,8 @@
                                // length 1, bitmap with bit 1 set
   };
 
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response = CreateResolutionResponse(
       kDefaultTtl,
       {{"www.example.com", net::IPAddress(0xc0, 0xa8, 0x00, 0x01)}});
@@ -248,7 +249,7 @@
 }
 
 TEST(CreateMdnsResponseTest, SingleARecordGoodbye) {
-  const char response_data[]{
+  const uint8_t response_data[]{
       0x00, 0x00,  // mDNS response ID mus be zero.
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -265,7 +266,8 @@
       0xc0, 0xa8, 0x00, 0x01,  // 192.168.0.1
   };
 
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response = CreateResolutionResponse(
       base::TimeDelta(),
       {{"www.example.com", net::IPAddress(0xc0, 0xa8, 0x00, 0x01)}});
@@ -273,7 +275,7 @@
 }
 
 TEST(CreateMdnsResponseTest, SingleQuadARecordAnswer) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x00, 0x00,  // mDNS response ID mus be zero.
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -300,7 +302,8 @@
       0x08,  // type bit map of type AAAA: window block 0, bitmap
              // length 4, bitmap with bit 28 set
   };
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response = CreateResolutionResponse(
       kDefaultTtl,
       {{"example.org",
@@ -310,7 +313,7 @@
 }
 
 TEST(CreateMdnsResponseTest, SingleNsecRecordAnswer) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x00, 0x00,  // mDNS response ID mus be zero.
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -337,7 +340,8 @@
       0x00, 0x04,              // rdlength, 32 bits
       0xc0, 0xa8, 0x00, 0x01,  // 192.168.0.1
   };
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response = CreateNegativeResponse(
       {{"www.example.com", net::IPAddress(0xc0, 0xa8, 0x00, 0x01)}});
   EXPECT_EQ(expected_response, actual_response);
@@ -345,7 +349,7 @@
 
 TEST(CreateMdnsResponseTest,
      SingleTxtRecordAnswerToMdnsNameGeneratorServiceQuery) {
-  const char response_data[] = {
+  const uint8_t response_data[] = {
       0x00, 0x00,  // mDNS response ID mus be zero.
       0x84, 0x00,  // flags, response with authoritative answer
       0x00, 0x00,  // number of questions
@@ -365,7 +369,8 @@
       'a',  'l',  0x15, 'n',  'a',  'm', 'e',  '1', '=', 'w', 'w', 'w',
       '.',  'e',  'x',  'a',  'm',  'p', 'l',  'e', '.', 'c', 'o', 'm',
       0x09, 't',  'x',  't',  'v',  'e', 'r',  's', '=', '1'};
-  std::string expected_response(response_data, sizeof(response_data));
+  std::string expected_response(reinterpret_cast<const char*>(response_data),
+                                sizeof(response_data));
   std::string actual_response = CreateResponseToMdnsNameGeneratorServiceQuery(
       kDefaultTtl, {"1.local", "www.example.com"});
   EXPECT_EQ(expected_response, actual_response);
diff --git a/services/network/public/cpp/initiator_lock_compatibility.cc b/services/network/public/cpp/initiator_lock_compatibility.cc
index 5e941186..7430c3b 100644
--- a/services/network/public/cpp/initiator_lock_compatibility.cc
+++ b/services/network/public/cpp/initiator_lock_compatibility.cc
@@ -17,6 +17,16 @@
 
 namespace network {
 
+namespace {
+
+base::debug::CrashKeyString* GetRequestInitiatorOriginLockCrashKey() {
+  static auto* crash_key = base::debug::AllocateCrashKeyString(
+      "request_initiator_origin_lock", base::debug::CrashKeySize::Size64);
+  return crash_key;
+}
+
+}  // namespace
+
 InitiatorLockCompatibility VerifyRequestInitiatorLock(
     const absl::optional<url::Origin>& request_initiator_origin_lock,
     const absl::optional<url::Origin>& request_initiator) {
@@ -64,4 +74,17 @@
   return request_initiator.value();
 }
 
+namespace debug {
+
+ScopedRequestInitiatorOriginLockCrashKey::
+    ScopedRequestInitiatorOriginLockCrashKey(
+        const absl::optional<url::Origin>& request_initiator_origin_lock)
+    : ScopedOriginCrashKey(
+          GetRequestInitiatorOriginLockCrashKey(),
+          base::OptionalOrNullptr(request_initiator_origin_lock)) {}
+
+ScopedRequestInitiatorOriginLockCrashKey::
+    ~ScopedRequestInitiatorOriginLockCrashKey() = default;
+
+}  // namespace debug
 }  // namespace network
diff --git a/services/network/public/cpp/initiator_lock_compatibility.h b/services/network/public/cpp/initiator_lock_compatibility.h
index 6e8e047..3e19aeef 100644
--- a/services/network/public/cpp/initiator_lock_compatibility.h
+++ b/services/network/public/cpp/initiator_lock_compatibility.h
@@ -73,15 +73,31 @@
 // network::ResourceRequest::request_initiator which may be initially set in an
 // untrustworthy process (eg: renderer process).
 //
-// TODO(lukasza): Remove this function if https://crrev.com/c/1661114 sticks
-// (i.e. if ResourceRequest::request_initiator is sanitized and made trustworthy
-// by CorsURLLoaderFactory::CreateLoaderAndStart and IsValidRequest). Once we
-// remove this, this header can be moved to non-public directory.
+// TODO(https://crbug.com/920634): Remove this function, because
+// ResourceRequest::request_initator should now be trustworthy *within the
+// NetworkService* (see r888724).
 COMPONENT_EXPORT(NETWORK_CPP)
 url::Origin GetTrustworthyInitiator(
     const absl::optional<url::Origin>& request_initiator_origin_lock,
     const absl::optional<url::Origin>& request_initiator);
 
+namespace debug {
+
+class COMPONENT_EXPORT(NETWORK_CPP) ScopedRequestInitiatorOriginLockCrashKey
+    : public url::debug::ScopedOriginCrashKey {
+ public:
+  explicit ScopedRequestInitiatorOriginLockCrashKey(
+      const absl::optional<url::Origin>& request_initiator_origin_lock);
+  ~ScopedRequestInitiatorOriginLockCrashKey();
+
+  ScopedRequestInitiatorOriginLockCrashKey(
+      const ScopedRequestInitiatorOriginLockCrashKey&) = delete;
+  ScopedRequestInitiatorOriginLockCrashKey& operator=(
+      const ScopedRequestInitiatorOriginLockCrashKey&) = delete;
+};
+
+}  // namespace debug
+
 }  // namespace network
 
 #endif  // SERVICES_NETWORK_PUBLIC_CPP_INITIATOR_LOCK_COMPATIBILITY_H_
diff --git a/services/network/public/cpp/resource_request.cc b/services/network/public/cpp/resource_request.cc
index ccb92aa..da4a767 100644
--- a/services/network/public/cpp/resource_request.cc
+++ b/services/network/public/cpp/resource_request.cc
@@ -4,6 +4,7 @@
 
 #include "services/network/public/cpp/resource_request.h"
 
+#include "base/strings/string_number_conversions.h"
 #include "mojo/public/cpp/bindings/pending_remote.h"
 #include "net/base/load_flags.h"
 #include "services/network/public/mojom/cookie_access_observer.mojom.h"
@@ -76,6 +77,24 @@
          (lhs && rhs && lhs->EqualsForTesting(*rhs));  // IN-TEST
 }
 
+base::debug::CrashKeyString* GetRequestUrlCrashKey() {
+  static auto* crash_key = base::debug::AllocateCrashKeyString(
+      "request_url", base::debug::CrashKeySize::Size256);
+  return crash_key;
+}
+
+base::debug::CrashKeyString* GetRequestInitiatorCrashKey() {
+  static auto* crash_key = base::debug::AllocateCrashKeyString(
+      "request_initiator", base::debug::CrashKeySize::Size64);
+  return crash_key;
+}
+
+base::debug::CrashKeyString* GetRequestResourceTypeCrashKey() {
+  static auto* crash_key = base::debug::AllocateCrashKeyString(
+      "request_resource_type", base::debug::CrashKeySize::Size32);
+  return crash_key;
+}
+
 }  // namespace
 
 ResourceRequest::TrustedParams::TrustedParams() = default;
@@ -269,4 +288,17 @@
   return net::ReferrerPolicy::CLEAR_ON_TRANSITION_FROM_SECURE_TO_INSECURE;
 }
 
+namespace debug {
+
+ScopedResourceRequestCrashKeys::ScopedResourceRequestCrashKeys(
+    const network::ResourceRequest& request)
+    : url_(GetRequestUrlCrashKey(), request.url.possibly_invalid_spec()),
+      request_initiator_(GetRequestInitiatorCrashKey(),
+                         base::OptionalOrNullptr(request.request_initiator)),
+      resource_type_(GetRequestResourceTypeCrashKey(),
+                     base::NumberToString(request.resource_type)) {}
+
+ScopedResourceRequestCrashKeys::~ScopedResourceRequestCrashKeys() = default;
+
+}  // namespace debug
 }  // namespace network
diff --git a/services/network/public/cpp/resource_request.h b/services/network/public/cpp/resource_request.h
index e68296f..d9abcc8 100644
--- a/services/network/public/cpp/resource_request.h
+++ b/services/network/public/cpp/resource_request.h
@@ -9,6 +9,7 @@
 #include <string>
 
 #include "base/component_export.h"
+#include "base/debug/crash_logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/unguessable_token.h"
 #include "mojo/public/cpp/bindings/remote.h"
@@ -178,6 +179,26 @@
 net::ReferrerPolicy ReferrerPolicyForUrlRequest(
     mojom::ReferrerPolicy referrer_policy);
 
+namespace debug {
+
+class COMPONENT_EXPORT(NETWORK_CPP_BASE) ScopedResourceRequestCrashKeys {
+ public:
+  explicit ScopedResourceRequestCrashKeys(
+      const network::ResourceRequest& request);
+  ~ScopedResourceRequestCrashKeys();
+
+  ScopedResourceRequestCrashKeys(const ScopedResourceRequestCrashKeys&) =
+      delete;
+  ScopedResourceRequestCrashKeys& operator=(
+      const ScopedResourceRequestCrashKeys&) = delete;
+
+ private:
+  base::debug::ScopedCrashKeyString url_;
+  url::debug::ScopedOriginCrashKey request_initiator_;
+  base::debug::ScopedCrashKeyString resource_type_;
+};
+
+}  // namespace debug
 }  // namespace network
 
 #endif  // SERVICES_NETWORK_PUBLIC_CPP_RESOURCE_REQUEST_H_
diff --git a/services/viz/PRESUBMIT.py b/services/viz/PRESUBMIT.py
index 2d7842c..fc7c142 100644
--- a/services/viz/PRESUBMIT.py
+++ b/services/viz/PRESUBMIT.py
@@ -4,6 +4,9 @@
 
 """Top-level presubmit script for services/viz."""
 
+USE_PYTHON3 = True
+
+
 def CheckChangeOnUpload(input_api, output_api):
   import sys
   original_sys_path = sys.path
diff --git a/storage/browser/file_system/dragged_file_util_unittest.cc b/storage/browser/file_system/dragged_file_util_unittest.cc
index 2b4708df..b475faa 100644
--- a/storage/browser/file_system/dragged_file_util_unittest.cc
+++ b/storage/browser/file_system/dragged_file_util_unittest.cc
@@ -12,11 +12,11 @@
 
 #include "base/check.h"
 #include "base/containers/queue.h"
+#include "base/cxx17_backports.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "base/test/task_environment.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
diff --git a/storage/browser/file_system/external_mount_points_unittest.cc b/storage/browser/file_system/external_mount_points_unittest.cc
index e3df989..f1cc824 100644
--- a/storage/browser/file_system/external_mount_points_unittest.cc
+++ b/storage/browser/file_system/external_mount_points_unittest.cc
@@ -8,9 +8,9 @@
 
 #include <string>
 
+#include "base/cxx17_backports.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "storage/browser/file_system/file_system_url.h"
 #include "storage/common/file_system/file_system_mount_option.h"
 #include "testing/gtest/include/gtest/gtest.h"
diff --git a/storage/browser/file_system/file_system_context_unittest.cc b/storage/browser/file_system/file_system_context_unittest.cc
index 1f2a6fb..0c8fb8b0 100644
--- a/storage/browser/file_system/file_system_context_unittest.cc
+++ b/storage/browser/file_system/file_system_context_unittest.cc
@@ -6,10 +6,10 @@
 
 #include <stddef.h>
 
+#include "base/cxx17_backports.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
-#include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
diff --git a/storage/browser/file_system/file_system_operation_impl_unittest.cc b/storage/browser/file_system/file_system_operation_impl_unittest.cc
index 6f20f0b..bf0a14f 100644
--- a/storage/browser/file_system/file_system_operation_impl_unittest.cc
+++ b/storage/browser/file_system/file_system_operation_impl_unittest.cc
@@ -12,6 +12,7 @@
 #include <utility>
 
 #include "base/bind.h"
+#include "base/cxx17_backports.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
@@ -19,7 +20,6 @@
 #include "base/memory/scoped_refptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
-#include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
diff --git a/storage/browser/file_system/file_system_quota_client_unittest.cc b/storage/browser/file_system/file_system_quota_client_unittest.cc
index d3d7033c..9c6563a 100644
--- a/storage/browser/file_system/file_system_quota_client_unittest.cc
+++ b/storage/browser/file_system/file_system_quota_client_unittest.cc
@@ -8,11 +8,11 @@
 #include <vector>
 
 #include "base/bind.h"
+#include "base/cxx17_backports.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
-#include "base/stl_util.h"
 #include "base/test/task_environment.h"
 #include "storage/browser/file_system/file_system_context.h"
 #include "storage/browser/file_system/file_system_quota_client.h"
diff --git a/storage/browser/file_system/file_system_url_unittest.cc b/storage/browser/file_system/file_system_url_unittest.cc
index 8a60e905..f9e41401 100644
--- a/storage/browser/file_system/file_system_url_unittest.cc
+++ b/storage/browser/file_system/file_system_url_unittest.cc
@@ -8,9 +8,9 @@
 
 #include <utility>
 
+#include "base/cxx17_backports.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "storage/common/file_system/file_system_types.h"
 #include "storage/common/file_system/file_system_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
diff --git a/storage/browser/file_system/file_writer_delegate_unittest.cc b/storage/browser/file_system/file_writer_delegate_unittest.cc
index e5aaa571..df878017 100644
--- a/storage/browser/file_system/file_writer_delegate_unittest.cc
+++ b/storage/browser/file_system/file_writer_delegate_unittest.cc
@@ -10,13 +10,13 @@
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
+#include "base/cxx17_backports.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
-#include "base/stl_util.h"
 #include "base/test/task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "net/base/io_buffer.h"
diff --git a/storage/browser/file_system/isolated_context_unittest.cc b/storage/browser/file_system/isolated_context_unittest.cc
index b8544bd..8c514f11 100644
--- a/storage/browser/file_system/isolated_context_unittest.cc
+++ b/storage/browser/file_system/isolated_context_unittest.cc
@@ -6,8 +6,8 @@
 
 #include <string>
 
+#include "base/cxx17_backports.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "storage/browser/file_system/file_system_url.h"
 #include "storage/browser/file_system/isolated_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
diff --git a/storage/browser/file_system/obfuscated_file_util_unittest.cc b/storage/browser/file_system/obfuscated_file_util_unittest.cc
index 8c76db3..5681e95 100644
--- a/storage/browser/file_system/obfuscated_file_util_unittest.cc
+++ b/storage/browser/file_system/obfuscated_file_util_unittest.cc
@@ -14,6 +14,7 @@
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
+#include "base/cxx17_backports.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ -21,7 +22,6 @@
 #include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "base/run_loop.h"
-#include "base/stl_util.h"
 #include "base/test/task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
diff --git a/storage/browser/file_system/sandbox_directory_database.cc b/storage/browser/file_system/sandbox_directory_database.cc
index 602dfc0..c4976a5 100644
--- a/storage/browser/file_system/sandbox_directory_database.cc
+++ b/storage/browser/file_system/sandbox_directory_database.cc
@@ -13,13 +13,13 @@
 #include <set>
 
 #include "base/containers/stack.h"
+#include "base/cxx17_backports.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/pickle.h"
-#include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "storage/browser/file_system/file_system_usage_cache.h"
diff --git a/storage/browser/file_system/sandbox_file_system_backend_unittest.cc b/storage/browser/file_system/sandbox_file_system_backend_unittest.cc
index cc8d011..d4f909b 100644
--- a/storage/browser/file_system/sandbox_file_system_backend_unittest.cc
+++ b/storage/browser/file_system/sandbox_file_system_backend_unittest.cc
@@ -11,11 +11,11 @@
 #include <vector>
 
 #include "base/bind.h"
+#include "base/cxx17_backports.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
-#include "base/stl_util.h"
 #include "base/test/scoped_feature_list.h"
 #include "base/test/task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
diff --git a/storage/browser/file_system/sandbox_origin_database_unittest.cc b/storage/browser/file_system/sandbox_origin_database_unittest.cc
index f9b1aa4e..5b99ecd 100644
--- a/storage/browser/file_system/sandbox_origin_database_unittest.cc
+++ b/storage/browser/file_system/sandbox_origin_database_unittest.cc
@@ -11,12 +11,12 @@
 #include <string>
 #include <vector>
 
+#include "base/cxx17_backports.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "storage/browser/file_system/sandbox_origin_database.h"
 #include "storage/browser/test/sandbox_database_test_helper.h"
 #include "storage/common/file_system/file_system_util.h"
diff --git a/storage/browser/test/file_system_test_file_set.cc b/storage/browser/test/file_system_test_file_set.cc
index 86662bf1..5127c787 100644
--- a/storage/browser/test/file_system_test_file_set.cc
+++ b/storage/browser/test/file_system_test_file_set.cc
@@ -9,11 +9,11 @@
 #include <limits>
 #include <string>
 
+#include "base/cxx17_backports.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/rand_util.h"
-#include "base/stl_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace storage {
diff --git a/storage/common/database/database_identifier.cc b/storage/common/database/database_identifier.cc
index 0de222a..bee901f 100644
--- a/storage/common/database/database_identifier.cc
+++ b/storage/common/database/database_identifier.cc
@@ -6,8 +6,8 @@
 
 #include <stddef.h>
 
+#include "base/cxx17_backports.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "url/url_canon.h"
diff --git a/storage/common/database/database_identifier_unittest.cc b/storage/common/database/database_identifier_unittest.cc
index 18315f3..e85cbc9 100644
--- a/storage/common/database/database_identifier_unittest.cc
+++ b/storage/common/database/database_identifier_unittest.cc
@@ -6,8 +6,8 @@
 
 #include <stddef.h>
 
+#include "base/cxx17_backports.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 #include "url/origin.h"
diff --git a/testing/PRESUBMIT.py b/testing/PRESUBMIT.py
index bce5429..77254ae 100644
--- a/testing/PRESUBMIT.py
+++ b/testing/PRESUBMIT.py
@@ -8,6 +8,8 @@
 for more details on the presubmit API built into depot_tools.
 """
 
+USE_PYTHON3 = True
+
 
 def CommonChecks(input_api, output_api):
   output = []
diff --git a/testing/buildbot/filters/PRESUBMIT.py b/testing/buildbot/filters/PRESUBMIT.py
index 25a7cac..7bc1524 100644
--- a/testing/buildbot/filters/PRESUBMIT.py
+++ b/testing/buildbot/filters/PRESUBMIT.py
@@ -11,6 +11,9 @@
 import re
 
 
+USE_PYTHON3 = True
+
+
 def _CheckFilterFileFormat(input_api, output_api):
   """This ensures all modified filter files are free of common syntax errors.
 
diff --git a/testing/merge_scripts/code_coverage/PRESUBMIT.py b/testing/merge_scripts/code_coverage/PRESUBMIT.py
index dac67ed..80c3240 100644
--- a/testing/merge_scripts/code_coverage/PRESUBMIT.py
+++ b/testing/merge_scripts/code_coverage/PRESUBMIT.py
@@ -8,6 +8,8 @@
 for more details about the presubmit API built into depot_tools.
 """
 
+USE_PYTHON3 = True
+
 def CommonChecks(input_api, output_api):
   return input_api.canned_checks.RunUnitTestsInDirectory(
       input_api, output_api, '.', [ r'^.+_test\.py$'])
diff --git a/testing/variations/PRESUBMIT.py b/testing/variations/PRESUBMIT.py
index 2ffe54a..448b884 100644
--- a/testing/variations/PRESUBMIT.py
+++ b/testing/variations/PRESUBMIT.py
@@ -8,11 +8,14 @@
 """
 
 import copy
+import io
 import json
 import sys
 
 from collections import OrderedDict
 
+USE_PYTHON3 = True
+
 VALID_EXPERIMENT_KEYS = [
     'name', 'forcing_flag', 'params', 'enable_features', 'disable_features',
     'min_os_version', '//0', '//1', '//2', '//3', '//4', '//5', '//6', '//7',
@@ -77,7 +80,7 @@
                                                ('experiments', [])])
       for experiment in experiment_config['experiments']:
         ordered_experiment = OrderedDict()
-        for index in xrange(0, 10):
+        for index in range(0, 10):
           comment_key = '//' + str(index)
           if comment_key in experiment:
             ordered_experiment[comment_key] = experiment[comment_key]
@@ -317,9 +320,10 @@
 
 
 def main(argv):
-  content = open(argv[1]).read()
+  with io.open(argv[1], encoding='utf-8') as f:
+    content = f.read()
   pretty = PrettyPrint(content)
-  open(argv[1], 'wb').write(pretty)
+  io.open(argv[1], 'wb').write(pretty.encode('utf-8'))
 
 
 if __name__ == '__main__':
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index c9c7260..5920f60 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -6345,7 +6345,8 @@
                 {
                     "name": "Enabled",
                     "params": {
-                        "en_site_id": "FJ8K567X60ugnJ3q1cK0WZ5aJGMC",
+                        "en_site_id": "JJjyyFs1g0ugnJ3q1cK0QHY2qJGX",
+                        "no-sandbox": "true",
                         "probability": "1.0",
                         "survey": "settings-privacy"
                     },
diff --git a/third_party/android_deps/BUILD.gn b/third_party/android_deps/BUILD.gn
index 087470e..d31ac9dd 100644
--- a/third_party/android_deps/BUILD.gn
+++ b/third_party/android_deps/BUILD.gn
@@ -138,7 +138,7 @@
   # This target does not come with most of its dependencies and is
   # only meant to be used by the resources shrinker. If you wish to use
   # this for other purposes, change buildCompileNoDeps in build.gradle.
-  visibility = [ "//build/android/gyp/resources_shrinker:*" ]
+  visibility = [ "//build/android/unused_resources:*" ]
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
@@ -150,7 +150,7 @@
   # This target does not come with most of its dependencies and is
   # only meant to be used by the resources shrinker. If you wish to use
   # this for other purposes, change buildCompileNoDeps in build.gradle.
-  visibility = [ "//build/android/gyp/resources_shrinker:*" ]
+  visibility = [ "//build/android/unused_resources:*" ]
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
@@ -162,7 +162,7 @@
   # This target does not come with most of its dependencies and is
   # only meant to be used by the resources shrinker. If you wish to use
   # this for other purposes, change buildCompileNoDeps in build.gradle.
-  visibility = [ "//build/android/gyp/resources_shrinker:*" ]
+  visibility = [ "//build/android/unused_resources:*" ]
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
@@ -235,7 +235,7 @@
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_google_errorprone_error_prone_annotation_java") {
-  jar_path = "libs/com_google_errorprone_error_prone_annotation/error_prone_annotation-2.4.0.jar"
+  jar_path = "libs/com_google_errorprone_error_prone_annotation/error_prone_annotation-2.7.1.jar"
   output_name = "com_google_errorprone_error_prone_annotation"
   enable_bytecode_checks = false
   deps = [ ":com_google_guava_guava_java" ]
@@ -243,7 +243,7 @@
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_google_errorprone_error_prone_annotations_java") {
-  jar_path = "libs/com_google_errorprone_error_prone_annotations/error_prone_annotations-2.4.0.jar"
+  jar_path = "libs/com_google_errorprone_error_prone_annotations/error_prone_annotations-2.7.1.jar"
   output_name = "com_google_errorprone_error_prone_annotations"
   supports_android = true
 
@@ -253,7 +253,7 @@
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_google_errorprone_error_prone_check_api_java") {
-  jar_path = "libs/com_google_errorprone_error_prone_check_api/error_prone_check_api-2.4.0.jar"
+  jar_path = "libs/com_google_errorprone_error_prone_check_api/error_prone_check_api-2.7.1.jar"
   output_name = "com_google_errorprone_error_prone_check_api"
   enable_bytecode_checks = false
   deps = [
@@ -264,7 +264,7 @@
     ":com_google_errorprone_error_prone_annotation_java",
     ":com_google_errorprone_error_prone_annotations_java",
     ":com_google_errorprone_javac_java",
-    ":com_googlecode_java_diff_utils_diffutils_java",
+    ":io_github_java_diff_utils_java_diff_utils_java",
     ":org_checkerframework_dataflow_shaded_java",
   ]
 }
@@ -272,7 +272,7 @@
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_google_errorprone_error_prone_core_java") {
   jar_path =
-      "libs/com_google_errorprone_error_prone_core/error_prone_core-2.4.0.jar"
+      "libs/com_google_errorprone_error_prone_core/error_prone_core-2.7.1.jar"
   output_name = "com_google_errorprone_error_prone_core"
   enable_bytecode_checks = false
   deps = [
@@ -290,7 +290,6 @@
     ":com_google_protobuf_protobuf_java_java",
     ":org_checkerframework_dataflow_shaded_java",
     ":org_pcollections_pcollections_java",
-    ":org_threeten_threeten_extra_java",
   ]
 }
 
@@ -353,16 +352,6 @@
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
-java_prebuilt("com_googlecode_java_diff_utils_diffutils_java") {
-  jar_path = "libs/com_googlecode_java_diff_utils_diffutils/diffutils-1.3.0.jar"
-  output_name = "com_googlecode_java_diff_utils_diffutils"
-  supports_android = true
-
-  # Needed to break dependency cycle for errorprone_plugin_java.
-  enable_bytecode_checks = false
-}
-
-# This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_squareup_javapoet_java") {
   jar_path = "libs/com_squareup_javapoet/javapoet-1.13.0.jar"
   output_name = "com_squareup_javapoet"
@@ -442,7 +431,7 @@
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_github_ben_manes_caffeine_caffeine_java") {
-  jar_path = "libs/com_github_ben_manes_caffeine_caffeine/caffeine-2.8.0.jar"
+  jar_path = "libs/com_github_ben_manes_caffeine_caffeine/caffeine-2.8.8.jar"
   output_name = "com_github_ben_manes_caffeine_caffeine"
   enable_bytecode_checks = false
 
@@ -562,7 +551,7 @@
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("com_google_errorprone_error_prone_type_annotations_java") {
-  jar_path = "libs/com_google_errorprone_error_prone_type_annotations/error_prone_type_annotations-2.4.0.jar"
+  jar_path = "libs/com_google_errorprone_error_prone_type_annotations/error_prone_type_annotations-2.7.1.jar"
   output_name = "com_google_errorprone_error_prone_type_annotations"
   enable_bytecode_checks = false
 
@@ -622,6 +611,22 @@
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
+java_prebuilt("io_github_java_diff_utils_java_diff_utils_java") {
+  jar_path =
+      "libs/io_github_java_diff_utils_java_diff_utils/java-diff-utils-4.0.jar"
+  output_name = "io_github_java_diff_utils_java_diff_utils"
+  enable_bytecode_checks = false
+
+  # To remove visibility constraint, add this dependency to
+  # //third_party/android_deps/build.gradle.
+  visibility = [
+    ":*",
+    "//third_party/androidx:*",
+  ]
+  deps = [ ":org_eclipse_jgit_org_eclipse_jgit_java" ]
+}
+
+# This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("net_ltgt_gradle_incap_incap_java") {
   jar_path = "libs/net_ltgt_gradle_incap_incap/incap-0.2.jar"
   output_name = "net_ltgt_gradle_incap_incap"
@@ -637,7 +642,7 @@
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("org_checkerframework_checker_qual_java") {
-  jar_path = "libs/org_checkerframework_checker_qual/checker-qual-3.5.0.jar"
+  jar_path = "libs/org_checkerframework_checker_qual/checker-qual-3.8.0.jar"
   output_name = "org_checkerframework_checker_qual"
   enable_bytecode_checks = false
 
