[content/browser/media] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

content/browser/media/capture/web_contents_audio_input_stream_unittest.cc

Index: content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
diff --git a/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc b/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
index c1078085dfc4bd64fe66e369b13f2f4af493b175..ffe8b4b5d3f168dbece96d86e62767170770a8b4 100644
--- a/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
+++ b/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
@@ -9,6 +9,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/message_loop/message_loop.h"

[xhwang, 2015/04/30 15:54:45]

Do we still need this?

[anujsharma, 2015/05/04 08:07:56]

Yes, it is required!!

+#include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
@@ -86,7 +87,7 @@ class MockWebContentsTracker : public WebContentsTracker {
 class MockVirtualAudioInputStream : public VirtualAudioInputStream {
  public:
   explicit MockVirtualAudioInputStream(
-      const scoped_refptr<base::MessageLoopProxy>& worker_loop)
+      const scoped_refptr<base::SingleThreadTaskRunner>& worker_loop)
       : VirtualAudioInputStream(TestAudioParameters(), worker_loop,
                                 VirtualAudioInputStream::AfterCloseCallback()),
         real_(TestAudioParameters(), worker_loop,