Switching MediaStreamManager from using AudioManager to AudioSystem

media/audio/audio_system_impl.h

Index: media/audio/audio_system_impl.h
diff --git a/media/audio/audio_system_impl.h b/media/audio/audio_system_impl.h
index dd9342c81812f420b22ce1bf1c351c567ad0dc75..7b8dfc87b43ffc14028d10051537af8d4b4a0f70 100644
--- a/media/audio/audio_system_impl.h
+++ b/media/audio/audio_system_impl.h
@@ -31,14 +31,14 @@ class MEDIA_EXPORT AudioSystemImpl : public AudioSystem {
 
   void HasInputDevices(OnBoolCallback on_has_devices_cb) const override;
 
+  base::SingleThreadTaskRunner* GetTaskRunner() const override;
+
   AudioManager* GetAudioManager() const override;
 
  protected:
   AudioSystemImpl(AudioManager* audio_manager);
 
  private:
-  base::SingleThreadTaskRunner* GetTaskRunner() const;
-
   AudioManager* const audio_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioSystemImpl);