chrome/browser/ui/ui_features.cc - chromium/src - Git at Google

 // Copyright 2019 The Chromium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "chrome/browser/ui/ui_features.h"

 #include "base/feature_list.h"
 #include "base/metrics/field_trial_params.h"
 #include "build/build_config.h"
 #include "build/chromeos_buildflags.h"

 namespace features {

 // Enables the tab dragging fallback when full window dragging is not supported
 // by the platform (e.g. Wayland). See https://crbug.com/896640
 BASE_FEATURE(kAllowWindowDragUsingSystemDragDrop,
              "AllowWindowDragUsingSystemDragDrop",
              base::FEATURE_DISABLED_BY_DEFAULT);

 #if !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kDesktopPWAsAppHomePage,
              "DesktopPWAsAppHomePage",
              base::FEATURE_DISABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)

 // Enables Chrome Labs menu in the toolbar. See https://crbug.com/1145666
 BASE_FEATURE(kChromeLabs, "ChromeLabs", base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables "Chrome What's New" UI.
 BASE_FEATURE(kChromeWhatsNewUI,
              "ChromeWhatsNewUI",
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING) && !defined(ANDROID) && \
     !BUILDFLAG(IS_CHROMEOS_LACROS) && !BUILDFLAG(IS_CHROMEOS_ASH)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_DISABLED_BY_DEFAULT
 #endif
 );

 // Create new Extensions app menu option (removing "More Tools -> Extensions")
 // with submenu to manage extensions and visit chrome web store.
 BASE_FEATURE(kExtensionsMenuInAppMenu,
              "ExtensionsMenuInAppMenu",
              base::FEATURE_ENABLED_BY_DEFAULT);

 #if !defined(ANDROID)
 // Enables "Access Code Cast" UI.
 BASE_FEATURE(kAccessCodeCastUI,
              "AccessCodeCastUI",
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif

 #if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
 // Enables camera preview in permission bubble and site settings.
 BASE_FEATURE(kCameraMicPreview,
              "CameraMicPreview",
              base::FEATURE_DISABLED_BY_DEFAULT);
 #endif

 // Enables displaying the submenu to open a link with a different profile if
 // there is at least one other active profile.
 BASE_FEATURE(kDisplayOpenLinkAsProfile,
              "DisplayOpenLinkAsProfile",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables showing the EV certificate details in the Page Info bubble.
 BASE_FEATURE(kEvDetailsInPageInfo,
              "EvDetailsInPageInfo",
              base::FEATURE_ENABLED_BY_DEFAULT);

 #if !BUILDFLAG(IS_ANDROID) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
 // Enables showing the "Get the most out of Chrome" section in settings.
 BASE_FEATURE(kGetTheMostOutOfChrome,
              "GetTheMostOutOfChrome",
              base::FEATURE_DISABLED_BY_DEFAULT);
 #endif

 #if !BUILDFLAG(IS_ANDROID) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
 // This feature controls whether the user can be shown the Chrome for iOS promo
 // when saving/updating their passwords.
 BASE_FEATURE(kIOSPromoPasswordBubble,
              "IOSPromoPasswordBubble",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // This array lists the different activation params that can be passed in the
 // experiment config, with their corresponding string.
 constexpr base::FeatureParam<IOSPromoPasswordBubbleActivation>::Option
     kIOSPromoPasswordBubbleActivationOptions[] = {
         {IOSPromoPasswordBubbleActivation::kContextualDirect,
          "contextual-direct"},
         {IOSPromoPasswordBubbleActivation::kContextualIndirect,
          "contextual-indirect"},
         {IOSPromoPasswordBubbleActivation::kNonContextualDirect,
          "non-contextual-direct"},
         {IOSPromoPasswordBubbleActivation::kNonContextualIndirect,
          "non-contextual-indirect"},
         {IOSPromoPasswordBubbleActivation::kAlwaysShowWithPasswordBubbleDirect,
          "always-show-direct"},
         {IOSPromoPasswordBubbleActivation::
              kAlwaysShowWithPasswordBubbleIndirect,
          "always-show-indirect"}};

 constexpr base::FeatureParam<IOSPromoPasswordBubbleActivation>
     kIOSPromoPasswordBubbleActivationParam{
         &kIOSPromoPasswordBubble, "activation",
         IOSPromoPasswordBubbleActivation::kContextualDirect,
         &kIOSPromoPasswordBubbleActivationOptions};
 #endif

