content/browser/devtools/protocol/devtools_protocol_browsertest.cc

// 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.

#include <stddef.h>

#include <memory>
#include <utility>

#include "base/base64.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/files/scoped_temp_dir.h"
#include "base/json/json_reader.h"
#include "base/logging.h"
#include "base/strings/stringprintf.h"
#include "base/system/sys_info.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/values_test_util.h"
#include "base/values.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "components/download/public/common/download_file_factory.h"
#include "components/download/public/common/download_file_impl.h"
#include "components/download/public/common/download_task_runner.h"
#include "content/browser/devtools/protocol/devtools_download_manager_delegate.h"
#include "content/browser/devtools/protocol/devtools_protocol_test_support.h"
#include "content/browser/devtools/render_frame_devtools_agent_host.h"
#include "content/browser/download/download_manager_impl.h"
#include "content/browser/renderer_host/navigator.h"
#include "content/browser/renderer_host/render_widget_host_view_base.h"
#include "content/browser/service_worker/embedded_worker_test_helper.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/javascript_dialog_manager.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/ssl_status.h"
#include "content/public/browser/tracing_controller.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/url_constants.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/download_test_observer.h"
#include "content/public/test/no_renderer_crashes_assertion.h"
#include "content/public/test/slow_download_http_response.h"
#include "content/public/test/test_navigation_observer.h"
#include "content/shell/browser/shell.h"
#include "content/shell/browser/shell_browser_context.h"
#include "content/shell/browser/shell_content_browser_client.h"
#include "content/shell/browser/shell_download_manager_delegate.h"
#include "services/tracing/public/cpp/perfetto/perfetto_config.h"
#include "services/tracing/public/cpp/tracing_features.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "third_party/blink/public/common/chrome_debug_urls.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/base/layout.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/display/screen.h"
#include "ui/gfx/codec/jpeg_codec.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/skia_conversions.h"
#include "ui/snapshot/snapshot.h"

#if defined(OS_POSIX)
#include "base/task/deferred_sequenced_task_runner.h"
#include "base/tracing/perfetto_task_runner.h"
#include "services/tracing/perfetto/system_test_utils.h"
#endif

#define EXPECT_SIZE_EQ(expected, actual)               \
  do {                                                 \
    EXPECT_EQ((expected).width(), (actual).width());   \
    EXPECT_EQ((expected).height(), (actual).height()); \
  } while (false)

using testing::ElementsAre;

namespace content {

namespace {

class TestJavaScriptDialogManager : public JavaScriptDialogManager,
                                    public WebContentsDelegate {
 public:
  TestJavaScriptDialogManager() {}

  TestJavaScriptDialogManager(const TestJavaScriptDialogManager&) = delete;
  TestJavaScriptDialogManager& operator=(const TestJavaScriptDialogManager&) =
      delete;

  ~TestJavaScriptDialogManager() override {}

  void Handle() {
    if (!callback_.is_null()) {
      std::move(callback_).Run(true, std::u16string());
    } else {
      handle_ = true;
    }
  }

  // WebContentsDelegate
  JavaScriptDialogManager* GetJavaScriptDialogManager(
      WebContents* source) override {
    return this;
  }

  // JavaScriptDialogManager
  void RunJavaScriptDialog(WebContents* web_contents,
                           RenderFrameHost* render_frame_host,
                           JavaScriptDialogType dialog_type,
                           const std::u16string& message_text,
                           const std::u16string& default_prompt_text,
                           DialogClosedCallback callback,
                           bool* did_suppress_message) override {
    if (handle_) {
      handle_ = false;
      std::move(callback).Run(true, std::u16string());
    } else {
      callback_ = std::move(callback);
    }
  }

  void RunBeforeUnloadDialog(WebContents* web_contents,
                             RenderFrameHost* render_frame_host,
                             bool is_reload,
                             DialogClosedCallback callback) override {}

  bool HandleJavaScriptDialog(WebContents* web_contents,
                              bool accept,
                              const std::u16string* prompt_override) override {
    is_handled_ = true;
    return true;
  }

  void CancelDialogs(WebContents* web_contents,
                     bool reset_state) override {}

  bool is_handled() { return is_handled_; }

 private:
  DialogClosedCallback callback_;
  bool handle_ = false;
  bool is_handled_ = false;
};

}  // namespace

class SitePerProcessDevToolsProtocolTest : public DevToolsProtocolTest {
 public:
  void SetUpCommandLine(base::CommandLine* command_line) override {
    DevToolsProtocolTest::SetUpCommandLine(command_line);
    IsolateAllSitesForTesting(command_line);
  }
};

class SyntheticKeyEventTest : public DevToolsProtocolTest {
 protected:
  void SendKeyEvent(const std::string& type,
                    int modifier,
                    int windowsKeyCode,
                    int nativeKeyCode,
                    const std::string& key,
                    bool wait) {
    std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
    params->SetString("type", type);
    params->SetInteger("modifiers", modifier);
    params->SetInteger("windowsVirtualKeyCode", windowsKeyCode);
    params->SetInteger("nativeVirtualKeyCode", nativeKeyCode);
    params->SetString("key", key);
    SendCommand("Input.dispatchKeyEvent", std::move(params), wait);
  }
};

class SyntheticMouseEventTest : public DevToolsProtocolTest {
 protected:
  void SendMouseEvent(const std::string& type,
                      int x,
                      int y,
                      const std::string& button,
                      bool wait) {
    std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
    params->SetString("type", type);
    params->SetInteger("x", x);
    params->SetInteger("y", y);
    if (!button.empty()) {
      params->SetString("button", button);
      params->SetInteger("clickCount", 1);
    }
    SendCommand("Input.dispatchMouseEvent", std::move(params), wait);
  }
};

IN_PROC_BROWSER_TEST_F(SyntheticKeyEventTest, KeyEventSynthesizeKey) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  ASSERT_TRUE(content::ExecJs(
      shell()->web_contents(),
      "function handleKeyEvent(event) {"
      "domAutomationController.send(event.key);"
      "}"
      "document.body.addEventListener('keydown', handleKeyEvent);"
      "document.body.addEventListener('keyup', handleKeyEvent);"));

  DOMMessageQueue dom_message_queue;

  // Send enter (keycode 13).
  SendKeyEvent("rawKeyDown", 0, 13, 13, "Enter", true);
  SendKeyEvent("keyUp", 0, 13, 13, "Enter", true);

  std::string key;
  ASSERT_TRUE(dom_message_queue.WaitForMessage(&key));
  EXPECT_EQ("\"Enter\"", key);
  ASSERT_TRUE(dom_message_queue.WaitForMessage(&key));
  EXPECT_EQ("\"Enter\"", key);

  // Send escape (keycode 27).
  SendKeyEvent("rawKeyDown", 0, 27, 27, "Escape", true);
  SendKeyEvent("keyUp", 0, 27, 27, "Escape", true);

  ASSERT_TRUE(dom_message_queue.WaitForMessage(&key));
  EXPECT_EQ("\"Escape\"", key);
  ASSERT_TRUE(dom_message_queue.WaitForMessage(&key));
  EXPECT_EQ("\"Escape\"", key);
}

// Flaky: https://crbug.com/889878
IN_PROC_BROWSER_TEST_F(SyntheticKeyEventTest, DISABLED_KeyboardEventAck) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  ASSERT_TRUE(content::ExecJs(
      shell()->web_contents(),
      "document.body.addEventListener('keydown', () => {debugger;});"));

  auto filter = std::make_unique<InputMsgWatcher>(
      RenderWidgetHostImpl::From(shell()
                                     ->web_contents()
                                     ->GetMainFrame()
                                     ->GetRenderViewHost()
                                     ->GetWidget()),
      blink::WebInputEvent::Type::kRawKeyDown);

  SendCommand("Debugger.enable", nullptr);
  SendKeyEvent("rawKeyDown", 0, 13, 13, "Enter", false);

  // We expect that the debugger message event arrives *before* the input
  // event ack, and the subsequent command response for Input.dispatchKeyEvent.
  WaitForNotification("Debugger.paused");
  EXPECT_FALSE(filter->HasReceivedAck());
  EXPECT_EQ(1u, result_ids_.size());

  SendCommand("Debugger.resume", nullptr);
  filter->WaitForAck();
  EXPECT_EQ(3u, result_ids_.size());
}

// Flaky: https://crbug.com/1263461
IN_PROC_BROWSER_TEST_F(SyntheticMouseEventTest, DISABLED_MouseEventAck) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  ASSERT_TRUE(content::ExecJs(
      shell()->web_contents(),
      "document.body.addEventListener('mousedown', () => {debugger;});"));

  auto filter = std::make_unique<InputMsgWatcher>(
      RenderWidgetHostImpl::From(shell()
                                     ->web_contents()
                                     ->GetMainFrame()
                                     ->GetRenderViewHost()
                                     ->GetWidget()),
      blink::WebInputEvent::Type::kMouseDown);

  SendCommand("Debugger.enable", nullptr);
  SendMouseEvent("mousePressed", 15, 15, "left", false);

  // We expect that the debugger message event arrives *before* the input
  // event ack, and the subsequent command response for
  // Input.dispatchMouseEvent.
  WaitForNotification("Debugger.paused");
  EXPECT_FALSE(filter->HasReceivedAck());
  EXPECT_EQ(1u, result_ids_.size());

  SendCommand("Debugger.resume", nullptr);
  filter->WaitForAck();
  EXPECT_EQ(3u, result_ids_.size());
}

namespace {
bool DecodePNG(std::string base64_data, SkBitmap* bitmap) {
  std::string png_data;
  if (!base::Base64Decode(base64_data, &png_data))
    return false;
  return gfx::PNGCodec::Decode(
      reinterpret_cast<unsigned const char*>(png_data.data()), png_data.size(),
      bitmap);
}

std::unique_ptr<SkBitmap> DecodeJPEG(std::string base64_data) {
  std::string jpeg_data;
  if (!base::Base64Decode(base64_data, &jpeg_data))
    return nullptr;
  return gfx::JPEGCodec::Decode(
      reinterpret_cast<unsigned const char*>(jpeg_data.data()),
      jpeg_data.size());
}

int ColorsSquareDiff(SkColor color1, SkColor color2) {
  auto a_diff = static_cast<int>(SkColorGetA(color1)) -
                static_cast<int>(SkColorGetA(color2));
  auto r_diff = static_cast<int>(SkColorGetR(color1)) -
                static_cast<int>(SkColorGetR(color2));
  auto g_diff = static_cast<int>(SkColorGetG(color1)) -
                static_cast<int>(SkColorGetG(color2));
  auto b_diff = static_cast<int>(SkColorGetB(color1)) -
                static_cast<int>(SkColorGetB(color2));
  return a_diff * a_diff + r_diff * r_diff + g_diff * g_diff +
             b_diff * b_diff;
}

bool ColorsMatchWithinLimit(SkColor color1, SkColor color2, int max_collor_diff) {
  return ColorsSquareDiff(color1, color2) <= max_collor_diff * max_collor_diff;
}

// Adapted from cc::ExactPixelComparator.
bool MatchesBitmap(const SkBitmap& expected_bmp,
                   const SkBitmap& actual_bmp,
                   const gfx::Rect& matching_mask,
                   float device_scale_factor,
                   int max_collor_diff) {
  // Number of pixels with an error
  int error_pixels_count = 0;

  gfx::Rect error_bounding_rect = gfx::Rect();

  // Scale expectations along with the mask.
  device_scale_factor = device_scale_factor ? device_scale_factor : 1;

  // Check that bitmaps have identical dimensions.
  int expected_width = round(expected_bmp.width() * device_scale_factor);
  int expected_height = round(expected_bmp.height() * device_scale_factor);
  EXPECT_EQ(expected_width, actual_bmp.width());
  EXPECT_EQ(expected_height, actual_bmp.height());
  if (expected_width != actual_bmp.width() ||
      expected_height != actual_bmp.height()) {
    return false;
  }

  DCHECK(gfx::SkIRectToRect(actual_bmp.bounds()).Contains(matching_mask));

  for (int x = matching_mask.x(); x < matching_mask.right(); ++x) {
    for (int y = matching_mask.y(); y < matching_mask.bottom(); ++y) {
      SkColor actual_color =
          actual_bmp.getColor(x * device_scale_factor, y * device_scale_factor);
      SkColor expected_color = expected_bmp.getColor(x, y);
      if (!ColorsMatchWithinLimit(actual_color, expected_color, max_collor_diff)) {
        if (error_pixels_count < 10) {
          LOG(ERROR) << "Pixel (" << x << "," << y
                     << "). Expected: " << std::hex << expected_color
                     << ", actual: " << actual_color << std::dec
                     << ", square diff: " << ColorsSquareDiff(expected_color, actual_color);
        }
        error_pixels_count++;
        error_bounding_rect.Union(gfx::Rect(x, y, 1, 1));
      }
    }
  }

  if (error_pixels_count != 0) {
    LOG(ERROR) << "Number of pixel with an error: " << error_pixels_count;
    LOG(ERROR) << "Error Bounding Box : " << error_bounding_rect.ToString();
    return false;
  }

  return true;
}
}  // namespace

enum class ScreenshotEncoding { PNG, JPEG, WEBP };

std::string EncodingEnumToString(ScreenshotEncoding encoding) {
  switch (encoding) {
    case ScreenshotEncoding::PNG:
      return "png";
    case ScreenshotEncoding::JPEG:
      return "jpeg";
    case ScreenshotEncoding::WEBP:
      return "webp";
    default:
      return "";
  }
}

class CaptureScreenshotTest : public DevToolsProtocolTest {
 protected:
  std::unique_ptr<SkBitmap> CaptureScreenshot(
      ScreenshotEncoding encoding,
      bool from_surface,
      const gfx::RectF& clip = gfx::RectF(),
      float clip_scale = 0,
      bool capture_beyond_viewport = false) {
    std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
    params->SetString("format", EncodingEnumToString(encoding));
    params->SetInteger("quality", 100);
    params->SetBoolean("fromSurface", from_surface);
    if (capture_beyond_viewport) {
      params->SetBoolean("captureBeyondViewport", true);
    }
    if (clip_scale) {
      base::DictionaryValue clip_value;
      clip_value.SetDouble("x", clip.x());
      clip_value.SetDouble("y", clip.y());
      clip_value.SetDouble("width", clip.width());
      clip_value.SetDouble("height", clip.height());
      clip_value.SetDouble("scale", clip_scale);
      params->SetKey("clip", std::move(clip_value));
    }
    SendCommand("Page.captureScreenshot", std::move(params));

    std::string base64;
    EXPECT_TRUE(result_->GetString("data", &base64));
    std::unique_ptr<SkBitmap> result_bitmap;
    if (encoding == ScreenshotEncoding::PNG) {
      result_bitmap = std::make_unique<SkBitmap>();
      EXPECT_TRUE(DecodePNG(base64, result_bitmap.get()));
    } else if (encoding == ScreenshotEncoding::JPEG) {
      result_bitmap = DecodeJPEG(base64);
    } else {
      // Decode not implemented.
    }
    EXPECT_TRUE(result_bitmap);
    return result_bitmap;
  }

  void CaptureScreenshotAndCompareTo(const SkBitmap& expected_bitmap,
                                     ScreenshotEncoding encoding,
                                     bool from_surface,
                                     float device_scale_factor = 0,
                                     const gfx::RectF& clip = gfx::RectF(),
                                     float clip_scale = 0,
                                     bool capture_beyond_viewport = false) {
    std::unique_ptr<SkBitmap> result_bitmap = CaptureScreenshot(
        encoding, from_surface, clip, clip_scale, capture_beyond_viewport);

    gfx::Rect matching_mask(gfx::SkIRectToRect(expected_bitmap.bounds()));
#if defined(OS_MAC)
    // Mask out the corners, which may be drawn differently on Mac because of
    // rounded corners.
    matching_mask.Inset(4, 4, 4, 4);
#endif

    // A color profile can be installed on the host that could affect
    // pixel colors. Also JPEG compression could further distort the color.
    // Allow some error between actual and expected pixel values.
    // That assumes there is no shift in pixel positions, so it only works
    // reliably if all pixels have equal values.
    int max_collor_diff = 20;

    EXPECT_TRUE(MatchesBitmap(expected_bitmap, *result_bitmap, matching_mask,
                              device_scale_factor, max_collor_diff));
  }

  // Takes a screenshot of a colored box that is positioned inside the frame.
  void PlaceAndCaptureBox(const gfx::Size& frame_size,
                          const gfx::Size& box_size,
                          float screenshot_scale,
                          float device_scale_factor) {
    static const int kBoxOffsetHeight = 100;
    const gfx::Size scaled_box_size =
        ScaleToFlooredSize(box_size, screenshot_scale);
    std::unique_ptr<base::DictionaryValue> params;

    VLOG(1) << "Testing screenshot of box with size " << box_size.width() << "x"
            << box_size.height() << "px at scale " << screenshot_scale
            << " ...";

    // Draw a blue box of provided size in the horizontal center of the page.
    EXPECT_TRUE(content::ExecJs(
        shell()->web_contents(),
        base::StringPrintf(
            "var style = document.body.style;                             "
            "style.overflow = 'hidden';                                   "
            "style.minHeight = '%dpx';                                    "
            "style.backgroundImage = 'linear-gradient(#0000ff, #0000ff)'; "
            "style.backgroundSize = '%dpx %dpx';                          "
            "style.backgroundPosition = '50%% %dpx';                      "
            "style.backgroundRepeat = 'no-repeat';                        ",
            box_size.height() + kBoxOffsetHeight, box_size.width(),
            box_size.height(), kBoxOffsetHeight)));

    // Force frame size: The offset of the blue box within the frame shouldn't
    // change during screenshotting. This verifies that the page doesn't observe
    // a change in frame size as a side effect of screenshotting.

    params = std::make_unique<base::DictionaryValue>();
    params->SetInteger("width", frame_size.width());
    params->SetInteger("height", frame_size.height());
    params->SetDouble("deviceScaleFactor", device_scale_factor);
    params->SetBoolean("mobile", false);
    SendCommand("Emulation.setDeviceMetricsOverride", std::move(params));

    // Resize frame to scaled blue box size.
    gfx::RectF clip;
    clip.set_width(box_size.width());
    clip.set_height(box_size.height());
    clip.set_x((frame_size.width() - box_size.width()) / 2.);
    clip.set_y(kBoxOffsetHeight);

    // Capture screenshot and verify that it is indeed blue.
    SkBitmap expected_bitmap;
    expected_bitmap.allocN32Pixels(scaled_box_size.width(),
                                   scaled_box_size.height());
    expected_bitmap.eraseColor(SkColorSetRGB(0x00, 0x00, 0xff));

    // If the device scale factor is 0,
    // get the original device scale factor to compare with
    if (!device_scale_factor) {
      device_scale_factor = display::Screen::GetScreen()
                                ->GetPrimaryDisplay()
                                .device_scale_factor();
    }

    CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG,
                                  true, device_scale_factor, clip,
                                  screenshot_scale);

    // Reset for next screenshot.
    SendCommand("Emulation.clearDeviceMetricsOverride", nullptr);
  }

 private:
#if !defined(OS_ANDROID)
  void SetUp() override {
    EnablePixelOutput();
    DevToolsProtocolTest::SetUp();
  }
#endif
};

IN_PROC_BROWSER_TEST_F(CaptureScreenshotTest,
                       CaptureScreenshotBeyondViewport_OutOfView) {
  // TODO(crbug.com/653637) This test fails consistently on low-end Android
  // devices.
  if (base::SysInfo::IsLowEndDevice())
    return;

  // Load dummy page before getting the window size.
  shell()->LoadURL(GURL("data:text/html,"));
  gfx::Size window_size =
      static_cast<RenderWidgetHostViewBase*>(
          shell()->web_contents()->GetRenderWidgetHostView())
          ->GetCompositorViewportPixelSize();

  // Make a page a bit bigger than the view to force scrollbars to be shown.
  float content_height = window_size.height() + 10;
  float content_width = window_size.width() + 10;

  shell()->LoadURL(
      GURL("data:text/html,<body "
           "style='background:%23123456;height:" +
           base::NumberToString(content_height) +
           "px;width:" + base::NumberToString(content_width) + "px'></body>"));

  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
  Attach();

  // Generate expected screenshot without any scrollbars.
  SkBitmap expected_bitmap;
  expected_bitmap.allocN32Pixels(content_width, content_height);
  expected_bitmap.eraseColor(SkColorSetRGB(0x12, 0x34, 0x56));

  float device_scale_factor =
      display::Screen::GetScreen()->GetPrimaryDisplay().device_scale_factor();

  // Verify there are no scrollbars on the screenshot.
  CaptureScreenshotAndCompareTo(
      expected_bitmap, ScreenshotEncoding::PNG, true, device_scale_factor,
      gfx::RectF(0, 0, content_width, content_height), 1, true);
}

// ChromeOS and Android has fading out scrollbars, which makes the test flacky.
// TODO(crbug.com/1150059) Android has a problem with changing scale.
// TODO(crbug.com/1147911) Android Lollipop has a problem with capturing
// screenshot.
// TODO(crbug.com/1156767) Flaky on linux-lacros-tester-rel
#if defined(OS_ANDROID) || BUILDFLAG(IS_CHROMEOS_ASH) || \
    BUILDFLAG(IS_CHROMEOS_LACROS)
#define MAYBE_CaptureScreenshotBeyondViewport_InnerScrollbarsAreShown \
  DISABLED_CaptureScreenshotBeyondViewport_InnerScrollbarsAreShown
#else
#define MAYBE_CaptureScreenshotBeyondViewport_InnerScrollbarsAreShown \
  CaptureScreenshotBeyondViewport_InnerScrollbarsAreShown
#endif
IN_PROC_BROWSER_TEST_F(
    CaptureScreenshotTest,
    MAYBE_CaptureScreenshotBeyondViewport_InnerScrollbarsAreShown) {
  // TODO(crbug.com/653637) This test fails consistently on low-end Android
  // devices.
  if (base::SysInfo::IsLowEndDevice())
    return;

  shell()->LoadURL(GURL(
      "data:text/html,<body><div style='width: 50px; height: 50px; overflow: "
      "scroll;'><h3>test</h3><h3>test</h3><h3>test</h3></div></body>"));

  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
  Attach();

  // We compare against the actual physical backing size rather than the
  // view size, because the view size is stored adjusted for DPI and only in
  // integer precision.
  gfx::Size view_size = static_cast<RenderWidgetHostViewBase*>(
                            shell()->web_contents()->GetRenderWidgetHostView())
                            ->GetCompositorViewportPixelSize();

  // Capture a screenshot not "form surface", meaning without emulation and
  // without changing preferences, as-is.
  std::unique_ptr<SkBitmap> expected_bitmap =
      CaptureScreenshot(ScreenshotEncoding::PNG, false);

  float device_scale_factor =
      display::Screen::GetScreen()->GetPrimaryDisplay().device_scale_factor();

  // Compare the captured screenshot with one made "from_surface", where actual
  // scrollbar magic happened, and verify it looks the same, meaning the
  // internal scrollbars are rendered.
  CaptureScreenshotAndCompareTo(
      *expected_bitmap, ScreenshotEncoding::PNG, true, device_scale_factor,
      gfx::RectF(0, 0, view_size.width(), view_size.height()), 1, true);
}

// ChromeOS and Android don't support software compositing.
#if !BUILDFLAG(IS_CHROMEOS_ASH) && !defined(OS_ANDROID)

class NoGPUCaptureScreenshotTest : public CaptureScreenshotTest {
  void SetUpCommandLine(base::CommandLine* command_line) override {
    CaptureScreenshotTest::SetUpCommandLine(command_line);
    command_line->AppendSwitch(switches::kDisableGpuCompositing);
  }
};

// Tests that large screenshots are composited fine with software compositor.
// Regression test for https://crbug.com/1137291.
IN_PROC_BROWSER_TEST_F(NoGPUCaptureScreenshotTest, LargeScreenshot) {
  // This test fails consistently on low-end Android devices.
  // See crbug.com/653637.
  // TODO(eseckler): Reenable with error limit if necessary.
  if (base::SysInfo::IsLowEndDevice())
    return;
  // If disabling software compositing is disabled by the test caller,
  // we're out of luck.
  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kDisableSoftwareCompositingFallback)) {
    return;
  }
  shell()->LoadURL(
      GURL("data:text/html,"
           "<style>body,html { padding: 0; margin: 0; }</style>"
           "<div style='width: 1250px; height: 8440px; "
           "     background: linear-gradient(red, blue)'></div>"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
  Attach();

  auto params = std::make_unique<base::DictionaryValue>();
  params->SetInteger("width", 1280);
  params->SetInteger("height", 8440);
  params->SetDouble("deviceScaleFactor", 1);
  params->SetBoolean("mobile", false);
  SendCommand("Emulation.setDeviceMetricsOverride", std::move(params));
  auto bitmap = CaptureScreenshot(ScreenshotEncoding::PNG, true,
                                  gfx::RectF(0, 0, 1280, 8440), 1);
  SendCommand("Emulation.clearDeviceMetricsOverride", nullptr);

  EXPECT_EQ(1280, bitmap->width());
  EXPECT_EQ(8440, bitmap->height());

  // Top-left is red-ish.
  SkColor top_left = bitmap->getColor(0, 0);
  EXPECT_GT(static_cast<int>(SkColorGetR(top_left)), 128);
  EXPECT_LT(static_cast<int>(SkColorGetB(top_left)), 128);

  // Bottom-left is blue-ish.
  SkColor bottom_left = bitmap->getColor(0, 8339);
  EXPECT_LT(static_cast<int>(SkColorGetR(bottom_left)), 128);
  EXPECT_GT(static_cast<int>(SkColorGetB(bottom_left)), 128);
}

#endif  // !BUILDFLAG(IS_CHROMEOS_ASH) && !defined(OS_ANDROID)

// Setting frame size (through RWHV) is not supported on Android.
// This test seems to be very flaky on all platforms: https://crbug.com/801173
IN_PROC_BROWSER_TEST_F(CaptureScreenshotTest, DISABLED_CaptureScreenshotArea) {
  static const gfx::Size kFrameSize(800, 600);

  shell()->LoadURL(GURL("about:blank"));
  Attach();

  // Test capturing a subarea inside the emulated frame at different scales.
  PlaceAndCaptureBox(kFrameSize, gfx::Size(100, 200), 1.0, 1.);
  PlaceAndCaptureBox(kFrameSize, gfx::Size(100, 200), 2.0, 1.);
  PlaceAndCaptureBox(kFrameSize, gfx::Size(100, 200), 0.5, 1.);