@@ -652,7 +657,7 @@
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("org_checkerframework_dataflow_shaded_java") {
   jar_path =
-      "libs/org_checkerframework_dataflow_shaded/dataflow-shaded-3.1.2.jar"
+      "libs/org_checkerframework_dataflow_shaded/dataflow-shaded-3.11.0.jar"
   output_name = "org_checkerframework_dataflow_shaded"
   enable_bytecode_checks = false
 
@@ -665,6 +670,20 @@
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
+java_prebuilt("org_eclipse_jgit_org_eclipse_jgit_java") {
+  jar_path = "libs/org_eclipse_jgit_org_eclipse_jgit/org.eclipse.jgit-4.4.1.201607150455-r.jar"
+  output_name = "org_eclipse_jgit_org_eclipse_jgit"
+  enable_bytecode_checks = false
+
+  # To remove visibility constraint, add this dependency to
+  # //third_party/android_deps/build.gradle.
+  visibility = [
+    ":*",
+    "//third_party/androidx:*",
+  ]
+}
+
+# This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
 java_prebuilt("org_jetbrains_annotations_java") {
   jar_path = "libs/org_jetbrains_annotations/annotations-13.0.jar"
   output_name = "org_jetbrains_annotations"
@@ -736,20 +755,6 @@
   ]
 }
 
-# This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
-java_prebuilt("org_threeten_threeten_extra_java") {
-  jar_path = "libs/org_threeten_threeten_extra/threeten-extra-1.5.0.jar"
-  output_name = "org_threeten_threeten_extra"
-  enable_bytecode_checks = false
-
-  # To remove visibility constraint, add this dependency to
-  # //third_party/android_deps/build.gradle.
-  visibility = [
-    ":*",
-    "//third_party/androidx:*",
-  ]
-}
-
 if (!limit_android_deps) {
   # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
   java_prebuilt("android_arch_lifecycle_common_java") {
@@ -1368,6 +1373,18 @@
   }
 
   # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
+  java_prebuilt("com_googlecode_java_diff_utils_diffutils_java") {
+    jar_path =
+        "libs/com_googlecode_java_diff_utils_diffutils/diffutils-1.3.0.jar"
+    output_name = "com_googlecode_java_diff_utils_diffutils"
+    supports_android = true
+    testonly = true
+
+    # Needed to break dependency cycle for errorprone_plugin_java.
+    enable_bytecode_checks = false
+  }
+
+  # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
   java_prebuilt("javax_annotation_javax_annotation_api_java") {
     jar_path = "libs/javax_annotation_javax_annotation_api/javax.annotation-api-1.3.2.jar"
     output_name = "javax_annotation_javax_annotation_api"
diff --git a/third_party/android_deps/additional_readme_paths.json b/third_party/android_deps/additional_readme_paths.json
index 1c91486..2eb797e 100644
--- a/third_party/android_deps/additional_readme_paths.json
+++ b/third_party/android_deps/additional_readme_paths.json
@@ -109,6 +109,7 @@
     "libs/com_googlecode_java_diff_utils_diffutils",
     "libs/com_squareup_javapoet",
     "libs/com_squareup_javawriter",
+    "libs/io_github_java_diff_utils_java_diff_utils",
     "libs/javax_annotation_javax_annotation_api",
     "libs/javax_annotation_jsr250_api",
     "libs/javax_inject_javax_inject",
@@ -140,6 +141,7 @@
     "libs/org_codehaus_plexus_plexus_container_default",
     "libs/org_codehaus_plexus_plexus_interpolation",
     "libs/org_codehaus_plexus_plexus_utils",
+    "libs/org_eclipse_jgit_org_eclipse_jgit",
     "libs/org_jetbrains_annotations",
     "libs/org_jetbrains_kotlin_kotlin_stdlib",
     "libs/org_jetbrains_kotlin_kotlin_stdlib_common",
@@ -163,6 +165,5 @@
     "libs/org_robolectric_shadows_framework",
     "libs/org_robolectric_shadows_playservices",
     "libs/org_robolectric_utils",
-    "libs/org_robolectric_utils_reflector",
-    "libs/org_threeten_threeten_extra"
+    "libs/org_robolectric_utils_reflector"
 ]
diff --git a/third_party/android_deps/buildSrc/src/main/groovy/BuildConfigGenerator.groovy b/third_party/android_deps/buildSrc/src/main/groovy/BuildConfigGenerator.groovy
index 90514f0..b0f3277 100644
--- a/third_party/android_deps/buildSrc/src/main/groovy/BuildConfigGenerator.groovy
+++ b/third_party/android_deps/buildSrc/src/main/groovy/BuildConfigGenerator.groovy
@@ -842,7 +842,7 @@
                 sb.append('  # This target does not come with most of its dependencies and is\n')
                 sb.append('  # only meant to be used by the resources shrinker. If you wish to use\n')
                 sb.append('  # this for other purposes, change buildCompileNoDeps in build.gradle.\n')
-                sb.append('  visibility = [ "//build/android/gyp/resources_shrinker:*" ]\n')
+                sb.append('  visibility = [ "//build/android/unused_resources:*" ]\n')
                 break
             case 'org_jetbrains_kotlinx_kotlinx_coroutines_android':
                 sb.append('requires_android = true')
diff --git a/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/README.chromium b/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/README.chromium
index e781c67..f99fd33 100644
--- a/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/README.chromium
+++ b/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/README.chromium
@@ -1,13 +1,13 @@
 Name: Caffeine cache
 Short Name: caffeine
 URL: https://github.com/ben-manes/caffeine
-Version: 2.8.0
+Version: 2.8.8
 License: Apache License, Version 2.0
 License File: NOT_SHIPPED
 Security Critical: no
 
 Description:
-A high performance caching library for Java 8+
+A high performance caching library
 
 Local Modifications:
 No modifications.
diff --git a/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/cipd.yaml b/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/cipd.yaml
index d71548e..9a80447 100644
--- a/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/cipd.yaml
+++ b/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@2.8.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@2.8.8.cr0
 package: chromium/third_party/android_deps/libs/com_github_ben_manes_caffeine_caffeine
 description: "Caffeine cache"
 data:
-- file: caffeine-2.8.0.jar
+- file: caffeine-2.8.8.jar
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/README.chromium b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/README.chromium
index 2d7050f..bfa6747 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/README.chromium
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/README.chromium
@@ -1,7 +1,7 @@
 Name: @BugPattern annotation
 Short Name: error_prone_annotation
 URL: https://errorprone.info/
-Version: 2.4.0
+Version: 2.7.1
 License: Apache 2.0
 License File: NOT_SHIPPED
 Security Critical: no
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/cipd.yaml b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/cipd.yaml
index ad15b81..3617b6e 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/cipd.yaml
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@2.4.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@2.7.1.cr0
 package: chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_annotation
 description: "@BugPattern annotation"
 data:
-- file: error_prone_annotation-2.4.0.jar
+- file: error_prone_annotation-2.7.1.jar
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/README.chromium b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/README.chromium
index 861ac7b2..ee5bfa0 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/README.chromium
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/README.chromium
@@ -1,7 +1,7 @@
 Name: error-prone annotations
 Short Name: error_prone_annotations
 URL: https://errorprone.info/
-Version: 2.4.0
+Version: 2.7.1
 License: Apache 2.0
 License File: LICENSE
 Security Critical: yes
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/cipd.yaml b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/cipd.yaml
index e1b88eee..5875c27e5 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/cipd.yaml
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@2.4.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@2.7.1.cr0
 package: chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_annotations
 description: "error-prone annotations"
 data:
-- file: error_prone_annotations-2.4.0.jar
+- file: error_prone_annotations-2.7.1.jar
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/README.chromium b/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/README.chromium
index 46838603..e58a36a 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/README.chromium
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/README.chromium
@@ -1,7 +1,7 @@
 Name: error-prone check api
 Short Name: error_prone_check_api
 URL: 
-Version: 2.4.0
+Version: 2.7.1
 License: Apache 2.0
 License File: NOT_SHIPPED
 Security Critical: no
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/cipd.yaml b/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/cipd.yaml
index 47f30574..fa808cc 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/cipd.yaml
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@2.4.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@2.7.1.cr0
 package: chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_check_api
 description: "error-prone check api"
 data:
-- file: error_prone_check_api-2.4.0.jar
+- file: error_prone_check_api-2.7.1.jar
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_core/README.chromium b/third_party/android_deps/libs/com_google_errorprone_error_prone_core/README.chromium
index 292feb9..9a017ea 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_core/README.chromium
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_core/README.chromium
@@ -1,7 +1,7 @@
 Name: error-prone library
 Short Name: error_prone_core
 URL: 
-Version: 2.4.0
+Version: 2.7.1
 License: Apache 2.0
 License File: NOT_SHIPPED
 Security Critical: no
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_core/cipd.yaml b/third_party/android_deps/libs/com_google_errorprone_error_prone_core/cipd.yaml
index ae3cda76..9c3e039 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_core/cipd.yaml
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_core/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@2.4.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@2.7.1.cr0
 package: chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_core
 description: "error-prone library"
 data:
-- file: error_prone_core-2.4.0.jar
+- file: error_prone_core-2.7.1.jar
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/README.chromium b/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/README.chromium
index 5b93c1a..7cb0d1da 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/README.chromium
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/README.chromium
@@ -1,7 +1,7 @@
 Name: error-prone type annotations
 Short Name: error_prone_type_annotations
 URL: 
-Version: 2.4.0
+Version: 2.7.1
 License: Apache 2.0
 License File: NOT_SHIPPED
 Security Critical: no
diff --git a/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/cipd.yaml b/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/cipd.yaml
index e375515..50b808d 100644
--- a/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/cipd.yaml
+++ b/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@2.4.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@2.7.1.cr0
 package: chromium/third_party/android_deps/libs/com_google_errorprone_error_prone_type_annotations
 description: "error-prone type annotations"
 data:
-- file: error_prone_type_annotations-2.4.0.jar
+- file: error_prone_type_annotations-2.7.1.jar
diff --git a/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/LICENSE b/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
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+
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+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
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+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/README.chromium b/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/README.chromium
new file mode 100644
index 0000000..666728d2
--- /dev/null
+++ b/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/README.chromium
@@ -0,0 +1,13 @@
+Name: java-diff-utils
+Short Name: java-diff-utils
+URL: https://github.com/java-diff-utils/java-diff-utils
+Version: 4.0
+License: Apache Version 2.0
+License File: NOT_SHIPPED
+Security Critical: no
+
+Description:
+The DiffUtils library for computing diffs, applying patches, generationg side-by-side view in Java.
+
+Local Modifications:
+No modifications.
diff --git a/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/cipd.yaml b/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/cipd.yaml
new file mode 100644
index 0000000..e956c5c
--- /dev/null
+++ b/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils/cipd.yaml
@@ -0,0 +1,10 @@
+# Copyright 2018 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# To create CIPD package run the following command.
+# cipd create --pkg-def cipd.yaml -tag version:2@4.0.cr0
+package: chromium/third_party/android_deps/libs/io_github_java_diff_utils_java_diff_utils
+description: "java-diff-utils"
+data:
+- file: java-diff-utils-4.0.jar
diff --git a/third_party/android_deps/libs/org_checkerframework_checker_qual/README.chromium b/third_party/android_deps/libs/org_checkerframework_checker_qual/README.chromium
index 6a38eb4f..e56e3d7 100644
--- a/third_party/android_deps/libs/org_checkerframework_checker_qual/README.chromium
+++ b/third_party/android_deps/libs/org_checkerframework_checker_qual/README.chromium
@@ -1,7 +1,7 @@
 Name: Checker Qual
 Short Name: checker-qual
 URL: https://checkerframework.org
-Version: 3.5.0
+Version: 3.8.0
 License: GPL v2 with the classpath exception
 License File: NOT_SHIPPED
 Security Critical: no
diff --git a/third_party/android_deps/libs/org_checkerframework_checker_qual/cipd.yaml b/third_party/android_deps/libs/org_checkerframework_checker_qual/cipd.yaml
index 46120454..c2ba86d 100644
--- a/third_party/android_deps/libs/org_checkerframework_checker_qual/cipd.yaml
+++ b/third_party/android_deps/libs/org_checkerframework_checker_qual/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@3.5.0.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@3.8.0.cr0
 package: chromium/third_party/android_deps/libs/org_checkerframework_checker_qual
 description: "Checker Qual"
 data:
-- file: checker-qual-3.5.0.jar
+- file: checker-qual-3.8.0.jar
diff --git a/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/README.chromium b/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/README.chromium
index 151b8a3..7fe5cdf 100644
--- a/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/README.chromium
+++ b/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/README.chromium
@@ -1,13 +1,13 @@
 Name: Dataflow (shaded)
 Short Name: dataflow-shaded
 URL: https://checkerframework.org
-Version: 3.1.2
+Version: 3.11.0
 License: GPL v2 with the classpath exception
 License File: NOT_SHIPPED
 Security Critical: no
 
 Description:
-Dataflow is a dataflow framework based on the javac compiler. The packages in this artifact have been renamed to org.checkerframework.shaded.*.
+dataflow-shaded is a dataflow framework based on the javac compiler. It differs from the org.checkerframework:dataflow artifact in two ways. First, the packages in this artifact have been renamed to org.checkerframework.shaded.*. Second, unlike the dataflow artifact, this artifact contains the dependencies it requires.null
 
 Local Modifications:
 No modifications.
diff --git a/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/cipd.yaml b/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/cipd.yaml
index 958c4a58..4bb78ea 100644
--- a/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/cipd.yaml
+++ b/third_party/android_deps/libs/org_checkerframework_dataflow_shaded/cipd.yaml
@@ -3,8 +3,8 @@
 # found in the LICENSE file.
 
 # To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@3.1.2.cr0
+# cipd create --pkg-def cipd.yaml -tag version:2@3.11.0.cr0
 package: chromium/third_party/android_deps/libs/org_checkerframework_dataflow_shaded
 description: "Dataflow (shaded)"
 data:
-- file: dataflow-shaded-3.1.2.jar
+- file: dataflow-shaded-3.11.0.jar
diff --git a/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/LICENSE b/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/LICENSE
new file mode 100644
index 0000000..1b85c646
--- /dev/null
+++ b/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/LICENSE
@@ -0,0 +1,37 @@
+This program and the accompanying materials are made available
+under the terms of the Eclipse Distribution License v1.0 which
+accompanies this distribution, is reproduced below, and is
+available at http://www.eclipse.org/org/documents/edl-v10.php
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or
+without modification, are permitted provided that the following
+conditions are met:
+
+- Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the following
+  disclaimer in the documentation and/or other materials provided
+  with the distribution.
+
+- Neither the name of the Eclipse Foundation, Inc. nor the
+  names of its contributors may be used to endorse or promote
+  products derived from this software without specific prior
+  written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/README.chromium b/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/README.chromium
new file mode 100644
index 0000000..2d2b61e
--- /dev/null
+++ b/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/README.chromium
@@ -0,0 +1,13 @@
+Name: JGit - Core
+Short Name: org.eclipse.jgit
+URL: https://www.eclipse.org/jgit/
+Version: 4.4.1.201607150455-r
+License: BSD 3-Clause
+License File: NOT_SHIPPED
+Security Critical: no
+
+Description:
+Repository access and algorithms
+
+Local Modifications:
+No modifications.
diff --git a/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/cipd.yaml b/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/cipd.yaml
new file mode 100644
index 0000000..37da30f4
--- /dev/null
+++ b/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit/cipd.yaml
@@ -0,0 +1,10 @@
+# Copyright 2018 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# To create CIPD package run the following command.
+# cipd create --pkg-def cipd.yaml -tag version:2@4.4.1.201607150455-r.cr0
+package: chromium/third_party/android_deps/libs/org_eclipse_jgit_org_eclipse_jgit
+description: "JGit - Core"
+data:
+- file: org.eclipse.jgit-4.4.1.201607150455-r.jar
diff --git a/third_party/android_deps/libs/org_threeten_threeten_extra/LICENSE b/third_party/android_deps/libs/org_threeten_threeten_extra/LICENSE
deleted file mode 100644
index f8f6e59..0000000
--- a/third_party/android_deps/libs/org_threeten_threeten_extra/LICENSE
+++ /dev/null
@@ -1,29 +0,0 @@
-Copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos.
-
-All rights reserved.
-
-* Redistribution and use in source and binary forms, with or without
-  modification, are permitted provided that the following conditions are met:
-
-* Redistributions of source code must retain the above copyright notice,
-  this list of conditions and the following disclaimer.
-
-* Redistributions in binary form must reproduce the above copyright notice,
-  this list of conditions and the following disclaimer in the documentation
-  and/or other materials provided with the distribution.
-
-* Neither the name of JSR-310 nor the names of its contributors
-  may be used to endorse or promote products derived from this software
-  without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/third_party/android_deps/libs/org_threeten_threeten_extra/README.chromium b/third_party/android_deps/libs/org_threeten_threeten_extra/README.chromium
deleted file mode 100644
index 3e06a90c..0000000
--- a/third_party/android_deps/libs/org_threeten_threeten_extra/README.chromium
+++ /dev/null
@@ -1,13 +0,0 @@
-Name: ThreeTen-Extra
-Short Name: threeten-extra
-URL: https://www.threeten.org/threeten-extra
-Version: 1.5.0
-License: BSD 3-clause
-License File: NOT_SHIPPED
-Security Critical: no
-
-Description:
-Additional functionality that enhances JSR-310 dates and times in Java SE 8 and later
-
-Local Modifications:
-No modifications.
diff --git a/third_party/android_deps/libs/org_threeten_threeten_extra/cipd.yaml b/third_party/android_deps/libs/org_threeten_threeten_extra/cipd.yaml
deleted file mode 100644
index 1e7d351..0000000
--- a/third_party/android_deps/libs/org_threeten_threeten_extra/cipd.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-# Copyright 2018 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:2@1.5.0.cr0
-package: chromium/third_party/android_deps/libs/org_threeten_threeten_extra
-description: "ThreeTen-Extra"
-data:
-- file: threeten-extra-1.5.0.jar
diff --git a/third_party/blink/PRESUBMIT_test.py b/third_party/blink/PRESUBMIT_test.py
index c6af60f6..9313c83 100755
--- a/third_party/blink/PRESUBMIT_test.py
+++ b/third_party/blink/PRESUBMIT_test.py
@@ -145,6 +145,8 @@
 
 class CxxDependencyTest(unittest.TestCase):
     allow_list = [
+        'base::OnceCallback<void()>',
+        'base::RepeatingCallback<void()>',
         'gfx::ColorSpace',
         'gfx::CubicBezier',
         'gfx::ICCProfile',
@@ -155,8 +157,6 @@
     ]
     disallow_list = [
         'GURL',
-        'base::OnceCallback<void()>',
-        'base::RepeatingCallback<void()>',
         'content::RenderFrame',
         'gfx::Canvas',
         'net::IPEndPoint',
diff --git a/third_party/blink/public/devtools_protocol/browser_protocol.pdl b/third_party/blink/public/devtools_protocol/browser_protocol.pdl
index e033cea..aa8cf476 100644
--- a/third_party/blink/public/devtools_protocol/browser_protocol.pdl
+++ b/third_party/blink/public/devtools_protocol/browser_protocol.pdl
@@ -6487,6 +6487,18 @@
       # This frame is the root of an ad frame.
       root
 
+  experimental type AdFrameExplanation extends string
+    enum
+      ParentIsAd
+      CreatedByAdScript
+      MatchedBlockingRule
+
+  # Indicates whether a frame has been identified as an ad and why.
+  experimental type AdFrameStatus extends object
+    properties
+      AdFrameType adFrameType
+      optional array of AdFrameExplanation explanations
+
   # Indicates whether the frame is a secure context and why it is the case.
   experimental type SecureContextType extends string
     enum
@@ -6675,8 +6687,8 @@
       string mimeType
       # If the frame failed to load, this contains the URL that could not be loaded. Note that unlike url above, this URL may contain a fragment.
       experimental optional string unreachableUrl
-      # Indicates whether this frame was tagged as an ad.
-      experimental optional AdFrameType adFrameType
+      # Indicates whether this frame was tagged as an ad and why.
+      experimental optional AdFrameStatus adFrameStatus
       # Indicates whether the main document is a secure context and explains why that is the case.
       experimental SecureContextType secureContextType
       # Indicates whether this is a cross origin isolated context.
diff --git a/third_party/blink/public/mojom/payments/payment_request.mojom b/third_party/blink/public/mojom/payments/payment_request.mojom
index 0935f62..447d073 100644
--- a/third_party/blink/public/mojom/payments/payment_request.mojom
+++ b/third_party/blink/public/mojom/payments/payment_request.mojom
@@ -146,7 +146,7 @@
   // An indefinite-length blob passed from the relying party server, to be sent
   // to an authenticator for signing together with the price and merchant
   // origin.
-  array<uint8> network_data;
+  array<uint8> challenge;
 
   // Time to wait for an authenticator to complete an operation provided by the
   // relying party.
diff --git a/third_party/blink/public/mojom/picture_in_picture/picture_in_picture.mojom b/third_party/blink/public/mojom/picture_in_picture/picture_in_picture.mojom
index f4aae01..b4f017d4 100644
--- a/third_party/blink/public/mojom/picture_in_picture/picture_in_picture.mojom
+++ b/third_party/blink/public/mojom/picture_in_picture/picture_in_picture.mojom
@@ -28,7 +28,7 @@
   // This call cannot happen after `Stop()`.
   Update(uint32 player_id,
       pending_associated_remote<media.mojom.MediaPlayer> player_remote,
-      viz.mojom.SurfaceId? surface_id,
+      viz.mojom.SurfaceId surface_id,
       gfx.mojom.Size natural_size,
       bool show_play_pause_button);
 
@@ -40,9 +40,14 @@
 // PictureInPictureService is a Document-associated interface that lives in
 // the browser process. It is responsible for implementing the browser-side
 // support for https://wicg.github.io/picture-in-picture and manages all
-// picture-in-picture interactions for Document. Picture-in-picture allows
+// picture-in-picture interactions for Document. Picture-in-Picture allows
 // a Document to display a video in an always-on-top floating window with
 // basic playback functionality (e.g. play and pause).
+// The window provides playback control by translating user actions into
+// media.mojom.MediaPlayer messages. The MediaPlayer remote can be reset by the
+// renderer even while the Picute-in-Picture session is active, indicating that
+// the media player is gone. A new MediaPlayer remote can be provided later by
+// an Update() message to the PictureInPictureSession object.
 interface PictureInPictureService {
   // Notify the service that it should start a Picture-in-Picture session. If a
   // Picture-in-Picture session is already running, it will be closed.
@@ -61,7 +66,7 @@
   StartSession(
       uint32 player_id,
       pending_associated_remote<media.mojom.MediaPlayer> player_remote,
-      viz.mojom.SurfaceId? surface_id,
+      viz.mojom.SurfaceId surface_id,
       gfx.mojom.Size natural_size,
       bool show_play_pause_button,
       pending_remote<PictureInPictureSessionObserver> observer)
diff --git a/third_party/blink/public/mojom/web_feature/web_feature.mojom b/third_party/blink/public/mojom/web_feature/web_feature.mojom
index 0b28873..19c6d12 100644
--- a/third_party/blink/public/mojom/web_feature/web_feature.mojom
+++ b/third_party/blink/public/mojom/web_feature/web_feature.mojom
@@ -3248,6 +3248,8 @@
   kV8AbortSignal_Abort_Method = 3933,
   kSelectionBackgroundColorInversion = 3934,
   kRTCPeerConnectionPlanBThrewAnException = 3935,
+  kHTMLRootContained = 3936,
+  kHTMLBodyContained = 3937,
 
   // Add new features immediately above this line. Don't change assigned
   // numbers of any item, and don't reuse removed slots.
diff --git a/third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_serializer_test.cc b/third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_serializer_test.cc
index 1f16a0e..3e85f60 100644
--- a/third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_serializer_test.cc
+++ b/third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_serializer_test.cc
@@ -1953,11 +1953,12 @@
   // The final 5 bytes is the offset of the two message ports inside the
   // transferred message port array. In order to trigger integer overflow this
   // is set to 0xffffffff, encoded as a varint.
-  char serialized_value[] = {0xff, 0x14, 0xff, 0x0d, 0x5c, 0x6d,
-                             0xff, 0xff, 0xff, 0xff, 0x0f};
+  uint8_t serialized_value[] = {0xff, 0x14, 0xff, 0x0d, 0x5c, 0x6d,
+                                0xff, 0xff, 0xff, 0xff, 0x0f};
 
-  auto corrupted_serialized_script_value =
-      SerializedScriptValue::Create(serialized_value, sizeof(serialized_value));
+  auto corrupted_serialized_script_value = SerializedScriptValue::Create(
+      reinterpret_cast<const char*>(serialized_value),
+      sizeof(serialized_value));
   corrupted_serialized_script_value->GetStreams() =
       std::move(serialized_script_value->GetStreams());
 
diff --git a/third_party/blink/renderer/core/animation/animation.h b/third_party/blink/renderer/core/animation/animation.h
index 3c26e22b..851763c 100644
--- a/third_party/blink/renderer/core/animation/animation.h
+++ b/third_party/blink/renderer/core/animation/animation.h
@@ -33,7 +33,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "base/time/time.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
@@ -481,12 +480,14 @@
           playback_rate(animation.EffectivePlaybackRate()),
           effect_changed(false),
           pending_action(animation.start_time_ ? kNone : kStart) {}
+    CompositorState(const CompositorState&) = delete;
+    CompositorState& operator=(const CompositorState&) = delete;
+
     absl::optional<double> start_time;
     absl::optional<double> hold_time;
     double playback_rate;
     bool effect_changed;
     CompositorAction pending_action;
-    DISALLOW_COPY_AND_ASSIGN(CompositorState);
   };
 
   enum CompositorPendingChange {
diff --git a/third_party/blink/renderer/core/animation/animation_clock.h b/third_party/blink/renderer/core/animation/animation_clock.h
index 8f10d8b..abf6727 100644
--- a/third_party/blink/renderer/core/animation/animation_clock.h
+++ b/third_party/blink/renderer/core/animation/animation_clock.h
@@ -33,7 +33,6 @@
 
 #include <limits>
 
-#include "base/macros.h"
 #include "base/time/default_tick_clock.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
@@ -53,6 +52,8 @@
         clock_(base::DefaultTickClock::GetInstance()),
         task_for_which_time_was_calculated_(
             std::numeric_limits<unsigned>::max()) {}
+  AnimationClock(const AnimationClock&) = delete;
+  AnimationClock& operator=(const AnimationClock&) = delete;
 
   void UpdateTime(base::TimeTicks time);
   base::TimeTicks CurrentTime();
@@ -97,8 +98,6 @@
   // See |NotifyTaskStart| documentation for these members.
   unsigned task_for_which_time_was_calculated_;
   static unsigned currently_running_task_;
-
-  DISALLOW_COPY_AND_ASSIGN(AnimationClock);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/animation/animation_test.cc b/third_party/blink/renderer/core/animation/animation_test.cc
index be0ffc33..aad1501d 100644
--- a/third_party/blink/renderer/core/animation/animation_test.cc
+++ b/third_party/blink/renderer/core/animation/animation_test.cc
@@ -33,6 +33,7 @@
 #include <memory>
 