 #if BUILDFLAG(ENABLE_EXTENSIONS)
 // Controls whether we use a different UX for simple extensions overriding
 // settings.
 BASE_FEATURE(kLightweightExtensionOverrideConfirmations,
              "LightweightExtensionOverrideConfirmations",
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif

 // Enables Bookmarks++ Side Panel UI.
 BASE_FEATURE(kPowerBookmarksSidePanel,
              "PowerBookmarksSidePanel",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables the QuickCommands UI surface. See https://crbug.com/1014639
 BASE_FEATURE(kQuickCommands,
              "QuickCommands",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables the side search feature for Google Search. Presents recent Google
 // search results in a browser side panel.
 BASE_FEATURE(kSideSearch, "SideSearch", base::FEATURE_ENABLED_BY_DEFAULT);

 BASE_FEATURE(kSideSearchFeedback,
              "SideSearchFeedback",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Displays right-click search results of a highlighted text in side panel,
 // So users are not forced to switch to a new tab to view the search results
 BASE_FEATURE(kSearchWebInSidePanel,
              "SearchWebInSidePanel",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Feature that controls whether or not feature engagement configurations can be
 // used to control automatic triggering for side search.
 BASE_FEATURE(kSideSearchAutoTriggering,
              "SideSearchAutoTriggering",
              base::FEATURE_ENABLED_BY_DEFAULT);

 // Feature param that determines how many times a user has to return to a given
 // SRP before we automatically trigger the side search side panel for that SRP
 // on a subsequent navigation.
 const base::FeatureParam<int> kSideSearchAutoTriggeringReturnCount{
     &kSideSearchAutoTriggering, "SideSearchAutoTriggeringReturnCount", 2};

 BASE_FEATURE(kSidePanelWebView,
              "SidePanelWebView",
              base::FEATURE_DISABLED_BY_DEFAULT);

 BASE_FEATURE(kSidePanelJourneysQueryless,
              "SidePanelJourneysQueryless",
              base::FEATURE_DISABLED_BY_DEFAULT);

 #if !defined(ANDROID)
 BASE_FEATURE(kSidePanelCompanionDefaultPinned,
              "SidePanelCompanionDefaultPinned",
              base::FEATURE_DISABLED_BY_DEFAULT);
 #endif

 // Enables tabs to scroll in the tabstrip. https://crbug.com/951078
 BASE_FEATURE(kScrollableTabStrip,
              "ScrollableTabStrip",
              base::FEATURE_DISABLED_BY_DEFAULT);
 const char kMinimumTabWidthFeatureParameterName[] = "minTabWidth";

 // Enables buttons when scrolling the tabstrip https://crbug.com/951078
 BASE_FEATURE(kTabScrollingButtonPosition,
              "TabScrollingButtonPosition",
              base::FEATURE_ENABLED_BY_DEFAULT);
 const char kTabScrollingButtonPositionParameterName[] = "buttonPosition";

 // Enables tab scrolling while dragging tabs in tabstrip
 // https://crbug.com/1145747
 BASE_FEATURE(kScrollableTabStripWithDragging,
              "kScrollableTabStripWithDragging",
              base::FEATURE_DISABLED_BY_DEFAULT);
 const char kTabScrollingWithDraggingModeName[] = "tabScrollWithDragMode";

 // Enables different methods of overflow when scrolling tabs in tabstrip
 // https://crbug.com/951078
 BASE_FEATURE(kScrollableTabStripOverflow,
              "kScrollableTabStripOverflow",
              base::FEATURE_DISABLED_BY_DEFAULT);
 const char kScrollableTabStripOverflowModeName[] = "tabScrollOverflow";

 // Splits pinned and unpinned tabs into separate TabStrips.
 // https://crbug.com/1346019
 BASE_FEATURE(kSplitTabStrip,
              "SplitTabStrip",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables tabs to be frozen when collapsed.
 // https://crbug.com/1110108
 BASE_FEATURE(kTabGroupsCollapseFreezing,
              "TabGroupsCollapseFreezing",
              base::FEATURE_ENABLED_BY_DEFAULT);