  // Check non-1 device scale factor.
  PlaceAndCaptureBox(kFrameSize, gfx::Size(100, 200), 1.0, 2.);
  // Ensure not emulating device scale factor works.
  PlaceAndCaptureBox(kFrameSize, gfx::Size(100, 200), 1.0, 0.);
}

// Verifies that setDefaultBackgroundColorOverride changes the background color
// of a page that does not specify one.
IN_PROC_BROWSER_TEST_F(CaptureScreenshotTest,
                       SetDefaultBackgroundColorOverride) {
  if (base::SysInfo::IsLowEndDevice())
    return;

  shell()->LoadURL(GURL("about:blank"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
  Attach();

  // Override background to blue.
  base::DictionaryValue color;
  color.SetInteger("r", 0x00);
  color.SetInteger("g", 0x00);
  color.SetInteger("b", 0xff);
  color.SetDouble("a", 1.0);
  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetKey("color", std::move(color));
  SendCommand("Emulation.setDefaultBackgroundColorOverride", std::move(params));

  SkBitmap expected_bitmap;
  // We compare against the actual physical backing size rather than the
  // view size, because the view size is stored adjusted for DPI and only in
  // integer precision.
  gfx::Size view_size = static_cast<RenderWidgetHostViewBase*>(
                            shell()->web_contents()->GetRenderWidgetHostView())
                            ->GetCompositorViewportPixelSize();
  expected_bitmap.allocN32Pixels(view_size.width(), view_size.height());
  expected_bitmap.eraseColor(SkColorSetRGB(0x00, 0x00, 0xff));
  CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG, true);

  // Tests that resetting Emulation.setDefaultBackgroundColorOverride
  // clears the background color override.
  SendCommand("Emulation.setDefaultBackgroundColorOverride",
              std::make_unique<base::DictionaryValue>());
  expected_bitmap.eraseColor(SK_ColorWHITE);
  CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG, true);
}

// Verifies that setDefaultBackgroundColor and captureScreenshot support a fully
// and semi-transparent background, and that setDeviceMetricsOverride doesn't
// affect it.
IN_PROC_BROWSER_TEST_F(CaptureScreenshotTest, TransparentScreenshots) {
  if (base::SysInfo::IsLowEndDevice())
    return;

  shell()->LoadURL(
      GURL("data:text/html,<body style='background:transparent'></body>"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
  Attach();

  auto params = std::make_unique<base::DictionaryValue>();
  {
    // Override background to fully transparent.
    base::DictionaryValue color;
    color.SetInteger("r", 0);
    color.SetInteger("g", 0);
    color.SetInteger("b", 0);
    color.SetDouble("a", 0);
    params->SetKey("color", std::move(color));
  }
  SendCommand("Emulation.setDefaultBackgroundColorOverride", std::move(params));

  SkBitmap expected_bitmap;
  // We compare against the actual physical backing size rather than the
  // view size, because the view size is stored adjusted for DPI and only in
  // integer precision.
  gfx::Size view_size = static_cast<RenderWidgetHostViewBase*>(
                            shell()->web_contents()->GetRenderWidgetHostView())
                            ->GetCompositorViewportPixelSize();
  expected_bitmap.allocN32Pixels(view_size.width(), view_size.height());
  expected_bitmap.eraseColor(SK_ColorTRANSPARENT);
  CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG, true);

#if !defined(OS_ANDROID)
  float device_scale_factor =
      display::Screen::GetScreen()->GetPrimaryDisplay().device_scale_factor();

  // Check that device emulation does not affect the transparency.
  params = std::make_unique<base::DictionaryValue>();
  params->SetInteger("width", view_size.width());
  params->SetInteger("height", view_size.height());
  params->SetDouble("deviceScaleFactor", 0);
  params->SetBoolean("mobile", false);
  params->SetBoolean("fitWindow", false);
  SendCommand("Emulation.setDeviceMetricsOverride", std::move(params));
  CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG, true,
                                device_scale_factor);
  SendCommand("Emulation.clearDeviceMetricsOverride", nullptr);
#endif  // !defined(OS_ANDROID)

  {
    // Override background to a semi-transparent color.
    base::DictionaryValue color;
    color.SetInteger("r", 255);
    color.SetInteger("g", 0);
    color.SetInteger("b", 0);
    color.SetDouble("a", 1.0 / 255 * 16);
    params = std::make_unique<base::DictionaryValue>();
    params->SetKey("color", std::move(color));
  }
  SendCommand("Emulation.setDefaultBackgroundColorOverride", std::move(params));

  expected_bitmap.eraseColor(SkColorSetARGB(16, 255, 0, 0));
  CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG, true);

#if !defined(OS_ANDROID)
  // Check that device emulation does not affect the transparency.
  params = std::make_unique<base::DictionaryValue>();
  params->SetInteger("width", view_size.width());
  params->SetInteger("height", view_size.height());
  params->SetDouble("deviceScaleFactor", 0);
  params->SetBoolean("mobile", false);
  params->SetBoolean("fitWindow", false);
  SendCommand("Emulation.setDeviceMetricsOverride", std::move(params));
  CaptureScreenshotAndCompareTo(expected_bitmap, ScreenshotEncoding::PNG, true,
                                device_scale_factor);
  SendCommand("Emulation.clearDeviceMetricsOverride", nullptr);
#endif  // !defined(OS_ANDROID)
}

#if defined(OS_ANDROID)
// Disabled, see http://crbug.com/469947.
IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, DISABLED_SynthesizePinchGesture) {
  GURL test_url = GetTestUrl("devtools", "synthetic_gesture_tests.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  int old_width = EvalJs(shell(), "window.innerWidth").ExtractInt();

  int old_height = EvalJs(shell(), "window.innerHeight").ExtractInt();

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetInteger("x", old_width / 2);
  params->SetInteger("y", old_height / 2);
  params->SetDouble("scaleFactor", 2.0);
  SendCommand("Input.synthesizePinchGesture", std::move(params));

  int new_width = EvalJs(shell(), "window.innerWidth").ExtractInt();
  ASSERT_DOUBLE_EQ(2.0, static_cast<double>(old_width) / new_width);

  int new_height = EvalJs(shell(), "window.innerHeight").ExtractInt();
  ASSERT_DOUBLE_EQ(2.0, static_cast<double>(old_height) / new_height);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, DISABLED_SynthesizeScrollGesture) {
  GURL test_url = GetTestUrl("devtools", "synthetic_gesture_tests.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  ASSERT_EQ(0, EvalJs(shell(), "document.body.scrollTop"));

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetInteger("x", 0);
  params->SetInteger("y", 0);
  params->SetInteger("xDistance", 0);
  params->SetInteger("yDistance", -100);
  SendCommand("Input.synthesizeScrollGesture", std::move(params));

  ASSERT_EQ(100, EvalJs(shell(), "document.body.scrollTop"));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, DISABLED_SynthesizeTapGesture) {
  GURL test_url = GetTestUrl("devtools", "synthetic_gesture_tests.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  ASSERT_EQ(0, EvalJs(shell(), "document.body.scrollTop"));

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetInteger("x", 16);
  params->SetInteger("y", 16);
  params->SetString("gestureSourceType", "touch");
  SendCommand("Input.synthesizeTapGesture", std::move(params));

  // The link that we just tapped should take us to the bottom of the page. The
  // new value of |document.body.scrollTop| will depend on the screen dimensions
  // of the device that we're testing on, but in any case it should be greater
  // than 0.
  ASSERT_GT(EvalJs(shell(), "document.body.scrollTop").ExtractInt(), 0);
}
#endif  // defined(OS_ANDROID)

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, PageCrash) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  std::unique_ptr<base::DictionaryValue> command_params;
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("discover", true);
  SendCommand("Target.setDiscoverTargets", std::move(command_params));

  std::string target_id;
  std::unique_ptr<base::DictionaryValue> params;
  std::string type;
  params = WaitForNotification("Target.targetCreated", true);
  ASSERT_TRUE(params->GetString("targetInfo.type", &type));
  ASSERT_EQ(type, "page");
  ASSERT_TRUE(params->GetString("targetInfo.targetId", &target_id));

  ClearNotifications();
  {
    content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
    SendCommand("Page.crash", nullptr, false);
    params = WaitForNotification("Target.targetCrashed", true);
  }
  ASSERT_TRUE(params);
  std::string crashed_target_id;
  ASSERT_TRUE(params->GetString("targetId", &crashed_target_id));
  EXPECT_EQ(target_id, crashed_target_id);

  ClearNotifications();
  shell()->LoadURL(test_url);
  WaitForNotification("Inspector.targetReloadedAfterCrash", true);
}

IN_PROC_BROWSER_TEST_F(SitePerProcessDevToolsProtocolTest, PageCrashInFrame) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url =
      embedded_test_server()->GetURL("/devtools/page-with-oopif.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  std::unique_ptr<base::DictionaryValue> command_params;
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("discover", true);
  SendCommand("Target.setDiscoverTargets", std::move(command_params));

  std::string frame_target_id;
  std::unique_ptr<base::DictionaryValue> params;
  for (int targetCount = 1; true; targetCount++) {
    params = WaitForNotification("Target.targetCreated", true);
    std::string type;
    ASSERT_TRUE(params->GetString("targetInfo.type", &type));
    if (type == "iframe") {
      ASSERT_TRUE(params->GetString("targetInfo.targetId", &frame_target_id));
      break;
    }
    ASSERT_LT(targetCount, 2);
  }

  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetString("targetId", frame_target_id);
  command_params->SetBoolean("flatten", true);
  base::DictionaryValue* result =
      SendCommand("Target.attachToTarget", std::move(command_params));
  ASSERT_NE(nullptr, result);
  std::string session_id;
  ASSERT_TRUE(result->GetString("sessionId", &session_id));

  ClearNotifications();
  {
    content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
    SendSessionCommand("Page.crash", nullptr, session_id, false);
    params = WaitForNotification("Target.targetCrashed", true);
  }
  ASSERT_TRUE(params);
  std::string crashed_target_id;
  ASSERT_TRUE(params->GetString("targetId", &crashed_target_id));
  EXPECT_EQ(frame_target_id, crashed_target_id);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, PageCrashClearsPendingCommands) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  std::unique_ptr<base::DictionaryValue> command_params;
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("discover", true);

  SendCommand("Target.setDiscoverTargets", std::move(command_params));

  std::string target_id;
  std::unique_ptr<base::DictionaryValue> params;
  std::string type;
  params = WaitForNotification("Target.targetCreated", true);
  ASSERT_TRUE(params->GetString("targetInfo.type", &type));
  ASSERT_EQ(type, "page");
  ASSERT_TRUE(params->GetString("targetInfo.targetId", &target_id));

  SendCommand("Debugger.enable", nullptr, true);

  params = std::make_unique<base::DictionaryValue>();
  params->SetString("expression", "console.log('first page'); debugger");
  SendCommand("Runtime.evaluate", std::move(params), false);
  WaitForNotification("Debugger.paused");

  {
    content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
    shell()->LoadURL(GURL(blink::kChromeUICrashURL));
    params = WaitForNotification("Target.targetCrashed", true);
  }
  ClearNotifications();
  SendCommand("Page.reload", std::move(params), false);
  WaitForNotification("Inspector.targetReloadedAfterCrash", true);
  params = std::make_unique<base::DictionaryValue>();
  params->SetString("expression", "console.log('second page')");
  SendCommand("Runtime.evaluate", std::move(params), true);
  EXPECT_THAT(console_messages_, ElementsAre("first page", "second page"));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, NavigationPreservesMessages) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();
  SendCommand("Page.enable", nullptr, false);

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  test_url = GetTestUrl("devtools", "navigation.html");
  params->SetString("url", test_url.spec());
  TestNavigationObserver navigation_observer(shell()->web_contents());
  SendCommand("Page.navigate", std::move(params), true);
  navigation_observer.Wait();

  bool enough_results = result_ids_.size() >= 2u;
  EXPECT_TRUE(enough_results);
  if (enough_results) {
    EXPECT_EQ(1, result_ids_[0]);  // Page.enable
    EXPECT_EQ(2, result_ids_[1]);  // Page.navigate
  }

  enough_results = notifications_.size() >= 1u;
  EXPECT_TRUE(enough_results);
  bool found_frame_notification = false;
  for (const std::string& notification : notifications_) {
    if (notification == "Page.frameStartedLoading")
      found_frame_notification = true;
  }
  EXPECT_TRUE(found_frame_notification);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, CrossSiteNoDetach) {
  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());

  GURL test_url1 = embedded_test_server()->GetURL(
      "A.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url1, 1);
  Attach();

  GURL test_url2 = embedded_test_server()->GetURL(
      "B.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url2, 1);

  EXPECT_EQ(0u, notifications_.size());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, CrossSiteNavigation) {
  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());

  GURL test_url1 =
      embedded_test_server()->GetURL("A.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url1, 1);
  Attach();
  SendCommand("Page.enable", nullptr, false);

  GURL test_url2 =
      embedded_test_server()->GetURL("B.com", "/devtools/navigation.html");
  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("url", test_url2.spec());
  base::DictionaryValue* result =
      SendCommand("Page.navigate", std::move(params));
  std::string frame_id;
  EXPECT_TRUE(result->GetString("frameId", &frame_id));

  params = WaitForNotification("Page.frameStoppedLoading", true);
  std::string stopped_id;
  EXPECT_TRUE(params->GetString("frameId", &stopped_id));