 #include "base/bits.h"
+#include "base/macros.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/blink/renderer/bindings/core/v8/v8_optional_effect_timing.h"
diff --git a/third_party/blink/renderer/core/animation/css/css_animation_update.h b/third_party/blink/renderer/core/animation/css/css_animation_update.h
index d214301..0cfaf314 100644
--- a/third_party/blink/renderer/core/animation/css/css_animation_update.h
+++ b/third_party/blink/renderer/core/animation/css/css_animation_update.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_CSS_ANIMATION_UPDATE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_CSS_ANIMATION_UPDATE_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/animation_timeline.h"
 #include "third_party/blink/renderer/core/animation/effect_stack.h"
 #include "third_party/blink/renderer/core/animation/inert_effect.h"
@@ -114,6 +113,8 @@
 
  public:
   CSSAnimationUpdate();
+  CSSAnimationUpdate(const CSSAnimationUpdate&) = delete;
+  CSSAnimationUpdate& operator=(const CSSAnimationUpdate&) = delete;
   ~CSSAnimationUpdate();
 
   void Copy(const CSSAnimationUpdate&);
@@ -298,7 +299,6 @@
   ActiveInterpolationsMap active_interpolations_for_standard_transitions_;
 
   friend class PendingAnimationUpdate;
-  DISALLOW_COPY_AND_ASSIGN(CSSAnimationUpdate);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/animation/css/css_animations.h b/third_party/blink/renderer/core/animation/css/css_animations.h
index cf367221..4b7469c1 100644
--- a/third_party/blink/renderer/core/animation/css/css_animations.h
+++ b/third_party/blink/renderer/core/animation/css/css_animations.h
@@ -31,7 +31,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_CSS_ANIMATIONS_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_CSS_ANIMATIONS_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/css/css_animation_data.h"
 #include "third_party/blink/renderer/core/animation/css/css_animation_update.h"
 #include "third_party/blink/renderer/core/animation/css/css_transition_data.h"
@@ -57,6 +56,8 @@
 
  public:
   CSSAnimations();
+  CSSAnimations(const CSSAnimations&) = delete;
+  CSSAnimations& operator=(const CSSAnimations&) = delete;
 
   static const StylePropertyShorthand& PropertiesForTransitionAll();
   static bool IsAnimationAffectingProperty(const CSSProperty&);
@@ -289,8 +290,6 @@
     PropertyHandle property_;
     Timing::Phase previous_phase_;
   };
-
-  DISALLOW_COPY_AND_ASSIGN(CSSAnimations);
 };
 
 template <>
diff --git a/third_party/blink/renderer/core/animation/effect_stack.h b/third_party/blink/renderer/core/animation/effect_stack.h
index f97e061..3c58e3be 100644
--- a/third_party/blink/renderer/core/animation/effect_stack.h
+++ b/third_party/blink/renderer/core/animation/effect_stack.h
@@ -31,7 +31,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_EFFECT_STACK_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_EFFECT_STACK_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/animation.h"
 #include "third_party/blink/renderer/core/animation/effect_model.h"
 #include "third_party/blink/renderer/core/animation/keyframe_effect.h"
@@ -54,6 +53,8 @@
 
  public:
   EffectStack();
+  EffectStack(const EffectStack&) = delete;
+  EffectStack& operator=(const EffectStack&) = delete;
 
   void Add(SampledEffect* sampled_effect) {
     sampled_effects_.push_back(sampled_effect);
@@ -97,7 +98,6 @@
   HeapVector<Member<SampledEffect>> sampled_effects_;
 
   friend class AnimationEffectStackTest;
-  DISALLOW_COPY_AND_ASSIGN(EffectStack);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/animation/element_animations.h b/third_party/blink/renderer/core/animation/element_animations.h
index babb8cb..debe9bc 100644
--- a/third_party/blink/renderer/core/animation/element_animations.h
+++ b/third_party/blink/renderer/core/animation/element_animations.h
@@ -31,7 +31,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_ELEMENT_ANIMATIONS_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_ELEMENT_ANIMATIONS_H_
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "third_party/blink/renderer/core/animation/css/css_animations.h"
 #include "third_party/blink/renderer/core/animation/effect_stack.h"
@@ -51,6 +50,8 @@
     : public GarbageCollected<ElementAnimations> {
  public:
   ElementAnimations();
+  ElementAnimations(const ElementAnimations&) = delete;
+  ElementAnimations& operator=(const ElementAnimations&) = delete;
   ~ElementAnimations();
 
   // Animations that are currently active for this element, their effects will
@@ -122,8 +123,6 @@
   // See https://crbug.com/1062217.
   std::unique_ptr<CSSBitset> base_important_set_;
 
-  DISALLOW_COPY_AND_ASSIGN(ElementAnimations);
-
   FRIEND_TEST_ALL_PREFIXES(StyleEngineTest, PseudoElementBaseComputedStyle);
 };
 
diff --git a/third_party/blink/renderer/core/animation/interpolated_svg_path_source.h b/third_party/blink/renderer/core/animation/interpolated_svg_path_source.h
index e7cdaf71..0eb69b3 100644
--- a/third_party/blink/renderer/core/animation/interpolated_svg_path_source.h
+++ b/third_party/blink/renderer/core/animation/interpolated_svg_path_source.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATED_SVG_PATH_SOURCE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATED_SVG_PATH_SOURCE_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/svg_path_seg_interpolation_functions.h"
 #include "third_party/blink/renderer/core/svg/svg_path_data.h"
 #include "third_party/blink/renderer/platform/wtf/vector.h"
@@ -24,6 +23,10 @@
     DCHECK_EQ(interpolable_path_segs_.length(), path_seg_types_.size());
   }
 
+  InterpolatedSVGPathSource(const InterpolatedSVGPathSource&) = delete;
+  InterpolatedSVGPathSource& operator=(const InterpolatedSVGPathSource&) =
+      delete;
+
   bool HasMoreData() const;
   PathSegmentData ParseSegment();
 
@@ -32,7 +35,6 @@
   wtf_size_t current_index_;
   const InterpolableList& interpolable_path_segs_;
   const Vector<SVGPathSegType>& path_seg_types_;
-  DISALLOW_COPY_AND_ASSIGN(InterpolatedSVGPathSource);
 };
 
 bool InterpolatedSVGPathSource::HasMoreData() const {
diff --git a/third_party/blink/renderer/core/animation/interpolation.h b/third_party/blink/renderer/core/animation/interpolation.h
index 228bab31..d57ab9d 100644
--- a/third_party/blink/renderer/core/animation/interpolation.h
+++ b/third_party/blink/renderer/core/animation/interpolation.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/interpolable_value.h"
 #include "third_party/blink/renderer/core/animation/property_handle.h"
 #include "third_party/blink/renderer/core/core_export.h"
@@ -57,6 +56,8 @@
 //    the subclass documentation for more.
 class CORE_EXPORT Interpolation : public GarbageCollected<Interpolation> {
  public:
+  Interpolation(const Interpolation&) = delete;
+  Interpolation& operator=(const Interpolation&) = delete;
   virtual ~Interpolation() {}
 
   virtual void Interpolate(int iteration, double fraction) = 0;
@@ -76,7 +77,6 @@
 
  protected:
   Interpolation() = default;
-  DISALLOW_COPY_AND_ASSIGN(Interpolation);
 };
 
 using ActiveInterpolations = HeapVector<Member<Interpolation>, 1>;
diff --git a/third_party/blink/renderer/core/animation/interpolation_type.h b/third_party/blink/renderer/core/animation/interpolation_type.h
index 431d50dd..b2567c48 100644
--- a/third_party/blink/renderer/core/animation/interpolation_type.h
+++ b/third_party/blink/renderer/core/animation/interpolation_type.h
@@ -7,7 +7,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/interpolation_value.h"
 #include "third_party/blink/renderer/core/animation/keyframe.h"
 #include "third_party/blink/renderer/core/animation/pairwise_interpolation_value.h"
@@ -33,6 +32,8 @@
   USING_FAST_MALLOC(InterpolationType);
 
  public:
+  InterpolationType(const InterpolationType&) = delete;
+  InterpolationType& operator=(const InterpolationType&) = delete;
   virtual ~InterpolationType() = default;
 
   PropertyHandle GetProperty() const { return property_; }
@@ -45,6 +46,8 @@
     USING_FAST_MALLOC(ConversionChecker);
 
    public:
+    ConversionChecker(const ConversionChecker&) = delete;
+    ConversionChecker& operator=(const ConversionChecker&) = delete;
     virtual ~ConversionChecker() = default;
     void SetType(const InterpolationType& type) { type_ = &type; }
     const InterpolationType& GetType() const { return *type_; }
@@ -54,7 +57,6 @@
    protected:
     ConversionChecker() : type_(nullptr) {}
     const InterpolationType* type_;
-    DISALLOW_COPY_AND_ASSIGN(ConversionChecker);
   };
   using ConversionCheckers = Vector<std::unique_ptr<ConversionChecker>>;
 
@@ -121,7 +123,6 @@
   explicit InterpolationType(PropertyHandle property) : property_(property) {}
 
   const PropertyHandle property_;
-  DISALLOW_COPY_AND_ASSIGN(InterpolationType);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/animation/keyframe.h b/third_party/blink/renderer/core/animation/keyframe.h
index a70ac6c..b406414 100644
--- a/third_party/blink/renderer/core/animation/keyframe.h
+++ b/third_party/blink/renderer/core/animation/keyframe.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_KEYFRAME_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_KEYFRAME_H_
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 #include "third_party/blink/renderer/core/animation/animation_effect.h"
@@ -62,6 +61,8 @@
 // FIXME: Make Keyframe immutable
 class CORE_EXPORT Keyframe : public GarbageCollected<Keyframe> {
  public:
+  Keyframe(const Keyframe&) = delete;
+  Keyframe& operator=(const Keyframe&) = delete;
   virtual ~Keyframe() = default;
 
   // TODO(smcgruer): The keyframe offset should be immutable.
@@ -124,6 +125,9 @@
     PropertySpecificKeyframe(double offset,
                              scoped_refptr<TimingFunction> easing,
                              EffectModel::CompositeOperation);
+    PropertySpecificKeyframe(const PropertySpecificKeyframe&) = delete;
+    PropertySpecificKeyframe& operator=(const PropertySpecificKeyframe&) =
+        delete;
     virtual ~PropertySpecificKeyframe() = default;
     double Offset() const { return offset_; }
     TimingFunction& Easing() const { return *easing_; }
@@ -165,8 +169,6 @@
     double offset_;
     scoped_refptr<TimingFunction> easing_;
     EffectModel::CompositeOperation composite_;
-
-    DISALLOW_COPY_AND_ASSIGN(PropertySpecificKeyframe);
   };
 
   // Construct and return a property-specific keyframe for this keyframe.
@@ -202,7 +204,6 @@
   // absl::nullopt value represents 'auto'.
   absl::optional<EffectModel::CompositeOperation> composite_;
   scoped_refptr<TimingFunction> easing_;
-  DISALLOW_COPY_AND_ASSIGN(Keyframe);
 };
 
 using PropertySpecificKeyframe = Keyframe::PropertySpecificKeyframe;
diff --git a/third_party/blink/renderer/core/animation/primitive_interpolation.h b/third_party/blink/renderer/core/animation/primitive_interpolation.h
index e50e7cd..6bfe0ab 100644
--- a/third_party/blink/renderer/core/animation/primitive_interpolation.h
+++ b/third_party/blink/renderer/core/animation/primitive_interpolation.h
@@ -10,7 +10,6 @@
 #include <memory>
 #include <utility>
 
-#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/blink/renderer/core/animation/typed_interpolation_value.h"
 #include "third_party/blink/renderer/platform/animation/animation_utilities.h"
@@ -25,6 +24,8 @@
   USING_FAST_MALLOC(PrimitiveInterpolation);
 
  public:
+  PrimitiveInterpolation(const PrimitiveInterpolation&) = delete;
+  PrimitiveInterpolation& operator=(const PrimitiveInterpolation&) = delete;
   virtual ~PrimitiveInterpolation() = default;
 
   virtual void InterpolateValue(
@@ -37,7 +38,6 @@
 
  protected:
   PrimitiveInterpolation() = default;
-  DISALLOW_COPY_AND_ASSIGN(PrimitiveInterpolation);
 };
 
 // Represents a pair of keyframes that are compatible for "smooth" interpolation
diff --git a/third_party/blink/renderer/core/animation/sampled_effect.h b/third_party/blink/renderer/core/animation/sampled_effect.h
index 5f9a5df..ed21e02 100644
--- a/third_party/blink/renderer/core/animation/sampled_effect.h
+++ b/third_party/blink/renderer/core/animation/sampled_effect.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_SAMPLED_EFFECT_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_SAMPLED_EFFECT_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/animation.h"
 #include "third_party/blink/renderer/core/animation/interpolation.h"
 #include "third_party/blink/renderer/core/animation/keyframe_effect.h"
@@ -19,6 +18,8 @@
 class SampledEffect final : public GarbageCollected<SampledEffect> {
  public:
   SampledEffect(KeyframeEffect*, unsigned sequence_number);
+  SampledEffect(const SampledEffect&) = delete;
+  SampledEffect& operator=(const SampledEffect&) = delete;
 
   void Clear();
 
@@ -43,7 +44,6 @@
   HeapVector<Member<Interpolation>> interpolations_;
   const unsigned sequence_number_;
   KeyframeEffect::Priority priority_;
-  DISALLOW_COPY_AND_ASSIGN(SampledEffect);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/animation/underlying_value_owner.h b/third_party/blink/renderer/core/animation/underlying_value_owner.h
index 95efc5d..1f6d277 100644
--- a/third_party/blink/renderer/core/animation/underlying_value_owner.h
+++ b/third_party/blink/renderer/core/animation/underlying_value_owner.h
@@ -7,7 +7,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/animation/typed_interpolation_value.h"
 #include "third_party/blink/renderer/core/animation/underlying_value.h"
 #include "third_party/blink/renderer/core/core_export.h"
@@ -25,6 +24,8 @@
  public:
   UnderlyingValueOwner()
       : type_(nullptr), value_owner_(nullptr), value_(nullptr) {}
+  UnderlyingValueOwner(const UnderlyingValueOwner&) = delete;
+  UnderlyingValueOwner& operator=(const UnderlyingValueOwner&) = delete;
 
   operator bool() const {
     DCHECK_EQ(static_cast<bool>(type_), static_cast<bool>(value_));
@@ -56,7 +57,6 @@
   const InterpolationType* type_;
   InterpolationValue value_owner_;
   const InterpolationValue* value_;
-  DISALLOW_COPY_AND_ASSIGN(UnderlyingValueOwner);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/css/css_selector_watch_test.cc b/third_party/blink/renderer/core/css/css_selector_watch_test.cc
index 46e58f5f..fdeba84 100644
--- a/third_party/blink/renderer/core/css/css_selector_watch_test.cc
+++ b/third_party/blink/renderer/core/css/css_selector_watch_test.cc
@@ -83,4 +83,53 @@
   EXPECT_TRUE(RemovedSelectors(watch).Contains(".b"));
 }
 
+class CSSSelectorWatchCQTest : public CSSSelectorWatchTest,
+                               private ScopedCSSContainerQueriesForTest {
+ protected:
+  CSSSelectorWatchCQTest() : ScopedCSSContainerQueriesForTest(true) {}
+};
+
+TEST_F(CSSSelectorWatchCQTest, ContainerQueryDisplayNone) {
+  CSSSelectorWatch& watch = CSSSelectorWatch::From(GetDocument());
+
+  GetDocument().body()->setInnerHTML(R"HTML(
+    <style>
+      .c #container {
+        container-name: c1;
+        container-type: inline-size;
+      }
+      .c #inner { display: none; }
+      @container c1 (min-width: 200px) {
+        .c #inner { display: inline }
+      }
+    </style>
+    <div id="container">
+      <span id="inner"></span>
+    </div>
+  )HTML");
+
+  Vector<String> selectors;
+  selectors.push_back("#inner");
+  watch.WatchCSSSelectors(selectors);
+  UpdateAllLifecyclePhasesForTest();
+
+  EXPECT_EQ(1u, AddedSelectors(watch).size());
+  EXPECT_TRUE(AddedSelectors(watch).Contains("#inner"));
+  EXPECT_EQ(0u, RemovedSelectors(watch).size());
+
+  // Setting the class 'c' on body will make #inner display:none, but also make
+  // #container a container 'c1' which is flipping the span back to
+  // display:inline.
+  ClearAddedRemoved(watch);
+  GetDocument().body()->setAttribute(html_names::kClassAttr, "c");
+  UpdateAllLifecyclePhasesForTest();
+
+  // Element::UpdateCallbackSelectors() will both remove and add #inner in the
+  // two passes. First without the CQ matching, and then in an interleaved style
+  // and layout pass. The accounting in CSSSelectorWatch::UpdateSelectorMatches
+  // will make sure we up with a zero balance.
+  EXPECT_EQ(0u, AddedSelectors(watch).size());
+  EXPECT_EQ(0u, RemovedSelectors(watch).size());
+}
+
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/css/resolver/style_resolver.cc b/third_party/blink/renderer/core/css/resolver/style_resolver.cc
index d17baa3..f2afb0e 100644
--- a/third_party/blink/renderer/core/css/resolver/style_resolver.cc
+++ b/third_party/blink/renderer/core/css/resolver/style_resolver.cc
@@ -1723,9 +1723,14 @@
   LayoutObject* layout_object = body_or_html.GetLayoutObject();
   if (!layout_object)
     return true;
+  bool contained = layout_object->ShouldApplyAnyContainment();
+  if (contained) {
+    UseCounter::Count(GetDocument(), IsA<HTMLHtmlElement>(body_or_html)
+                                         ? WebFeature::kHTMLRootContained
+                                         : WebFeature::kHTMLBodyContained);
+  }
   if (!RuntimeEnabledFeatures::CSSContainedBodyPropagationEnabled())
     return false;
-  bool contained = layout_object->ShouldApplyAnyContainment();
   DCHECK_EQ(contained,
             layout_object->StyleRef().ShouldApplyAnyContainment(body_or_html))
       << "Applied containment must give the same result from LayoutObject and "
diff --git a/third_party/blink/renderer/core/css/resolver/style_resolver.h b/third_party/blink/renderer/core/css/resolver/style_resolver.h
index 27114c0..441fe62 100644
--- a/third_party/blink/renderer/core/css/resolver/style_resolver.h
+++ b/third_party/blink/renderer/core/css/resolver/style_resolver.h
@@ -161,10 +161,6 @@
                                       const CSSPropertyName&,
                                       const CSSValue&);
 
-  // Check if the BODY or HTML element's display or containment stops
-  // propagation of BODY style to HTML and viewport.
-  static bool ShouldStopBodyPropagation(const Element& body_or_html);
-
   scoped_refptr<ComputedStyle> StyleForInterpolations(
       Element& element,
       ActiveInterpolationsMap& animations);
@@ -179,6 +175,10 @@
       const ComputedStyle& base_style,
       ActiveInterpolationsMap& transition_interpolations);
 
+  // Check if the BODY or HTML element's display or containment stops
+  // propagation of BODY style to HTML and viewport.
+  bool ShouldStopBodyPropagation(const Element& body_or_html);
+
   void Trace(Visitor*) const;
 
  private:
diff --git a/third_party/blink/renderer/core/display_lock/display_lock_utilities.h b/third_party/blink/renderer/core/display_lock/display_lock_utilities.h
index 45aeb57..8b224ad 100644
--- a/third_party/blink/renderer/core/display_lock/display_lock_utilities.h
+++ b/third_party/blink/renderer/core/display_lock/display_lock_utilities.h
@@ -21,23 +21,21 @@
   // This class forces updates on display locks from the given node up the
   // ancestor chain until the local frame root.
   class CORE_EXPORT ScopedForcedUpdate {
-    DISALLOW_COPY_AND_ASSIGN(ScopedForcedUpdate);
     STACK_ALLOCATED();
 
    public:
     ScopedForcedUpdate(ScopedForcedUpdate&& other) : impl_(other.impl_) {
       other.impl_ = nullptr;
     }
-    ~ScopedForcedUpdate() {
-      if (impl_)
-        impl_->Destroy();
-    }
-
     ScopedForcedUpdate& operator=(ScopedForcedUpdate&& other) {
       impl_ = other.impl_;
       other.impl_ = nullptr;
       return *this;
     }
+    ~ScopedForcedUpdate() {
+      if (impl_)
+        impl_->Destroy();
+    }
 
    private:
     // It is important not to create multiple ScopedChainForcedUpdate scopes.
diff --git a/third_party/blink/renderer/core/document_transition/document_transition_origin_trial_test.cc b/third_party/blink/renderer/core/document_transition/document_transition_origin_trial_test.cc
index 970ac11..fc68b5c 100644
--- a/third_party/blink/renderer/core/document_transition/document_transition_origin_trial_test.cc
+++ b/third_party/blink/renderer/core/document_transition/document_transition_origin_trial_test.cc
@@ -26,7 +26,7 @@
 namespace blink {
 namespace {
 
-constexpr char kOriginTrialPublicKey[] = {
+constexpr uint8_t kOriginTrialPublicKey[] = {
     0x75, 0x10, 0xac, 0xf9, 0x3a, 0x1c, 0xb8, 0xa9, 0x28, 0x70, 0xd2,
     0x9a, 0xd0, 0x0b, 0x59, 0xe1, 0xac, 0x2b, 0xb7, 0xd5, 0xca, 0x1f,
     0x64, 0x90, 0x08, 0x8e, 0xa8, 0xe0, 0x56, 0x3a, 0x04, 0xd0,
@@ -63,7 +63,8 @@
   }
   bool IsOriginTrialsSupported() const override { return true; }
   std::vector<base::StringPiece> GetPublicKeys() const override {
-    return {{kOriginTrialPublicKey, base::size(kOriginTrialPublicKey)}};
+    return {{reinterpret_cast<const char*>(kOriginTrialPublicKey),
+             base::size(kOriginTrialPublicKey)}};
   }
   bool IsOriginSecure(const GURL& url) const override { return true; }
 };
diff --git a/third_party/blink/renderer/core/dom/element.cc b/third_party/blink/renderer/core/dom/element.cc
index 18c127bf..7bbea9e 100644
--- a/third_party/blink/renderer/core/dom/element.cc
+++ b/third_party/blink/renderer/core/dom/element.cc
@@ -3164,7 +3164,8 @@
             pseudo_element->LayoutStyleForDisplayContents(*layout_style);
       }
     } else if (auto* html_element = DynamicTo<HTMLHtmlElement>(this)) {
-      layout_style = html_element->LayoutStyleForElement(layout_style);
+      if (this == GetDocument().documentElement())
+        layout_style = html_element->LayoutStyleForElement(layout_style);
     }
     // kEqual means that the computed style didn't change, but there are
     // additional flags in ComputedStyle which may have changed. For instance,
diff --git a/third_party/blink/renderer/core/frame/use_counter_impl_test.cc b/third_party/blink/renderer/core/frame/use_counter_impl_test.cc
index 98bc0bc..4c3c040 100644
--- a/third_party/blink/renderer/core/frame/use_counter_impl_test.cc
+++ b/third_party/blink/renderer/core/frame/use_counter_impl_test.cc
@@ -301,6 +301,43 @@
   EXPECT_FALSE(document.IsUseCounted(feature));
 }
 
+TEST_F(UseCounterImplTest, HTMLRootContained) {
+  auto dummy_page_holder = std::make_unique<DummyPageHolder>(IntSize(800, 600));
+  Page::InsertOrdinaryPageForTesting(&dummy_page_holder->GetPage());
+  Document& document = dummy_page_holder->GetDocument();
+  WebFeature feature = WebFeature::kHTMLRootContained;
+  EXPECT_FALSE(document.IsUseCounted(feature));
+
+  document.documentElement()->SetInlineStyleProperty(CSSPropertyID::kDisplay,
+                                                     "none");
+  document.documentElement()->SetInlineStyleProperty(CSSPropertyID::kContain,
+                                                     "paint");
+  UpdateAllLifecyclePhases(document);
+  EXPECT_FALSE(document.IsUseCounted(feature));
+
+  document.documentElement()->SetInlineStyleProperty(CSSPropertyID::kDisplay,
+                                                     "block");
+  UpdateAllLifecyclePhases(document);
+  EXPECT_TRUE(document.IsUseCounted(feature));
+}
+
+TEST_F(UseCounterImplTest, HTMLBodyContained) {
+  auto dummy_page_holder = std::make_unique<DummyPageHolder>(IntSize(800, 600));
+  Page::InsertOrdinaryPageForTesting(&dummy_page_holder->GetPage());
+  Document& document = dummy_page_holder->GetDocument();
+  WebFeature feature = WebFeature::kHTMLBodyContained;
+  EXPECT_FALSE(document.IsUseCounted(feature));
+
+  document.body()->SetInlineStyleProperty(CSSPropertyID::kDisplay, "none");
+  document.body()->SetInlineStyleProperty(CSSPropertyID::kContain, "paint");
+  UpdateAllLifecyclePhases(document);
+  EXPECT_FALSE(document.IsUseCounted(feature));
+
+  document.body()->SetInlineStyleProperty(CSSPropertyID::kDisplay, "block");
+  UpdateAllLifecyclePhases(document);
+  EXPECT_TRUE(document.IsUseCounted(feature));
+}
+
 class DeprecationTest : public testing::Test {
  public:
   DeprecationTest()
diff --git a/third_party/blink/renderer/core/html/html_html_element.cc b/third_party/blink/renderer/core/html/html_html_element.cc
index 7df5fad6..42e8cbe1 100644
--- a/third_party/blink/renderer/core/html/html_html_element.cc
+++ b/third_party/blink/renderer/core/html/html_html_element.cc
@@ -135,10 +135,11 @@
   DCHECK(style);
   DCHECK(GetDocument().InStyleRecalc());
   DCHECK(GetLayoutObject());
-  if (StyleResolver::ShouldStopBodyPropagation(*this))
+  StyleResolver& resolver = GetDocument().GetStyleResolver();
+  if (resolver.ShouldStopBodyPropagation(*this))
     return style;
   if (const Element* body_element = GetDocument().FirstBodyElement()) {
-    if (StyleResolver::ShouldStopBodyPropagation(*body_element))
+    if (resolver.ShouldStopBodyPropagation(*body_element))
       return style;
     if (const ComputedStyle* body_style = body_element->GetComputedStyle()) {
       if (NeedsLayoutStylePropagation(*style, *body_style))
diff --git a/third_party/blink/renderer/core/html/media/video_wake_lock_test.cc b/third_party/blink/renderer/core/html/media/video_wake_lock_test.cc
index 13a209f..4375cf1d 100644
--- a/third_party/blink/renderer/core/html/media/video_wake_lock_test.cc
+++ b/third_party/blink/renderer/core/html/media/video_wake_lock_test.cc
@@ -33,7 +33,7 @@
 // The VideoWakeLockPictureInPictureSession implements a PictureInPicture
 // session in the same process as the test and guarantees that the callbacks are
 // called in order for the events to be fired.
-class VideoWakeLockPictureInPictureSession
+class VideoWakeLockPictureInPictureSession final
     : public mojom::blink::PictureInPictureSession {
  public:
   explicit VideoWakeLockPictureInPictureSession(
@@ -41,14 +41,13 @@
       : receiver_(this, std::move(receiver)) {}
   ~VideoWakeLockPictureInPictureSession() override = default;
 
-  void Stop(StopCallback callback) final { std::move(callback).Run(); }
-
+  void Stop(StopCallback callback) override { std::move(callback).Run(); }
   void Update(uint32_t player_id,
               mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>
                   player_remote,
-              const absl::optional<viz::SurfaceId>&,
+              const viz::SurfaceId&,
               const gfx::Size&,
-              bool show_play_pause_button) final {}
+              bool show_play_pause_button) override {}
 
  private:
   mojo::Receiver<mojom::blink::PictureInPictureSession> receiver_;
@@ -57,7 +56,7 @@
 // The VideoWakeLockPictureInPictureService implements the PictureInPicture
 // service in the same process as the test and guarantees that the callbacks are
 // called in order for the events to be fired.
-class VideoWakeLockPictureInPictureService
+class VideoWakeLockPictureInPictureService final
     : public mojom::blink::PictureInPictureService {
  public:
   VideoWakeLockPictureInPictureService() : receiver_(this) {}
@@ -71,11 +70,11 @@
   void StartSession(
       uint32_t,
       mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>,
-      const absl::optional<viz::SurfaceId>&,
+      const viz::SurfaceId&,
       const gfx::Size&,
       bool,
       mojo::PendingRemote<mojom::blink::PictureInPictureSessionObserver>,
-      StartSessionCallback callback) final {
+      StartSessionCallback callback) override {
     mojo::PendingRemote<mojom::blink::PictureInPictureSession> session_remote;
     session_ = std::make_unique<VideoWakeLockPictureInPictureSession>(
         session_remote.InitWithNewPipeAndPassReceiver());
@@ -90,8 +89,19 @@
 
 class VideoWakeLockMediaPlayer final : public EmptyWebMediaPlayer {
  public:
-  ReadyState GetReadyState() const final { return kReadyStateHaveMetadata; }
-  bool HasVideo() const final { return true; }
+  ReadyState GetReadyState() const override { return kReadyStateHaveMetadata; }
+  bool HasVideo() const override { return true; }
+  void OnRequestPictureInPicture() override {
+    // Use a fake but valid viz::SurfaceId.
+    surface_id_ = viz::SurfaceId(
+        viz::FrameSinkId(1, 1),
+        viz::LocalSurfaceId(11,
+                            base::UnguessableToken::Deserialize(0x111111, 0)));
+  }
+  absl::optional<viz::SurfaceId> GetSurfaceId() override { return surface_id_; }
+
+ private:
+  absl::optional<viz::SurfaceId> surface_id_;
 };
 
 class VideoWakeLockFrameClient : public test::MediaStubLocalFrameClient {
diff --git a/third_party/blink/renderer/core/html/parser/atomic_html_token.h b/third_party/blink/renderer/core/html/parser/atomic_html_token.h
index 912f26a..f527403 100644
--- a/third_party/blink/renderer/core/html/parser/atomic_html_token.h
+++ b/third_party/blink/renderer/core/html/parser/atomic_html_token.h
@@ -28,7 +28,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "base/notreached.h"
 #include "third_party/blink/renderer/core/dom/attribute.h"
 #include "third_party/blink/renderer/core/html/parser/compact_html_token.h"
@@ -189,6 +188,9 @@
     DCHECK(UsesName());
   }
 