 // Enables users to explicitly save and recall tab groups.
 // https://crbug.com/1223929
 BASE_FEATURE(kTabGroupsSave,
              "TabGroupsSave",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables configuring tab hover card image previews in the settings.
 BASE_FEATURE(kTabHoverCardImageSettings,
              "TabHoverCardImageSettings",
              base::FEATURE_ENABLED_BY_DEFAULT);

 // Enables preview images in tab-hover cards.
 // https://crbug.com/928954
 BASE_FEATURE(kTabHoverCardImages,
              "TabHoverCardImages",
 #if BUILDFLAG(IS_MAC)
              base::FEATURE_DISABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );

 const char kTabHoverCardImagesNotReadyDelayParameterName[] =
     "page_not_ready_delay";
 const char kTabHoverCardImagesLoadingDelayParameterName[] =
     "page_loading_delay";
 const char kTabHoverCardImagesLoadedDelayParameterName[] = "page_loaded_delay";
 const char kTabHoverCardImagesCrossfadePreviewAtParameterName[] =
     "crossfade_preview_at";
 const char kTabHoverCardAdditionalMaxWidthDelay[] =
     "additional_max_width_delay";

 BASE_FEATURE(kTabSearchChevronIcon,
              "TabSearchChevronIcon",
              base::FEATURE_ENABLED_BY_DEFAULT);

 // Enables the tab search submit feedback button.
 BASE_FEATURE(kTabSearchFeedback,
              "TabSearchFeedback",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Controls whether or not to use fuzzy search for tab search.
 BASE_FEATURE(kTabSearchFuzzySearch,
              "TabSearchFuzzySearch",
              base::FEATURE_DISABLED_BY_DEFAULT);

 const char kTabSearchSearchThresholdName[] = "TabSearchSearchThreshold";

 const base::FeatureParam<bool> kTabSearchSearchIgnoreLocation{
     &kTabSearchFuzzySearch, "TabSearchSearchIgnoreLocation", false};

 // If this feature parameter is enabled, show media tabs in both "Audio & Video"
 // section and "Open Tabs" section.
 const char kTabSearchAlsoShowMediaTabsinOpenTabsSectionParameterName[] =
     "Also show Media Tabs in Open Tabs Section";

 const base::FeatureParam<int> kTabSearchSearchDistance{
     &kTabSearchFuzzySearch, "TabSearchSearchDistance", 200};

 const base::FeatureParam<double> kTabSearchSearchThreshold{
     &kTabSearchFuzzySearch, kTabSearchSearchThresholdName, 0.6};

 const base::FeatureParam<double> kTabSearchTitleWeight{
     &kTabSearchFuzzySearch, "TabSearchTitleWeight", 2.0};

 const base::FeatureParam<double> kTabSearchHostnameWeight{
     &kTabSearchFuzzySearch, "TabSearchHostnameWeight", 1.0};

 const base::FeatureParam<double> kTabSearchGroupTitleWeight{
     &kTabSearchFuzzySearch, "TabSearchGroupTitleWeight", 1.5};

 const base::FeatureParam<bool> kTabSearchMoveActiveTabToBottom{
     &kTabSearchFuzzySearch, "TabSearchMoveActiveTabToBottom", true};

 // Controls feature parameters for Tab Search's `Recently Closed` entries.
 BASE_FEATURE(kTabSearchRecentlyClosed,
              "TabSearchRecentlyClosed",
              base::FEATURE_ENABLED_BY_DEFAULT);

 const base::FeatureParam<int> kTabSearchRecentlyClosedDefaultItemDisplayCount{
     &kTabSearchRecentlyClosed, "TabSearchRecentlyClosedDefaultItemDisplayCount",
     8};

 const base::FeatureParam<int> kTabSearchRecentlyClosedTabCountThreshold{
     &kTabSearchRecentlyClosed, "TabSearchRecentlyClosedTabCountThreshold", 100};

 BASE_FEATURE(kTabSearchUseMetricsReporter,
              "TabSearchUseMetricsReporter",
              base::FEATURE_DISABLED_BY_DEFAULT);

 BASE_FEATURE(kToolbarUseHardwareBitmapDraw,
              "ToolbarUseHardwareBitmapDraw",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Controls whether top chrome pages will use the spare renderer if no top
 // chrome renderers are present.
 BASE_FEATURE(kTopChromeWebUIUsesSpareRenderer,
              "TopChromeWebUIUsesSpareRenderer",
              base::FEATURE_ENABLED_BY_DEFAULT);

