Remove usage of ScopedTaskScheduler.

chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc

Index: chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc
diff --git a/chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc b/chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc
index 17a791f80a19c9c005ca96bc190e1054aa496d63..db5c2f503a30a11fc2390215811eef7b711e0c5f 100644
--- a/chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc
+++ b/chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc
@@ -21,7 +21,7 @@
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
-#include "base/test/scoped_task_scheduler.h"
+#include "base/test/scoped_task_environment.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_checker.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ -241,7 +241,7 @@ class AudioVideoPipelineDeviceTest : public testing::Test {
 
   void OnPauseCompleted();
 
-  base::test::ScopedTaskScheduler task_scheduler_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
   MediaPipelineDeviceParams::MediaSyncType sync_type_;
   MediaPipelineDeviceParams::AudioStreamType audio_type_;
   std::unique_ptr<TaskRunnerImpl> task_runner_;