+  AtomicHTMLToken(const AtomicHTMLToken&) = delete;
+  AtomicHTMLToken& operator=(const AtomicHTMLToken&) = delete;
+
 #ifndef NDEBUG
   void Show() const;
 #endif
@@ -218,8 +220,6 @@
   bool duplicate_attribute_ = false;
 
   Vector<Attribute> attributes_;
-
-  DISALLOW_COPY_AND_ASSIGN(AtomicHTMLToken);
 };
 
 inline void AtomicHTMLToken::InitializeAttributes(
diff --git a/third_party/blink/renderer/core/html/parser/background_html_input_stream.h b/third_party/blink/renderer/core/html/parser/background_html_input_stream.h
index 970bbf5..f11a4c0 100644
--- a/third_party/blink/renderer/core/html/parser/background_html_input_stream.h
+++ b/third_party/blink/renderer/core/html/parser/background_html_input_stream.h
@@ -27,7 +27,6 @@
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_BACKGROUND_HTML_INPUT_STREAM_H_
 
 #include "base/dcheck_is_on.h"
-#include "base/macros.h"
 #include "third_party/blink/renderer/platform/text/segmented_string.h"
 #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
 #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
@@ -42,6 +41,9 @@
 
  public:
   BackgroundHTMLInputStream();
+  BackgroundHTMLInputStream(const BackgroundHTMLInputStream&) = delete;
+  BackgroundHTMLInputStream& operator=(const BackgroundHTMLInputStream&) =
+      delete;
 
   void Append(const String&);
   void Close();
@@ -93,8 +95,6 @@
   wtf_size_t total_checkpoint_token_count_;
 
   void UpdateTotalCheckpointTokenCount();
-
-  DISALLOW_COPY_AND_ASSIGN(BackgroundHTMLInputStream);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/background_html_parser.h b/third_party/blink/renderer/core/html/parser/background_html_parser.h
index 608b467f..c867f15 100644
--- a/third_party/blink/renderer/core/html/parser/background_html_parser.h
+++ b/third_party/blink/renderer/core/html/parser/background_html_parser.h
@@ -28,7 +28,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
@@ -69,6 +68,9 @@
             const MediaValuesCached::MediaValuesCachedData&,
             bool priority_hints_origin_trial_enabled);
 
+  BackgroundHTMLParser(const BackgroundHTMLParser&) = delete;
+  BackgroundHTMLParser& operator=(const BackgroundHTMLParser&) = delete;
+
   struct Checkpoint {
     USING_FAST_MALLOC(Checkpoint);
 
@@ -128,8 +130,6 @@
   bool starting_script_;
 
   base::WeakPtrFactory<BackgroundHTMLParser> weak_factory_{this};
-
-  DISALLOW_COPY_AND_ASSIGN(BackgroundHTMLParser);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/css_preload_scanner.h b/third_party/blink/renderer/core/html/parser/css_preload_scanner.h
index db259a95..8ae23d7c 100644
--- a/third_party/blink/renderer/core/html/parser/css_preload_scanner.h
+++ b/third_party/blink/renderer/core/html/parser/css_preload_scanner.h
@@ -27,7 +27,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_CSS_PRELOAD_SCANNER_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_CSS_PRELOAD_SCANNER_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/html/parser/html_token.h"
 #include "third_party/blink/renderer/core/html/parser/preload_request.h"
 #include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
@@ -41,6 +40,8 @@
 
  public:
   CSSPreloadScanner();
+  CSSPreloadScanner(const CSSPreloadScanner&) = delete;
+  CSSPreloadScanner& operator=(const CSSPreloadScanner&) = delete;
   ~CSSPreloadScanner();
 
   void Reset();
@@ -96,8 +97,6 @@
   PreloadRequestStream* requests_ = nullptr;
   const KURL* predicted_base_element_url_ = nullptr;
   const PreloadRequest::ExclusionInfo* exclusion_info_;
-
-  DISALLOW_COPY_AND_ASSIGN(CSSPreloadScanner);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_construction_site.h b/third_party/blink/renderer/core/html/parser/html_construction_site.h
index 6cb38c5..9ac353a 100644
--- a/third_party/blink/renderer/core/html/parser/html_construction_site.h
+++ b/third_party/blink/renderer/core/html/parser/html_construction_site.h
@@ -27,7 +27,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_CONSTRUCTION_SITE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_CONSTRUCTION_SITE_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/dom/document.h"
 #include "third_party/blink/renderer/core/dom/parser_content_policy.h"
 #include "third_party/blink/renderer/core/html/parser/html_element_stack.h"
@@ -111,6 +110,8 @@
   HTMLConstructionSite(HTMLParserReentryPermit*,
                        Document&,
                        ParserContentPolicy);
+  HTMLConstructionSite(const HTMLConstructionSite&) = delete;
+  HTMLConstructionSite& operator=(const HTMLConstructionSite&) = delete;
   ~HTMLConstructionSite();
   void Trace(Visitor*) const;
 
@@ -222,7 +223,6 @@
 
   class RedirectToFosterParentGuard {
     STACK_ALLOCATED();
-    DISALLOW_COPY_AND_ASSIGN(RedirectToFosterParentGuard);
 
    public:
     RedirectToFosterParentGuard(HTMLConstructionSite& tree)
@@ -231,6 +231,10 @@
       tree_.redirect_attach_to_foster_parent_ = true;
     }
 
+    RedirectToFosterParentGuard(const RedirectToFosterParentGuard&) = delete;
+    RedirectToFosterParentGuard& operator=(const RedirectToFosterParentGuard&) =
+        delete;
+
     ~RedirectToFosterParentGuard() {
       tree_.redirect_attach_to_foster_parent_ = was_redirecting_before_;
     }
@@ -346,8 +350,6 @@
   bool redirect_attach_to_foster_parent_;
 
   bool in_quirks_mode_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLConstructionSite);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_element_stack.h b/third_party/blink/renderer/core/html/parser/html_element_stack.h
index 8380d7c8..fc50b2a 100644
--- a/third_party/blink/renderer/core/html/parser/html_element_stack.h
+++ b/third_party/blink/renderer/core/html/parser/html_element_stack.h
@@ -27,7 +27,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_ELEMENT_STACK_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_ELEMENT_STACK_H_
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "third_party/blink/renderer/core/html/parser/html_stack_item.h"
 #include "third_party/blink/renderer/platform/wtf/forward.h"
@@ -45,10 +44,14 @@
 
  public:
   HTMLElementStack();
+  HTMLElementStack(const HTMLElementStack&) = delete;
+  HTMLElementStack& operator=(const HTMLElementStack&) = delete;
 
   class ElementRecord final : public GarbageCollected<ElementRecord> {
    public:
     ElementRecord(HTMLStackItem*, ElementRecord*);
+    ElementRecord(const ElementRecord&) = delete;
+    ElementRecord& operator=(const ElementRecord&) = delete;
 
     Element* GetElement() const { return item_->GetElement(); }
     ContainerNode* GetNode() const { return item_->GetNode(); }
@@ -70,8 +73,6 @@
 
     Member<HTMLStackItem> item_;
     Member<ElementRecord> next_;
-
-    DISALLOW_COPY_AND_ASSIGN(ElementRecord);
   };
 
   unsigned StackDepth() const { return stack_depth_; }
@@ -187,8 +188,6 @@
   Member<Element> head_element_;
   Member<Element> body_element_;
   unsigned stack_depth_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLElementStack);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_formatting_element_list.h b/third_party/blink/renderer/core/html/parser/html_formatting_element_list.h
index bb2f43f..05106741 100644
--- a/third_party/blink/renderer/core/html/parser/html_formatting_element_list.h
+++ b/third_party/blink/renderer/core/html/parser/html_formatting_element_list.h
@@ -26,7 +26,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_FORMATTING_ELEMENT_LIST_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_FORMATTING_ELEMENT_LIST_H_
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "third_party/blink/renderer/core/html/parser/html_stack_item.h"
 #include "third_party/blink/renderer/platform/wtf/forward.h"
@@ -42,6 +41,9 @@
 
  public:
   HTMLFormattingElementList();
+  HTMLFormattingElementList(const HTMLFormattingElementList&) = delete;
+  HTMLFormattingElementList& operator=(const HTMLFormattingElementList&) =
+      delete;
 
   // Ideally Entry would be private, but HTMLTreeBuilder has to coordinate
   // between the HTMLFormattingElementList and HTMLElementStack and needs access
@@ -138,8 +140,6 @@
   void EnsureNoahsArkCondition(HTMLStackItem*);
 
   HeapVector<Entry> entries_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLFormattingElementList);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_input_stream.h b/third_party/blink/renderer/core/html/parser/html_input_stream.h
index 61791f4f..8b1c9b3 100644
--- a/third_party/blink/renderer/core/html/parser/html_input_stream.h
+++ b/third_party/blink/renderer/core/html/parser/html_input_stream.h
@@ -26,7 +26,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_INPUT_STREAM_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_INPUT_STREAM_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/html/parser/input_stream_preprocessor.h"
 #include "third_party/blink/renderer/platform/text/segmented_string.h"
 #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
@@ -54,6 +53,8 @@
 
  public:
   HTMLInputStream() : last_(&first_) {}
+  HTMLInputStream(const HTMLInputStream&) = delete;
+  HTMLInputStream& operator=(const HTMLInputStream&) = delete;
 
   void AppendToEnd(const SegmentedString& string) { last_->Append(string); }
 
@@ -104,8 +105,6 @@
  private:
   SegmentedString first_;
   SegmentedString* last_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLInputStream);
 };
 
 class InsertionPointRecord {
@@ -123,6 +122,9 @@
     input_stream_->Current().SetCurrentPosition(line_, column_, 0);
   }
 
+  InsertionPointRecord(const InsertionPointRecord&) = delete;
+  InsertionPointRecord& operator=(const InsertionPointRecord&) = delete;
+
   ~InsertionPointRecord() {
     // Some inserted text may have remained in input stream. E.g. if script has
     // written "&amp" or "<table", it stays in buffer because it cannot be
@@ -140,8 +142,6 @@
   SegmentedString next_;
   OrdinalNumber line_;
   OrdinalNumber column_;
-
-  DISALLOW_COPY_AND_ASSIGN(InsertionPointRecord);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_meta_charset_parser.h b/third_party/blink/renderer/core/html/parser/html_meta_charset_parser.h
index 62f13af..835b3dd 100644
--- a/third_party/blink/renderer/core/html/parser/html_meta_charset_parser.h
+++ b/third_party/blink/renderer/core/html/parser/html_meta_charset_parser.h
@@ -28,7 +28,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/blink/renderer/core/html/parser/html_token.h"
 #include "third_party/blink/renderer/platform/text/segmented_string.h"
@@ -44,6 +43,8 @@
 
  public:
   HTMLMetaCharsetParser();
+  HTMLMetaCharsetParser(const HTMLMetaCharsetParser&) = delete;
+  HTMLMetaCharsetParser& operator=(const HTMLMetaCharsetParser&) = delete;
   ~HTMLMetaCharsetParser();
 
   // Returns true if done checking, regardless whether an encoding is found.
@@ -62,8 +63,6 @@
 
   bool done_checking_;
   WTF::TextEncoding encoding_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLMetaCharsetParser);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_parser_metrics.h b/third_party/blink/renderer/core/html/parser/html_parser_metrics.h
index 98760a87..40db75a 100644
--- a/third_party/blink/renderer/core/html/parser/html_parser_metrics.h
+++ b/third_party/blink/renderer/core/html/parser/html_parser_metrics.h
@@ -19,6 +19,8 @@
 class CORE_EXPORT HTMLParserMetrics {
  public:
   HTMLParserMetrics(int64_t source_id, ukm::UkmRecorder*);
+  HTMLParserMetrics(const HTMLParserMetrics&) = delete;
+  HTMLParserMetrics& operator=(const HTMLParserMetrics&) = delete;
   ~HTMLParserMetrics() = default;
 
   void AddChunk(base::TimeDelta elapsed_time, unsigned tokens_parsed);
@@ -56,8 +58,6 @@
   // Track total number of characters parsed in one instantiation of the
   // parser.
   unsigned input_character_count = 0;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLParserMetrics);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_parser_reentry_permit.h b/third_party/blink/renderer/core/html/parser/html_parser_reentry_permit.h
index 33ba6e3..2372eb1 100644
--- a/third_party/blink/renderer/core/html/parser/html_parser_reentry_permit.h
+++ b/third_party/blink/renderer/core/html/parser/html_parser_reentry_permit.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_PARSER_REENTRY_PERMIT_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_PARSER_REENTRY_PERMIT_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/platform/heap/handle.h"
 #include "third_party/blink/renderer/platform/heap/heap.h"
 
@@ -39,6 +38,8 @@
     : public GarbageCollected<HTMLParserReentryPermit> {
  public:
   HTMLParserReentryPermit();
+  HTMLParserReentryPermit(const HTMLParserReentryPermit&) = delete;
+  HTMLParserReentryPermit& operator=(const HTMLParserReentryPermit&) = delete;
   ~HTMLParserReentryPermit() = default;
 
   unsigned ScriptNestingLevel() const { return script_nesting_level_; }
@@ -57,6 +58,11 @@
       permit_->script_nesting_level_++;
     }
 
+    ScriptNestingLevelIncrementer(const ScriptNestingLevelIncrementer&) =
+        delete;
+    ScriptNestingLevelIncrementer& operator=(
+        const ScriptNestingLevelIncrementer&) = delete;
+
     ScriptNestingLevelIncrementer(ScriptNestingLevelIncrementer&&) = default;
 
     ~ScriptNestingLevelIncrementer() {
@@ -67,8 +73,6 @@
 
    private:
     HTMLParserReentryPermit* permit_;
-
-    DISALLOW_COPY_AND_ASSIGN(ScriptNestingLevelIncrementer);
   };
 
   ScriptNestingLevelIncrementer IncrementScriptNestingLevel() {
@@ -83,8 +87,6 @@
 
   // https://html.spec.whatwg.org/C/#parser-pause-flag
   bool parser_pause_flag_ = false;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLParserReentryPermit);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_parser_scheduler.h b/third_party/blink/renderer/core/html/parser/html_parser_scheduler.h
index 8196c63c..d94afe36 100644
--- a/third_party/blink/renderer/core/html/parser/html_parser_scheduler.h
+++ b/third_party/blink/renderer/core/html/parser/html_parser_scheduler.h
@@ -26,7 +26,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_PARSER_SCHEDULER_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_PARSER_SCHEDULER_H_
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/timer/elapsed_timer.h"
@@ -58,6 +57,8 @@
  public:
   HTMLParserScheduler(HTMLDocumentParser*,
                       scoped_refptr<base::SingleThreadTaskRunner>);
+  HTMLParserScheduler(const HTMLParserScheduler&) = delete;
+  HTMLParserScheduler& operator=(const HTMLParserScheduler&) = delete;
   ~HTMLParserScheduler();
 
   bool IsScheduledForUnpause() const;
@@ -76,8 +77,6 @@
   scoped_refptr<base::SingleThreadTaskRunner> loading_task_runner_;
 
   TaskHandle cancellable_continue_parse_task_handle_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLParserScheduler);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_preload_scanner.h b/third_party/blink/renderer/core/html/parser/html_preload_scanner.h
index fc5e997..b966086 100644
--- a/third_party/blink/renderer/core/html/parser/html_preload_scanner.h
+++ b/third_party/blink/renderer/core/html/parser/html_preload_scanner.h
@@ -30,7 +30,6 @@
 #include <memory>
 #include <utility>
 
-#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 #include "third_party/blink/renderer/core/core_export.h"
@@ -86,6 +85,8 @@
                       const MediaValuesCached::MediaValuesCachedData&,
                       const ScannerType,
                       bool priority_hints_origin_trial_enabled);
+  TokenPreloadScanner(const TokenPreloadScanner&) = delete;
+  TokenPreloadScanner& operator=(const TokenPreloadScanner&) = delete;
   ~TokenPreloadScanner();
 
   void Scan(const HTMLToken&,
@@ -174,8 +175,6 @@
   bool did_rewind_ = false;
 
   Vector<Checkpoint> checkpoints_;
-
-  DISALLOW_COPY_AND_ASSIGN(TokenPreloadScanner);
 };
 
 class CORE_EXPORT HTMLPreloadScanner {
@@ -187,6 +186,8 @@
                      std::unique_ptr<CachedDocumentParameters>,
                      const MediaValuesCached::MediaValuesCachedData&,
                      const TokenPreloadScanner::ScannerType);
+  HTMLPreloadScanner(const HTMLPreloadScanner&) = delete;
+  HTMLPreloadScanner& operator=(const HTMLPreloadScanner&) = delete;
   ~HTMLPreloadScanner();
 
   void AppendToEnd(const SegmentedString&);
@@ -199,8 +200,6 @@
   SegmentedString source_;
   HTMLToken token_;
   std::unique_ptr<HTMLTokenizer> tokenizer_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLPreloadScanner);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_resource_preloader.h b/third_party/blink/renderer/core/html/parser/html_resource_preloader.h
index fbd91f7..de2dce8 100644
--- a/third_party/blink/renderer/core/html/parser/html_resource_preloader.h
+++ b/third_party/blink/renderer/core/html/parser/html_resource_preloader.h
@@ -28,7 +28,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/html/parser/preload_request.h"
 #include "third_party/blink/renderer/core/html/parser/resource_preloader.h"
 #include "third_party/blink/renderer/platform/heap/heap.h"
@@ -45,6 +44,8 @@
 
  public:
   explicit HTMLResourcePreloader(Document&);
+  HTMLResourcePreloader(const HTMLResourcePreloader&) = delete;
+  HTMLResourcePreloader& operator=(const HTMLResourcePreloader&) = delete;
 
   void Trace(Visitor*) const;
 
@@ -57,8 +58,6 @@
   bool AllowPreloadRequest(PreloadRequest* preload) const;
 
   Member<Document> document_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLResourcePreloader);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_token.h b/third_party/blink/renderer/core/html/parser/html_token.h
index f6bac9cd..9a8043d 100644
--- a/third_party/blink/renderer/core/html/parser/html_token.h
+++ b/third_party/blink/renderer/core/html/parser/html_token.h
@@ -30,7 +30,6 @@
 #include <utility>
 
 #include "base/dcheck_is_on.h"
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/dom/attribute.h"
 #include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h"
 #include "third_party/blink/renderer/core/html/parser/literal_buffer.h"
@@ -46,14 +45,14 @@
       : has_public_identifier_(false),
         has_system_identifier_(false),
         force_quirks_(false) {}
+  DoctypeData(const DoctypeData&) = delete;
+  DoctypeData& operator=(const DoctypeData&) = delete;
 
   bool has_public_identifier_;
   bool has_system_identifier_;
   WTF::Vector<UChar> public_identifier_;
   WTF::Vector<UChar> system_identifier_;
   bool force_quirks_;
-
-  DISALLOW_COPY_AND_ASSIGN(DoctypeData);
 };
 
 static inline Attribute* FindAttributeInVector(Vector<Attribute>& attributes,
@@ -156,6 +155,8 @@
   typedef LiteralBuffer<UChar, 256> DataVector;
 
   HTMLToken() { Clear(); }
+  HTMLToken(const HTMLToken&) = delete;
+  HTMLToken& operator=(const HTMLToken&) = delete;
 
   void Clear() {
     type_ = kUninitialized;
@@ -438,8 +439,6 @@
 
   // For DOCTYPE
   std::unique_ptr<DoctypeData> doctype_data_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLToken);
 };
 
 #ifndef NDEBUG
diff --git a/third_party/blink/renderer/core/html/parser/html_tokenizer.h b/third_party/blink/renderer/core/html/parser/html_tokenizer.h
index e261abf0..90bb10f 100644
--- a/third_party/blink/renderer/core/html/parser/html_tokenizer.h
+++ b/third_party/blink/renderer/core/html/parser/html_tokenizer.h
@@ -27,7 +27,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_TOKENIZER_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_TOKENIZER_H_
 
-#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/core/html/parser/html_parser_options.h"
@@ -42,6 +41,8 @@
 
  public:
   explicit HTMLTokenizer(const HTMLParserOptions&);
+  HTMLTokenizer(const HTMLTokenizer&) = delete;
+  HTMLTokenizer& operator=(const HTMLTokenizer&) = delete;
   ~HTMLTokenizer();
 
   void Reset();
@@ -283,8 +284,6 @@
   LiteralBuffer<LChar, 32> buffered_end_tag_name_;
 
   HTMLParserOptions options_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLTokenizer);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/html_tree_builder.cc b/third_party/blink/renderer/core/html/parser/html_tree_builder.cc
index c8e08bf..2b3d550 100644
--- a/third_party/blink/renderer/core/html/parser/html_tree_builder.cc
+++ b/third_party/blink/renderer/core/html/parser/html_tree_builder.cc
@@ -28,7 +28,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/dom/document.h"
 #include "third_party/blink/renderer/core/dom/document_fragment.h"
 #include "third_party/blink/renderer/core/dom/element_traversal.h"
@@ -140,6 +139,9 @@
     DCHECK(!IsEmpty());
   }
 
+  CharacterTokenBuffer(const CharacterTokenBuffer&) = delete;
+  CharacterTokenBuffer& operator=(const CharacterTokenBuffer&) = delete;
+
   ~CharacterTokenBuffer() { DCHECK(IsEmpty()); }
 
   bool IsEmpty() const { return current_ == end_; }
@@ -225,8 +227,6 @@
   scoped_refptr<StringImpl> characters_;
   unsigned current_;
   unsigned end_;
-
-  DISALLOW_COPY_AND_ASSIGN(CharacterTokenBuffer);
 };
 
 HTMLTreeBuilder::HTMLTreeBuilder(HTMLDocumentParser* parser,
diff --git a/third_party/blink/renderer/core/html/parser/html_tree_builder.h b/third_party/blink/renderer/core/html/parser/html_tree_builder.h
index 18c19c9..535be83 100644
--- a/third_party/blink/renderer/core/html/parser/html_tree_builder.h
+++ b/third_party/blink/renderer/core/html/parser/html_tree_builder.h
@@ -28,7 +28,6 @@
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_TREE_BUILDER_H_
 
 #include "base/dcheck_is_on.h"
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "third_party/blink/renderer/core/html/parser/html_construction_site.h"
 #include "third_party/blink/renderer/core/html/parser/html_element_stack.h"
@@ -63,6 +62,8 @@
                   ParserContentPolicy,
                   const HTMLParserOptions&,
                   bool include_shadow_roots);
+  HTMLTreeBuilder(const HTMLTreeBuilder&) = delete;
+  HTMLTreeBuilder& operator=(const HTMLTreeBuilder&) = delete;
   ~HTMLTreeBuilder();
   void Trace(Visitor*) const;
 
@@ -207,6 +208,8 @@
 
    public:
     FragmentParsingContext() = default;
+    FragmentParsingContext(const FragmentParsingContext&) = delete;
+    FragmentParsingContext& operator=(const FragmentParsingContext&) = delete;
     void Init(DocumentFragment*, Element* context_element);
 
     DocumentFragment* Fragment() const { return fragment_; }
@@ -224,8 +227,6 @@
    private:
     Member<DocumentFragment> fragment_;
     Member<HTMLStackItem> context_element_stack_item_;
-
-    DISALLOW_COPY_AND_ASSIGN(FragmentParsingContext);
   };
 
   // https://html.spec.whatwg.org/C/#frameset-ok-flag
@@ -263,8 +264,6 @@
   TextPosition script_to_process_start_position_;
 
   HTMLParserOptions options_;
-
-  DISALLOW_COPY_AND_ASSIGN(HTMLTreeBuilder);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/input_stream_preprocessor.h b/third_party/blink/renderer/core/html/parser/input_stream_preprocessor.h
index c4e65fe3..afebe8e 100644
--- a/third_party/blink/renderer/core/html/parser/input_stream_preprocessor.h
+++ b/third_party/blink/renderer/core/html/parser/input_stream_preprocessor.h
@@ -28,7 +28,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_INPUT_STREAM_PREPROCESSOR_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_INPUT_STREAM_PREPROCESSOR_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/platform/text/segmented_string.h"
 #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
 
@@ -47,6 +46,8 @@
  public:
   explicit InputStreamPreprocessor(Tokenizer* tokenizer)
       : tokenizer_(tokenizer) {}
+  InputStreamPreprocessor(const InputStreamPreprocessor&) = delete;
+  InputStreamPreprocessor& operator=(const InputStreamPreprocessor&) = delete;
 
   // http://www.whatwg.org/specs/web-apps/current-work/#next-input-character
   // Returns whether we succeeded in peeking at the next character.
@@ -166,8 +167,6 @@
 
   Tokenizer* tokenizer_;
   bool skip_next_new_line_ = false;
-
-  DISALLOW_COPY_AND_ASSIGN(InputStreamPreprocessor);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/literal_buffer.h b/third_party/blink/renderer/core/html/parser/literal_buffer.h
index e0bad99..91c0675 100644
--- a/third_party/blink/renderer/core/html/parser/literal_buffer.h
+++ b/third_party/blink/renderer/core/html/parser/literal_buffer.h
@@ -10,7 +10,6 @@
 #include <type_traits>
 #include "base/bits.h"
 #include "base/compiler_specific.h"
-#include "base/macros.h"
 #include "third_party/blink/renderer/platform/wtf/allocator/partitions.h"
 #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
 #include "third_party/blink/renderer/platform/wtf/wtf_size_t.h"
diff --git a/third_party/blink/renderer/core/html/parser/nesting_level_incrementer.h b/third_party/blink/renderer/core/html/parser/nesting_level_incrementer.h
index af380da..082d088 100644
--- a/third_party/blink/renderer/core/html/parser/nesting_level_incrementer.h
+++ b/third_party/blink/renderer/core/html/parser/nesting_level_incrementer.h
@@ -26,7 +26,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_NESTING_LEVEL_INCREMENTER_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_NESTING_LEVEL_INCREMENTER_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/platform/heap/handle.h"
 
 namespace blink {
@@ -40,12 +39,13 @@
     ++(*nesting_level_);
   }
 
+  NestingLevelIncrementer(const NestingLevelIncrementer&) = delete;
+  NestingLevelIncrementer& operator=(const NestingLevelIncrementer&) = delete;
+
   ~NestingLevelIncrementer() { --(*nesting_level_); }
 
  private:
   unsigned* nesting_level_;
-
-  DISALLOW_COPY_AND_ASSIGN(NestingLevelIncrementer);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/html/parser/text_resource_decoder.h b/third_party/blink/renderer/core/html/parser/text_resource_decoder.h
index 9873315..7c19e9ac 100644
--- a/third_party/blink/renderer/core/html/parser/text_resource_decoder.h
+++ b/third_party/blink/renderer/core/html/parser/text_resource_decoder.h
@@ -25,7 +25,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/platform/loader/fetch/text_resource_decoder_options.h"
@@ -59,6 +58,8 @@
   };
 
   explicit TextResourceDecoder(const TextResourceDecoderOptions&);
+  TextResourceDecoder(const TextResourceDecoder&) = delete;
+  TextResourceDecoder& operator=(const TextResourceDecoder&) = delete;
   ~TextResourceDecoder();
 
   void SetEncoding(const WTF::TextEncoding&, EncodingSource);
@@ -100,8 +101,6 @@
   bool detection_completed_;
 
   std::unique_ptr<HTMLMetaCharsetParser> charset_parser_;
-
-  DISALLOW_COPY_AND_ASSIGN(TextResourceDecoder);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/inspector/inspector_page_agent.cc b/third_party/blink/renderer/core/inspector/inspector_page_agent.cc
index ae249656..6c467ae 100644
--- a/third_party/blink/renderer/core/inspector/inspector_page_agent.cc
+++ b/third_party/blink/renderer/core/inspector/inspector_page_agent.cc
@@ -35,8 +35,10 @@
 
 #include "base/containers/span.h"
 #include "build/build_config.h"
+#include "third_party/blink/public/common/frame/frame_ad_evidence.h"
 #include "third_party/blink/public/common/origin_trials/trial_token.h"
 #include "third_party/blink/public/common/widget/screen_info.h"
+#include "third_party/blink/public/mojom/ad_tagging/ad_evidence.mojom-blink.h"
 #include "third_party/blink/renderer/bindings/core/v8/script_controller.h"
 #include "third_party/blink/renderer/bindings/core/v8/script_regexp.h"
 #include "third_party/blink/renderer/bindings/core/v8/script_source_code.h"
@@ -1327,6 +1329,43 @@
   return trials;
 }
 
+protocol::Page::AdFrameType BuildAdFrameType(LocalFrame* frame) {
+  if (frame->IsAdRoot())
+    return protocol::Page::AdFrameTypeEnum::Root;
+  if (frame->IsAdSubframe())
+    return protocol::Page::AdFrameTypeEnum::Child;
+  return protocol::Page::AdFrameTypeEnum::None;
+}
+
+std::unique_ptr<protocol::Page::AdFrameStatus> BuildAdFrameStatus(
+    LocalFrame* frame) {
+  if (!frame->AdEvidence() || !frame->AdEvidence()->is_complete()) {
+    return protocol::Page::AdFrameStatus::create()
+        .setAdFrameType(protocol::Page::AdFrameTypeEnum::None)
+        .build();
+  }
+  const FrameAdEvidence& evidence = *frame->AdEvidence();
+  auto explanations =
+      std::make_unique<protocol::Array<protocol::Page::AdFrameExplanation>>();
+  if (evidence.parent_is_ad()) {
+    explanations->push_back(protocol::Page::AdFrameExplanationEnum::ParentIsAd);
+  }
+  if (evidence.created_by_ad_script() ==
+      mojom::blink::FrameCreationStackEvidence::kCreatedByAdScript) {
+    explanations->push_back(
+        protocol::Page::AdFrameExplanationEnum::CreatedByAdScript);
+  }
+  if (evidence.most_restrictive_filter_list_result() ==
+      mojom::blink::FilterListResult::kMatchedBlockingRule) {
+    explanations->push_back(
+        protocol::Page::AdFrameExplanationEnum::MatchedBlockingRule);
+  }
+  return protocol::Page::AdFrameStatus::create()
+      .setAdFrameType(BuildAdFrameType(frame))
+      .setExplanations(std::move(explanations))
+      .build();
+}
+
 }  // namespace
 
 std::unique_ptr<protocol::Page::Frame> InspectorPageAgent::BuildObjectForFrame(
@@ -1366,13 +1405,7 @@
   }
   if (loader && !loader->UnreachableURL().IsEmpty())
     frame_object->setUnreachableUrl(loader->UnreachableURL().GetString());
-  if (frame->IsAdRoot()) {
-    frame_object->setAdFrameType(protocol::Page::AdFrameTypeEnum::Root);
-  } else if (frame->IsAdSubframe()) {
-    frame_object->setAdFrameType(protocol::Page::AdFrameTypeEnum::Child);
-  } else {
-    frame_object->setAdFrameType(protocol::Page::AdFrameTypeEnum::None);
-  }
+  frame_object->setAdFrameStatus(BuildAdFrameStatus(frame));
   auto origin_trials = CreateOriginTrials(frame->DomWindow());
   if (!origin_trials->empty())
     frame_object->setOriginTrials(std::move(origin_trials));
diff --git a/third_party/blink/renderer/core/messaging/blink_cloneable_message.h b/third_party/blink/renderer/core/messaging/blink_cloneable_message.h
index 7d94b45ef..499c1565 100644
--- a/third_party/blink/renderer/core/messaging/blink_cloneable_message.h
+++ b/third_party/blink/renderer/core/messaging/blink_cloneable_message.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_CLONEABLE_MESSAGE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_CLONEABLE_MESSAGE_H_
 
-#include "base/macros.h"
 #include "base/unguessable_token.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 #include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
@@ -21,18 +20,14 @@
 // struct uses blink types, while the other struct uses std:: types.
 struct CORE_EXPORT BlinkCloneableMessage {
   BlinkCloneableMessage();
-  ~BlinkCloneableMessage();
-
   BlinkCloneableMessage(BlinkCloneableMessage&&);
   BlinkCloneableMessage& operator=(BlinkCloneableMessage&&);
+  ~BlinkCloneableMessage();
 
   scoped_refptr<blink::SerializedScriptValue> message;
   scoped_refptr<const blink::SecurityOrigin> sender_origin;
   v8_inspector::V8StackTraceId sender_stack_trace_id;
   absl::optional<base::UnguessableToken> locked_agent_cluster_id;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BlinkCloneableMessage);
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/core/messaging/blink_transferable_message.h b/third_party/blink/renderer/core/messaging/blink_transferable_message.h
index e89ab20..9b455afa 100644
--- a/third_party/blink/renderer/core/messaging/blink_transferable_message.h
+++ b/third_party/blink/renderer/core/messaging/blink_transferable_message.h
@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_TRANSFERABLE_MESSAGE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_TRANSFERABLE_MESSAGE_H_
 
-#include "base/macros.h"
 #include "third_party/abseil-cpp/absl/types/optional.h"
 #include "third_party/blink/public/common/messaging/message_port_channel.h"
 #include "third_party/blink/public/common/messaging/transferable_message.h"
@@ -31,19 +30,15 @@
   static BlinkTransferableMessage FromTransferableMessage(TransferableMessage);
 
   BlinkTransferableMessage();
-  ~BlinkTransferableMessage();
-
   BlinkTransferableMessage(BlinkTransferableMessage&&);
   BlinkTransferableMessage& operator=(BlinkTransferableMessage&&);
+  ~BlinkTransferableMessage();
 
   Vector<MessagePortChannel> ports;
 
   mojom::blink::UserActivationSnapshotPtr user_activation;
 
   bool delegate_payment_request = false;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BlinkTransferableMessage);
 };
 
 CORE_EXPORT scoped_refptr<blink::StaticBitmapImage> ToStaticBitmapImage(
diff --git a/third_party/blink/renderer/core/messaging/blink_transferable_message_mojom_traits_test.cc b/third_party/blink/renderer/core/messaging/blink_transferable_message_mojom_traits_test.cc
index 027689ec..f46bc2b 100644
--- a/third_party/blink/renderer/core/messaging/blink_transferable_message_mojom_traits_test.cc
+++ b/third_party/blink/renderer/core/messaging/blink_transferable_message_mojom_traits_test.cc
@@ -4,7 +4,6 @@
 
 #include "third_party/blink/renderer/core/messaging/blink_transferable_message_mojom_traits.h"
 
-#include "base/macros.h"
 #include "base/memory/scoped_refptr.h"
 #include "mojo/public/cpp/base/big_buffer_mojom_traits.h"
 #include "testing/gtest/include/gtest/gtest.h"
diff --git a/third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker.h b/third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker.h
index 4cd1af3..45322373 100644
--- a/third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker.h
+++ b/third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker.h
@@ -9,12 +9,12 @@
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/platform/heap/heap.h"
 #include "third_party/blink/renderer/platform/heap/member.h"
+#include "third_party/blink/renderer/platform/heap/visitor.h"
 
 namespace blink {
 
 class LocalFrameView;
 class LayoutObject;
-class Visitor;
 
 struct ViewportDescription;
 
diff --git a/third_party/blink/renderer/core/origin_trials/origin_trial_context_test.cc b/third_party/blink/renderer/core/origin_trials/origin_trial_context_test.cc
index cb2e5b4..f004567 100644
--- a/third_party/blink/renderer/core/origin_trials/origin_trial_context_test.cc
+++ b/third_party/blink/renderer/core/origin_trials/origin_trial_context_test.cc
@@ -49,6 +49,8 @@
 class MockTokenValidator : public TrialTokenValidator {
  public:
   MockTokenValidator() = default;
+  MockTokenValidator(const MockTokenValidator&) = delete;
+  MockTokenValidator& operator=(const MockTokenValidator&) = delete;
   ~MockTokenValidator() override = default;
 
   // blink::WebTrialTokenValidator implementation
@@ -96,8 +98,6 @@
   bool is_third_party_;
 
   mutable int call_count_ = 0;
-
-  DISALLOW_COPY_AND_ASSIGN(MockTokenValidator);
 };
 }  // namespace
 
diff --git a/third_party/blink/renderer/core/speculation_rules/speculation_rules_origin_trial_test.cc b/third_party/blink/renderer/core/speculation_rules/speculation_rules_origin_trial_test.cc
index 0015a54..dded728 100644
--- a/third_party/blink/renderer/core/speculation_rules/speculation_rules_origin_trial_test.cc
+++ b/third_party/blink/renderer/core/speculation_rules/speculation_rules_origin_trial_test.cc
@@ -24,7 +24,7 @@
 namespace blink {
 namespace {
 
-constexpr char kOriginTrialPublicKey[] = {
+constexpr uint8_t kOriginTrialPublicKey[] = {
     0x75, 0x10, 0xac, 0xf9, 0x3a, 0x1c, 0xb8, 0xa9, 0x28, 0x70, 0xd2,
     0x9a, 0xd0, 0x0b, 0x59, 0xe1, 0xac, 0x2b, 0xb7, 0xd5, 0xca, 0x1f,
     0x64, 0x90, 0x08, 0x8e, 0xa8, 0xe0, 0x56, 0x3a, 0x04, 0xd0,
@@ -69,7 +69,8 @@
   }
   bool IsOriginTrialsSupported() const override { return true; }
   std::vector<base::StringPiece> GetPublicKeys() const override {
-    return {{kOriginTrialPublicKey, base::size(kOriginTrialPublicKey)}};
+    return {{reinterpret_cast<const char*>(kOriginTrialPublicKey),
+             base::size(kOriginTrialPublicKey)}};
   }
   bool IsOriginSecure(const GURL& url) const override { return true; }
 };
diff --git a/third_party/blink/renderer/modules/encoding/text_encoder_stream.cc b/third_party/blink/renderer/modules/encoding/text_encoder_stream.cc
index 9805a0f..d7efa9d 100644
--- a/third_party/blink/renderer/modules/encoding/text_encoder_stream.cc
+++ b/third_party/blink/renderer/modules/encoding/text_encoder_stream.cc
@@ -101,10 +101,7 @@
   }
 
  private:
-  static std::string ReplacementCharacterInUtf8() {
-    constexpr char kRawBytes[] = {0xEF, 0xBF, 0xBD};
-    return std::string(kRawBytes, sizeof(kRawBytes));
-  }
+  static std::string ReplacementCharacterInUtf8() { return "\ufffd"; }
 
   static DOMUint8Array* CreateDOMUint8ArrayFromTwoStdStringsConcatenated(
       const std::string& string1,
diff --git a/third_party/blink/renderer/modules/mediastream/media_stream_track.cc b/third_party/blink/renderer/modules/mediastream/media_stream_track.cc
index 2467ff8db..fee493c 100644
--- a/third_party/blink/renderer/modules/mediastream/media_stream_track.cc
+++ b/third_party/blink/renderer/modules/mediastream/media_stream_track.cc
@@ -33,7 +33,6 @@
 #include "third_party/blink/public/platform/modules/webrtc/webrtc_logging.h"
 #include "third_party/blink/public/web/modules/mediastream/media_stream_video_source.h"
 #include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
-#include "third_party/blink/renderer/bindings/modules/v8/v8_capture_handle.h"
 #include "third_party/blink/renderer/bindings/modules/v8/v8_capture_handle_change_event.h"
 #include "third_party/blink/renderer/bindings/modules/v8/v8_capture_handle_change_event_init.h"
 #include "third_party/blink/renderer/bindings/modules/v8/v8_double_range.h"
@@ -691,19 +690,27 @@
     }
     settings->setCursor(value);
   }
-  if (platform_settings.capture_handle.has_value()) {
-    const auto& settings_handle = platform_settings.capture_handle.value();
-    auto* capture_handle = CaptureHandle::Create();
-    if (settings_handle.origin) {
-      capture_handle->setOrigin(settings_handle.origin);
-    }
-    capture_handle->setHandle(settings_handle.handle);
-    settings->setCaptureHandle(capture_handle);
-  }
 
   return settings;
 }
 
+CaptureHandle* MediaStreamTrack::getCaptureHandle() const {
+  MediaStreamTrackPlatform::CaptureHandle platform_capture_handle =
+      component_->GetCaptureHandle();
+
+  if (platform_capture_handle.IsEmpty()) {
+    return nullptr;
+  }
+
+  auto* capture_handle = CaptureHandle::Create();
+  if (platform_capture_handle.origin) {
+    capture_handle->setOrigin(platform_capture_handle.origin);
+  }
+  capture_handle->setHandle(platform_capture_handle.handle);
+
+  return capture_handle;
+}
+
 ScriptPromise MediaStreamTrack::applyConstraints(
     ScriptState* script_state,
     const MediaTrackConstraints* constraints) {
diff --git a/third_party/blink/renderer/modules/mediastream/media_stream_track.h b/third_party/blink/renderer/modules/mediastream/media_stream_track.h
index e4889c4..fbf420dd 100644
--- a/third_party/blink/renderer/modules/mediastream/media_stream_track.h
+++ b/third_party/blink/renderer/modules/mediastream/media_stream_track.h
@@ -27,8 +27,10 @@
 #define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_TRACK_H_
 
 #include <memory>
+
 #include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
 #include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
+#include "third_party/blink/renderer/bindings/modules/v8/v8_capture_handle.h"
 #include "third_party/blink/renderer/modules/event_target_modules.h"
 #include "third_party/blink/renderer/modules/modules_export.h"
 #include "third_party/blink/renderer/platform/mediastream/media_stream_descriptor.h"
@@ -86,6 +88,7 @@
   MediaTrackCapabilities* getCapabilities() const;
   MediaTrackConstraints* getConstraints() const;
   MediaTrackSettings* getSettings() const;
+  CaptureHandle* getCaptureHandle() const;
   ScriptPromise applyConstraints(ScriptState*, const MediaTrackConstraints*);
 
   // This function is called when constrains have been successfully applied.
diff --git a/third_party/blink/renderer/modules/mediastream/media_stream_track.idl b/third_party/blink/renderer/modules/mediastream/media_stream_track.idl
index 4752701f..2ccb060 100644
--- a/third_party/blink/renderer/modules/mediastream/media_stream_track.idl
+++ b/third_party/blink/renderer/modules/mediastream/media_stream_track.idl
@@ -52,5 +52,7 @@
     MediaTrackCapabilities getCapabilities();
     MediaTrackConstraints getConstraints();
     MediaTrackSettings getSettings();
+    [RuntimeEnabled=CaptureHandle, MeasureAs=CaptureHandle] CaptureHandle? getCaptureHandle();
+
     [CallWith=ScriptState] Promise<void> applyConstraints(optional MediaTrackConstraints constraints = {});
 };
diff --git a/third_party/blink/renderer/modules/mediastream/media_stream_video_track.cc b/third_party/blink/renderer/modules/mediastream/media_stream_video_track.cc
index b67b998..1ac2f4f 100644
--- a/third_party/blink/renderer/modules/mediastream/media_stream_video_track.cc
+++ b/third_party/blink/renderer/modules/mediastream/media_stream_video_track.cc
@@ -701,20 +701,34 @@
     settings.display_surface = info->display_surface;
     settings.logical_surface = info->logical_surface;
     settings.cursor = info->cursor;
-    if (info->capture_handle) {
-      settings.capture_handle.emplace();
-      if (!info->capture_handle->origin.opaque()) {
-        settings.capture_handle->origin =
-            String::FromUTF8(info->capture_handle->origin.Serialize());
-      }
-      settings.capture_handle->handle =
-          WebString::FromUTF16(info->capture_handle->capture_handle);
-    } else {
-      settings.capture_handle = absl::nullopt;
-    }
   }
 }
 
+MediaStreamTrackPlatform::CaptureHandle
+MediaStreamVideoTrack::GetCaptureHandle() {
+  MediaStreamTrackPlatform::CaptureHandle capture_handle;
+
+  const MediaStreamDevice& device = source_->device();
+  if (!device.display_media_info.has_value()) {
+    return capture_handle;
+  }
+  const media::mojom::DisplayMediaInformationPtr& info =
+      device.display_media_info.value();
+
+  if (!info->capture_handle) {
+    return capture_handle;
+  }
+
+  if (!info->capture_handle->origin.opaque()) {
+    capture_handle.origin =
+        String::FromUTF8(info->capture_handle->origin.Serialize());
+  }
+  capture_handle.handle =
+      WebString::FromUTF16(info->capture_handle->capture_handle);
+
+  return capture_handle;
+}
+
 void MediaStreamVideoTrack::OnReadyStateChanged(
     WebMediaStreamSource::ReadyState state) {
   DCHECK_CALLED_ON_VALID_THREAD(main_render_thread_checker_);
diff --git a/third_party/blink/renderer/modules/mediastream/media_stream_video_track.h b/third_party/blink/renderer/modules/mediastream/media_stream_video_track.h
index d24b524f..b3bce346 100644
--- a/third_party/blink/renderer/modules/mediastream/media_stream_video_track.h
+++ b/third_party/blink/renderer/modules/mediastream/media_stream_video_track.h
@@ -85,6 +85,7 @@
       WebMediaStreamTrack::ContentHintType content_hint) override;
   void StopAndNotify(base::OnceClosure callback) override;
   void GetSettings(MediaStreamTrackPlatform::Settings& settings) override;
+  MediaStreamTrackPlatform::CaptureHandle GetCaptureHandle() override;
 
   // Add |sink| to receive state changes on the main render thread and video
   // frames in the |callback| method on the IO-thread.
diff --git a/third_party/blink/renderer/modules/payments/secure_payment_confirmation_helper.cc b/third_party/blink/renderer/modules/payments/secure_payment_confirmation_helper.cc
index 1ed7cf0b..da61622e 100644
--- a/third_party/blink/renderer/modules/payments/secure_payment_confirmation_helper.cc
+++ b/third_party/blink/renderer/modules/payments/secure_payment_confirmation_helper.cc
@@ -41,6 +41,22 @@
     return nullptr;
   }
 
+  // `challenge` is a renaming of `networkData` required when the
+  // SecurePaymentConfirmationAPIV2 flag is enabled.
+  if (RuntimeEnabledFeatures::SecurePaymentConfirmationAPIV2Enabled() &&
+      !request->hasChallenge()) {
+    exception_state.ThrowTypeError(
+        "The \"secure-payment-confirmation\" method requires a non-empty "
+        "\"challenge\" field.");
+    return nullptr;
+  } else if (!RuntimeEnabledFeatures::SecurePaymentConfirmationAPIV2Enabled() &&
+             !request->hasNetworkData()) {
+    exception_state.ThrowTypeError(
+        "The \"secure-payment-confirmation\" method requires a non-empty "
+        "\"networkData\" field.");
+    return nullptr;
+  }
+
   if (request->hasTimeout() && request->timeout() > kMaxTimeoutInMilliseconds) {
     exception_state.ThrowRangeError(
         "The \"secure-payment-confirmation\" method requires at most 1 hour "
diff --git a/third_party/blink/renderer/modules/payments/secure_payment_confirmation_request.idl b/third_party/blink/renderer/modules/payments/secure_payment_confirmation_request.idl
index 1c19484d..551fa23 100644
--- a/third_party/blink/renderer/modules/payments/secure_payment_confirmation_request.idl
+++ b/third_party/blink/renderer/modules/payments/secure_payment_confirmation_request.idl
@@ -14,6 +14,11 @@
     // Opaque data about the current transaction provided by the issuer. As the
     // issuer is the RP of the credential, `networkData` provides protection
     // against replay attacks.
-    required BufferSource networkData;
+    BufferSource networkData;
+
+    // Equivalent to `networkData`. Used when the SecurePaymentConfirmationAPIV2
+    // flag is enabled.
+    [RuntimeEnabled=SecurePaymentConfirmationAPIV2] BufferSource challenge;
+
     unsigned long timeout;
 };
diff --git a/third_party/blink/renderer/modules/payments/secure_payment_confirmation_type_converter.cc b/third_party/blink/renderer/modules/payments/secure_payment_confirmation_type_converter.cc
index e6385cc..52c04a35 100644
--- a/third_party/blink/renderer/modules/payments/secure_payment_confirmation_type_converter.cc
+++ b/third_party/blink/renderer/modules/payments/secure_payment_confirmation_type_converter.cc
@@ -51,7 +51,14 @@
   auto output = payments::mojom::blink::SecurePaymentConfirmationRequest::New();
   output->credential_ids =
       mojo::ConvertTo<Vector<Vector<uint8_t>>>(input->credentialIds());
-  output->network_data = mojo::ConvertTo<Vector<uint8_t>>(input->networkData());
+
+  // `challenge` is a renaming of `networkData` used when the
+  // SecurePaymentConfirmationAPIV2 flag is enabled.
+  if (blink::RuntimeEnabledFeatures::SecurePaymentConfirmationAPIV2Enabled()) {
+    output->challenge = mojo::ConvertTo<Vector<uint8_t>>(input->challenge());
+  } else {
+    output->challenge = mojo::ConvertTo<Vector<uint8_t>>(input->networkData());
+  }
 
   // If a timeout was not specified in JavaScript, then pass a null `timeout`
   // through mojo IPC, so the browser can set a default (e.g., 3 minutes).
diff --git a/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_impl.cc b/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_impl.cc
index 7e7572db..38c8a925 100644
--- a/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_impl.cc
+++ b/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_impl.cc
@@ -169,6 +169,7 @@
     Fullscreen::ExitFullscreen(*GetSupplementable());
 
   video_element->GetWebMediaPlayer()->OnRequestPictureInPicture();
+  DCHECK(video_element->GetWebMediaPlayer()->GetSurfaceId().has_value());
 
   session_observer_receiver_.reset();
 
@@ -187,7 +188,7 @@
   picture_in_picture_service_->StartSession(
       video_element->GetWebMediaPlayer()->GetDelegateId(),
       std::move(media_player_remote),
-      video_element->GetWebMediaPlayer()->GetSurfaceId(),
+      video_element->GetWebMediaPlayer()->GetSurfaceId().value(),
       video_element->GetWebMediaPlayer()->NaturalSize(),
       ShouldShowPlayPauseButton(*video_element), std::move(session_observer),
       WTF::Bind(&PictureInPictureControllerImpl::OnEnteredPictureInPicture,
@@ -398,6 +399,9 @@
 void PictureInPictureControllerImpl::OnPictureInPictureStateChange() {
   DCHECK(picture_in_picture_element_);
   DCHECK(picture_in_picture_element_->GetWebMediaPlayer());
+  DCHECK(picture_in_picture_element_->GetWebMediaPlayer()
+             ->GetSurfaceId()
+             .has_value());
 
   // The lifetime of the MediaPlayer mojo endpoint in the renderer is tied to
   // WebMediaPlayer, which is recreated by |picture_in_picture_element_| on
@@ -411,7 +415,7 @@
   picture_in_picture_session_->Update(
       picture_in_picture_element_->GetWebMediaPlayer()->GetDelegateId(),
       std::move(media_player_remote),
-      picture_in_picture_element_->GetWebMediaPlayer()->GetSurfaceId(),
+      picture_in_picture_element_->GetWebMediaPlayer()->GetSurfaceId().value(),
       picture_in_picture_element_->GetWebMediaPlayer()->NaturalSize(),
       ShouldShowPlayPauseButton(*picture_in_picture_element_));
 }
diff --git a/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_test.cc b/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_test.cc
index 80e3875..2da5301 100644
--- a/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_test.cc
+++ b/third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_test.cc
@@ -32,6 +32,13 @@
 
 namespace blink {
 
+viz::SurfaceId TestSurfaceId() {
+  // Use a fake but valid viz::SurfaceId.
+  return {viz::FrameSinkId(1, 1),
+          viz::LocalSurfaceId(
+              11, base::UnguessableToken::Deserialize(0x111111, 0))};
+}
+
 // The MockPictureInPictureSession implements a PictureInPicture session in the
 // same process as the test and guarantees that the callbacks are called in
 // order for the events to be fired.
@@ -47,14 +54,14 @@
   }
   ~MockPictureInPictureSession() override = default;
 
-  MOCK_METHOD1(Stop, void(StopCallback));
-  MOCK_METHOD5(
-      Update,
-      void(uint32_t,
-           mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>,
-           const absl::optional<viz::SurfaceId>&,
-           const gfx::Size&,
-           bool));
+  MOCK_METHOD(void, Stop, (StopCallback));
+  MOCK_METHOD(void,
+              Update,
+              (uint32_t,
+               mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>,
+               const viz::SurfaceId&,
+               const gfx::Size&,
+               bool));
 
  private:
   mojo::Receiver<mojom::blink::PictureInPictureSession> receiver_;
@@ -82,22 +89,23 @@
         session_remote_.InitWithNewPipeAndPassReceiver());
   }
 
-  MOCK_METHOD7(
+  MOCK_METHOD(
+      void,
       StartSession,
-      void(uint32_t,
-           mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>,
-           const absl::optional<viz::SurfaceId>&,
-           const gfx::Size&,
-           bool,
-           mojo::PendingRemote<mojom::blink::PictureInPictureSessionObserver>,
-           StartSessionCallback));
+      (uint32_t,
+       mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>,
+       const viz::SurfaceId&,
+       const gfx::Size&,
+       bool,
+       mojo::PendingRemote<mojom::blink::PictureInPictureSessionObserver>,
+       StartSessionCallback));
 
   MockPictureInPictureSession& Session() { return *session_.get(); }
 
   void StartSessionInternal(
       uint32_t,
       mojo::PendingAssociatedRemote<media::mojom::blink::MediaPlayer>,
-      const absl::optional<viz::SurfaceId>&,
+      const viz::SurfaceId&,
       const gfx::Size&,
       bool,
       mojo::PendingRemote<mojom::blink::PictureInPictureSessionObserver>,
@@ -130,24 +138,26 @@
   DISALLOW_COPY_AND_ASSIGN(PictureInPictureControllerFrameClient);
 };
 
-class PictureInPictureControllerPlayer : public EmptyWebMediaPlayer {
+class PictureInPictureControllerPlayer final : public EmptyWebMediaPlayer {
  public:
   PictureInPictureControllerPlayer() = default;
-  ~PictureInPictureControllerPlayer() final = default;
+  ~PictureInPictureControllerPlayer() override = default;
 
-  double Duration() const final {
+  double Duration() const override {
     if (infinity_duration_)
       return std::numeric_limits<double>::infinity();
     return EmptyWebMediaPlayer::Duration();
   }
-
-  ReadyState GetReadyState() const final { return kReadyStateHaveMetadata; }
-  bool HasVideo() const final { return true; }
+  ReadyState GetReadyState() const override { return kReadyStateHaveMetadata; }
+  bool HasVideo() const override { return true; }
+  void OnRequestPictureInPicture() override { surface_id_ = TestSurfaceId(); }
+  absl::optional<viz::SurfaceId> GetSurfaceId() override { return surface_id_; }
 
   void set_infinity_duration(bool value) { infinity_duration_ = value; }
 
  private:
   bool infinity_duration_ = false;
+  absl::optional<viz::SurfaceId> surface_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PictureInPictureControllerPlayer);
 };
@@ -193,7 +203,7 @@
 
  private:
   Persistent<HTMLVideoElement> video_;
-  MockPictureInPictureService mock_service_;
+  testing::NiceMock<MockPictureInPictureService> mock_service_;
   scoped_refptr<cc::Layer> layer_;
 };
 