 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
 // Enables alternate update-related text to be displayed in browser app menu
 // button, menu item and confirmation dialog.
 BASE_FEATURE(kUpdateTextOptions,
              "UpdateTextOptions",
              base::FEATURE_DISABLED_BY_DEFAULT);
 // Used to present different flavors of update strings in browser app menu
 // button.
 const base::FeatureParam<int> kUpdateTextOptionNumber{
     &kUpdateTextOptions, "UpdateTextOptionNumber", 1};
 #endif

 // This enables enables persistence of a WebContents in a 1-to-1 association
 // with the current Profile for WebUI bubbles. See https://crbug.com/1177048.
 BASE_FEATURE(kWebUIBubblePerProfilePersistence,
              "WebUIBubblePerProfilePersistence",
              base::FEATURE_DISABLED_BY_DEFAULT);

 // Enables a web-based tab strip. See https://crbug.com/989131. Note this
 // feature only works when the ENABLE_WEBUI_TAB_STRIP buildflag is enabled.
 BASE_FEATURE(kWebUITabStrip,
              "WebUITabStrip",
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_DISABLED_BY_DEFAULT
 #endif
 );

 // The default value of this flag is aligned with platform behavior to handle
 // context menu with touch.
 // TODO(crbug.com/1257626): Enable this flag for all platforms after launch.
 BASE_FEATURE(kWebUITabStripContextMenuAfterTap,
              "WebUITabStripContextMenuAfterTap",
 #if BUILDFLAG(IS_CHROMEOS_ASH)
              base::FEATURE_DISABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );

 #if BUILDFLAG(IS_CHROMEOS)
 BASE_FEATURE(kChromeOSTabSearchCaptionButton,
              "ChromeOSTabSearchCaptionButton",
              base::FEATURE_DISABLED_BY_DEFAULT);
 #endif

 #if BUILDFLAG(IS_MAC)
 // Enabled an experiment which increases the prominence to grant MacOS system
 // location permission to Chrome when location permissions have already been
 // approved. https://crbug.com/1211052
 BASE_FEATURE(kLocationPermissionsExperiment,
              "LocationPermissionsExperiment",
              base::FEATURE_DISABLED_BY_DEFAULT);
 constexpr base::FeatureParam<int>
     kLocationPermissionsExperimentBubblePromptLimit{
         &kLocationPermissionsExperiment, "bubble_prompt_count", 3};
 constexpr base::FeatureParam<int>
     kLocationPermissionsExperimentLabelPromptLimit{
         &kLocationPermissionsExperiment, "label_prompt_count", 5};

 BASE_FEATURE(kViewsFirstRunDialog,
              "ViewsFirstRunDialog",
              base::FEATURE_DISABLED_BY_DEFAULT);

 BASE_FEATURE(kViewsTaskManager,
              "ViewsTaskManager",
              base::FEATURE_DISABLED_BY_DEFAULT);

 BASE_FEATURE(kViewsJSAppModalDialog,
              "ViewsJSAppModalDialog",
              base::FEATURE_DISABLED_BY_DEFAULT);

 int GetLocationPermissionsExperimentBubblePromptLimit() {
   return kLocationPermissionsExperimentBubblePromptLimit.Get();
 }
 int GetLocationPermissionsExperimentLabelPromptLimit() {
   return kLocationPermissionsExperimentLabelPromptLimit.Get();
 }
 #endif

 // Reduce resource usage when view is hidden by not rendering loading animation.
 BASE_FEATURE(kStopLoadingAnimationForHiddenWindow,
              "StopLoadingAnimationForHiddenWindow",
              base::FEATURE_DISABLED_BY_DEFAULT);

 }  // namespace features
	// Copyright 2019 The Chromium Authors
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "chrome/browser/ui/ui_features.h"

	#include "base/feature_list.h"
	#include "base/metrics/field_trial_params.h"
	#include "build/build_config.h"
	#include "build/chromeos_buildflags.h"

	namespace features {

	// Enables the tab dragging fallback when full window dragging is not supported
	// by the platform (e.g. Wayland). See https://crbug.com/896640
	BASE_FEATURE(kAllowWindowDragUsingSystemDragDrop,
	"AllowWindowDragUsingSystemDragDrop",
	base::FEATURE_DISABLED_BY_DEFAULT);