  EXPECT_EQ(stopped_id, frame_id);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, CrossSiteCrash) {
  set_agent_host_can_close();
  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());

  GURL test_url1 =
      embedded_test_server()->GetURL("A.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url1, 1);
  Attach();
  CrashTab(shell()->web_contents());

  GURL test_url2 =
      embedded_test_server()->GetURL("B.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url2, 1);

  // Should not crash at this point.
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, InspectorTargetCrashedNavigate) {
  set_agent_host_can_close();
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL url_a = embedded_test_server()->GetURL("a.com", "/title1.html");

  NavigateToURLBlockUntilNavigationsComplete(shell(), url_a, 1);
  Attach();
  SendCommand("Inspector.enable", nullptr);

  {
    ScopedAllowRendererCrashes scoped_allow_renderer_crashes(shell());
    shell()->LoadURL(GURL(blink::kChromeUICrashURL));
    WaitForNotification("Inspector.targetCrashed");
  }

  ClearNotifications();
  shell()->LoadURL(url_a);
  WaitForNotification("Inspector.targetReloadedAfterCrash", true);
}

// Same as in DevToolsProtocolTest.InspectorTargetCrashedNavigate, but with a
// cross-process navigation at the end.
// Regression test for https://crbug.com/990315
IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest,
                       InspectorTargetCrashedNavigateCrossProcess) {
  set_agent_host_can_close();
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL url_a = embedded_test_server()->GetURL("a.com", "/title1.html");
  GURL url_b = embedded_test_server()->GetURL("b.com", "/title1.html");

  NavigateToURLBlockUntilNavigationsComplete(shell(), url_a, 1);
  Attach();
  SendCommand("Inspector.enable", nullptr);

  {
    ScopedAllowRendererCrashes scoped_allow_renderer_crashes(shell());
    shell()->LoadURL(GURL(blink::kChromeUICrashURL));
    WaitForNotification("Inspector.targetCrashed");
  }

  ClearNotifications();
  shell()->LoadURL(url_b);
  WaitForNotification("Inspector.targetReloadedAfterCrash", true);
}

#if defined(OS_ANDROID)
#define MAYBE_InspectorTargetCrashedReload DISABLED_InspectorTargetCrashedReload
#else
#define MAYBE_InspectorTargetCrashedReload InspectorTargetCrashedReload
#endif
IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest,
                       MAYBE_InspectorTargetCrashedReload) {
  set_agent_host_can_close();
  GURL url = GURL("data:text/html,<body></body>");
  NavigateToURLBlockUntilNavigationsComplete(shell(), url, 1);
  Attach();
  SendCommand("Inspector.enable", nullptr);

  {
    ScopedAllowRendererCrashes scoped_allow_renderer_crashes(shell());
    shell()->LoadURL(GURL(blink::kChromeUICrashURL));
    WaitForNotification("Inspector.targetCrashed");
  }

  ClearNotifications();
  SendCommand("Page.reload", nullptr, false);
  WaitForNotification("Inspector.targetReloadedAfterCrash", true);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, ReconnectPreservesState) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);

  Shell* second = CreateBrowser();
  NavigateToURLBlockUntilNavigationsComplete(second, test_url, 1);

  Attach();
  SendCommand("Runtime.enable", nullptr);

  agent_host_->DisconnectWebContents();
  agent_host_->ConnectWebContents(second->web_contents());
  WaitForNotification("Runtime.executionContextsCleared");
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, CrossSitePauseInBeforeUnload) {
  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());

  NavigateToURLBlockUntilNavigationsComplete(shell(),
      embedded_test_server()->GetURL("A.com", "/devtools/navigation.html"), 1);
  Attach();
  SendCommand("Debugger.enable", nullptr);

  ASSERT_TRUE(content::ExecJs(
      shell(),
      "window.onbeforeunload = function() { debugger; return null; }"));

  shell()->LoadURL(
      embedded_test_server()->GetURL("B.com", "/devtools/navigation.html"));
  WaitForNotification("Debugger.paused");
  TestNavigationObserver observer(shell()->web_contents(), 1);
  SendCommand("Debugger.resume", nullptr);
  observer.Wait();
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, InspectDuringFrameSwap) {
  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());

  GURL test_url1 =
      embedded_test_server()->GetURL("A.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url1, 1);

  ShellAddedObserver new_shell_observer;
  EXPECT_TRUE(ExecJs(shell(), "window.open('about:blank','foo');"));
  Shell* new_shell = new_shell_observer.GetShell();
  EXPECT_TRUE(new_shell->web_contents()->HasOpener());

  agent_host_ = DevToolsAgentHost::GetOrCreateFor(new_shell->web_contents());
  agent_host_->AttachClient(this);

  GURL test_url2 =
      embedded_test_server()->GetURL("B.com", "/devtools/navigation.html");

  // After this navigation, if the bug exists, the process will crash.
  NavigateToURLBlockUntilNavigationsComplete(new_shell, test_url2, 1);

  // Ensure that the A.com process is still alive by executing a script in the
  // original tab.
  //
  // TODO(alexmos, nasko):  A better way to do this is to navigate the original
  // tab to another site, watch for process exit, and check whether there was a
  // crash. However, currently there's no way to wait for process exit
  // regardless of whether it's a crash or not.  RenderProcessHostWatcher
  // should be fixed to support waiting on both WATCH_FOR_PROCESS_EXIT and
  // WATCH_FOR_HOST_DESTRUCTION, and then used here.
  EXPECT_EQ(true, EvalJs(shell(), "!!window.open('', 'foo');"));

  GURL test_url3 =
      embedded_test_server()->GetURL("A.com", "/devtools/navigation.html");

  // After this navigation, if the bug exists, the process will crash.
  NavigateToURLBlockUntilNavigationsComplete(new_shell, test_url3, 1);

  // Ensure that the A.com process is still alive by executing a script in the
  // original tab.
  EXPECT_EQ(true, EvalJs(shell(), "!!window.open('', 'foo');"));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, DoubleCrash) {
  set_agent_host_can_close();
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  SendCommand("ServiceWorker.enable", nullptr);
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  CrashTab(shell()->web_contents());
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  CrashTab(shell()->web_contents());
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  // Should not crash at this point.
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, ReloadBlankPage) {
  Shell* window =  Shell::CreateNewWindow(
      shell()->web_contents()->GetBrowserContext(),
      GURL("javascript:x=1"),
      nullptr,
      gfx::Size());
  WaitForLoadStop(window->web_contents());
  Attach();
  SendCommand("Page.reload", nullptr, false);
  // Should not crash at this point.
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, EvaluateInBlankPage) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("expression", "window");
  SendCommand("Runtime.evaluate", std::move(params), true);
  EXPECT_FALSE(result_->HasKey("exceptionDetails"));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest,
    EvaluateInBlankPageAfterNavigation) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("expression", "window");
  SendCommand("Runtime.evaluate", std::move(params), true);
  EXPECT_FALSE(result_->HasKey("exceptionDetails"));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, JavaScriptDialogNotifications) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  TestJavaScriptDialogManager dialog_manager;
  WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
  wc->SetDelegate(&dialog_manager);
  SendCommand("Page.enable", nullptr, true);

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("expression", "prompt('hello?', 'default')");
  SendCommand("Runtime.evaluate", std::move(params), false);

  params = WaitForNotification("Page.javascriptDialogOpening");
  std::string url;
  EXPECT_TRUE(params->GetString("url", &url));
  EXPECT_EQ("about:blank", url);
  std::string message;
  EXPECT_TRUE(params->GetString("message", &message));
  EXPECT_EQ("hello?", message);
  std::string type;
  EXPECT_TRUE(params->GetString("type", &type));
  EXPECT_EQ("prompt", type);
  std::string default_prompt;
  EXPECT_TRUE(params->GetString("defaultPrompt", &default_prompt));
  EXPECT_EQ("default", default_prompt);

  params = std::make_unique<base::DictionaryValue>();
  params->SetBoolean("accept", true);
  params->SetString("promptText", "hi!");
  SendCommand("Page.handleJavaScriptDialog", std::move(params), false);

  params = WaitForNotification("Page.javascriptDialogClosed", true);
  absl::optional<bool> result = params->FindBoolPath("result");
  EXPECT_TRUE(result);
  EXPECT_TRUE(*result);

  EXPECT_TRUE(dialog_manager.is_handled());

  std::string input;
  EXPECT_TRUE(params->GetString("userInput", &input));
  EXPECT_EQ("hi!", input);
  wc->SetDelegate(nullptr);
  wc->SetJavaScriptDialogManagerForTesting(nullptr);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, JavaScriptDialogInterop) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  TestJavaScriptDialogManager dialog_manager;
  WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
  wc->SetDelegate(&dialog_manager);
  SendCommand("Page.enable", nullptr, true);
  SendCommand("Runtime.enable", nullptr, true);

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("expression", "alert('42')");
  SendCommand("Runtime.evaluate", std::move(params), false);
  WaitForNotification("Page.javascriptDialogOpening");

  dialog_manager.Handle();
  WaitForNotification("Page.javascriptDialogClosed", true);
  wc->SetDelegate(nullptr);
  wc->SetJavaScriptDialogManagerForTesting(nullptr);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, PageDisableWithOpenedDialog) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  TestJavaScriptDialogManager dialog_manager;
  WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
  wc->SetDelegate(&dialog_manager);

  SendCommand("Page.enable", nullptr, true);
  SendCommand("Runtime.enable", nullptr, true);

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("expression", "alert('42')");
  SendCommand("Runtime.evaluate", std::move(params), false);
  WaitForNotification("Page.javascriptDialogOpening");
  EXPECT_TRUE(wc->IsJavaScriptDialogShowing());

  EXPECT_FALSE(dialog_manager.is_handled());
  SendCommand("Page.disable", nullptr, false);
  EXPECT_TRUE(wc->IsJavaScriptDialogShowing());
  EXPECT_FALSE(dialog_manager.is_handled());
  dialog_manager.Handle();
  EXPECT_FALSE(wc->IsJavaScriptDialogShowing());

  params = std::make_unique<base::DictionaryValue>();
  params->SetString("expression", "42");
  SendCommand("Runtime.evaluate", std::move(params), true);

  wc->SetDelegate(nullptr);
  wc->SetJavaScriptDialogManagerForTesting(nullptr);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, PageDisableWithNoDialogManager) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
  wc->SetDelegate(nullptr);

  SendCommand("Page.enable", nullptr, true);
  SendCommand("Runtime.enable", nullptr, true);

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("expression", "alert('42');");
  SendCommand("Runtime.evaluate", std::move(params), false);
  WaitForNotification("Page.javascriptDialogOpening");
  EXPECT_TRUE(wc->IsJavaScriptDialogShowing());

  SendCommand("Page.disable", nullptr, true);
  EXPECT_FALSE(wc->IsJavaScriptDialogShowing());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, BeforeUnloadDialog) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  TestJavaScriptDialogManager dialog_manager;

  WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell()->web_contents());
  wc->SetDelegate(&dialog_manager);
  SendCommand("Runtime.enable", nullptr, true);

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());

  params = std::make_unique<base::DictionaryValue>();
  params->SetString("expression",
                    "window.onbeforeunload=()=>{return 'prompt';}");
  params->SetBoolean("userGesture", true);
  SendCommand("Runtime.evaluate", std::move(params), true);

  SendCommand("Page.enable", nullptr, true);
  SendCommand("Page.reload", nullptr, false);

  params = WaitForNotification("Page.javascriptDialogOpening", true);

  std::string url;
  EXPECT_TRUE(params->GetString("url", &url));
  EXPECT_EQ("about:blank", url);
  std::string type;
  EXPECT_TRUE(params->GetString("type", &type));
  EXPECT_EQ("beforeunload", type);

  params = std::make_unique<base::DictionaryValue>();
  params->SetBoolean("accept", true);
  SendCommand("Page.handleJavaScriptDialog", std::move(params), false);
  WaitForNotification("Page.javascriptDialogClosed", true);
  wc->SetDelegate(nullptr);
  wc->SetJavaScriptDialogManagerForTesting(nullptr);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, BrowserCreateAndCloseTarget) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  EXPECT_EQ(1u, shell()->windows().size());
  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("url", "about:blank");
  SendCommand("Target.createTarget", std::move(params), true);
  std::string target_id;
  EXPECT_TRUE(result_->GetString("targetId", &target_id));
  EXPECT_EQ(2u, shell()->windows().size());

  // TODO(eseckler): Since the RenderView is closed asynchronously, we currently
  // don't verify that the command actually closes the shell.
  params = std::make_unique<base::DictionaryValue>();
  params->SetString("targetId", target_id);
  SendCommand("Target.closeTarget", std::move(params), true);

  absl::optional<bool> success = result_->FindBoolPath("success");
  EXPECT_TRUE(success);
  EXPECT_TRUE(*success);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, BrowserGetTargets) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  SendCommand("Target.getTargets", nullptr, true);
  base::ListValue* target_infos;
  EXPECT_TRUE(result_->GetList("targetInfos", &target_infos));
  EXPECT_EQ(1u, target_infos->GetList().size());
  const base::Value& target_info_value = target_infos->GetList()[0u];
  EXPECT_TRUE(target_info_value.is_dict());
  const base::DictionaryValue& target_info =
      base::Value::AsDictionaryValue(target_info_value);
  std::string target_id, type, title, url;
  EXPECT_TRUE(target_info.GetString("targetId", &target_id));
  EXPECT_TRUE(target_info.GetString("type", &type));
  EXPECT_TRUE(target_info.GetString("title", &title));
  EXPECT_TRUE(target_info.GetString("url", &url));
  EXPECT_EQ("page", type);
  EXPECT_EQ("about:blank", title);
  EXPECT_EQ("about:blank", url);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, VirtualTimeTest) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  params->SetString("policy", "pause");
  SendCommand("Emulation.setVirtualTimePolicy", std::move(params), true);

  params = std::make_unique<base::DictionaryValue>();
  params->SetString("expression",
                    "setTimeout(function(){console.log('before')}, 999);"
                    "setTimeout(function(){console.log('at')}, 1000);"
                    "setTimeout(function(){console.log('after')}, 1001);");
  SendCommand("Runtime.evaluate", std::move(params), true);