@@ -203,7 +213,7 @@
 
   WebMediaPlayer* player = Video()->GetWebMediaPlayer();
   EXPECT_CALL(Service(),
-              StartSession(player->GetDelegateId(), _, player->GetSurfaceId(),
+              StartSession(player->GetDelegateId(), _, TestSurfaceId(),
                            player->NaturalSize(), true, _, _));
 
   PictureInPictureControllerImpl::From(GetDocument())
@@ -223,7 +233,7 @@
 
   WebMediaPlayer* player = Video()->GetWebMediaPlayer();
   EXPECT_CALL(Service(),
-              StartSession(player->GetDelegateId(), _, player->GetSurfaceId(),
+              StartSession(player->GetDelegateId(), _, TestSurfaceId(),
                            player->NaturalSize(), true, _, _));
 
   PictureInPictureControllerImpl::From(GetDocument())
@@ -251,7 +261,7 @@
 
   WebMediaPlayer* player = Video()->GetWebMediaPlayer();
   EXPECT_CALL(Service(),
-              StartSession(player->GetDelegateId(), _, player->GetSurfaceId(),
+              StartSession(player->GetDelegateId(), _, TestSurfaceId(),
                            player->NaturalSize(), true, _, _));
 
   PictureInPictureControllerImpl::From(GetDocument())
@@ -271,7 +281,7 @@
 
   WebMediaPlayer* player = Video()->GetWebMediaPlayer();
   EXPECT_CALL(Service(),
-              StartSession(player->GetDelegateId(), _, player->GetSurfaceId(),
+              StartSession(player->GetDelegateId(), _, TestSurfaceId(),
                            player->NaturalSize(), true, _, _));
 
   PictureInPictureControllerImpl::From(GetDocument())
@@ -300,7 +310,7 @@
 
   WebMediaPlayer* player = Video()->GetWebMediaPlayer();
   EXPECT_CALL(Service(),
-              StartSession(player->GetDelegateId(), _, player->GetSurfaceId(),
+              StartSession(player->GetDelegateId(), _, TestSurfaceId(),
                            player->NaturalSize(), false, _, _));
 
   PictureInPictureControllerImpl::From(GetDocument())
@@ -320,7 +330,7 @@
 
   WebMediaPlayer* player = Video()->GetWebMediaPlayer();
   EXPECT_CALL(Service(),
-              StartSession(player->GetDelegateId(), _, player->GetSurfaceId(),
+              StartSession(player->GetDelegateId(), _, TestSurfaceId(),
                            player->NaturalSize(), false, _, _));
 
   PictureInPictureControllerImpl::From(GetDocument())
diff --git a/third_party/blink/renderer/modules/webtransport/BUILD.gn b/third_party/blink/renderer/modules/webtransport/BUILD.gn
index 66edac2..00ac3084 100644
--- a/third_party/blink/renderer/modules/webtransport/BUILD.gn
+++ b/third_party/blink/renderer/modules/webtransport/BUILD.gn
@@ -8,6 +8,7 @@
   sources = [
     "bidirectional_stream.cc",
     "bidirectional_stream.h",
+    "datagram_duplex_stream.cc",
     "datagram_duplex_stream.h",
     "incoming_stream.cc",
     "incoming_stream.h",
@@ -27,6 +28,7 @@
   testonly = true
   sources = [
     "bidirectional_stream_test.cc",
+    "datagram_duplex_stream_test.cc",
     "incoming_stream_test.cc",
     "outgoing_stream_test.cc",
     "test_utils.cc",
diff --git a/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.cc b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.cc
new file mode 100644
index 0000000..a7c7e472
--- /dev/null
+++ b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.cc
@@ -0,0 +1,33 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.h"
+
+namespace blink {
+
+void DatagramDuplexStream::setIncomingMaxAge(absl::optional<double> max_age) {
+  if (!max_age.has_value() || max_age.value() > 0) {
+    incoming_max_age_ = max_age;
+  }
+}
+
+void DatagramDuplexStream::setOutgoingMaxAge(absl::optional<double> max_age) {
+  if (!max_age.has_value() || max_age.value() > 0) {
+    outgoing_max_age_ = max_age;
+  }
+}
+
+void DatagramDuplexStream::setIncomingHighWaterMark(int high_water_mark) {
+  if (high_water_mark >= 0) {
+    incoming_high_water_mark_ = high_water_mark;
+  }
+}
+
+void DatagramDuplexStream::setOutgoingHighWaterMark(int high_water_mark) {
+  if (high_water_mark >= 0) {
+    outgoing_high_water_mark_ = high_water_mark;
+  }
+}
+
+}  // namespace blink
diff --git a/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.h b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.h
index 8f659550..620d444 100644
--- a/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.h
+++ b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.h
@@ -5,6 +5,7 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBTRANSPORT_DATAGRAM_DUPLEX_STREAM_H_
 #define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBTRANSPORT_DATAGRAM_DUPLEX_STREAM_H_
 
+#include "third_party/abseil-cpp/absl/types/optional.h"
 #include "third_party/blink/renderer/modules/modules_export.h"
 #include "third_party/blink/renderer/modules/webtransport/web_transport.h"
 #include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
@@ -15,6 +16,9 @@
 class ReadableStream;
 class WritableStream;
 
+constexpr int32_t kDefaultIncomingHighWaterMark = 1;
+constexpr int32_t kDefaultOutgoingHighWaterMark = 1;
+
 class MODULES_EXPORT DatagramDuplexStream : public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
@@ -34,6 +38,18 @@
     return web_transport_->datagramWritable();
   }
 
+  absl::optional<double> incomingMaxAge() const { return incoming_max_age_; }
+  void setIncomingMaxAge(absl::optional<double> max_age);
+
+  absl::optional<double> outgoingMaxAge() const { return outgoing_max_age_; }
+  void setOutgoingMaxAge(absl::optional<double> max_age);
+
+  int32_t incomingHighWaterMark() const { return incoming_high_water_mark_; }
+  void setIncomingHighWaterMark(int32_t high_water_mark);
+
+  int32_t outgoingHighWaterMark() const { return outgoing_high_water_mark_; }
+  void setOutgoingHighWaterMark(int32_t high_water_mark);
+
   void Trace(Visitor* visitor) const override {
     visitor->Trace(web_transport_);
     ScriptWrappable::Trace(visitor);
@@ -41,6 +57,11 @@
 
  private:
   const Member<WebTransport> web_transport_;
+
+  absl::optional<double> incoming_max_age_;
+  absl::optional<double> outgoing_max_age_;
+  int32_t incoming_high_water_mark_ = kDefaultIncomingHighWaterMark;
+  int32_t outgoing_high_water_mark_ = kDefaultOutgoingHighWaterMark;
 };
 
 }  // namespace blink
diff --git a/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.idl b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.idl
index 2a3f5ec..e32300c1 100644
--- a/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.idl
+++ b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.idl
@@ -9,4 +9,9 @@
 ] interface DatagramDuplexStream {
   readonly attribute ReadableStream readable;
   readonly attribute WritableStream writable;
+
+  attribute double? incomingMaxAge;
+  attribute double? outgoingMaxAge;
+  attribute long incomingHighWaterMark;
+  attribute long outgoingHighWaterMark;
 };
diff --git a/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream_test.cc b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream_test.cc
new file mode 100644
index 0000000..14906728
--- /dev/null
+++ b/third_party/blink/renderer/modules/webtransport/datagram_duplex_stream_test.cc
@@ -0,0 +1,84 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/blink/renderer/modules/webtransport/datagram_duplex_stream.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/blink/renderer/platform/heap/heap.h"
+
+namespace blink {
+
+namespace {
+
+TEST(DatagramDuplexStreamTest, Defaults) {
+  auto* duplex = MakeGarbageCollected<DatagramDuplexStream>(nullptr);
+  EXPECT_FALSE(duplex->incomingMaxAge().has_value());
+  EXPECT_FALSE(duplex->outgoingMaxAge().has_value());
+  EXPECT_EQ(duplex->incomingHighWaterMark(), kDefaultIncomingHighWaterMark);
+  EXPECT_EQ(duplex->outgoingHighWaterMark(), kDefaultOutgoingHighWaterMark);
+}
+
+TEST(DatagramDuplexStreamTest, SetIncomingMaxAge) {
+  auto* duplex = MakeGarbageCollected<DatagramDuplexStream>(nullptr);
+
+  duplex->setIncomingMaxAge(1.0);
+  ASSERT_TRUE(duplex->incomingMaxAge().has_value());
+  EXPECT_EQ(duplex->incomingMaxAge().value(), 1.0);
+
+  duplex->setIncomingMaxAge(absl::nullopt);
+  ASSERT_FALSE(duplex->incomingMaxAge().has_value());
+
+  duplex->setIncomingMaxAge(0.0);
+  ASSERT_FALSE(duplex->incomingMaxAge().has_value());
+
+  duplex->setIncomingMaxAge(-1.0);
+  ASSERT_FALSE(duplex->incomingMaxAge().has_value());
+}
+
+TEST(DatagramDuplexStreamTest, SetOutgoingMaxAge) {
+  auto* duplex = MakeGarbageCollected<DatagramDuplexStream>(nullptr);
+
+  duplex->setOutgoingMaxAge(1.0);
+  ASSERT_TRUE(duplex->outgoingMaxAge().has_value());
+  EXPECT_EQ(duplex->outgoingMaxAge().value(), 1.0);
+
+  duplex->setOutgoingMaxAge(absl::nullopt);
+  ASSERT_FALSE(duplex->outgoingMaxAge().has_value());
+
+  duplex->setOutgoingMaxAge(0.0);
+  ASSERT_FALSE(duplex->outgoingMaxAge().has_value());
+
+  duplex->setOutgoingMaxAge(-1.0);
+  ASSERT_FALSE(duplex->outgoingMaxAge().has_value());
+}
+
+TEST(DatagramDuplexStreamTest, SetIncomingHighWaterMark) {
+  auto* duplex = MakeGarbageCollected<DatagramDuplexStream>(nullptr);
+
+  duplex->setIncomingHighWaterMark(10);
+  EXPECT_EQ(duplex->incomingHighWaterMark(), 10);
+
+  duplex->setIncomingHighWaterMark(0);
+  EXPECT_EQ(duplex->incomingHighWaterMark(), 0);
+
+  duplex->setIncomingHighWaterMark(-1);
+  EXPECT_EQ(duplex->incomingHighWaterMark(), 0);
+}
+
+TEST(DatagramDuplexStreamTest, SetOutgoingHighWaterMark) {
+  auto* duplex = MakeGarbageCollected<DatagramDuplexStream>(nullptr);
+
+  duplex->setOutgoingHighWaterMark(10);
+  EXPECT_EQ(duplex->outgoingHighWaterMark(), 10);
+
+  duplex->setOutgoingHighWaterMark(0);
+  EXPECT_EQ(duplex->outgoingHighWaterMark(), 0);
+
+  duplex->setOutgoingHighWaterMark(-1);
+  EXPECT_EQ(duplex->outgoingHighWaterMark(), 0);
+}
+
+}  // namespace
+
+}  // namespace blink
diff --git a/third_party/blink/renderer/platform/BUILD.gn b/third_party/blink/renderer/platform/BUILD.gn
index 5f62d99..c5fbe15c 100644
--- a/third_party/blink/renderer/platform/BUILD.gn
+++ b/third_party/blink/renderer/platform/BUILD.gn
@@ -2171,7 +2171,6 @@
     "text/platform_locale_test.cc",
     "text/segmented_string_test.cc",
     "text/suffix_tree_test.cc",
-    "text/text_boundaries_test.cc",
     "text/text_break_iterator_test.cc",
     "text/text_encoding_detector_test.cc",
     "text/text_run_test.cc",
diff --git a/third_party/blink/renderer/platform/fonts/opentype/variable_axes_names.cc b/third_party/blink/renderer/platform/fonts/opentype/variable_axes_names.cc
index e237bdd..a5d79f4 100644
--- a/third_party/blink/renderer/platform/fonts/opentype/variable_axes_names.cc
+++ b/third_party/blink/renderer/platform/fonts/opentype/variable_axes_names.cc
@@ -52,9 +52,9 @@
       axis.name = String(buffer.get());
     }
 
-    std::array<char, 4> tag = {HB_UNTAG(axes[i].tag)};
+    std::array<uint8_t, 4> tag = {HB_UNTAG(axes[i].tag)};
 
-    axis.tag = String(tag.data(), tag.size());
+    axis.tag = String(reinterpret_cast<const char*>(tag.data()), tag.size());
     axis.minValue = axes[i].min_value;
     axis.maxValue = axes[i].max_value;
     axis.defaultValue = axes[i].default_value;
diff --git a/third_party/blink/renderer/platform/graphics/bitmap_image.cc b/third_party/blink/renderer/platform/graphics/bitmap_image.cc
index 1e810d0..156f395 100644
--- a/third_party/blink/renderer/platform/graphics/bitmap_image.cc
+++ b/third_party/blink/renderer/platform/graphics/bitmap_image.cc
@@ -417,12 +417,6 @@
                   : ImageOrientationEnum::kDefault;
 }
 
-IntSize BitmapImage::CurrentFrameDensityCorrectedSize() const {
-  return decoder_ ? decoder_->DensityCorrectedSizeAtIndex(
-                        PaintImage::kDefaultFrameIndex)
-                  : IntSize();
-}
-
 int BitmapImage::RepetitionCount() {
   if ((repetition_count_status_ == kUnknown) ||
       ((repetition_count_status_ == kUncertain) && all_data_received_)) {
diff --git a/third_party/blink/renderer/platform/graphics/bitmap_image.h b/third_party/blink/renderer/platform/graphics/bitmap_image.h
index 14322e9..b0ed9f8 100644
--- a/third_party/blink/renderer/platform/graphics/bitmap_image.h
+++ b/third_party/blink/renderer/platform/graphics/bitmap_image.h
@@ -96,7 +96,6 @@
   size_t FrameCount() override;
   PaintImage PaintImageForCurrentFrame() override;
   ImageOrientation CurrentFrameOrientation() const override;
-  IntSize CurrentFrameDensityCorrectedSize() const override;
 
   PaintImage PaintImageForTesting();
   void AdvanceAnimationForTesting() override {
diff --git a/third_party/blink/renderer/platform/graphics/image.h b/third_party/blink/renderer/platform/graphics/image.h
index b37040002..3b8a9e6 100644
--- a/third_party/blink/renderer/platform/graphics/image.h
+++ b/third_party/blink/renderer/platform/graphics/image.h
@@ -229,8 +229,6 @@
     return ImageOrientationEnum::kDefault;
   }
 
-  virtual IntSize CurrentFrameDensityCorrectedSize() const { return IntSize(); }
-
   // Correct the src rect (rotate and maybe translate it) to account for a
   // non-default image orientation. The image must have non-default orientation
   // to call this method. The image_size is the oriented size of the image (i.e.
diff --git a/third_party/blink/renderer/platform/image-decoders/image_decoder_test.cc b/third_party/blink/renderer/platform/image-decoders/image_decoder_test.cc
index 9e20b13..19c27953 100644
--- a/third_party/blink/renderer/platform/image-decoders/image_decoder_test.cc
+++ b/third_party/blink/renderer/platform/image-decoders/image_decoder_test.cc
@@ -364,7 +364,7 @@
   // Chimera-AV1-10bit-1280x720-2380kbps-100.avif. Since the major_brand is
   // not "avif" or "avis", we must parse the compatible_brands to determine if
   // this is an AVIF image.
-  constexpr char kData[] = {
+  constexpr uint8_t kData[] = {
       // A File Type Box.
       0x00, 0x00, 0x00, 0x1c,  // unsigned int(32) size; 0x1c = 28
       'f', 't', 'y', 'p',      // unsigned int(32) type = boxtype;
diff --git a/third_party/blink/renderer/platform/mediastream/media_stream_component.cc b/third_party/blink/renderer/platform/mediastream/media_stream_component.cc
index bbfa611c..c956282 100644
--- a/third_party/blink/renderer/platform/mediastream/media_stream_component.cc
+++ b/third_party/blink/renderer/platform/mediastream/media_stream_component.cc
@@ -85,6 +85,12 @@
   platform_track_->GetSettings(settings);
 }
 
+MediaStreamTrackPlatform::CaptureHandle
+MediaStreamComponent::GetCaptureHandle() {
+  DCHECK(platform_track_);
+  return platform_track_->GetCaptureHandle();
+}
+
 void MediaStreamComponent::SetContentHint(
     WebMediaStreamTrack::ContentHintType hint) {
   switch (hint) {
diff --git a/third_party/blink/renderer/platform/mediastream/media_stream_component.h b/third_party/blink/renderer/platform/mediastream/media_stream_component.h
index 81f8b50..6138a1cf 100644
--- a/third_party/blink/renderer/platform/mediastream/media_stream_component.h
+++ b/third_party/blink/renderer/platform/mediastream/media_stream_component.h
@@ -102,6 +102,7 @@
     platform_track_ = std::move(platform_track);
   }
   void GetSettings(MediaStreamTrackPlatform::Settings&);
+  MediaStreamTrackPlatform::CaptureHandle GetCaptureHandle();
 
   String ToString() const;
 
diff --git a/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.cc b/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.cc
index 659d0138..726ea44c 100644
--- a/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.cc
+++ b/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.cc
@@ -22,4 +22,9 @@
 
 MediaStreamTrackPlatform::~MediaStreamTrackPlatform() {}
 
+MediaStreamTrackPlatform::CaptureHandle
+MediaStreamTrackPlatform::GetCaptureHandle() {
+  return MediaStreamTrackPlatform::CaptureHandle();
+}
+
 }  // namespace blink
diff --git a/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.h b/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.h
index 6d9c8c7..6361ab2 100644
--- a/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.h
+++ b/third_party/blink/renderer/platform/mediastream/media_stream_track_platform.h
@@ -19,11 +19,6 @@
  public:
   enum class FacingMode { kNone, kUser, kEnvironment, kLeft, kRight };
 
-  struct CaptureHandle {
-    String origin;
-    String handle;
-  };
-
   struct Settings {
     bool HasFrameRate() const { return frame_rate >= 0.0; }
     bool HasWidth() const { return width >= 0; }
@@ -61,7 +56,13 @@
     absl::optional<media::mojom::DisplayCaptureSurfaceType> display_surface;
     absl::optional<bool> logical_surface;
     absl::optional<media::mojom::CursorCaptureType> cursor;
-    absl::optional<CaptureHandle> capture_handle;
+  };
+
+  struct CaptureHandle {
+    bool IsEmpty() const { return origin.IsEmpty() && handle.IsEmpty(); }
+
+    String origin;
+    String handle;
   };
 
   explicit MediaStreamTrackPlatform(bool is_local_track);
@@ -81,6 +82,7 @@
 
   // TODO(hta): Make method pure virtual when all tracks have the method.
   virtual void GetSettings(Settings& settings) {}
+  virtual CaptureHandle GetCaptureHandle();
 
   bool is_local_track() const { return is_local_track_; }
 
diff --git a/third_party/blink/renderer/platform/text/text_boundaries.cc b/third_party/blink/renderer/platform/text/text_boundaries.cc
index 9bb388a7..855ee0f 100644
--- a/third_party/blink/renderer/platform/text/text_boundaries.cc
+++ b/third_party/blink/renderer/platform/text/text_boundaries.cc
@@ -32,28 +32,6 @@
 
 namespace blink {
 
-int EndOfFirstWordBoundaryContext(const UChar* characters, int length) {
-  for (int i = 0; i < length;) {
-    int first = i;
-    UChar32 ch;
-    U16_NEXT(characters, i, length, ch);
-    if (!RequiresContextForWordBoundary(ch))
-      return first;
-  }
-  return length;
-}
-
-int StartOfLastWordBoundaryContext(const UChar* characters, int length) {
-  for (int i = length; i > 0;) {
-    int last = i;
-    UChar32 ch;
-    U16_PREV(characters, 0, i, ch);
-    if (!RequiresContextForWordBoundary(ch))
-      return last;
-  }
-  return 0;
-}
-
 int FindNextWordForward(const UChar* chars, int len, int position) {
   TextBreakIterator* it = WordBreakIterator({chars, len});
 
@@ -68,7 +46,7 @@
     position = it->following(position);
   }
 
-    return len;
+  return len;
 }
 
 int FindNextWordBackward(const UChar* chars, int len, int position) {
@@ -88,38 +66,6 @@
   return 0;
 }
 
-std::pair<int, int> FindWordBackward(const UChar* chars,
-                                     int len,
-                                     int position) {
-  DCHECK_GE(len, 0);
-  DCHECK_LE(position, len);
-  if (len == 0)
-    return {0, 0};
-  TextBreakIterator* it = WordBreakIterator({chars, len});
-  const int start = it->preceding(position);
-  const int end = it->next();
-  if (start < 0) {
-    // There are no words at |position|.
-    return {0, 0};
-  }
-  return {start, end};
-}
-
-std::pair<int, int> FindWordForward(const UChar* chars, int len, int position) {
-  DCHECK_GE(len, 0);
-  DCHECK_LE(position, len);
-  if (len == 0)
-    return {0, 0};
-  TextBreakIterator* it = WordBreakIterator({chars, len});
-  const int end = it->following(position);
-  const int start = it->previous();
-  if (end < 0) {
-    // There are no words at |position|.
-    return {len, len};
-  }
-  return {start, end};
-}
-
 int FindWordStartBoundary(const UChar* chars, int len, int position) {
   TextBreakIterator* it = WordBreakIterator({chars, len});
   it->following(position);
diff --git a/third_party/blink/renderer/platform/text/text_boundaries.h b/third_party/blink/renderer/platform/text/text_boundaries.h
index b1fae5eb..020ead53 100644
--- a/third_party/blink/renderer/platform/text/text_boundaries.h
+++ b/third_party/blink/renderer/platform/text/text_boundaries.h
@@ -26,30 +26,13 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TEXT_BOUNDARIES_H_
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TEXT_BOUNDARIES_H_
 
-#include <utility>
-
 #include "third_party/blink/renderer/platform/platform_export.h"
 #include "third_party/blink/renderer/platform/wtf/text/unicode.h"
 
 namespace blink {
 
-inline bool RequiresContextForWordBoundary(UChar32 ch) {
-  return WTF::unicode::HasLineBreakingPropertyComplexContext(ch);
-}
-
-PLATFORM_EXPORT int EndOfFirstWordBoundaryContext(const UChar* characters,
-                                                  int length);
-PLATFORM_EXPORT int StartOfLastWordBoundaryContext(const UChar* characters,
-                                                   int length);
-
 // |UChar*| should be a string in logical order instead of visual order, since
 // |FindWordBoundary()| uses ICU, which works on logical order strings
-PLATFORM_EXPORT std::pair<int, int> FindWordBackward(const UChar*,
-                                                     int len,
-                                                     int position);
-PLATFORM_EXPORT std::pair<int, int> FindWordForward(const UChar*,
-                                                    int len,
-                                                    int position);
 PLATFORM_EXPORT int FindWordStartBoundary(const UChar*, int len, int position);
 PLATFORM_EXPORT int FindWordEndBoundary(const UChar*, int len, int position);
 PLATFORM_EXPORT int FindNextWordBackward(const UChar*, int len, int position);
diff --git a/third_party/blink/renderer/platform/text/text_boundaries_test.cc b/third_party/blink/renderer/platform/text/text_boundaries_test.cc
deleted file mode 100644
index 82fca82..0000000
--- a/third_party/blink/renderer/platform/text/text_boundaries_test.cc
+++ /dev/null
@@ -1,175 +0,0 @@
-// Copyright 2017 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include <string>
-
-#include "third_party/blink/renderer/platform/text/text_boundaries.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
-#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
-
-namespace blink {
-
-class TextBoundariesTest : public testing::Test {};
-
-namespace {
-
-std::pair<String, int> ParsePositionMarker(const std::string input8) {
-  String input16 = String::FromUTF8(input8.data(), input8.size());
-  input16.Ensure16Bit();
-  const size_t position = input16.find('|');
-  DCHECK(position != kNotFound) << input8 << " should have position marker(|).";
-  String output = input16.Left(position) + input16.Substring(position + 1);
-  output.Ensure16Bit();
-  return {output, position};
-}
-
-std::string MakeResultText(const String& text, int start, int end) {
-  StringBuilder builder;
-  if (start < 0 && end < 0) {
-    builder.Append(text);
-  } else if (start < 0) {
-    builder.Append(text.Left(end));
-    builder.Append('^');
-    builder.Append(text.Substring(end));
-  } else if (end < 0) {
-    builder.Append(text.Left(start));
-    builder.Append('|');
-    builder.Append(text.Substring(start));
-  } else {
-    builder.Append(text.Left(start));
-    builder.Append('^');
-    builder.Append(text.Substring(start, end - start));
-    builder.Append('|');
-  }
-  builder.Append(text.Substring(end));
-  return builder.ToString().Utf8();
-}
-
-// Returns word boundray with start(^) and end(|) markes from text with
-// position(|) marker.
-std::string TryFindWordBackward(const std::string input8) {
-  std::pair<String, int> string_and_offset = ParsePositionMarker(input8);
-  const String text16 = string_and_offset.first;
-  const int position = string_and_offset.second;
-  std::pair<int, int> start_and_end =
-      FindWordBackward(text16.Characters16(), text16.length(), position);
-  return MakeResultText(text16, start_and_end.first, start_and_end.second);
-}
-
-// Returns word boundray with start(^) and end(|) markes from text with
-// position(|) marker.
-std::string TryFindWordForward(const std::string input8) {
-  std::pair<String, int> string_and_offset = ParsePositionMarker(input8);
-  const String text16 = string_and_offset.first;
-  const int position = string_and_offset.second;
-  std::pair<int, int> start_and_end =
-      FindWordForward(text16.Characters16(), text16.length(), position);
-  return MakeResultText(text16, start_and_end.first, start_and_end.second);
-}
-
-}  // namespace
-
-TEST_F(TextBoundariesTest, BackwardBasic) {
-  EXPECT_EQ("^|abc def", TryFindWordBackward("|abc def"));
-  EXPECT_EQ("^abc| def", TryFindWordBackward("a|bc def"));
-  EXPECT_EQ("^abc| def", TryFindWordBackward("ab|c def"));
-  EXPECT_EQ("^abc| def", TryFindWordBackward("abc| def"));
-  EXPECT_EQ("abc^ |def", TryFindWordBackward("abc |def"));
-  EXPECT_EQ("abc ^def|", TryFindWordBackward("abc d|ef"));
-  EXPECT_EQ("abc ^def|", TryFindWordBackward("abc de|f"));
-  EXPECT_EQ("abc ^def|", TryFindWordBackward("abc def|"));
-}
-
-TEST_F(TextBoundariesTest, ForwardBasic) {
-  EXPECT_EQ("^abc| def", TryFindWordForward("|abc def"));
-  EXPECT_EQ("^abc| def", TryFindWordForward("a|bc def"));
-  EXPECT_EQ("^abc| def", TryFindWordForward("ab|c def"));
-  EXPECT_EQ("abc^ |def", TryFindWordForward("abc| def"));
-  EXPECT_EQ("abc ^def|", TryFindWordForward("abc |def"));
-  EXPECT_EQ("abc ^def|", TryFindWordForward("abc d|ef"));
-  EXPECT_EQ("abc ^def|", TryFindWordForward("abc de|f"));
-  EXPECT_EQ("abc def^|", TryFindWordForward("abc def|"));
-}
-
-TEST_F(TextBoundariesTest, ForwardBiDi) {
-  EXPECT_EQ(u8"^\u0620\u0621\u0622| \u0623\u0624\u0625",
-            TryFindWordForward(u8"|\u0620\u0621\u0622 \u0623\u0624\u0625"));
-  EXPECT_EQ(u8"^\u0620\u0621\u0622| \u0623\u0624\u0625",
-            TryFindWordForward(u8"\u0620|\u0621\u0622 \u0623\u0624\u0625"));
-  EXPECT_EQ(u8"^\u0620\u0621\u0622| \u0623\u0624\u0625",
-            TryFindWordForward(u8"\u0620\u0621|\u0622 \u0623\u0624\u0625"));
-  EXPECT_EQ(u8"\u0620\u0621\u0622^ |\u0623\u0624\u0625",
-            TryFindWordForward(u8"\u0620\u0621\u0622| \u0623\u0624\u0625"));
-  EXPECT_EQ(u8"\u0620\u0621\u0622 ^\u0623\u0624\u0625|",
-            TryFindWordForward(u8"\u0620\u0621\u0622 |\u0623\u0624\u0625"));
-  EXPECT_EQ(u8"\u0620\u0621\u0622 \u0623\u0624\u0625^|",
-            TryFindWordForward(u8"\u0620\u0621\u0622 \u0623\u0624\u0625|"));
-}
-
-TEST_F(TextBoundariesTest, ForwardBiDiMixed) {
-  EXPECT_EQ(u8"^abc\u0620\u0621\u0622|",
-            TryFindWordForward(u8"|abc\u0620\u0621\u0622"));
-  EXPECT_EQ(u8"^abc\u0620\u0621\u0622|",
-            TryFindWordForward(u8"ab|c\u0620\u0621\u0622"));
-  EXPECT_EQ(u8"^abc\u0620\u0621\u0622|",
-            TryFindWordForward(u8"abc|\u0620\u0621\u0622"))
-      << "At L1/L2 boundary";
-  EXPECT_EQ(u8"^abc\u0620\u0621\u0622|",
-            TryFindWordForward(u8"abc\u0620|\u0621\u0622"));
-
-  EXPECT_EQ(u8"^\u0620\u0621\u0622xyz|",
-            TryFindWordForward(u8"|\u0620\u0621\u0622xyz"));
-  EXPECT_EQ(u8"^\u0620\u0621\u0622xyz|",
-            TryFindWordForward(u8"\u0620|\u0621\u0622xyz"));
-  EXPECT_EQ(u8"^\u0620\u0621\u0622xyz|",
-            TryFindWordForward(u8"\u0620\u0621\u0622|xyz"))
-      << "At L2/L1 boundary";
-  EXPECT_EQ(u8"^\u0620\u0621\u0622xyz|",
-            TryFindWordForward(u8"\u0620\u0621\u0622xy|z"));
-}
-
-TEST_F(TextBoundariesTest, ForwardOne) {
-  EXPECT_EQ("^a|", TryFindWordForward("|a"));
-  EXPECT_EQ("a^|", TryFindWordForward("a|")) << "No word after |";
-}
-
-TEST_F(TextBoundariesTest, ForwardParenthesis) {
-  EXPECT_EQ("^(|abc)", TryFindWordForward("|(abc)"));
-  EXPECT_EQ("(^abc|)", TryFindWordForward("(|abc)"));
-  EXPECT_EQ("(^abc|)", TryFindWordForward("(a|bc)"));
-  EXPECT_EQ("(^abc|)", TryFindWordForward("(ab|c)"));
-  EXPECT_EQ("(abc)^|", TryFindWordForward("(abc)|")) << "No word after |";
-}
-
-TEST_F(TextBoundariesTest, ForwardPunctuations) {
-  EXPECT_EQ("^abc|,,", TryFindWordForward("|abc,,"));
-  EXPECT_EQ("abc^,|,", TryFindWordForward("abc|,,"));
-}
-
-// A sequence of whitespaces is treated as a single word.
-// See http://unicode.org/reports/tr29/#WB3d .
-TEST_F(TextBoundariesTest, ForwardWhitespaces) {
-  EXPECT_EQ("^  |abc  def  ", TryFindWordForward("|  abc  def  "));
-  EXPECT_EQ("^  |abc  def  ", TryFindWordForward(" | abc  def  "));
-  EXPECT_EQ("  ^abc|  def  ", TryFindWordForward("  |abc  def  "));
-  EXPECT_EQ("  ^abc|  def  ", TryFindWordForward("  a|bc  def  "));
-  EXPECT_EQ("  ^abc|  def  ", TryFindWordForward("  ab|c  def  "));
-  EXPECT_EQ("  abc^  |def  ", TryFindWordForward("  abc|  def  "));
-  EXPECT_EQ("  abc^  |def  ", TryFindWordForward("  abc | def  "));
-  EXPECT_EQ("  abc  ^def|  ", TryFindWordForward("  abc  |def  "));
-  EXPECT_EQ("  abc  ^def|  ", TryFindWordForward("  abc  d|ef  "));
-  EXPECT_EQ("  abc  ^def|  ", TryFindWordForward("  abc  de|f  "));
-  EXPECT_EQ("  abc  def^  |", TryFindWordForward("  abc  def|  "));
-  EXPECT_EQ("  abc  def^  |", TryFindWordForward("  abc  def | "));
-  EXPECT_EQ("  abc  def  ^|", TryFindWordForward("  abc  def  |"))
-      << "No word after |";
-}
-
-TEST_F(TextBoundariesTest, ForwardZero) {
-  EXPECT_EQ("^|", TryFindWordForward("|"));
-}
-
-}  // namespace blink
diff --git a/third_party/blink/renderer/platform/wtf/shared_buffer.h b/third_party/blink/renderer/platform/wtf/shared_buffer.h
index 1111c52..7b04c72 100644
--- a/third_party/blink/renderer/platform/wtf/shared_buffer.h
+++ b/third_party/blink/renderer/platform/wtf/shared_buffer.h
@@ -139,6 +139,11 @@
     ALLOW_NUMERIC_ARG_TYPES_PROMOTABLE_TO(size_t);
     AppendInternal(data, size);
   }
+  HAS_STRICTLY_TYPED_ARG
+  void Append(const unsigned char* data, STRICTLY_TYPED_ARG(size)) {
+    ALLOW_NUMERIC_ARG_TYPES_PROMOTABLE_TO(size_t);
+    AppendInternal(reinterpret_cast<const char*>(data), size);
+  }
   void Append(const Vector<char>& data) { Append(data.data(), data.size()); }
 