	#if !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)
	BASE_FEATURE(kDesktopPWAsAppHomePage,
	"DesktopPWAsAppHomePage",
	base::FEATURE_DISABLED_BY_DEFAULT);
	#endif // !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)

	// Enables Chrome Labs menu in the toolbar. See https://crbug.com/1145666
	BASE_FEATURE(kChromeLabs, "ChromeLabs", base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables "Chrome What's New" UI.
	BASE_FEATURE(kChromeWhatsNewUI,
	"ChromeWhatsNewUI",
	#if BUILDFLAG(GOOGLE_CHROME_BRANDING) && !defined(ANDROID) && \
	!BUILDFLAG(IS_CHROMEOS_LACROS) && !BUILDFLAG(IS_CHROMEOS_ASH)
	base::FEATURE_ENABLED_BY_DEFAULT
	#else
	base::FEATURE_DISABLED_BY_DEFAULT
	#endif
	);

	// Create new Extensions app menu option (removing "More Tools -> Extensions")
	// with submenu to manage extensions and visit chrome web store.
	BASE_FEATURE(kExtensionsMenuInAppMenu,
	"ExtensionsMenuInAppMenu",
	base::FEATURE_ENABLED_BY_DEFAULT);

	#if !defined(ANDROID)
	// Enables "Access Code Cast" UI.
	BASE_FEATURE(kAccessCodeCastUI,
	"AccessCodeCastUI",
	base::FEATURE_ENABLED_BY_DEFAULT);
	#endif

	#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
	// Enables camera preview in permission bubble and site settings.
	BASE_FEATURE(kCameraMicPreview,
	"CameraMicPreview",
	base::FEATURE_DISABLED_BY_DEFAULT);
	#endif

	// Enables displaying the submenu to open a link with a different profile if
	// there is at least one other active profile.
	BASE_FEATURE(kDisplayOpenLinkAsProfile,
	"DisplayOpenLinkAsProfile",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables showing the EV certificate details in the Page Info bubble.
	BASE_FEATURE(kEvDetailsInPageInfo,
	"EvDetailsInPageInfo",
	base::FEATURE_ENABLED_BY_DEFAULT);

	#if !BUILDFLAG(IS_ANDROID) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
	// Enables showing the "Get the most out of Chrome" section in settings.
	BASE_FEATURE(kGetTheMostOutOfChrome,
	"GetTheMostOutOfChrome",
	base::FEATURE_DISABLED_BY_DEFAULT);
	#endif

	#if !BUILDFLAG(IS_ANDROID) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
	// This feature controls whether the user can be shown the Chrome for iOS promo
	// when saving/updating their passwords.
	BASE_FEATURE(kIOSPromoPasswordBubble,
	"IOSPromoPasswordBubble",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// This array lists the different activation params that can be passed in the
	// experiment config, with their corresponding string.
	constexpr base::FeatureParam<IOSPromoPasswordBubbleActivation>::Option
	kIOSPromoPasswordBubbleActivationOptions[] = {
	{IOSPromoPasswordBubbleActivation::kContextualDirect,
	"contextual-direct"},
	{IOSPromoPasswordBubbleActivation::kContextualIndirect,
	"contextual-indirect"},
	{IOSPromoPasswordBubbleActivation::kNonContextualDirect,
	"non-contextual-direct"},
	{IOSPromoPasswordBubbleActivation::kNonContextualIndirect,
	"non-contextual-indirect"},
	{IOSPromoPasswordBubbleActivation::kAlwaysShowWithPasswordBubbleDirect,
	"always-show-direct"},
	{IOSPromoPasswordBubbleActivation::
	kAlwaysShowWithPasswordBubbleIndirect,
	"always-show-indirect"}};

	constexpr base::FeatureParam<IOSPromoPasswordBubbleActivation>
	kIOSPromoPasswordBubbleActivationParam{
	&kIOSPromoPasswordBubble, "activation",
	IOSPromoPasswordBubbleActivation::kContextualDirect,
	&kIOSPromoPasswordBubbleActivationOptions};
	#endif