  // Let virtual time advance for one second.
  params = std::make_unique<base::DictionaryValue>();
  params->SetString("policy", "advance");
  params->SetInteger("budget", 1000);
  SendCommand("Emulation.setVirtualTimePolicy", std::move(params), true);

  WaitForNotification("Emulation.virtualTimeBudgetExpired");

  params = std::make_unique<base::DictionaryValue>();
  params->SetString("expression", "console.log('done')");
  SendCommand("Runtime.evaluate", std::move(params), true);

  // The third timer should not fire.
  EXPECT_THAT(console_messages_, ElementsAre("before", "at", "done"));

  // Let virtual time advance for another second, which should make the third
  // timer fire.
  params = std::make_unique<base::DictionaryValue>();
  params->SetString("policy", "advance");
  params->SetInteger("budget", 1000);
  SendCommand("Emulation.setVirtualTimePolicy", std::move(params), true);

  WaitForNotification("Emulation.virtualTimeBudgetExpired");

  EXPECT_THAT(console_messages_, ElementsAre("before", "at", "done", "after"));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, CertificateError) {
  net::EmbeddedTestServer https_server(net::EmbeddedTestServer::TYPE_HTTPS);
  https_server.SetSSLConfig(net::EmbeddedTestServer::CERT_EXPIRED);
  https_server.ServeFilesFromSourceDirectory(GetTestDataFilePath());
  ASSERT_TRUE(https_server.Start());
  GURL test_url = https_server.GetURL("/devtools/navigation.html");
  std::unique_ptr<base::DictionaryValue> params;
  std::unique_ptr<base::DictionaryValue> command_params;
  absl::optional<int> eventId;

  shell()->LoadURL(GURL("about:blank"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));

  Attach();
  SendCommand("Network.enable", nullptr, true);
  SendCommand("Security.enable", nullptr, false);
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("override", true);
  SendCommand("Security.setOverrideCertificateErrors",
              std::move(command_params), true);

  // Test cancel.
  SendCommand("Network.clearBrowserCache", nullptr, true);
  SendCommand("Network.clearBrowserCookies", nullptr, true);
  TestNavigationObserver cancel_observer(shell()->web_contents(), 1);
  shell()->LoadURL(test_url);
  params = WaitForNotification("Security.certificateError", false);
  EXPECT_TRUE(shell()->web_contents()->GetController().GetPendingEntry());
  EXPECT_EQ(
      test_url,
      shell()->web_contents()->GetController().GetPendingEntry()->GetURL());
  eventId = params->FindIntKey("eventId");
  ASSERT_TRUE(eventId);
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetInteger("eventId", *eventId);
  command_params->SetString("action", "cancel");
  SendCommand("Security.handleCertificateError", std::move(command_params),
              false);
  cancel_observer.Wait();
  EXPECT_FALSE(shell()->web_contents()->GetController().GetPendingEntry());
  EXPECT_EQ(GURL("about:blank"), shell()
                                     ->web_contents()
                                     ->GetController()
                                     .GetLastCommittedEntry()
                                     ->GetURL());

  // Test continue.
  SendCommand("Network.clearBrowserCache", nullptr, true);
  SendCommand("Network.clearBrowserCookies", nullptr, true);
  TestNavigationObserver continue_observer(shell()->web_contents(), 1);
  shell()->LoadURL(test_url);
  params = WaitForNotification("Security.certificateError", false);
  eventId = params->FindIntKey("eventId");
  EXPECT_TRUE(eventId);
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetInteger("eventId", *eventId);
  command_params->SetString("action", "continue");
  SendCommand("Security.handleCertificateError", std::move(command_params),
              false);
  WaitForNotification("Network.loadingFinished", true);
  continue_observer.Wait();
  EXPECT_EQ(test_url, shell()
                          ->web_contents()
                          ->GetController()
                          .GetLastCommittedEntry()
                          ->GetURL());

  // Reset override.
  SendCommand("Security.disable", nullptr, true);

  // Test ignoring all certificate errors.
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("ignore", true);
  SendCommand("Security.setIgnoreCertificateErrors", std::move(command_params),
              true);

  SendCommand("Network.clearBrowserCache", nullptr, true);
  SendCommand("Network.clearBrowserCookies", nullptr, true);
  TestNavigationObserver continue_observer2(shell()->web_contents(), 1);
  shell()->LoadURL(test_url);
  WaitForNotification("Network.loadingFinished", true);
  continue_observer2.Wait();
  EXPECT_EQ(test_url, shell()
                          ->web_contents()
                          ->GetController()
                          .GetLastCommittedEntry()
                          ->GetURL());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest,
                       CertificateErrorRequestInterception) {
  net::EmbeddedTestServer https_server(net::EmbeddedTestServer::TYPE_HTTPS);
  https_server.SetSSLConfig(net::EmbeddedTestServer::CERT_EXPIRED);
  https_server.ServeFilesFromSourceDirectory(GetTestDataFilePath());
  ASSERT_TRUE(https_server.Start());
  GURL test_url = https_server.GetURL("/devtools/navigation.html");

  shell()->LoadURL(GURL("about:blank"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));

  Attach();
  SendCommand("Network.enable", nullptr, true);
  SendCommand("Security.enable", nullptr, false);
  SendCommand("Network.setRequestInterception",
              base::JSONReader::ReadDeprecated(
                  "{\"patterns\": [{\"urlPattern\": \"*\"}]}"),
              true);

  SendCommand("Security.setIgnoreCertificateErrors",
              base::JSONReader::ReadDeprecated("{\"ignore\": true}"), true);

  SendCommand("Network.clearBrowserCache", nullptr, true);
  SendCommand("Network.clearBrowserCookies", nullptr, true);
  TestNavigationObserver continue_observer(shell()->web_contents(), 1);
  shell()->LoadURL(test_url);
  std::unique_ptr<base::DictionaryValue> params =
      WaitForNotification("Network.requestIntercepted", false);
  std::string interceptionId;
  EXPECT_TRUE(params->GetString("interceptionId", &interceptionId));
  SendCommand("Network.continueInterceptedRequest",
              base::JSONReader::ReadDeprecated("{\"interceptionId\": \"" +
                                               interceptionId + "\"}"),
              false);
  continue_observer.Wait();
  EXPECT_EQ(test_url, shell()
                          ->web_contents()
                          ->GetController()
                          .GetLastCommittedEntry()
                          ->GetURL());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, CertificateErrorBrowserTarget) {
  net::EmbeddedTestServer https_server(net::EmbeddedTestServer::TYPE_HTTPS);
  https_server.SetSSLConfig(net::EmbeddedTestServer::CERT_EXPIRED);
  https_server.ServeFilesFromSourceDirectory(GetTestDataFilePath());
  ASSERT_TRUE(https_server.Start());
  GURL test_url = https_server.GetURL("/devtools/navigation.html");
  std::unique_ptr<base::DictionaryValue> params;
  std::unique_ptr<base::DictionaryValue> command_params;

  shell()->LoadURL(GURL("about:blank"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));

  // Clear cookies and cache to avoid interference with cert error events.
  Attach();
  SendCommand("Network.enable", nullptr, true);
  SendCommand("Network.clearBrowserCache", nullptr, true);
  SendCommand("Network.clearBrowserCookies", nullptr, true);
  Detach();

  // Test that browser target can ignore cert errors.
  AttachToBrowserTarget();
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("ignore", true);
  SendCommand("Security.setIgnoreCertificateErrors", std::move(command_params),
              true);

  TestNavigationObserver continue_observer(shell()->web_contents(), 1);
  shell()->LoadURL(test_url);
  continue_observer.Wait();
  EXPECT_EQ(test_url, shell()
                          ->web_contents()
                          ->GetController()
                          .GetLastCommittedEntry()
                          ->GetURL());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, SubresourceWithCertificateError) {
  net::EmbeddedTestServer https_server(net::EmbeddedTestServer::TYPE_HTTPS);
  https_server.SetSSLConfig(net::EmbeddedTestServer::CERT_EXPIRED);
  https_server.ServeFilesFromSourceDirectory("content/test/data/devtools");
  ASSERT_TRUE(https_server.Start());
  GURL test_url = https_server.GetURL("/image.html");
  std::unique_ptr<base::DictionaryValue> params;
  std::unique_ptr<base::DictionaryValue> command_params;
  absl::optional<int> eventId;

  shell()->LoadURL(GURL("about:blank"));
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));

  Attach();
  SendCommand("Security.enable", nullptr, false);
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("override", true);
  SendCommand("Security.setOverrideCertificateErrors",
              std::move(command_params), true);

  TestNavigationObserver observer(shell()->web_contents(), 1);
  shell()->LoadURL(test_url);

  // Expect certificateError event for main frame.
  params = WaitForNotification("Security.certificateError", false);
  eventId = params->FindIntKey("eventId");
  ASSERT_TRUE(eventId);
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetInteger("eventId", *eventId);
  command_params->SetString("action", "continue");
  SendCommand("Security.handleCertificateError", std::move(command_params),
              false);

  // Expect certificateError event for image.
  params = WaitForNotification("Security.certificateError", false);
  eventId = params->FindIntKey("eventId");
  ASSERT_TRUE(eventId);
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetInteger("eventId", *eventId);
  command_params->SetString("action", "continue");
  SendCommand("Security.handleCertificateError", std::move(command_params),
              false);

  observer.Wait();
  EXPECT_EQ(test_url, shell()
                          ->web_contents()
                          ->GetController()
                          .GetLastCommittedEntry()
                          ->GetURL());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, TargetDiscovery) {
  std::string temp;
  std::set<std::string> ids;
  std::unique_ptr<base::DictionaryValue> command_params;
  std::unique_ptr<base::DictionaryValue> params;
  absl::optional<bool> is_attached;

  ASSERT_TRUE(embedded_test_server()->Start());
  GURL first_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), first_url, 1);

  GURL second_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  Shell* second = CreateBrowser();
  NavigateToURLBlockUntilNavigationsComplete(second, second_url, 1);

  Attach();
  int attached_count = 0;
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("discover", true);
  SendCommand("Target.setDiscoverTargets", std::move(command_params), true);
  params = WaitForNotification("Target.targetCreated", true);
  EXPECT_TRUE(params->GetString("targetInfo.type", &temp));
  EXPECT_EQ("page", temp);
  is_attached = params->FindBoolPath("targetInfo.attached");
  EXPECT_TRUE(is_attached);
  attached_count += *is_attached ? 1 : 0;
  EXPECT_TRUE(params->GetString("targetInfo.targetId", &temp));
  EXPECT_TRUE(ids.find(temp) == ids.end());
  ids.insert(temp);
  params = WaitForNotification("Target.targetCreated", true);
  EXPECT_TRUE(params->GetString("targetInfo.type", &temp));
  EXPECT_EQ("page", temp);
  is_attached = params->FindBoolPath("targetInfo.attached");
  EXPECT_TRUE(is_attached);
  attached_count += *is_attached ? 1 : 0;
  EXPECT_TRUE(params->GetString("targetInfo.targetId", &temp));
  EXPECT_TRUE(ids.find(temp) == ids.end());
  ids.insert(temp);
  EXPECT_TRUE(notifications_.empty());
  EXPECT_EQ(1, attached_count);

  GURL third_url = embedded_test_server()->GetURL("/devtools/navigation.html");
  Shell* third = CreateBrowser();
  NavigateToURLBlockUntilNavigationsComplete(third, third_url, 1);

  params = WaitForNotification("Target.targetCreated", true);
  EXPECT_TRUE(params->GetString("targetInfo.type", &temp));
  EXPECT_EQ("page", temp);
  EXPECT_TRUE(params->GetString("targetInfo.targetId", &temp));
  EXPECT_TRUE(ids.find(temp) == ids.end());
  is_attached = params->FindBoolPath("targetInfo.attached");
  EXPECT_TRUE(is_attached);
  EXPECT_FALSE(*is_attached);
  std::string attached_id = temp;
  ids.insert(temp);

  params = WaitForNotification("Target.targetInfoChanged", true);
  EXPECT_TRUE(params->GetString("targetInfo.url", &temp));
  EXPECT_EQ("about:blank", temp);

  params = WaitForNotification("Target.targetInfoChanged", true);
  EXPECT_TRUE(params->GetString("targetInfo.url", &temp));
  EXPECT_EQ(third_url, temp);
  EXPECT_TRUE(notifications_.empty());

  second->Close();
  second = nullptr;
  params = WaitForNotification("Target.targetDestroyed", true);
  EXPECT_TRUE(params->GetString("targetId", &temp));
  EXPECT_TRUE(ids.find(temp) != ids.end());
  ids.erase(temp);
  EXPECT_TRUE(notifications_.empty());

