Remove usage of ScopedTaskScheduler.

media/gpu/video_decode_accelerator_unittest.cc

Index: media/gpu/video_decode_accelerator_unittest.cc
diff --git a/media/gpu/video_decode_accelerator_unittest.cc b/media/gpu/video_decode_accelerator_unittest.cc
index 97ffb0595269d2795d1348af13b96dd0f8f93f52..c29a5ee848df2f84cc8d97fada2d0172a9bc14f1 100644
--- a/media/gpu/video_decode_accelerator_unittest.cc
+++ b/media/gpu/video_decode_accelerator_unittest.cc
@@ -50,7 +50,6 @@
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/launcher/unit_test_launcher.h"
-#include "base/test/scoped_task_scheduler.h"
 #include "base/test/test_suite.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ -68,6 +67,7 @@
 #include "ui/gl/gl_image.h"
 
 #if defined(OS_WIN)
+#include "base/test/scoped_task_environment.h"

[gab, 2017/05/01 19:05:04]

wrong include block

[fdoray, 2017/05/03 17:38:14]

Done.

 #include "base/win/windows_version.h"
 #include "media/gpu/dxva_video_decode_accelerator_win.h"
 #elif defined(OS_CHROMEOS)
@@ -1816,17 +1816,7 @@ class VDATestSuite : public base::TestSuite {
   VDATestSuite(int argc, char** argv) : base::TestSuite(argc, argv) {}
 
   int Run() {
-#if defined(OS_WIN) || defined(USE_OZONE)
-    // For windows the decoding thread initializes the media foundation decoder
-    // which uses COM. We need the thread to be a UI thread.
-    // On Ozone, the backend initializes the event system using a UI
-    // thread.
-    base::MessageLoopForUI main_loop;

[gab, 2017/05/01 19:05:04]

ForUI?

[fdoray, 2017/05/03 17:38:14]

Done.

-#else
-    base::MessageLoop main_loop;
-#endif  // OS_WIN || USE_OZONE
-
-    base::test::ScopedTaskScheduler scoped_task_scheduler(&main_loop);
+    base::test::ScopedTaskEnvironment scoped_task_environment;
 
     media::g_env =
         reinterpret_cast<media::VideoDecodeAcceleratorTestEnvironment*>(