	#if BUILDFLAG(ENABLE_EXTENSIONS)
	// Controls whether we use a different UX for simple extensions overriding
	// settings.
	BASE_FEATURE(kLightweightExtensionOverrideConfirmations,
	"LightweightExtensionOverrideConfirmations",
	base::FEATURE_ENABLED_BY_DEFAULT);
	#endif

	// Enables Bookmarks++ Side Panel UI.
	BASE_FEATURE(kPowerBookmarksSidePanel,
	"PowerBookmarksSidePanel",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables the QuickCommands UI surface. See https://crbug.com/1014639
	BASE_FEATURE(kQuickCommands,
	"QuickCommands",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables the side search feature for Google Search. Presents recent Google
	// search results in a browser side panel.
	BASE_FEATURE(kSideSearch, "SideSearch", base::FEATURE_ENABLED_BY_DEFAULT);

	BASE_FEATURE(kSideSearchFeedback,
	"SideSearchFeedback",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Displays right-click search results of a highlighted text in side panel,
	// So users are not forced to switch to a new tab to view the search results
	BASE_FEATURE(kSearchWebInSidePanel,
	"SearchWebInSidePanel",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Feature that controls whether or not feature engagement configurations can be
	// used to control automatic triggering for side search.
	BASE_FEATURE(kSideSearchAutoTriggering,
	"SideSearchAutoTriggering",
	base::FEATURE_ENABLED_BY_DEFAULT);

	// Feature param that determines how many times a user has to return to a given
	// SRP before we automatically trigger the side search side panel for that SRP
	// on a subsequent navigation.
	const base::FeatureParam<int> kSideSearchAutoTriggeringReturnCount{
	&kSideSearchAutoTriggering, "SideSearchAutoTriggeringReturnCount", 2};

	BASE_FEATURE(kSidePanelWebView,
	"SidePanelWebView",
	base::FEATURE_DISABLED_BY_DEFAULT);

	BASE_FEATURE(kSidePanelJourneysQueryless,
	"SidePanelJourneysQueryless",
	base::FEATURE_DISABLED_BY_DEFAULT);

	#if !defined(ANDROID)
	BASE_FEATURE(kSidePanelCompanionDefaultPinned,
	"SidePanelCompanionDefaultPinned",
	base::FEATURE_DISABLED_BY_DEFAULT);
	#endif

	// Enables tabs to scroll in the tabstrip. https://crbug.com/951078
	BASE_FEATURE(kScrollableTabStrip,
	"ScrollableTabStrip",
	base::FEATURE_DISABLED_BY_DEFAULT);
	const char kMinimumTabWidthFeatureParameterName[] = "minTabWidth";

	// Enables buttons when scrolling the tabstrip https://crbug.com/951078
	BASE_FEATURE(kTabScrollingButtonPosition,
	"TabScrollingButtonPosition",
	base::FEATURE_ENABLED_BY_DEFAULT);
	const char kTabScrollingButtonPositionParameterName[] = "buttonPosition";

	// Enables tab scrolling while dragging tabs in tabstrip
	// https://crbug.com/1145747
	BASE_FEATURE(kScrollableTabStripWithDragging,
	"kScrollableTabStripWithDragging",
	base::FEATURE_DISABLED_BY_DEFAULT);
	const char kTabScrollingWithDraggingModeName[] = "tabScrollWithDragMode";

	// Enables different methods of overflow when scrolling tabs in tabstrip
	// https://crbug.com/951078
	BASE_FEATURE(kScrollableTabStripOverflow,
	"kScrollableTabStripOverflow",
	base::FEATURE_DISABLED_BY_DEFAULT);
	const char kScrollableTabStripOverflowModeName[] = "tabScrollOverflow";

	// Splits pinned and unpinned tabs into separate TabStrips.
	// https://crbug.com/1346019
	BASE_FEATURE(kSplitTabStrip,
	"SplitTabStrip",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables tabs to be frozen when collapsed.
	// https://crbug.com/1110108
	BASE_FEATURE(kTabGroupsCollapseFreezing,
	"TabGroupsCollapseFreezing",
	base::FEATURE_ENABLED_BY_DEFAULT);

	// Enables users to explicitly save and recall tab groups.
	// https://crbug.com/1223929
	BASE_FEATURE(kTabGroupsSave,
	"TabGroupsSave",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables configuring tab hover card image previews in the settings.
	BASE_FEATURE(kTabHoverCardImageSettings,
	"TabHoverCardImageSettings",
	base::FEATURE_ENABLED_BY_DEFAULT);

	// Enables preview images in tab-hover cards.
	// https://crbug.com/928954
	BASE_FEATURE(kTabHoverCardImages,
	"TabHoverCardImages",
	#if BUILDFLAG(IS_MAC)
	base::FEATURE_DISABLED_BY_DEFAULT
	#else
	base::FEATURE_ENABLED_BY_DEFAULT
	#endif
	);

	const char kTabHoverCardImagesNotReadyDelayParameterName[] =
	"page_not_ready_delay";
	const char kTabHoverCardImagesLoadingDelayParameterName[] =
	"page_loading_delay";
	const char kTabHoverCardImagesLoadedDelayParameterName[] = "page_loaded_delay";
	const char kTabHoverCardImagesCrossfadePreviewAtParameterName[] =
	"crossfade_preview_at";
	const char kTabHoverCardAdditionalMaxWidthDelay[] =
	"additional_max_width_delay";

	BASE_FEATURE(kTabSearchChevronIcon,
	"TabSearchChevronIcon",
	base::FEATURE_ENABLED_BY_DEFAULT);

	// Enables the tab search submit feedback button.
	BASE_FEATURE(kTabSearchFeedback,
	"TabSearchFeedback",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Controls whether or not to use fuzzy search for tab search.
	BASE_FEATURE(kTabSearchFuzzySearch,
	"TabSearchFuzzySearch",
	base::FEATURE_DISABLED_BY_DEFAULT);

	const char kTabSearchSearchThresholdName[] = "TabSearchSearchThreshold";

	const base::FeatureParam<bool> kTabSearchSearchIgnoreLocation{
	&kTabSearchFuzzySearch, "TabSearchSearchIgnoreLocation", false};

	// If this feature parameter is enabled, show media tabs in both "Audio & Video"
	// section and "Open Tabs" section.
	const char kTabSearchAlsoShowMediaTabsinOpenTabsSectionParameterName[] =
	"Also show Media Tabs in Open Tabs Section";

	const base::FeatureParam<int> kTabSearchSearchDistance{
	&kTabSearchFuzzySearch, "TabSearchSearchDistance", 200};

	const base::FeatureParam<double> kTabSearchSearchThreshold{
	&kTabSearchFuzzySearch, kTabSearchSearchThresholdName, 0.6};

	const base::FeatureParam<double> kTabSearchTitleWeight{
	&kTabSearchFuzzySearch, "TabSearchTitleWeight", 2.0};

	const base::FeatureParam<double> kTabSearchHostnameWeight{
	&kTabSearchFuzzySearch, "TabSearchHostnameWeight", 1.0};

	const base::FeatureParam<double> kTabSearchGroupTitleWeight{
	&kTabSearchFuzzySearch, "TabSearchGroupTitleWeight", 1.5};

	const base::FeatureParam<bool> kTabSearchMoveActiveTabToBottom{
	&kTabSearchFuzzySearch, "TabSearchMoveActiveTabToBottom", true};

	// Controls feature parameters for Tab Search's `Recently Closed` entries.
	BASE_FEATURE(kTabSearchRecentlyClosed,
	"TabSearchRecentlyClosed",
	base::FEATURE_ENABLED_BY_DEFAULT);

	const base::FeatureParam<int> kTabSearchRecentlyClosedDefaultItemDisplayCount{
	&kTabSearchRecentlyClosed, "TabSearchRecentlyClosedDefaultItemDisplayCount",
	8};

	const base::FeatureParam<int> kTabSearchRecentlyClosedTabCountThreshold{
	&kTabSearchRecentlyClosed, "TabSearchRecentlyClosedTabCountThreshold", 100};

	BASE_FEATURE(kTabSearchUseMetricsReporter,
	"TabSearchUseMetricsReporter",
	base::FEATURE_DISABLED_BY_DEFAULT);

	BASE_FEATURE(kToolbarUseHardwareBitmapDraw,
	"ToolbarUseHardwareBitmapDraw",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Controls whether top chrome pages will use the spare renderer if no top
	// chrome renderers are present.
	BASE_FEATURE(kTopChromeWebUIUsesSpareRenderer,
	"TopChromeWebUIUsesSpareRenderer",
	base::FEATURE_ENABLED_BY_DEFAULT);

