Log actual streams, not output controllers.

media/audio/audio_manager.h

Index: media/audio/audio_manager.h
diff --git a/media/audio/audio_manager.h b/media/audio/audio_manager.h
index ab9c82b0b28f552902cac9dd71ddd57581d743b0..88b7dd0544061ac06efdbe6a1e369a12bc7e60c7 100644
--- a/media/audio/audio_manager.h
+++ b/media/audio/audio_manager.h
@@ -18,6 +18,10 @@ class MessageLoop;
 class MessageLoopProxy;
 }
 
+namespace content {
+class MediaInternals;
+}
+
 namespace media {
 
 class AudioInputStream;
@@ -39,6 +43,9 @@ class MEDIA_EXPORT AudioManager {
   // like src/chrome.
   static AudioManager* Get();
 
+  void SetMediaInternals(content::MediaInternals* media_internals);
+  content::MediaInternals* GetMediaInternals();
+
   // Returns true if the OS reports existence of audio devices. This does not
   // guarantee that the existing devices support all formats and sample rates.
   virtual bool HasAudioOutputDevices() = 0;
@@ -179,6 +186,7 @@ class MEDIA_EXPORT AudioManager {
   AudioManager();
 
  private:
+  content::MediaInternals* media_internals_;
   DISALLOW_COPY_AND_ASSIGN(AudioManager);
 };