   void Clear();
diff --git a/third_party/blink/web_tests/TestExpectations b/third_party/blink/web_tests/TestExpectations
index 859f0f2..5bd1557 100644
--- a/third_party/blink/web_tests/TestExpectations
+++ b/third_party/blink/web_tests/TestExpectations
@@ -1763,6 +1763,12 @@
 # By about a quarter or less of a pixel.
 crbug.com/997202 [ Mac ] virtual/text-antialias/international/bdo-bidi-width.html [ Failure ]
 
+# crbug.com/1218726 These tests fail when VerifyHTMLFetchedFromAppCacheBeforeDelay is enabled.
+crbug.com/1218726 http/tests/loading/appcache-delay/link_header_preload_on_commit.php [ Failure ]
+crbug.com/1218726 http/tests/loading/appcache-delay/preload-does-not-jump-the-queue.html [ Failure ]
+crbug.com/1218726 http/tests/mixed-autoupgrade/optionally/image-upgrade-console-message.https.html [ Failure ]
+crbug.com/1218726 http/tests/security/deprecated-subresource-requests.html [ Failure ]
+
 crbug.com/574283 [ Mac ] fast/scroll-behavior/smooth-scroll/ongoing-smooth-scroll-anchors.html [ Skip ]
 crbug.com/574283 [ Mac ] virtual/threaded-prefer-compositing/fast/scroll-behavior/smooth-scroll/fixed-background-in-iframe.html [ Skip ]
 crbug.com/574283 virtual/threaded-prefer-compositing/fast/scroll-behavior/smooth-scroll/main-thread-scrolling-reason-correctness.html [ Skip ]
@@ -2505,11 +2511,14 @@
 crbug.com/958381 [ Mac ] external/wpt/css/CSS2/tables/table-anonymous-objects-206.xht [ Failure ]
 
 # ====== New tests from wpt-importer added here ======
+crbug.com/626703 [ Mac11.0 ] virtual/no-auto-wpt-origin-isolation/external/wpt/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yeswithparams-subdomain.sub.https.html [ Failure Timeout ]
+crbug.com/626703 [ Mac11.0 ] virtual/webrtc-wpt-plan-b/external/wpt/webrtc/RTCPeerConnection-mandatory-getStats.https.html [ Failure Timeout ]
+crbug.com/626703 [ Mac11.0 ] external/wpt/webrtc/RTCPeerConnection-mandatory-getStats.https.html [ Failure Timeout ]
+crbug.com/626703 [ Mac11.0 ] virtual/no-auto-wpt-origin-isolation/external/wpt/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html [ Failure Timeout ]
 crbug.com/626703 [ Mac11.0 ] virtual/no-auto-wpt-origin-isolation/external/wpt/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-same.sub.https.html [ Failure Timeout ]
 crbug.com/626703 [ Mac11.0 ] virtual/no-auto-wpt-origin-isolation/external/wpt/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html [ Failure Timeout ]
 crbug.com/626703 external/wpt/fetch/api/request/request-bad-port.any.worker.html [ Timeout ]
 crbug.com/626703 virtual/plz-dedicated-worker/external/wpt/fetch/api/request/request-bad-port.any.worker.html [ Timeout ]
-crbug.com/626703 [ Win ] external/wpt/websockets/Create-blocked-port.any.html?wpt_flags=h2 [ Failure Timeout ]
 crbug.com/626703 external/wpt/fetch/api/request/request-bad-port.any.sharedworker.html [ Timeout ]
 crbug.com/626703 [ Win ] external/wpt/websockets/Create-blocked-port.any.worker.html?wpt_flags=h2 [ Failure Timeout ]
 crbug.com/626703 virtual/plz-dedicated-worker/external/wpt/fetch/api/request/request-bad-port.any.sharedworker.html [ Timeout ]
@@ -2863,7 +2872,6 @@
 crbug.com/626703 [ Mac11.0 ] virtual/transform-interop/external/wpt/css/css-transforms/parsing/rotate-parsing-valid.html [ Failure Crash ]
 crbug.com/626703 external/wpt/focus/focus-already-focused-iframe-deep-different-site.html [ Timeout ]
 crbug.com/626703 [ Mac11.0 ] external/wpt/content-security-policy/securitypolicyviolation/source-file-data-scheme.html [ Failure Timeout ]
-crbug.com/626703 [ Mac11.0 ] external/wpt/websockets/Create-blocked-port.any.html?wpt_flags=h2 [ Failure Timeout ]
 crbug.com/626703 [ Mac11.0 ] external/wpt/websockets/Create-protocols-repeated-case-insensitive.any.html?wss [ Failure Timeout ]
 crbug.com/626703 [ Mac11.0 ] external/wpt/websockets/basic-auth.any.worker.html?wpt_flags=h2 [ Failure Timeout ]
 crbug.com/626703 [ Mac11.0 ] external/wpt/websockets/stream/tentative/backpressure-send.any.serviceworker.html?wpt_flags=h2 [ Failure Timeout ]
@@ -6900,3 +6908,7 @@
 # Sheriff 2021-06-11
 crbug.com/1218667 [ Win ] virtual/portals/wpt_internal/portals/portals-dangling-markup.sub.html [ Pass Timeout ]
 crbug.com/1218714 [ Win ] virtual/scroll-unification/fast/forms/select-popup/popup-menu-scrollbar-button-scrolls.html [ Pass Timeout ]
+
+# Sheriff 2021-06-14
+crbug.com/1219499 external/wpt/websockets/Create-blocked-port.any.html?wpt_flags=h2 [ Pass Failure Timeout ]
+crbug.com/1219499 [ Win ] external/wpt/websockets/Create-blocked-port.any.html?wss [ Pass Timeout ]
diff --git a/third_party/blink/web_tests/external/WPT_BASE_MANIFEST_8.json b/third_party/blink/web_tests/external/WPT_BASE_MANIFEST_8.json
index f4b92657..7a6eded 100644
--- a/third_party/blink/web_tests/external/WPT_BASE_MANIFEST_8.json
+++ b/third_party/blink/web_tests/external/WPT_BASE_MANIFEST_8.json
@@ -278151,7 +278151,7 @@
    },
    "mathml": {
     "META.yml": [
-     "5aea9088d744bfa835ca91217c9a6d9f60253e3e",
+     "ee5c81bfb6ae6c31277a801f53184af723fcf967",
      []
     ],
     "README.md": [
@@ -432143,7 +432143,7 @@
      ]
     ],
     "MediaStreamTrackProcessor-video.https.html": [
-     "5fe4e044e859f7c8ecf7f916bbd4d0efee03ba60",
+     "7cc87c7383461ee7aeb1fa9d56aef0f1564345b2",
      [
       null,
       {}
diff --git a/third_party/blink/web_tests/external/wpt/css/css-writing-modes/crashtests/wm-body-propagation-crash.html b/third_party/blink/web_tests/external/wpt/css/css-writing-modes/crashtests/wm-body-propagation-crash.html
new file mode 100644
index 0000000..a4a2471
--- /dev/null
+++ b/third_party/blink/web_tests/external/wpt/css/css-writing-modes/crashtests/wm-body-propagation-crash.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<title>Chrome DCHECK failure for non-root &lt;html&gt;</title>
+<link rel="help" href="https://crbug.com/1217946">
+<body></body>
+<script>
+  let non_root = document.createElement("html");
+  document.documentElement.appendChild(non_root);
+  document.body.offsetTop;
+  document.body.style.display = "inline";
+  non_root.style.color = "red";
+</script>
diff --git a/third_party/blink/web_tests/external/wpt/mathml/META.yml b/third_party/blink/web_tests/external/wpt/mathml/META.yml
index 5aea908..ee5c81b 100644
--- a/third_party/blink/web_tests/external/wpt/mathml/META.yml
+++ b/third_party/blink/web_tests/external/wpt/mathml/META.yml
@@ -1,3 +1,3 @@
-spec: https://mathml-refresh.github.io/mathml-core/
+spec: https://w3c.github.io/mathml-core/
 suggested_reviewers:
   - fred-wang
diff --git a/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info-expected.txt b/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info-expected.txt
index 91577ec..da1a532 100644
--- a/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info-expected.txt
+++ b/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info-expected.txt
@@ -1,6 +1,6 @@
 Verifies that we can successfully retrieve frame info from frame tree.
-{
-    adFrameType : none
+Frame: {
+    adFrameStatus : <object>
     crossOriginIsolatedContextType : Isolated
     domainAndRegistry : oopif.test
     gatedAPIFeatures : [
diff --git a/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info.js b/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info.js
index 7fe052f0..3d2fd13 100644
--- a/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info.js
+++ b/third_party/blink/web_tests/http/tests/inspector-protocol/network/cross-origin-isolation/cross-origin-isolation-frame-info.js
@@ -8,6 +8,8 @@
 
   await dp.Page.enable();
   const response = await dp.Page.getResourceTree();
-  testRunner.log(response.result.frameTree.frame);
+  testRunner.log(
+      response.result.frameTree.frame, `Frame: `,
+      [`adFrameStatus`, `id`, `loaderId`]);
   testRunner.completeTest();
 });
diff --git a/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad-expected.txt b/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad-expected.txt
index c15266b..2149bc78 100644
--- a/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad-expected.txt
+++ b/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad-expected.txt
@@ -1,6 +1,11 @@
 Tests that the ad frame type is reported on navigation
 
 {
-    adFrameType : root
+    adFrameStatus : {
+        adFrameType : root
+        explanations : [
+            [0] : CreatedByAdScript
+        ]
+    }
 }
 
diff --git a/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad.js b/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad.js
index 0c8658c..de93bfd 100644
--- a/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad.js
+++ b/third_party/blink/web_tests/http/tests/inspector-protocol/page/navigated-heavy-ad.js
@@ -19,6 +19,6 @@
   // So, we wait for the second navigation before logging the adFrameType.
   await dp.Page.onceFrameNavigated();
   const { params } = await dp.Page.onceFrameNavigated();
-  testRunner.log({ adFrameType: params.frame.adFrameType });
+  testRunner.log({adFrameStatus: params.frame.adFrameStatus});
   testRunner.completeTest();
 })
diff --git a/third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt b/third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt
index 3164176..95e5cbcb 100644
--- a/third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt
+++ b/third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt
@@ -406,9 +406,17 @@
     method item
 interface DatagramDuplexStream
     attribute @@toStringTag
+    getter incomingHighWaterMark
+    getter incomingMaxAge
+    getter outgoingHighWaterMark
+    getter outgoingMaxAge
     getter readable
     getter writable
     method constructor
+    setter incomingHighWaterMark
+    setter incomingMaxAge
+    setter outgoingHighWaterMark
+    setter outgoingMaxAge
 interface DecompressionStream
     attribute @@toStringTag
     getter readable
diff --git a/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt b/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt
index 0f9e86f..64af6b6b 100644
--- a/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt
+++ b/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt
@@ -385,9 +385,17 @@
 [Worker]     method item
 [Worker] interface DatagramDuplexStream
 [Worker]     attribute @@toStringTag
+[Worker]     getter incomingHighWaterMark
+[Worker]     getter incomingMaxAge
+[Worker]     getter outgoingHighWaterMark
+[Worker]     getter outgoingMaxAge
 [Worker]     getter readable
 [Worker]     getter writable
 [Worker]     method constructor
+[Worker]     setter incomingHighWaterMark
+[Worker]     setter incomingMaxAge
+[Worker]     setter outgoingHighWaterMark
+[Worker]     setter outgoingMaxAge
 [Worker] interface DecompressionStream
 [Worker]     attribute @@toStringTag
 [Worker]     getter readable
diff --git a/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt b/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt
index 098e42c..e37f7303 100644
--- a/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt
+++ b/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt
@@ -1657,9 +1657,17 @@
     method remove
 interface DatagramDuplexStream
     attribute @@toStringTag
+    getter incomingHighWaterMark
+    getter incomingMaxAge
+    getter outgoingHighWaterMark
+    getter outgoingMaxAge
     getter readable
     getter writable
     method constructor
+    setter incomingHighWaterMark
+    setter incomingMaxAge
+    setter outgoingHighWaterMark
+    setter outgoingMaxAge
 interface DecompressionStream
     attribute @@toStringTag
     getter readable
diff --git a/third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt b/third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt
index 615d71a..8444c50b 100644
--- a/third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt
+++ b/third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt
@@ -356,9 +356,17 @@
 [Worker]     method item
 [Worker] interface DatagramDuplexStream
 [Worker]     attribute @@toStringTag
+[Worker]     getter incomingHighWaterMark
+[Worker]     getter incomingMaxAge
+[Worker]     getter outgoingHighWaterMark
+[Worker]     getter outgoingMaxAge
 [Worker]     getter readable
 [Worker]     getter writable
 [Worker]     method constructor
+[Worker]     setter incomingHighWaterMark
+[Worker]     setter incomingMaxAge
+[Worker]     setter outgoingHighWaterMark
+[Worker]     setter outgoingMaxAge
 [Worker] interface DecompressionStream
 [Worker]     attribute @@toStringTag
 [Worker]     getter readable
diff --git a/third_party/freetype/README.chromium b/third_party/freetype/README.chromium
index 19461c4e..7f19892 100644
--- a/third_party/freetype/README.chromium
+++ b/third_party/freetype/README.chromium
@@ -1,7 +1,7 @@
 Name: FreeType
 URL: http://www.freetype.org/
-Version: VER-2-10-4-274-g7833e308e
-Revision: 7833e308efec8caf5ce62855e9b27041ad2155ad
+Version: VER-2-10-4-278-g8336d53cf
+Revision: 8336d53cff9f78bb48f1ba4aa670c1d8d81d1808
 CPEPrefix: cpe:/a:freetype:freetype:2.10.4
 License: Custom license "inspired by the BSD, Artistic, and IJG (Independent
          JPEG Group) licenses"
diff --git a/third_party/zxcvbn-cpp/test/scoring_unittest.cc b/third_party/zxcvbn-cpp/test/scoring_unittest.cc
index 53fa512..9e1e25d 100644
--- a/third_party/zxcvbn-cpp/test/scoring_unittest.cc
+++ b/third_party/zxcvbn-cpp/test/scoring_unittest.cc
@@ -169,7 +169,7 @@
   struct {
     std::string token;
     std::string base_token;
-    int repeat_count;
+    size_t repeat_count;
   } tests[] = {
       {"aa", "a", 2},
       {"999", "9", 3},
diff --git a/tools/binary_size/libsupersize/obj_analyzer.py b/tools/binary_size/libsupersize/obj_analyzer.py
index 6e326e5..bf589a3 100755
--- a/tools/binary_size/libsupersize/obj_analyzer.py
+++ b/tools/binary_size/libsupersize/obj_analyzer.py
@@ -11,16 +11,16 @@
   Performs the actual work. Uses Process Pools to shard out per-object-file
   work and then aggregates results.
 
-_BulkObjectFileAnalyzerMaster:
+_BulkObjectFileAnalyzerHost:
   Creates a subprocess and sends IPCs to it asking it to do work.
 
-_BulkObjectFileAnalyzerSlave:
+_BulkObjectFileAnalyzerDelegate:
   Receives IPCs and delegates logic to _BulkObjectFileAnalyzerWorker.
   Runs _BulkObjectFileAnalyzerWorker on a background thread in order to stay
   responsive to IPCs.
 
 BulkObjectFileAnalyzer:
-  Extracts information from .o files. Alias for _BulkObjectFileAnalyzerMaster,
+  Extracts information from .o files. Alias for _BulkObjectFileAnalyzerHost,
   but when SUPERSIZE_DISABLE_ASYNC=1, alias for _BulkObjectFileAnalyzerWorker.
   * AnalyzePaths(): Processes all .o files to collect symbol names that exist
     within each. Does not work with thin archives (expand them first).
@@ -262,7 +262,7 @@
     _active_pids = []
 
 
-class _BulkObjectFileAnalyzerMaster(object):
+class _BulkObjectFileAnalyzerHost(object):
   """Runs BulkObjectFileAnalyzer in a subprocess."""
   def __init__(self, tool_prefix, output_directory, track_string_literals=True):
     self._tool_prefix = tool_prefix
@@ -289,8 +289,8 @@
       worker_analyzer = _BulkObjectFileAnalyzerWorker(
           self._tool_prefix, self._output_directory,
           track_string_literals=self._track_string_literals)
-      slave = _BulkObjectFileAnalyzerSlave(worker_analyzer, child_conn)
-      slave.Run()
+      delegate = _BulkObjectFileAnalyzerDelegate(worker_analyzer, child_conn)
+      delegate.Run()
 
   def AnalyzePaths(self, paths):
     if self._child_pid is None:
@@ -329,7 +329,7 @@
     # _active_pids to be killed just in case.
 
 
-class _BulkObjectFileAnalyzerSlave(object):
+class _BulkObjectFileAnalyzerDelegate(object):
   """The subprocess entry point."""
   def __init__(self, worker_analyzer, pipe):
     self._worker_analyzer = worker_analyzer
@@ -404,7 +404,7 @@
     sys.exit(0)
 
 
-BulkObjectFileAnalyzer = _BulkObjectFileAnalyzerMaster
+BulkObjectFileAnalyzer = _BulkObjectFileAnalyzerHost
 if parallel.DISABLE_ASYNC:
   BulkObjectFileAnalyzer = _BulkObjectFileAnalyzerWorker
 
@@ -424,8 +424,8 @@
                       format='%(levelname).1s %(relativeCreated)6d %(message)s')
 
   if args.multiprocess:
-    bulk_analyzer = _BulkObjectFileAnalyzerMaster(
-        args.tool_prefix, args.output_directory)
+    bulk_analyzer = _BulkObjectFileAnalyzerHost(args.tool_prefix,
+                                                args.output_directory)
   else:
     parallel.DISABLE_ASYNC = True
     bulk_analyzer = _BulkObjectFileAnalyzerWorker(
diff --git a/tools/metrics/histograms/enums.xml b/tools/metrics/histograms/enums.xml
index 486ce05..5d3569a 100644
--- a/tools/metrics/histograms/enums.xml
+++ b/tools/metrics/histograms/enums.xml
@@ -32957,6 +32957,8 @@
   <int value="3933" label="V8AbortSignal_Abort_Method"/>
   <int value="3934" label="SelectionBackgroundColorInversion"/>
   <int value="3935" label="RTCPeerConnectionPlanBThrewAnException"/>
+  <int value="3936" label="HTMLRootContained"/>
+  <int value="3937" label="HTMLBodyContained"/>
 </enum>
 
 <enum name="FeaturePolicyAllowlistType">
diff --git a/tools/metrics/histograms/histograms_xml/power/histograms.xml b/tools/metrics/histograms/histograms_xml/power/histograms.xml
index 617e24c3..6da1324 100644
--- a/tools/metrics/histograms/histograms_xml/power/histograms.xml
+++ b/tools/metrics/histograms/histograms_xml/power/histograms.xml
@@ -333,7 +333,7 @@
 </histogram>
 
 <histogram name="Power.CpuTimeSecondsPerProcessType.{Visibility}"
-    enum="ProcessType2" expires_after="2021-07-18">
+    enum="ProcessType2" expires_after="2022-07-18">
   <owner>eseckler@chromium.org</owner>
   <owner>skyostil@chromium.org</owner>
   <summary>
@@ -619,6 +619,9 @@
 
 <histogram name="Power.ForegroundBatteryDrain.TimeBetweenEvents" units="ms"
     expires_after="2021-07-03">
+  <obsolete>
+    Obsolete in M93, no longer needed.
+  </obsolete>
   <owner>eseckler@chromium.org</owner>
   <owner>skyostil@chromium.org</owner>
   <summary>
diff --git a/tools/metrics/histograms/histograms_xml/scanning/histograms.xml b/tools/metrics/histograms/histograms_xml/scanning/histograms.xml
index 51dfd18..1a8d5e4 100644
--- a/tools/metrics/histograms/histograms_xml/scanning/histograms.xml
+++ b/tools/metrics/histograms/histograms_xml/scanning/histograms.xml
@@ -21,7 +21,7 @@
 
 <histograms>
 
-<histogram name="Scanning.NumCompletedScanScansInSession" units="scans"
+<histogram name="Scanning.NumCompletedScansInSession" units="scans"
     expires_after="2021-11-17">
   <owner>gavinwill@chromium.org</owner>
   <owner>cros-peripherals@google.com</owner>
diff --git a/tools/metrics/histograms/histograms_xml/v8/histograms.xml b/tools/metrics/histograms/histograms_xml/v8/histograms.xml
index 806929f..7df7fd5 100644
--- a/tools/metrics/histograms/histograms_xml/v8/histograms.xml
+++ b/tools/metrics/histograms/histograms_xml/v8/histograms.xml
@@ -984,6 +984,23 @@
   </summary>
 </histogram>
 
+<histogram name="V8.MaxArrayBufferCageReservationSize" units="GB"
+    expires_after="2022-06-30">
+  <owner>saelo@chromium.org</owner>
+  <owner>ishell@chromium.org</owner>
+  <summary>
+    Largest possible size of the virtual memory region for an ArrayBuffer cage.
+
+    Measured and reported at process startup, right before initializing V8, by
+    attempting to reserve memory regions with decreasing size until the
+    reservation succeeds, then immediately freeing it again.
+
+    This experiment is part of the V8 Heap Sandbox and the V8 ArrayBuffer Caging
+    proposal. Its goal is to estimate the maximum possible size of an
+    ArrayBuffer cage region.
+  </summary>
+</histogram>
+
 <histogram name="V8.MemoryExternalFragmentationCodeSpace" units="%"
     expires_after="2020-03-01">
   <owner>hpayer@chromium.org</owner>
diff --git a/tools/perf/core/perfetto_binary_roller/binary_deps.json b/tools/perf/core/perfetto_binary_roller/binary_deps.json
index 3b23049..cfc1acf2 100644
--- a/tools/perf/core/perfetto_binary_roller/binary_deps.json
+++ b/tools/perf/core/perfetto_binary_roller/binary_deps.json
@@ -1,16 +1,16 @@
 {
     "trace_processor_shell": {
         "win": {
-            "hash": "85bc71120c59f2ab727b77378dd0b824a04ac30c",
-            "remote_path": "perfetto_binaries/trace_processor_shell/win/55fac0c2d4020a4dbef64c90617ddac1d4e8e23d/trace_processor_shell.exe"
+            "hash": "35d01e33d863bfcced1ee629e1fee54172f4d5c6",
+            "remote_path": "perfetto_binaries/trace_processor_shell/win/56c63bdcdb758d715a5f382c6b9f584e586c4c63/trace_processor_shell.exe"
         },
         "mac": {
-            "hash": "a5e635576b2b1575f0f76f4f318042fe2399f593",
-            "remote_path": "perfetto_binaries/trace_processor_shell/mac/55fac0c2d4020a4dbef64c90617ddac1d4e8e23d/trace_processor_shell"
+            "hash": "848fd8e2530e7f5d051fb2f68d88576e54584226",
+            "remote_path": "perfetto_binaries/trace_processor_shell/mac/8d191d6395c49babd37720c1b258207927346419/trace_processor_shell"
         },
         "linux": {
-            "hash": "d5aeb6c6ac6e74708edac28b35dec2df7792f671",
-            "remote_path": "perfetto_binaries/trace_processor_shell/linux/55fac0c2d4020a4dbef64c90617ddac1d4e8e23d/trace_processor_shell"
+            "hash": "f53ee2344b927a71d608cdac8acc7e7493593066",
+            "remote_path": "perfetto_binaries/trace_processor_shell/linux/8d191d6395c49babd37720c1b258207927346419/trace_processor_shell"
         }
     },
     "power_profile.sql": {
diff --git a/ui/accessibility/aura/aura_window_properties.cc b/ui/accessibility/aura/aura_window_properties.cc
index a9473d84..b69bfdd 100644
--- a/ui/accessibility/aura/aura_window_properties.cc
+++ b/ui/accessibility/aura/aura_window_properties.cc
@@ -18,4 +18,6 @@
                              kAXRoleOverride,
                              ax::mojom::Role::kNone)
 