	#if BUILDFLAG(IS_WIN) \|\| BUILDFLAG(IS_MAC) \|\| BUILDFLAG(IS_LINUX)
	// Enables alternate update-related text to be displayed in browser app menu
	// button, menu item and confirmation dialog.
	BASE_FEATURE(kUpdateTextOptions,
	"UpdateTextOptions",
	base::FEATURE_DISABLED_BY_DEFAULT);
	// Used to present different flavors of update strings in browser app menu
	// button.
	const base::FeatureParam<int> kUpdateTextOptionNumber{
	&kUpdateTextOptions, "UpdateTextOptionNumber", 1};
	#endif

	// This enables enables persistence of a WebContents in a 1-to-1 association
	// with the current Profile for WebUI bubbles. See https://crbug.com/1177048.
	BASE_FEATURE(kWebUIBubblePerProfilePersistence,
	"WebUIBubblePerProfilePersistence",
	base::FEATURE_DISABLED_BY_DEFAULT);

	// Enables a web-based tab strip. See https://crbug.com/989131. Note this
	// feature only works when the ENABLE_WEBUI_TAB_STRIP buildflag is enabled.
	BASE_FEATURE(kWebUITabStrip,
	"WebUITabStrip",
	#if BUILDFLAG(IS_CHROMEOS)
	base::FEATURE_ENABLED_BY_DEFAULT
	#else
	base::FEATURE_DISABLED_BY_DEFAULT
	#endif
	);

	// The default value of this flag is aligned with platform behavior to handle
	// context menu with touch.
	// TODO(crbug.com/1257626): Enable this flag for all platforms after launch.
	BASE_FEATURE(kWebUITabStripContextMenuAfterTap,
	"WebUITabStripContextMenuAfterTap",
	#if BUILDFLAG(IS_CHROMEOS_ASH)
	base::FEATURE_DISABLED_BY_DEFAULT
	#else
	base::FEATURE_ENABLED_BY_DEFAULT
	#endif
	);

	#if BUILDFLAG(IS_CHROMEOS)
	BASE_FEATURE(kChromeOSTabSearchCaptionButton,
	"ChromeOSTabSearchCaptionButton",
	base::FEATURE_DISABLED_BY_DEFAULT);
	#endif

	#if BUILDFLAG(IS_MAC)
	// Enabled an experiment which increases the prominence to grant MacOS system
	// location permission to Chrome when location permissions have already been
	// approved. https://crbug.com/1211052
	BASE_FEATURE(kLocationPermissionsExperiment,
	"LocationPermissionsExperiment",
	base::FEATURE_DISABLED_BY_DEFAULT);
	constexpr base::FeatureParam<int>
	kLocationPermissionsExperimentBubblePromptLimit{
	&kLocationPermissionsExperiment, "bubble_prompt_count", 3};
	constexpr base::FeatureParam<int>
	kLocationPermissionsExperimentLabelPromptLimit{
	&kLocationPermissionsExperiment, "label_prompt_count", 5};

	BASE_FEATURE(kViewsFirstRunDialog,
	"ViewsFirstRunDialog",
	base::FEATURE_DISABLED_BY_DEFAULT);

	BASE_FEATURE(kViewsTaskManager,
	"ViewsTaskManager",
	base::FEATURE_DISABLED_BY_DEFAULT);

	BASE_FEATURE(kViewsJSAppModalDialog,
	"ViewsJSAppModalDialog",
	base::FEATURE_DISABLED_BY_DEFAULT);

	int GetLocationPermissionsExperimentBubblePromptLimit() {
	return kLocationPermissionsExperimentBubblePromptLimit.Get();
	}
	int GetLocationPermissionsExperimentLabelPromptLimit() {
	return kLocationPermissionsExperimentLabelPromptLimit.Get();
	}
	#endif

	// Reduce resource usage when view is hidden by not rendering loading animation.
	BASE_FEATURE(kStopLoadingAnimationForHiddenWindow,
	"StopLoadingAnimationForHiddenWindow",
	base::FEATURE_DISABLED_BY_DEFAULT);

	} // namespace features