  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetString("targetId", attached_id);
  SendCommand("Target.attachToTarget", std::move(command_params), true);
  params = WaitForNotification("Target.targetInfoChanged", true);
  EXPECT_TRUE(params->GetString("targetInfo.targetId", &temp));
  EXPECT_EQ(attached_id, temp);
  is_attached = params->FindBoolPath("targetInfo.attached");
  EXPECT_TRUE(is_attached);
  EXPECT_TRUE(*is_attached);
  params = WaitForNotification("Target.attachedToTarget", true);
  std::string session_id;
  EXPECT_TRUE(params->GetString("sessionId", &session_id));
  EXPECT_TRUE(params->GetString("targetInfo.targetId", &temp));
  EXPECT_EQ(attached_id, temp);
  EXPECT_TRUE(notifications_.empty());

  WebContents::CreateParams create_params(
      ShellContentBrowserClient::Get()->browser_context(), nullptr);
  std::unique_ptr<content::WebContents> web_contents(
      content::WebContents::Create(create_params));
  EXPECT_TRUE(notifications_.empty());

  NavigateToURLBlockUntilNavigationsComplete(web_contents.get(), first_url, 1);
  // The notification does not come when there's no delegate.
  EXPECT_FALSE(HasExistingNotification("Target.targetCreated"));

  web_contents->SetDelegate(this);
  // Attaching a delegate causes the notification to be sent.
  params = WaitForNotification("Target.targetCreated", true);
  EXPECT_TRUE(params->GetString("targetInfo.type", &temp));
  EXPECT_EQ("page", temp);
  EXPECT_TRUE(notifications_.empty());

  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("discover", false);
  SendCommand("Target.setDiscoverTargets", std::move(command_params), true);
  EXPECT_TRUE(notifications_.empty());

  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetString("sessionId", session_id);
  SendCommand("Target.detachFromTarget", std::move(command_params), true);
  params = WaitForNotification("Target.detachedFromTarget", true);
  EXPECT_TRUE(params->GetString("sessionId", &temp));
  EXPECT_EQ(session_id, temp);
  EXPECT_TRUE(params->GetString("targetId", &temp));
  EXPECT_EQ(attached_id, temp);
  EXPECT_TRUE(notifications_.empty());
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, SetAndGetCookies) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url = embedded_test_server()->GetURL("/title1.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
  Attach();

  // Set two cookies, one of which matches the loaded URL and another that
  // doesn't.
  std::unique_ptr<base::DictionaryValue> command_params;
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetString("url", test_url.spec());
  command_params->SetString("name", "cookie_for_this_url");
  command_params->SetString("value", "mendacious");
  SendCommand("Network.setCookie", std::move(command_params), false);

  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetString("url", "https://www.chromium.org");
  command_params->SetString("name", "cookie_for_another_url");
  command_params->SetString("value", "polyglottal");
  SendCommand("Network.setCookie", std::move(command_params), false);

  // First get the cookies for just the loaded URL.
  SendCommand("Network.getCookies", nullptr, true);

  base::ListValue* cookies;
  EXPECT_TRUE(result_->HasKey("cookies"));
  EXPECT_TRUE(result_->GetList("cookies", &cookies));
  EXPECT_EQ(1u, cookies->GetList().size());

  const base::Value& cookie_value = cookies->GetList()[0];
  EXPECT_TRUE(cookie_value.is_dict());
  const base::DictionaryValue& cookie =
      base::Value::AsDictionaryValue(cookie_value);
  std::string name;
  std::string value;
  EXPECT_TRUE(cookie.GetString("name", &name));
  EXPECT_TRUE(cookie.GetString("value", &value));
  EXPECT_EQ("cookie_for_this_url", name);
  EXPECT_EQ("mendacious", value);

  // Then get all the cookies in the cookie jar.
  SendCommand("Network.getAllCookies", nullptr, true);

  EXPECT_TRUE(result_->HasKey("cookies"));
  EXPECT_TRUE(result_->GetList("cookies", &cookies));
  EXPECT_EQ(2u, cookies->GetList().size());

  // Note: the cookies will be returned in unspecified order.
  size_t found = 0;
  for (const base::Value& cookie_value : cookies->GetList()) {
    EXPECT_TRUE(cookie_value.is_dict());
    const base::DictionaryValue& cookie =
        base::Value::AsDictionaryValue(cookie_value);
    EXPECT_TRUE(cookie.GetString("name", &name));
    if (name == "cookie_for_this_url") {
      EXPECT_TRUE(cookie.GetString("value", &value));
      EXPECT_EQ("mendacious", value);
      found++;
    } else if (name == "cookie_for_another_url") {
      EXPECT_TRUE(cookie.GetString("value", &value));
      EXPECT_EQ("polyglottal", value);
      found++;
    } else {
      FAIL();
    }
  }
  EXPECT_EQ(2u, found);
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest,
                       AutoAttachToOOPIFAfterNavigationStarted) {
  ASSERT_TRUE(embedded_test_server()->Start());
  IsolateOriginsForTesting(embedded_test_server(), shell()->web_contents(),
                           {"b.com"});
  GURL a_url = embedded_test_server()->GetURL("a.com", "/title1.html");
  EXPECT_TRUE(NavigateToURL(shell(), a_url));
  RenderFrameHostImpl* main_frame = static_cast<RenderFrameHostImpl*>(
      shell()->web_contents()->GetMainFrame());

  // Create iframe and start navigation.
  GURL b_url(embedded_test_server()->GetURL("b.com", "/title1.html"));
  TestNavigationManager navigation_manager(shell()->web_contents(), b_url);
  EXPECT_TRUE(ExecJs(
      main_frame, JsReplace("const iframe = document.createElement('iframe');\n"
                            "iframe.src = $1;\n"
                            "document.body.appendChild(iframe);\n",
                            b_url)));
  // Pause subframe navigation.
  EXPECT_TRUE(navigation_manager.WaitForRequestStart());

  // Attach to DevTools after subframe starts navigating (but before it
  // finishes).
  Attach();

  DevToolsAgentHostImpl* main_frame_agent =
      RenderFrameDevToolsAgentHost::GetFor(main_frame);
  EXPECT_NE(main_frame_agent, nullptr);

  // Start auto-attach.
  std::unique_ptr<base::DictionaryValue> command_params;
  command_params = std::make_unique<base::DictionaryValue>();
  command_params->SetBoolean("autoAttach", true);
  command_params->SetBoolean("waitForDebuggerOnStart", false);
  command_params->SetBoolean("flatten", true);
  SendCommand("Target.setAutoAttach", std::move(command_params));

  // Child frame should be created at this point, but isn't an OOPIF yet, so
  // shouldn't have its own DevToolsAgentHost yet.
  FrameTreeNode* child = main_frame->child_at(0);
  EXPECT_NE(child, nullptr);
  EXPECT_EQ(RenderFrameDevToolsAgentHost::GetFor(child), main_frame_agent);

  // Resume navigation.
  navigation_manager.WaitForNavigationFinished();

  // Target for OOPIF should get attached.
  auto notification = WaitForNotification("Target.attachedToTarget", true);
  EXPECT_NE(RenderFrameDevToolsAgentHost::GetFor(child), main_frame_agent);
  EXPECT_FALSE(notification->FindBoolPath("waitingForDebugger").value());
}

class DevToolsProtocolDeviceEmulationTest : public DevToolsProtocolTest {
 public:
  ~DevToolsProtocolDeviceEmulationTest() override {}

  void EmulateDeviceSize(gfx::Size size) {
    auto params = std::make_unique<base::DictionaryValue>();
    params->SetInteger("width", size.width());
    params->SetInteger("height", size.height());
    params->SetDouble("deviceScaleFactor", 0);
    params->SetBoolean("mobile", false);
    SendCommand("Emulation.setDeviceMetricsOverride", std::move(params));
  }

  gfx::Size GetViewSize() {
    return shell()
        ->web_contents()
        ->GetMainFrame()
        ->GetView()
        ->GetViewBounds()
        .size();
  }
};

// Setting frame size (through RWHV) is not supported on Android.
#if defined(OS_ANDROID)
#define MAYBE_DeviceSize DISABLED_DeviceSize
#else
#define MAYBE_DeviceSize DeviceSize
#endif
IN_PROC_BROWSER_TEST_F(DevToolsProtocolDeviceEmulationTest, MAYBE_DeviceSize) {
  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());

  GURL test_url1 =
      embedded_test_server()->GetURL("A.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url1, 1);
  Attach();

  const gfx::Size original_size = GetViewSize();
  const gfx::Size emulated_size_1 =
      gfx::Size(original_size.width() - 50, original_size.height() - 50);
  const gfx::Size emulated_size_2 =
      gfx::Size(original_size.width() - 100, original_size.height() - 100);

  EmulateDeviceSize(emulated_size_1);
  EXPECT_EQ(emulated_size_1, GetViewSize());

  EmulateDeviceSize(emulated_size_2);
  EXPECT_EQ(emulated_size_2, GetViewSize());

  GURL test_url2 =
      embedded_test_server()->GetURL("B.com", "/devtools/navigation.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url2, 1);
  EXPECT_EQ(emulated_size_2, GetViewSize());

  SendCommand("Emulation.clearDeviceMetricsOverride", nullptr);
  EXPECT_EQ(original_size, GetViewSize());
}

// Setting frame size (through RWHV) is not supported on Android.
#if defined(OS_ANDROID)
#define MAYBE_RenderKillDoesNotCrashBrowser \
  DISABLED_RenderKillDoesNotCrashBrowser
#else
#define MAYBE_RenderKillDoesNotCrashBrowser RenderKillDoesNotCrashBrowser
#endif
IN_PROC_BROWSER_TEST_F(DevToolsProtocolDeviceEmulationTest,
                       MAYBE_RenderKillDoesNotCrashBrowser) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  EmulateDeviceSize(gfx::Size(200, 200));

  {
    ScopedAllowRendererCrashes scoped_allow_renderer_crashes(shell());
    NavigateToURLBlockUntilNavigationsComplete(
        shell(), GURL(blink::kChromeUICrashURL), 1);
  }

  SendCommand("Emulation.clearDeviceMetricsOverride", nullptr);
  // Should not crash at this point.
}

class DevToolsProtocolTouchTest : public DevToolsProtocolTest {
 public:
  ~DevToolsProtocolTouchTest() override {}

  void SetUpCommandLine(base::CommandLine* command_line) override {
    command_line->AppendSwitchASCII(
        switches::kTouchEventFeatureDetection,
        switches::kTouchEventFeatureDetectionDisabled);
  }
};

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTouchTest, EnableTouch) {
  std::unique_ptr<base::DictionaryValue> params;

  content::SetupCrossSiteRedirector(embedded_test_server());
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL test_url1 =
      embedded_test_server()->GetURL("A.com", "/devtools/enable_touch.html");
  GURL test_url2 =
      embedded_test_server()->GetURL("B.com", "/devtools/enable_touch.html");
  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url1, 1);
  Attach();

  params = std::make_unique<base::DictionaryValue>();
  SendCommand("Page.enable", std::move(params), true);

  EXPECT_EQ(true, EvalJs(shell()->web_contents(), "checkProtos(false)"));

  params = std::make_unique<base::DictionaryValue>();
  params->SetBoolean("enabled", true);
  SendCommand("Emulation.setTouchEmulationEnabled", std::move(params), true);
  EXPECT_EQ(true, EvalJs(shell()->web_contents(), "checkProtos(false)"));

  params = std::make_unique<base::DictionaryValue>();
  params->SetString("url", test_url2.spec());
  SendCommand("Page.navigate", std::move(params), false);
  WaitForNotification("Page.frameStoppedLoading");
  EXPECT_EQ(true, EvalJs(shell()->web_contents(), "checkProtos(true)"));

  params = std::make_unique<base::DictionaryValue>();
  params->SetBoolean("enabled", false);
  SendCommand("Emulation.setTouchEmulationEnabled", std::move(params), true);
  EXPECT_EQ(true, EvalJs(shell()->web_contents(), "checkProtos(true)"));

  params = std::make_unique<base::DictionaryValue>();
  SendCommand("Page.reload", std::move(params), false);
  WaitForNotification("Page.frameStoppedLoading");
  EXPECT_EQ(true, EvalJs(shell()->web_contents(), "checkProtos(false)"));
}

class DevToolsProtocolBackForwardCacheTest : public DevToolsProtocolTest {
 public:
  DevToolsProtocolBackForwardCacheTest() {
    feature_list_.InitWithFeaturesAndParameters(
        {{features::kBackForwardCache,
          {{"TimeToLiveInBackForwardCacheInSeconds", "3600"}}}},
        // Allow BackForwardCache for all devices regardless of their memory.
        {features::kBackForwardCacheMemoryControls});
  }
  ~DevToolsProtocolBackForwardCacheTest() override = default;

  // content::WebContentsDelegate:
  bool IsBackForwardCacheSupported() override { return true; }

  std::string Evaluate(std::string script, base::Location location) {
    std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
    params->SetString("expression", script);
    SendCommand("Runtime.evaluate", std::move(params), true);
    base::Value* result_value;
    EXPECT_TRUE(result_->Get("result.value", &result_value));
    DCHECK(result_value->is_string())
        << "Valued to evaluate " << script << " from " << location.ToString();
    return result_value->GetString();
  }

 private:
  base::test::ScopedFeatureList feature_list_;
};

