Use ScopedTaskEnvironment instead of MessageLoopForUI in content tests.

content/renderer/media/media_stream_video_source_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
-#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/scoped_feature_list.h"
+#include "base/test/scoped_task_environment.h"
 #include "content/child/child_process.h"
 #include "content/public/common/content_features.h"
 #include "content/renderer/media/media_stream_video_source.h"
 #include "content/renderer/media/media_stream_video_track.h"
 #include "content/renderer/media/mock_constraint_factory.h"
 #include "content/renderer/media/mock_media_stream_video_sink.h"
 #include "content/renderer/media/mock_media_stream_video_source.h"
 #include "content/renderer/media/video_track_adapter.h"
 #include "media/base/limits.h"
 #include "media/base/video_frame.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/web/WebHeap.h"
 
 using ::testing::_;
 using ::testing::DoAll;
 using ::testing::SaveArg;
 
 namespace content {
 
 ACTION_P(RunClosure, closure) {
   closure.Run();
 }
 
 class MediaStreamVideoSourceTest : public ::testing::Test {
  public:
   MediaStreamVideoSourceTest()
-      : child_process_(new ChildProcess()),
+      : scoped_task_environment_(
+            base::test::ScopedTaskEnvironment::MainThreadType::UI),
+        child_process_(new ChildProcess()),
         number_of_successful_constraints_applied_(0),
         number_of_failed_constraints_applied_(0),
         result_(MEDIA_DEVICE_OK),
         result_name_(""),
         mock_source_(new MockMediaStreamVideoSource(
             media::VideoCaptureFormat(gfx::Size(1280, 720),
                                       1000.0,
                                       media::PIXEL_FORMAT_I420),
             false)) {
     scoped_feature_list_.InitAndDisableFeature(
@@ skipping 184 matching lines @@
       result_name_ = result_name;
       ++number_of_failed_constraints_applied_;
     }
 
     if (!track_to_release_.IsNull()) {
       mock_source_ = nullptr;
       webkit_source_.Reset();
       track_to_release_.Reset();
     }
   }
-  const base::MessageLoopForUI message_loop_;
+  const base::test::ScopedTaskEnvironment scoped_task_environment_;
   const std::unique_ptr<ChildProcess> child_process_;
   blink::WebMediaStreamTrack track_to_release_;
   int number_of_successful_constraints_applied_;
   int number_of_failed_constraints_applied_;
   content::MediaStreamRequestResult result_;
   blink::WebString result_name_;
   blink::WebMediaStreamSource webkit_source_;
   // |mock_source_| is owned by |webkit_source_|.
   MockMediaStreamVideoSource* mock_source_;
   base::test::ScopedFeatureList scoped_feature_list_;
@@ skipping 117 matching lines @@
   EXPECT_EQ(muted_state, false);
   EXPECT_EQ(track.Source().GetReadyState(),
             blink::WebMediaStreamSource::kReadyStateLive);
 
   sink.DisconnectFromTrack();
 }
 
 class MediaStreamVideoSourceOldConstraintsTest : public ::testing::Test {
  public:
   MediaStreamVideoSourceOldConstraintsTest()
-      : child_process_(new ChildProcess()),
+      : scoped_task_environment_(
+            base::test::ScopedTaskEnvironment::MainThreadType::UI),
+        child_process_(new ChildProcess()),
         number_of_successful_constraints_applied_(0),
         number_of_failed_constraints_applied_(0),
         result_(MEDIA_DEVICE_OK),
         result_name_(""),
         mock_source_(new MockMediaStreamVideoSource(true)) {
     scoped_feature_list_.InitAndEnableFeature(
         features::kMediaStreamOldVideoConstraints);
 
     media::VideoCaptureFormats formats;
     formats.push_back(media::VideoCaptureFormat(
@@ skipping 181 matching lines @@
       result_name_ = result_name;
       ++number_of_failed_constraints_applied_;
     }
 
     if (!track_to_release_.IsNull()) {
       mock_source_ = nullptr;
       webkit_source_.Reset();
       track_to_release_.Reset();
     }
   }
-  const base::MessageLoopForUI message_loop_;
+  const base::test::ScopedTaskEnvironment scoped_task_environment_;
   const std::unique_ptr<ChildProcess> child_process_;
   blink::WebMediaStreamTrack track_to_release_;
   int number_of_successful_constraints_applied_;
   int number_of_failed_constraints_applied_;
   content::MediaStreamRequestResult result_;
   blink::WebString result_name_;
   blink::WebMediaStreamSource webkit_source_;
   // |mock_source_| is owned by |webkit_source_|.
   MockMediaStreamVideoSource* mock_source_;
   base::test::ScopedFeatureList scoped_feature_list_;
@@ skipping 619 matching lines @@
        InvalidMandatoryAspectRatioFails) {
   MockConstraintFactory factory;
   factory.basic().aspect_ratio.SetMax(0.0);
   blink::WebMediaStreamTrack track =
       CreateTrack("123", factory.CreateWebMediaConstraints());
   mock_source()->CompleteGetSupportedFormats();
   EXPECT_EQ(1, NumberOfFailedConstraintsCallbacks());
 }
 
 }  // namespace content