+DEFINE_UI_CLASS_PROPERTY_KEY(bool, kAXConsiderInvisibleAndIgnoreChildren, false)
+
 }  // namespace ui
diff --git a/ui/accessibility/aura/aura_window_properties.h b/ui/accessibility/aura/aura_window_properties.h
index 9fa2b82..92334a7 100644
--- a/ui/accessibility/aura/aura_window_properties.h
+++ b/ui/accessibility/aura/aura_window_properties.h
@@ -22,6 +22,11 @@
 AX_EXPORT extern const aura::WindowProperty<ax::mojom::Role>* const
     kAXRoleOverride;
 
+// Whether to force a window to be invisible with its children ignored. Used
+// to hide the non-lock screen contents when the lock screen is shown.
+AX_EXPORT extern const aura::WindowProperty<bool>* const
+    kAXConsiderInvisibleAndIgnoreChildren;
+
 }  // namespace ui
 
 #endif  // UI_ACCESSIBILITY_AURA_AURA_WINDOW_PROPERTIES_H_
diff --git a/ui/android/java/res/values-v17/styles.xml b/ui/android/java/res/values-v17/styles.xml
index 7b31946..352b3ec 100644
--- a/ui/android/java/res/values-v17/styles.xml
+++ b/ui/android/java/res/values-v17/styles.xml
@@ -258,6 +258,11 @@
         <item name="android:textStyle">bold</item>
     </style>
 
+    <style name="TextAppearance.TextSmallThick.Secondary.Light" parent="TextAppearance.TextSmall.Secondary">
+        <item name="android:textColor">@color/default_text_color_secondary_light_list</item>
+        <item name="android:textStyle">bold</item>
+    </style>
+
     <!--  Dark version  -->
     <style name="TextAppearance.Headline.Primary.Dark" tools:ignore="UnusedResources">
         <item name="android:textColor">@color/default_text_color_dark</item>
diff --git a/ui/base/resource/data_pack.cc b/ui/base/resource/data_pack.cc
index a3f14e9..03d65dc 100644
--- a/ui/base/resource/data_pack.cc
+++ b/ui/base/resource/data_pack.cc
@@ -246,18 +246,17 @@
 
 class DataPack::BufferDataSource : public DataPack::DataSource {
  public:
-  explicit BufferDataSource(base::StringPiece buffer) : buffer_(buffer) {}
+  explicit BufferDataSource(base::span<const uint8_t> buffer)
+      : buffer_(buffer) {}
 
   ~BufferDataSource() override {}
 
   // DataPack::DataSource:
-  size_t GetLength() const override { return buffer_.length(); }
-  const uint8_t* GetData() const override {
-    return reinterpret_cast<const uint8_t*>(buffer_.data());
-  }
+  size_t GetLength() const override { return buffer_.size(); }
+  const uint8_t* GetData() const override { return buffer_.data(); }
 
  private:
-  base::StringPiece buffer_;
+  base::span<const uint8_t> buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferDataSource);
 };
@@ -329,7 +328,7 @@
   return LoadImpl(std::make_unique<MemoryMappedDataSource>(std::move(mmap)));
 }
 
-bool DataPack::LoadFromBuffer(base::StringPiece buffer) {
+bool DataPack::LoadFromBuffer(base::span<const uint8_t> buffer) {
   return LoadImpl(std::make_unique<BufferDataSource>(buffer));
 }
 
diff --git a/ui/base/resource/data_pack.h b/ui/base/resource/data_pack.h
index ee61a0aa..7dc58b68 100644
--- a/ui/base/resource/data_pack.h
+++ b/ui/base/resource/data_pack.h
@@ -54,7 +54,7 @@
 
   // Loads a pack file from |buffer|, returning false on error.
   // Data is not copied, |buffer| should stay alive during |DataPack| lifetime.
-  bool LoadFromBuffer(base::StringPiece buffer);
+  bool LoadFromBuffer(base::span<const uint8_t> buffer);
 
   // Writes a pack file containing |resources| to |path|. If there are any
   // text resources to be written, their encoding must already agree to the
diff --git a/ui/base/resource/data_pack_literal.cc b/ui/base/resource/data_pack_literal.cc
index f6669ed..b9e344d6 100644
--- a/ui/base/resource/data_pack_literal.cc
+++ b/ui/base/resource/data_pack_literal.cc
@@ -2,14 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <stddef.h>
-
 #include "ui/base/resource/data_pack_literal.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace ui {
 
-const char kSamplePakContentsV4[] = {
+const uint8_t kSamplePakContentsV4[] = {
     0x04, 0x00, 0x00, 0x00,              // header(version
     0x04, 0x00, 0x00, 0x00,              //        no. entries
     0x01,                                //        encoding)
@@ -23,7 +21,7 @@
 
 const size_t kSamplePakSizeV4 = sizeof(kSamplePakContentsV4);
 
-const char kSampleCompressPakContentsV5[] = {
+const uint8_t kSampleCompressPakContentsV5[] = {
     0x05, 0x00, 0x00, 0x00,              // version
     0x01, 0x00, 0x00, 0x00,              // encoding + padding
     0x03, 0x00, 0x01, 0x00,              // num_resources, num_aliases
@@ -51,7 +49,7 @@
 
 const size_t kSampleCompressPakSizeV5 = sizeof(kSampleCompressPakContentsV5);
 
-const char kSampleCompressScaledPakContents[] = {
+const uint8_t kSampleCompressScaledPakContents[] = {
     0x05, 0x00, 0x00, 0x00,              // version
     0x01, 0x00, 0x00, 0x00,              // encoding + padding
     0x03, 0x00, 0x01, 0x00,              // num_resources, num_aliases
@@ -76,7 +74,7 @@
 const size_t kSampleCompressScaledPakSize =
     sizeof(kSampleCompressScaledPakContents);
 
-const char kSampleCorruptPakContents[] = {
+const uint8_t kSampleCorruptPakContents[] = {
     0x04, 0x00, 0x00, 0x00,              // header(version
     0x04, 0x00, 0x00, 0x00,              //        no. entries
     0x01,                                //        encoding)
@@ -91,7 +89,7 @@
 
 const size_t kSampleCorruptPakSize = sizeof(kSampleCorruptPakContents);
 
-const char kSamplePakContents2x[] = {
+const uint8_t kSamplePakContents2x[] = {
     0x04, 0x00, 0x00, 0x00,              // header(version
     0x01, 0x00, 0x00, 0x00,              //        no. entries
     0x01,                                //        encoding)
@@ -102,7 +100,7 @@
 
 const size_t kSamplePakSize2x = sizeof(kSamplePakContents2x);
 
-const char kEmptyPakContents[] = {
+const uint8_t kEmptyPakContents[] = {
     0x04, 0x00, 0x00, 0x00,             // header(version
     0x00, 0x00, 0x00, 0x00,             //        no. entries
     0x01,                               //        encoding)
diff --git a/ui/base/resource/data_pack_literal.h b/ui/base/resource/data_pack_literal.h
index 83a8dc0..32232076 100644
--- a/ui/base/resource/data_pack_literal.h
+++ b/ui/base/resource/data_pack_literal.h
@@ -5,19 +5,22 @@
 #ifndef UI_BASE_RESOURCE_DATA_PACK_LITERAL_H_
 #define UI_BASE_RESOURCE_DATA_PACK_LITERAL_H_
 
+#include <stddef.h>
+#include <stdint.h>
+
 namespace ui {
 
-extern const char kSamplePakContentsV4[];
+extern const uint8_t kSamplePakContentsV4[];
 extern const size_t kSamplePakSizeV4;
-extern const char kSampleCompressPakContentsV5[];
+extern const uint8_t kSampleCompressPakContentsV5[];
 extern const size_t kSampleCompressPakSizeV5;
-extern const char kSampleCompressScaledPakContents[];
+extern const uint8_t kSampleCompressScaledPakContents[];
 extern const size_t kSampleCompressScaledPakSize;
-extern const char kSamplePakContents2x[];
+extern const uint8_t kSamplePakContents2x[];
 extern const size_t kSamplePakSize2x;
-extern const char kEmptyPakContents[];
+extern const uint8_t kEmptyPakContents[];
 extern const size_t kEmptyPakSize;
-extern const char kSampleCorruptPakContents[];
+extern const uint8_t kSampleCorruptPakContents[];
 extern const size_t kSampleCorruptPakSize;
 
 }  // namespace ui
diff --git a/ui/base/resource/data_pack_unittest.cc b/ui/base/resource/data_pack_unittest.cc
index 25d3063..f3ff7d55 100644
--- a/ui/base/resource/data_pack_unittest.cc
+++ b/ui/base/resource/data_pack_unittest.cc
@@ -36,8 +36,8 @@
       dir.GetPath().Append(FILE_PATH_LITERAL("sample.pak"));
 
   // Dump contents into the pak file.
-  ASSERT_TRUE(base::WriteFile(
-      data_path, base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4)));
+  ASSERT_TRUE(
+      base::WriteFile(data_path, {kSamplePakContentsV4, kSamplePakSizeV4}));
 
   // Load the file through the data pack API.
   DataPack pack(SCALE_FACTOR_100P);
@@ -71,7 +71,7 @@
   // Dump contents into a compressed pak file.
   std::string compressed;
   ASSERT_TRUE(compression::GzipCompress(
-      base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4), &compressed));
+      {kSamplePakContentsV4, kSamplePakSizeV4}, &compressed));
   ASSERT_TRUE(base::WriteFile(data_path, compressed));
 
   // Load the file through the data pack API.
@@ -104,8 +104,8 @@
       dir.GetPath().Append(FILE_PATH_LITERAL("sample.pak"));
 
   // Dump contents into the pak file.
-  ASSERT_TRUE(base::WriteFile(
-      data_path, base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4)));
+  ASSERT_TRUE(
+      base::WriteFile(data_path, {kSamplePakContentsV4, kSamplePakSizeV4}));
 
   base::File file(data_path, base::File::FLAG_OPEN | base::File::FLAG_READ);
   ASSERT_TRUE(file.IsValid());
@@ -143,8 +143,8 @@
   // by the actual pak file content.
   const uint8_t kPadding[5678] = {0};
   ASSERT_TRUE(base::WriteFile(data_path, kPadding));
-  ASSERT_TRUE(base::AppendToFile(
-      data_path, base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4)));
+  ASSERT_TRUE(
+      base::AppendToFile(data_path, {kSamplePakContentsV4, kSamplePakSizeV4}));
 
   base::File file(data_path, base::File::FLAG_OPEN | base::File::FLAG_READ);
   ASSERT_TRUE(file.IsValid());
@@ -176,8 +176,7 @@
 TEST(DataPackTest, LoadFromBufferV4) {
   DataPack pack(SCALE_FACTOR_100P);
 
-  ASSERT_TRUE(pack.LoadFromBuffer(
-      base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4)));
+  ASSERT_TRUE(pack.LoadFromBuffer({kSamplePakContentsV4, kSamplePakSizeV4}));
 
   base::StringPiece data;
   ASSERT_TRUE(pack.HasResource(4));
@@ -201,8 +200,8 @@
 TEST(DataPackTest, LoadFromBufferV5) {
   DataPack pack(SCALE_FACTOR_100P);
 
-  ASSERT_TRUE(pack.LoadFromBuffer(base::StringPiece(
-      kSampleCompressPakContentsV5, kSampleCompressPakSizeV5)));
+  ASSERT_TRUE(pack.LoadFromBuffer(
+      {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
 
   base::StringPiece data;
   ASSERT_TRUE(pack.HasResource(4));
@@ -342,8 +341,8 @@
       dir.GetPath().Append(FILE_PATH_LITERAL("sample.pak"));
 
   // Dump contents into the pak file.
-  ASSERT_TRUE(base::WriteFile(
-      data_path, base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4)));
+  ASSERT_TRUE(
+      base::WriteFile(data_path, {kSamplePakContentsV4, kSamplePakSizeV4}));
 
   base::File file(data_path, base::File::FLAG_OPEN | base::File::FLAG_READ);
   ASSERT_TRUE(file.IsValid());
@@ -357,8 +356,7 @@
   ASSERT_TRUE(pack.GetStringPiece(10, &data));
 
   ASSERT_TRUE(base::WriteFile(
-      data_path,
-      base::StringPiece(kSampleCorruptPakContents, kSampleCorruptPakSize)));
+      data_path, {kSampleCorruptPakContents, kSampleCorruptPakSize}));
 
   // Reading asset #10 should now fail as it extends past the end of the file.
   ASSERT_TRUE(pack.HasResource(10));
diff --git a/ui/base/resource/resource_bundle.cc b/ui/base/resource/resource_bundle.cc
index 65b1649..5bf4ca4 100644
--- a/ui/base/resource/resource_bundle.cc
+++ b/ui/base/resource/resource_bundle.cc
@@ -341,7 +341,7 @@
                             scale_factor);
 }
 
-void ResourceBundle::AddDataPackFromBuffer(base::StringPiece buffer,
+void ResourceBundle::AddDataPackFromBuffer(base::span<const uint8_t> buffer,
                                            ScaleFactor scale_factor) {
   std::unique_ptr<DataPack> data_pack(new DataPack(scale_factor));
   if (data_pack->LoadFromBuffer(buffer)) {
diff --git a/ui/base/resource/resource_bundle.h b/ui/base/resource/resource_bundle.h
index c20987a4..c6c5da1c 100644
--- a/ui/base/resource/resource_bundle.h
+++ b/ui/base/resource/resource_bundle.h
@@ -218,7 +218,7 @@
                                  ScaleFactor scale_factor);
 
   // Same as above but using contents of the given buffer.
-  void AddDataPackFromBuffer(base::StringPiece buffer,
+  void AddDataPackFromBuffer(base::span<const uint8_t> buffer,
                              ScaleFactor scale_factor);
 
   // Same as AddDataPackFromPath but does not log an error if the pack fails to
diff --git a/ui/base/resource/resource_bundle_unittest.cc b/ui/base/resource/resource_bundle_unittest.cc
index bf5818d..864db95ce 100644
--- a/ui/base/resource/resource_bundle_unittest.cc
+++ b/ui/base/resource/resource_bundle_unittest.cc
@@ -259,9 +259,8 @@
   base::FilePath data_path =
       temp_dir_.GetPath().Append(FILE_PATH_LITERAL("sample.pak"));
   // Dump contents into a pak file and load it.
-  ASSERT_TRUE(
-      base::WriteFile(data_path, base::StringPiece(kSampleCompressPakContentsV5,
-                                                   kSampleCompressPakSizeV5)));
+  ASSERT_TRUE(base::WriteFile(
+      data_path, {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
   ResourceBundle* resource_bundle = CreateResourceBundle(nullptr);
   resource_bundle->AddDataPackFromPath(data_path, SCALE_FACTOR_100P);
 
@@ -278,9 +277,8 @@
   base::FilePath data_path =
       temp_dir_.GetPath().Append(FILE_PATH_LITERAL("sample.pak"));
   // Dump contents into a pak file and load it.
-  ASSERT_TRUE(
-      base::WriteFile(data_path, base::StringPiece(kSampleCompressPakContentsV5,
-                                                   kSampleCompressPakSizeV5)));
+  ASSERT_TRUE(base::WriteFile(
+      data_path, {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
   ResourceBundle* resource_bundle = CreateResourceBundle(nullptr);
   resource_bundle->AddDataPackFromPath(data_path, SCALE_FACTOR_100P);
 
@@ -378,8 +376,8 @@
     // Write an empty data pak for locale data.
     const base::FilePath& locale_path = dir_path().Append(
         FILE_PATH_LITERAL("locale.pak"));
-    EXPECT_TRUE(base::WriteFile(
-        locale_path, base::StringPiece(kEmptyPakContents, kEmptyPakSize)));
+    EXPECT_TRUE(
+        base::WriteFile(locale_path, {kEmptyPakContents, kEmptyPakSize}));
 
     ui::ResourceBundle* resource_bundle = CreateResourceBundle(nullptr);
 
@@ -407,9 +405,8 @@
   base::FilePath data_path = dir_path().Append(FILE_PATH_LITERAL("sample.pak"));
 
   // Dump contents into the pak files.
-  ASSERT_TRUE(
-      base::WriteFile(data_path, base::StringPiece(kSampleCompressPakContentsV5,
-                                                   kSampleCompressPakSizeV5)));
+  ASSERT_TRUE(base::WriteFile(
+      data_path, {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
 
   // Load pak file.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
@@ -440,8 +437,7 @@
   base::FilePath data_path = dir_path().Append(FILE_PATH_LITERAL("sample.pak"));
 
   // Dump contents into the pak files.
-  ASSERT_TRUE(base::WriteFile(
-      data_path, base::StringPiece(kEmptyPakContents, kEmptyPakSize)));
+  ASSERT_TRUE(base::WriteFile(data_path, {kEmptyPakContents, kEmptyPakSize}));
 
   // Create a resource bundle from the file.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
@@ -465,12 +461,10 @@
       dir_path().Append(FILE_PATH_LITERAL("sample_2x.pak"));
 
   // Dump content into pak files.
-  ASSERT_TRUE(
-      base::WriteFile(data_path, base::StringPiece(kSampleCompressPakContentsV5,
-                                                   kSampleCompressPakSizeV5)));
   ASSERT_TRUE(base::WriteFile(
-      data_2x_path, base::StringPiece(kSampleCompressScaledPakContents,
-                                      kSampleCompressScaledPakSize)));
+      data_path, {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
+  ASSERT_TRUE(base::WriteFile(data_2x_path, {kSampleCompressScaledPakContents,
+                                             kSampleCompressScaledPakSize}));
 
   // Load pak files.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
@@ -488,9 +482,8 @@
 TEST_F(ResourceBundleImageTest, LoadLocalizedResourceString) {
   base::FilePath data_path = dir_path().Append(FILE_PATH_LITERAL("sample.pak"));
   // Dump content into pak file.
-  ASSERT_TRUE(
-      base::WriteFile(data_path, base::StringPiece(kSampleCompressPakContentsV5,
-                                                   kSampleCompressPakSizeV5)));
+  ASSERT_TRUE(base::WriteFile(
+      data_path, {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
   // Load pak file.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
   resource_bundle->AddDataPackFromPath(data_path, SCALE_FACTOR_NONE);
@@ -503,9 +496,8 @@
 TEST_F(ResourceBundleImageTest, LoadDataResourceString) {
   base::FilePath data_path = dir_path().Append(FILE_PATH_LITERAL("sample.pak"));
   // Dump content into pak file.
-  ASSERT_TRUE(
-      base::WriteFile(data_path, base::StringPiece(kSampleCompressPakContentsV5,
-                                                   kSampleCompressPakSizeV5)));
+  ASSERT_TRUE(base::WriteFile(
+      data_path, {kSampleCompressPakContentsV5, kSampleCompressPakSizeV5}));
   // Load pak file.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
   resource_bundle->AddDataPackFromPath(data_path, SCALE_FACTOR_NONE);
@@ -526,10 +518,10 @@
       dir_path().Append(FILE_PATH_LITERAL("sample_2x.pak"));
 
   // Dump contents into the pak files.
-  ASSERT_TRUE(base::WriteFile(
-      data_path, base::StringPiece(kSamplePakContentsV4, kSamplePakSizeV4)));
-  ASSERT_TRUE(base::WriteFile(
-      data_2x_path, base::StringPiece(kSamplePakContents2x, kSamplePakSize2x)));
+  ASSERT_TRUE(
+      base::WriteFile(data_path, {kSamplePakContentsV4, kSamplePakSizeV4}));
+  ASSERT_TRUE(
+      base::WriteFile(data_2x_path, {kSamplePakContents2x, kSamplePakSize2x}));
 
   // Load the regular and 2x pak files.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
diff --git a/ui/color/BUILD.gn b/ui/color/BUILD.gn
index b0c1eba7..99a364cc 100644
--- a/ui/color/BUILD.gn
+++ b/ui/color/BUILD.gn
@@ -56,6 +56,14 @@
   }
 }
 
+source_set("test_support") {
+  testonly = true
+
+  sources = [ "color_test_ids.h" ]
+
+  deps = [ ":color_headers" ]
+}
+
 test("color_unittests") {
   testonly = true
 
@@ -64,7 +72,6 @@
     "color_provider_manager_unittest.cc",
     "color_provider_unittest.cc",
     "color_recipe_unittest.cc",
-    "color_test_ids.h",
     "color_transform_unittest.cc",
     "run_all_unittests.cc",
   ]
@@ -72,6 +79,7 @@
   deps = [
     ":color",
     ":mixers",
+    ":test_support",
     "//base/test:test_support",
     "//testing/gtest",
   ]
diff --git a/ui/views/accessibility/ax_window_obj_wrapper.cc b/ui/views/accessibility/ax_window_obj_wrapper.cc
index baf2182f..99fcf96 100644
--- a/ui/views/accessibility/ax_window_obj_wrapper.cc
+++ b/ui/views/accessibility/ax_window_obj_wrapper.cc
@@ -124,6 +124,10 @@
     return;
   }
 
+  // Ignore this window's children if it is forced to be invisible.
+  if (window_->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren))
+    return;
+
   for (auto* child : window_->children())
     out_children->push_back(aura_obj_cache_->GetOrCreate(child));
 
@@ -163,11 +167,17 @@
     out_node_data->role = ax::mojom::Role::kWindow;
   out_node_data->AddStringAttribute(ax::mojom::StringAttribute::kName,
                                     base::UTF16ToUTF8(window_->GetTitle()));
-  if (!window_->IsVisible())
+  if (!window_->IsVisible() ||
+      window_->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren)) {
     out_node_data->AddState(ax::mojom::State::kInvisible);
+  }
 
   out_node_data->relative_bounds.bounds =
       gfx::RectF(window_->GetBoundsInScreen());
+
+  out_node_data->AddStringAttribute(ax::mojom::StringAttribute::kClassName,
+                                    GetWindowName(window_));
+
   std::string* child_ax_tree_id_ptr = window_->GetProperty(ui::kChildAXTreeID);
   if (child_ax_tree_id_ptr) {
     ui::AXTreeID child_ax_tree_id =
@@ -184,16 +194,14 @@
       // non-visible so prune it.
       if (!window_->GetToplevelWindow() ||
           GetWidgetForWindow(window_->GetToplevelWindow()) ||
-          !window_->IsVisible()) {
+          !window_->IsVisible() ||
+          window_->GetProperty(ui::kAXConsiderInvisibleAndIgnoreChildren)) {
         return;
       }
 
       out_node_data->AddChildTreeId(child_ax_tree_id);
     }
   }
-
-  out_node_data->AddStringAttribute(ax::mojom::StringAttribute::kClassName,
-                                    GetWindowName(window_));
 }
 
 ui::AXNodeID AXWindowObjWrapper::GetUniqueId() const {
@@ -241,11 +249,13 @@
 void AXWindowObjWrapper::OnWindowPropertyChanged(aura::Window* window,
                                                  const void* key,
                                                  intptr_t old) {
-  if (window_destroying_)
+  if (window_destroying_ || window != window_)
     return;
 
-  if (window == window_ && key == ui::kChildAXTreeID)
+  if (key == ui::kChildAXTreeID ||
+      key == ui::kAXConsiderInvisibleAndIgnoreChildren) {
     FireEvent(ax::mojom::Event::kChildrenChanged);
+  }
 }
 
 void AXWindowObjWrapper::OnWindowVisibilityChanged(aura::Window* window,
diff --git a/weblayer/browser/java/org/chromium/weblayer_private/ExternalNavigationDelegateImpl.java b/weblayer/browser/java/org/chromium/weblayer_private/ExternalNavigationDelegateImpl.java
index 77403ce..d944a6a 100644
--- a/weblayer/browser/java/org/chromium/weblayer_private/ExternalNavigationDelegateImpl.java
+++ b/weblayer/browser/java/org/chromium/weblayer_private/ExternalNavigationDelegateImpl.java
@@ -10,6 +10,7 @@
 
 import androidx.annotation.Nullable;
 
+import org.chromium.base.Callback;
 import org.chromium.base.Function;
 import org.chromium.base.PackageManagerUtils;
 import org.chromium.components.embedder_support.util.UrlUtilities;
@@ -118,6 +119,18 @@
     }
 
     @Override
+    public boolean hasCustomLeavingIncognitoDialog() {
+        return false;
+    }
+
+    @Override
+    public void presentLeavingIncognitoDialog(Callback<Boolean> onUserDecision) {
+        // This should never be called due to returning false in
+        // hasCustomLeavingIncognitoDialog().
+        assert false;
+    }
+
+    @Override
     public void maybeAdjustInstantAppExtras(Intent intent, boolean isIntentToInstantApp) {}
 
     @Override
diff --git a/weblayer/browser/permissions/permission_manager_factory.cc b/weblayer/browser/permissions/permission_manager_factory.cc
index 8b7fa13..79fa2e5 100644
--- a/weblayer/browser/permissions/permission_manager_factory.cc
+++ b/weblayer/browser/permissions/permission_manager_factory.cc
@@ -4,11 +4,13 @@
 
 #include "weblayer/browser/permissions/permission_manager_factory.h"
 
+#include "base/no_destructor.h"
 #include "build/build_config.h"
 #include "components/background_sync/background_sync_permission_context.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/permissions/contexts/accessibility_permission_context.h"
+#include "components/permissions/contexts/camera_pan_tilt_zoom_permission_context.h"
 #include "components/permissions/contexts/clipboard_read_write_permission_context.h"
 #include "components/permissions/contexts/clipboard_sanitized_write_permission_context.h"
 #include "components/permissions/contexts/midi_permission_context.h"
@@ -18,6 +20,7 @@
 #include "components/permissions/contexts/wake_lock_permission_context.h"
 #include "components/permissions/permission_context_base.h"
 #include "components/permissions/permission_manager.h"
+#include "components/webrtc/media_stream_device_enumerator_impl.h"
 #include "content/public/browser/permission_type.h"
 #include "third_party/blink/public/mojom/permissions_policy/permissions_policy_feature.mojom-shared.h"
 #include "weblayer/browser/background_fetch/background_fetch_permission_context.h"
@@ -64,6 +67,16 @@
   bool IsRestrictedToSecureOrigins() const override { return true; }
 };
 
+// Used by the CameraPanTiltZoomPermissionContext to query which devices support
+// that API.
+// TODO(crbug.com/1219486): Move this elsewhere once we're using a custom
+// implementation of MediaStreamDeviceEnumerator to expose this information to
+// WebLayer embedders via an API.
+webrtc::MediaStreamDeviceEnumerator* GetMediaStreamDeviceEnumerator() {
+  static base::NoDestructor<webrtc::MediaStreamDeviceEnumeratorImpl> instance;
+  return instance.get();
+}
+
 permissions::PermissionManager::PermissionContextMap CreatePermissionContexts(
     content::BrowserContext* browser_context) {
   permissions::PermissionManager::PermissionContextMap permission_contexts;
@@ -134,6 +147,9 @@
   permission_contexts[ContentSettingsType::WAKE_LOCK_SYSTEM] =
       std::make_unique<permissions::WakeLockPermissionContext>(
           browser_context, ContentSettingsType::WAKE_LOCK_SYSTEM);
+  permission_contexts[ContentSettingsType::CAMERA_PAN_TILT_ZOOM] =
+      std::make_unique<permissions::CameraPanTiltZoomPermissionContext>(
+          browser_context, GetMediaStreamDeviceEnumerator());
 
   // For now, all requests are denied. As features are added, their permission
   // contexts can be added here instead of DeniedPermissionContext.