// This test checks that the DevTools continue to work when the page is stored
// in and restored from back-forward cache. In particular:
// - that the session continues to be attached and the navigations are handled
// correctly.
// - when the old page is stored in the cache, the messages are still handled by
// the new page.
// - when the page is restored from the cache, it continues to handle protocol
// messages.
IN_PROC_BROWSER_TEST_F(DevToolsProtocolBackForwardCacheTest, Basic) {
  ASSERT_TRUE(embedded_test_server()->Start());
  GURL url_a(embedded_test_server()->GetURL("a.com", "/title1.html"));
  GURL url_b(embedded_test_server()->GetURL("b.com", "/title1.html"));

  // 1) Navigate to A and inject some state.
  EXPECT_TRUE(NavigateToURL(shell(), url_a));
  EXPECT_TRUE(ExecJs(shell(), "var state = 'page1'"));

  // 2) Attach DevTools session.
  Attach();

  // 3) Extract the state via the DevTools protocol.
  EXPECT_EQ("page1", Evaluate("state", FROM_HERE));

  // 3) Navigate to B and inject some different state.
  EXPECT_TRUE(NavigateToURL(shell(), url_b));
  EXPECT_TRUE(ExecJs(shell(), "var state = 'page2'"));

  // 4) Ensure that the DevTools protocol commands are handled by the new page
  // (even though the old page is alive and is stored in the back-forward
  // cache).
  EXPECT_EQ("page2", Evaluate("state", FROM_HERE));

  // 5) Go back.
  shell()->web_contents()->GetController().GoBack();
  EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));

  // 6) Ensure that the page has been restored from the cache and responds to
  // the DevTools commands.
  EXPECT_EQ("page1", Evaluate("state", FROM_HERE));
}

// Download tests are flaky on Android: https://crbug.com/7546
#if !defined(OS_ANDROID)
namespace {

static DownloadManagerImpl* DownloadManagerForShell(Shell* shell) {
  // We're in a content_browsertest; we know that the DownloadManager
  // is a DownloadManagerImpl.
  return static_cast<DownloadManagerImpl*>(
      shell->web_contents()->GetBrowserContext()->GetDownloadManager());
}

static void RemoveShellDelegate(Shell* shell) {
  content::ShellDownloadManagerDelegate* shell_delegate =
      static_cast<content::ShellDownloadManagerDelegate*>(
          DownloadManagerForShell(shell)->GetDelegate());
  shell_delegate->SetDownloadManager(nullptr);
  DownloadManagerForShell(shell)->SetDelegate(nullptr);
}

class CountingDownloadFile : public download::DownloadFileImpl {
 public:
  CountingDownloadFile(
      std::unique_ptr<download::DownloadSaveInfo> save_info,
      const base::FilePath& default_downloads_directory,
      std::unique_ptr<download::InputStream> stream,
      uint32_t download_id,
      base::WeakPtr<download::DownloadDestinationObserver> observer)
      : download::DownloadFileImpl(std::move(save_info),
                                   default_downloads_directory,
                                   std::move(stream),
                                   download_id,
                                   observer) {}

  ~CountingDownloadFile() override {
    DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
    active_files_--;
  }

  void Initialize(
      InitializeCallback callback,
      CancelRequestCallback cancel_request_callback,
      const download::DownloadItem::ReceivedSlices& received_slices) override {
    DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
    active_files_++;
    download::DownloadFileImpl::Initialize(std::move(callback),
                                           std::move(cancel_request_callback),
                                           received_slices);
  }

  static void GetNumberActiveFiles(int* result) {
    DCHECK(download::GetDownloadTaskRunner()->RunsTasksInCurrentSequence());
    *result = active_files_;
  }

  // Can be called on any thread, and will block (running message loop)
  // until data is returned.
  static int GetNumberActiveFilesFromFileThread() {
    int result = -1;
    base::RunLoop run_loop;
    download::GetDownloadTaskRunner()->PostTaskAndReply(
        FROM_HERE,
        base::BindOnce(&CountingDownloadFile::GetNumberActiveFiles, &result),
        run_loop.QuitWhenIdleClosure());
    run_loop.Run();
    DCHECK_NE(-1, result);
    return result;
  }

 private:
  static int active_files_;
};

int CountingDownloadFile::active_files_ = 0;

class CountingDownloadFileFactory : public download::DownloadFileFactory {
 public:
  CountingDownloadFileFactory() {}
  ~CountingDownloadFileFactory() override {}

  // DownloadFileFactory interface.
  download::DownloadFile* CreateFile(
      std::unique_ptr<download::DownloadSaveInfo> save_info,
      const base::FilePath& default_downloads_directory,
      std::unique_ptr<download::InputStream> stream,
      uint32_t download_id,
      base::WeakPtr<download::DownloadDestinationObserver> observer) override {
    return new CountingDownloadFile(std::move(save_info),
                                    default_downloads_directory,
                                    std::move(stream), download_id, observer);
  }
};

// Get the next created download.
class DownloadCreateObserver : DownloadManager::Observer {
 public:
  explicit DownloadCreateObserver(DownloadManager* manager)
      : manager_(manager), item_(nullptr), received_item_response_(false) {
    manager_->AddObserver(this);
  }

  ~DownloadCreateObserver() override {
    if (manager_)
      manager_->RemoveObserver(this);
    manager_ = nullptr;
  }

  void ManagerGoingDown(DownloadManager* manager) override {
    DCHECK_EQ(manager_, manager);
    manager_->RemoveObserver(this);
    manager_ = nullptr;
  }

  void OnDownloadCreated(DownloadManager* manager,
                         download::DownloadItem* download) override {
    received_item_response_ = true;

    if (!item_)
      item_ = download;

    if (completion_closure_)
      std::move(completion_closure_).Run();
  }

  void OnDownloadDropped(DownloadManager* manager) override {
    received_item_response_ = true;

    item_ = nullptr;
    if (completion_closure_)
      std::move(completion_closure_).Run();
  }

  download::DownloadItem* WaitForFinished() {
    DCHECK_CURRENTLY_ON(BrowserThread::UI);
    if (!received_item_response_) {
      base::RunLoop run_loop;
      completion_closure_ = run_loop.QuitClosure();
      run_loop.Run();
    }
    return item_;
  }

 private:
  DownloadManager* manager_;
  download::DownloadItem* item_;
  bool received_item_response_;
  base::OnceClosure completion_closure_;
};

bool IsDownloadInState(download::DownloadItem::DownloadState state,
                       download::DownloadItem* item) {
  return item->GetState() == state;
}

class DevToolsDownloadContentTest : public DevToolsProtocolTest {
 protected:
  void SetUpOnMainThread() override {
    base::ScopedAllowBlockingForTesting allow_blocking;
    ASSERT_TRUE(downloads_directory_.CreateUniqueTempDir());

    // Set shell default download manager to test proxy reset behavior.
    test_delegate_ = std::make_unique<ShellDownloadManagerDelegate>();
    test_delegate_->SetDownloadBehaviorForTesting(
        downloads_directory_.GetPath());
    DownloadManager* manager = DownloadManagerForShell(shell());
    manager->GetDelegate()->Shutdown();
    manager->SetDelegate(test_delegate_.get());
    test_delegate_->SetDownloadManager(manager);

    embedded_test_server()->RegisterRequestHandler(base::BindRepeating(
        &content::SlowDownloadHttpResponse::HandleSlowDownloadRequest));
    ASSERT_TRUE(embedded_test_server()->Start());
  }

  void SetDownloadBehavior(const std::string& behavior) {
    std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
    params->SetString("behavior", behavior);
    SendCommand("Page.setDownloadBehavior", std::move(params));

    EXPECT_GE(result_ids_.size(), 1u);
  }

  void SetDownloadBehavior(const std::string& behavior,
                           const std::string& download_path) {
    std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
    params->SetString("behavior", behavior);
    params->SetString("downloadPath", download_path);
    SendCommand("Page.setDownloadBehavior", std::move(params));

    EXPECT_GE(result_ids_.size(), 1u);
  }

  // Create a DownloadTestObserverTerminal that will wait for the
  // specified number of downloads to finish.
  DownloadTestObserver* CreateWaiter(Shell* shell, int num_downloads) {
    DownloadManager* download_manager = DownloadManagerForShell(shell);
    return new DownloadTestObserverTerminal(
        download_manager, num_downloads,
        DownloadTestObserver::ON_DANGEROUS_DOWNLOAD_FAIL);
  }

  // Note: Cannot be used with other alternative DownloadFileFactorys
  void SetupEnsureNoPendingDownloads() {
    DownloadManagerForShell(shell())->SetDownloadFileFactoryForTesting(
        std::unique_ptr<download::DownloadFileFactory>(
            new CountingDownloadFileFactory()));
  }

  void WaitForCompletion(download::DownloadItem* download) {
    DownloadUpdatedObserver(
        download, base::BindRepeating(&IsDownloadInState,
                                      download::DownloadItem::COMPLETE))
        .WaitForEvent();
  }

  bool EnsureNoPendingDownloads() {
    return CountingDownloadFile::GetNumberActiveFilesFromFileThread() == 0;
  }

  // Checks that |path| is has |file_size| bytes, and matches the |value|
  // string.
  bool VerifyFile(const base::FilePath& path,
                  const std::string& value,
                  const int64_t file_size) {
    std::string file_contents;

    {
      base::ScopedAllowBlockingForTesting allow_blocking;
      bool read = base::ReadFileToString(path, &file_contents);
      EXPECT_TRUE(read) << "Failed reading file: " << path.value() << std::endl;
      if (!read)
        return false;  // Couldn't read the file.
    }

    // Note: we don't handle really large files (more than size_t can hold)
    // so we will fail in that case.
    size_t expected_size = static_cast<size_t>(file_size);

    // Check the size.
    EXPECT_EQ(expected_size, file_contents.size());
    if (expected_size != file_contents.size())
      return false;

    // Check the contents.
    EXPECT_EQ(value, file_contents);
    if (memcmp(file_contents.c_str(), value.c_str(), expected_size) != 0)
      return false;

    return true;
  }

  // Start a download and return the item.
  download::DownloadItem* StartDownloadAndReturnItem(Shell* shell, GURL url) {
    std::unique_ptr<DownloadCreateObserver> observer(
        new DownloadCreateObserver(DownloadManagerForShell(shell)));
    shell->LoadURL(url);
    return observer->WaitForFinished();
  }

 private:
  // Location of the downloads directory for these tests
  base::ScopedTempDir downloads_directory_;
  std::unique_ptr<ShellDownloadManagerDelegate> test_delegate_;
};

}  // namespace

// Check that downloading a single file works.
IN_PROC_BROWSER_TEST_F(DevToolsDownloadContentTest, SingleDownload) {
  base::ScopedAllowBlockingForTesting allow_blocking;
  base::ScopedTempDir temp_dir;
  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
  std::string download_path =
      temp_dir.GetPath().AppendASCII("download").AsUTF8Unsafe();

  SetupEnsureNoPendingDownloads();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  SetDownloadBehavior("allow", download_path);
  // Create a download, wait until it's started, and confirm
  // we're in the expected state.
  download::DownloadItem* download = StartDownloadAndReturnItem(
      shell(), embedded_test_server()->GetURL("/download/download-test.lib"));
  ASSERT_EQ(download::DownloadItem::IN_PROGRESS, download->GetState());
  WaitForCompletion(download);
  ASSERT_EQ(download::DownloadItem::COMPLETE, download->GetState());
}

// Check that downloads can be cancelled gracefully.
IN_PROC_BROWSER_TEST_F(DevToolsDownloadContentTest, DownloadCancelled) {
  base::ScopedAllowBlockingForTesting allow_blocking;
  SetupEnsureNoPendingDownloads();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  SetDownloadBehavior("allow", "download");
  // Create a download, wait until it's started, and confirm
  // we're in the expected state.
  download::DownloadItem* download = StartDownloadAndReturnItem(
      shell(), embedded_test_server()->GetURL(
                   content::SlowDownloadHttpResponse::kUnknownSizeUrl));
  ASSERT_EQ(download::DownloadItem::IN_PROGRESS, download->GetState());

  // Cancel the download and wait for download system quiesce.
  download->Cancel(true);
  DownloadTestFlushObserver flush_observer(DownloadManagerForShell(shell()));
  flush_observer.WaitForFlush();

  // Get the important info from other threads and check it.
  EXPECT_TRUE(EnsureNoPendingDownloads());
}

// Check that denying downloads works.
IN_PROC_BROWSER_TEST_F(DevToolsDownloadContentTest, DeniedDownload) {
  base::ScopedAllowBlockingForTesting allow_blocking;
  SetupEnsureNoPendingDownloads();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  SetDownloadBehavior("deny");
  // Create a download, wait and confirm it was cancelled.
  download::DownloadItem* download = StartDownloadAndReturnItem(
      shell(), embedded_test_server()->GetURL("/download/download-test.lib"));
  DownloadTestFlushObserver flush_observer(DownloadManagerForShell(shell()));
  flush_observer.WaitForFlush();
  EXPECT_TRUE(EnsureNoPendingDownloads());
  ASSERT_EQ(download::DownloadItem::CANCELLED, download->GetState());
}

