Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

media/audio/audio_manager_base.h

Index: media/audio/audio_manager_base.h
diff --git a/media/audio/audio_manager_base.h b/media/audio/audio_manager_base.h
index 09b021a0d2b2605faf1619b42de330246634b5a9..e1ec49ba02c78deae8432ebb68b8a31462c46775 100644
--- a/media/audio/audio_manager_base.h
+++ b/media/audio/audio_manager_base.h
@@ -48,8 +48,9 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
 
   virtual ~AudioManagerBase();
 
-  virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() OVERRIDE;
-  virtual scoped_refptr<base::MessageLoopProxy> GetWorkerLoop() OVERRIDE;
+  virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() OVERRIDE;
+  virtual scoped_refptr<base::SingleThreadTaskRunner> GetWorkerTaskRunner()
+      OVERRIDE;
 
   virtual base::string16 GetAudioInputDeviceModel() OVERRIDE;
 
@@ -99,7 +100,7 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   virtual AudioInputStream* MakeLowLatencyInputStream(
       const AudioParameters& params, const std::string& device_id) = 0;
 
-  // Listeners will be notified on the AudioManager::GetMessageLoop() loop.
+  // Listeners will be notified on the GetTaskRunner() task runner.
   virtual void AddOutputDeviceChangeListener(
       AudioDeviceListener* listener) OVERRIDE;
   virtual void RemoveOutputDeviceChangeListener(
@@ -187,10 +188,10 @@ class MEDIA_EXPORT AudioManagerBase : public AudioManager {
   // Thread used to interact with audio streams created by this audio manager.
   base::Thread audio_thread_;
 
-  // The message loop of the audio thread this object runs on. Used for internal
+  // The task runner of the audio thread this object runs on. Used for internal
   // tasks which run on the audio thread even after Shutdown() has been started
-  // and GetMessageLoop() starts returning NULL.
-  scoped_refptr<base::MessageLoopProxy> message_loop_;
+  // and GetTaskRunner() starts returning NULL.
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   // Map of cached AudioOutputDispatcher instances.  Must only be touched
   // from the audio thread (no locking).