// Check that defaulting downloads works as expected.
IN_PROC_BROWSER_TEST_F(DevToolsDownloadContentTest, DefaultDownload) {
  base::ScopedAllowBlockingForTesting allow_blocking;
  SetupEnsureNoPendingDownloads();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  SetDownloadBehavior("default");
  // Create a download, wait until it's started, and confirm
  // we're in the expected state.
  download::DownloadItem* download = StartDownloadAndReturnItem(
      shell(), embedded_test_server()->GetURL(
                   content::SlowDownloadHttpResponse::kUnknownSizeUrl));
  ASSERT_EQ(download::DownloadItem::IN_PROGRESS, download->GetState());

  // Cancel the download and wait for download system quiesce.
  download->Cancel(true);
  DownloadTestFlushObserver flush_observer(DownloadManagerForShell(shell()));
  flush_observer.WaitForFlush();

  // Get the important info from other threads and check it.
  EXPECT_TRUE(EnsureNoPendingDownloads());
}

// Check that defaulting downloads cancels when there's no proxy
// download delegate.
IN_PROC_BROWSER_TEST_F(DevToolsDownloadContentTest, DefaultDownloadHeadless) {
  base::ScopedAllowBlockingForTesting allow_blocking;
  SetupEnsureNoPendingDownloads();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();
  RemoveShellDelegate(shell());

  SetDownloadBehavior("default");
  // Create a download, wait and confirm it was cancelled.
  download::DownloadItem* download = StartDownloadAndReturnItem(
      shell(), embedded_test_server()->GetURL("/download/download-test.lib"));
  DownloadTestFlushObserver flush_observer(DownloadManagerForShell(shell()));
  flush_observer.WaitForFlush();
  EXPECT_TRUE(EnsureNoPendingDownloads());
  ASSERT_EQ(download::DownloadItem::CANCELLED, download->GetState());
}

// Flaky on ChromeOS https://crbug.com/860312
// Also flaky on Wndows and other platforms: http://crbug.com/1070302
// Check that downloading multiple (in this case, 2) files does not result in
// corrupted files.
IN_PROC_BROWSER_TEST_F(DevToolsDownloadContentTest, DISABLED_MultiDownload) {
  base::ScopedAllowBlockingForTesting allow_blocking;
  base::ScopedTempDir temp_dir;
  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
  std::string download1_path =
      temp_dir.GetPath().AppendASCII("download1").AsUTF8Unsafe();
  std::string download2_path =
      temp_dir.GetPath().AppendASCII("download2").AsUTF8Unsafe();

  SetupEnsureNoPendingDownloads();
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  SetDownloadBehavior("allow", download1_path);
  // Create a download, wait until it's started, and confirm
  // we're in the expected state.
  download::DownloadItem* download1 = StartDownloadAndReturnItem(
      shell(), embedded_test_server()->GetURL(
                   content::SlowDownloadHttpResponse::kUnknownSizeUrl));
  ASSERT_EQ(download::DownloadItem::IN_PROGRESS, download1->GetState());

  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  SetDownloadBehavior("allow", download2_path);
  // Start the second download and wait until it's done.
  GURL url(embedded_test_server()->GetURL("/download/download-test.lib"));
  download::DownloadItem* download2 = StartDownloadAndReturnItem(shell(), url);
  WaitForCompletion(download2);

  ASSERT_EQ(download::DownloadItem::IN_PROGRESS, download1->GetState());
  ASSERT_EQ(download::DownloadItem::COMPLETE, download2->GetState());

  // Allow the first request to finish.
  std::unique_ptr<DownloadTestObserver> observer2(CreateWaiter(shell(), 1));
  EXPECT_TRUE(NavigateToURL(
      shell(), embedded_test_server()->GetURL(
                   content::SlowDownloadHttpResponse::kFinishSlowResponseUrl)));
  observer2->WaitForFinished();  // Wait for the third request.
  EXPECT_EQ(
      1u, observer2->NumDownloadsSeenInState(download::DownloadItem::COMPLETE));

  // Get the important info from other threads and check it.
  EXPECT_TRUE(EnsureNoPendingDownloads());

  // The |DownloadItem|s should now be done and have the final file names.
  // Verify that the files have the expected data and size.
  // |file1| should be full of '*'s, and |file2| should be the same as the
  // source file.
  base::FilePath file1(download1->GetTargetFilePath());
  ASSERT_EQ(file1.DirName().MaybeAsASCII(), download1_path);
  size_t file_size1 =
      content::SlowDownloadHttpResponse::kFirstResponsePartSize +
      content::SlowDownloadHttpResponse::kSecondResponsePartSize;
  std::string expected_contents(file_size1, '*');
  ASSERT_TRUE(VerifyFile(file1, expected_contents, file_size1));

  base::FilePath file2(download2->GetTargetFilePath());
  ASSERT_EQ(file2.DirName().MaybeAsASCII(), download2_path);
  ASSERT_TRUE(base::ContentsEqual(
      file2, GetTestFilePath("download", "download-test.lib")));
}
#endif  // !defined(ANDROID)

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, UnsafeOperations) {
  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  base::Value params(base::Value::Type::DICTIONARY);
  params.SetStringKey("url", "http://www.example.com/hello.js");
  params.SetStringKey("data", "Tm90aGluZyB0byBzZWUgaGVyZSE=");

  SendCommand("Page.addCompilationCache",
              std::make_unique<base::Value>(params.Clone()));
  EXPECT_TRUE(result_);
  Detach();
  SetAllowUnsafeOperations(false);
  Attach();
  SendCommand("Page.addCompilationCache",
              std::make_unique<base::Value>(params.Clone()));
  EXPECT_THAT(error_, base::test::DictionaryHasValue(
                          "code", base::Value(static_cast<int>(
                                      crdtp::DispatchCode::SERVER_ERROR))));
}

IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, TracingWithPerfettoConfig) {
  std::unique_ptr<base::DictionaryValue> params(new base::DictionaryValue());
  base::trace_event::TraceConfig chrome_config;
  base::DictionaryValue* command_result;
  perfetto::TraceConfig perfetto_config;
  std::string perfetto_config_encoded;

  chrome_config = base::trace_event::TraceConfig();
  perfetto_config = tracing::GetDefaultPerfettoConfig(
      chrome_config,
      /*privacy_filtering_enabled=*/false,
      /*convert_to_legacy_json=*/false,
      perfetto::protos::gen::ChromeConfig::USER_INITIATED);
  base::Base64Encode(perfetto_config.SerializeAsString(),
                     &perfetto_config_encoded);
  params->SetKey("perfettoConfig", base::Value(perfetto_config_encoded));
  params->SetString("transferMode", "ReturnAsStream");

  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
  Attach();

  command_result = SendCommand("Tracing.start", std::move(params), true);
  ASSERT_NE(command_result, nullptr);

  command_result = SendCommand("Tracing.end", nullptr, true);
  ASSERT_NE(command_result, nullptr);

  WaitForNotification("Tracing.tracingComplete", true);
}

class SystemTracingDevToolsProtocolTest : public DevToolsProtocolTest {
 protected:
  base::DictionaryValue* StartSystemTrace() {
    perfetto::TraceConfig perfetto_config = tracing::GetDefaultPerfettoConfig(
        base::trace_event::TraceConfig(),
        /*privacy_filtering_enabled=*/false,
        /*convert_to_legacy_json=*/false,
        perfetto::protos::gen::ChromeConfig::USER_INITIATED);

    std::string perfetto_config_encoded;
    base::Base64Encode(perfetto_config.SerializeAsString(),
                       &perfetto_config_encoded);

    auto params = std::make_unique<base::DictionaryValue>();
    params->SetKey("perfettoConfig", base::Value(perfetto_config_encoded));
    params->SetString("transferMode", "ReturnAsStream");
    params->SetString("tracingBackend", "system");

    NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
    Attach();

    return SendCommand("Tracing.start", std::move(params), true);
  }
};

IN_PROC_BROWSER_TEST_F(SystemTracingDevToolsProtocolTest,
                       StartSystemTracingFailsWhenSystemConsumerDisabled) {
  base::DictionaryValue* command_result = StartSystemTrace();
  ASSERT_EQ(command_result, nullptr);
}

#if defined(OS_POSIX)
class PosixSystemTracingDevToolsProtocolTest
    : public SystemTracingDevToolsProtocolTest {
 public:
  PosixSystemTracingDevToolsProtocolTest() {
    feature_list_.InitAndEnableFeature(features::kEnablePerfettoSystemTracing);
    tracing::PerfettoTracedProcess::Get()
        ->SetAllowSystemTracingConsumerForTesting(true);
    const char* producer_sock = getenv("PERFETTO_PRODUCER_SOCK_NAME");
    saved_producer_sock_name_ = producer_sock ? producer_sock : std::string();
    const char* consumer_sock = getenv("PERFETTO_CONSUMER_SOCK_NAME");
    saved_consumer_sock_name_ = consumer_sock ? consumer_sock : std::string();
  }

  ~PosixSystemTracingDevToolsProtocolTest() override {
    if (!saved_producer_sock_name_.empty()) {
      SetProducerSockEnvName(saved_producer_sock_name_);
    } else {
      EXPECT_EQ(0, unsetenv("PERFETTO_PRODUCER_SOCK_NAME"));
    }
    if (!saved_consumer_sock_name_.empty()) {
      SetConsumerSockEnvName(saved_consumer_sock_name_);
    } else {
      EXPECT_EQ(0, unsetenv("PERFETTO_CONSUMER_SOCK_NAME"));
    }
  }

 protected:
  void SetProducerSockEnvName(const std::string& value) {
    ASSERT_EQ(0, setenv("PERFETTO_PRODUCER_SOCK_NAME", value.c_str(),
                        /*overwrite=*/true));
  }
  void SetConsumerSockEnvName(const std::string& value) {
    ASSERT_EQ(0, setenv("PERFETTO_CONSUMER_SOCK_NAME", value.c_str(),
                        /*overwrite=*/true));
  }

 private:
  base::test::ScopedFeatureList feature_list_;
  std::string saved_producer_sock_name_;
  std::string saved_consumer_sock_name_;
};

class InvalidSystemTracingDevToolsProtocolTest
    : public PosixSystemTracingDevToolsProtocolTest {
 public:
  void SetUp() override {
    // Use a non-existing backend.
    SetProducerSockEnvName("non_existing");
    SetConsumerSockEnvName("non_existing");

    PosixSystemTracingDevToolsProtocolTest::SetUp();
  }
};

IN_PROC_BROWSER_TEST_F(InvalidSystemTracingDevToolsProtocolTest,
                       StartTracingFailsWithInvalidSockets) {
  base::DictionaryValue* command_result = StartSystemTrace();
  ASSERT_EQ(command_result, nullptr);
}

class FakeSystemTracingDevToolsProtocolTest
    : public PosixSystemTracingDevToolsProtocolTest {
 public:
  FakeSystemTracingDevToolsProtocolTest()
      : deferred_task_runner_(new base::DeferredSequencedTaskRunner()) {}

  void SetUp() override {
    SetupService();
    PosixSystemTracingDevToolsProtocolTest::SetUp();
  }

  void PreRunTestOnMainThread() override {
    deferred_task_runner_->StartWithTaskRunner(
        base::SequencedTaskRunnerHandle::Get());

    PosixSystemTracingDevToolsProtocolTest::PreRunTestOnMainThread();
  }

 private:
  void SetupService() {
    base::ScopedAllowBlockingForTesting allow_blocking;
    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());

    system_service_ = std::make_unique<tracing::MockSystemService>(
        temp_dir_, std::make_unique<base::tracing::PerfettoTaskRunner>(
                       deferred_task_runner_));

    SetProducerSockEnvName(system_service_->producer());
    SetConsumerSockEnvName(system_service_->consumer());
  }

  base::ScopedTempDir temp_dir_;
  scoped_refptr<base::DeferredSequencedTaskRunner> deferred_task_runner_;
  std::unique_ptr<tracing::MockSystemService> system_service_;
};

// No system consumer support on Android to reduce Chrome binary size.
#if defined(OS_ANDROID)
#define MAYBE_TracingWithFakeSystemBackend DISABLED_TracingWithFakeSystemBackend
#else
#define MAYBE_TracingWithFakeSystemBackend TracingWithFakeSystemBackend
#endif
IN_PROC_BROWSER_TEST_F(FakeSystemTracingDevToolsProtocolTest,
                       MAYBE_TracingWithFakeSystemBackend) {
  base::DictionaryValue* command_result = StartSystemTrace();
  ASSERT_NE(command_result, nullptr);

  command_result = SendCommand("Tracing.end", nullptr, true);
  ASSERT_NE(command_result, nullptr);

  WaitForNotification("Tracing.tracingComplete", true);
}

class FakeSystemTracingForbiddenDevToolsProtocolTest
    : public PosixSystemTracingDevToolsProtocolTest {
 public:
  void SetUp() override {
    tracing::PerfettoTracedProcess::Get()
        ->SetAllowSystemTracingConsumerForTesting(false);
    PosixSystemTracingDevToolsProtocolTest::SetUp();
  }
};

// No system consumer support on Android to reduce Chrome binary size.
#if defined(OS_ANDROID)
#define MAYBE_SystemConsumerForbidden DISABLED_SystemConsumerForbidden
#else
#define MAYBE_SystemConsumerForbidden SystemConsumerForbidden
#endif
IN_PROC_BROWSER_TEST_F(FakeSystemTracingForbiddenDevToolsProtocolTest,
                       MAYBE_SystemConsumerForbidden) {
  base::DictionaryValue* command_result = StartSystemTrace();
  ASSERT_EQ(command_result, nullptr);
}
#endif  // defined(OS_POSIX)

}  // namespace content