Plumb media data from renderers up to MediaInternals in the browser process.

chrome/browser/media/media_internals.h

Index: chrome/browser/media/media_internals.h
diff --git a/chrome/browser/media/media_internals.h b/chrome/browser/media/media_internals.h
index c0d276e1196f527f0aa4e8dea741cd6aabf610b2..7bde88355778aaa0f82caf1f6e805cfaeb43a103 100644
--- a/chrome/browser/media/media_internals.h
+++ b/chrome/browser/media/media_internals.h
@@ -14,6 +14,10 @@
 
 class MediaInternalsObserver;
 
+namespace media {
+struct MediaLogEvent;
+}
+
 // This class stores information about currently active media.
 // All of its methods are called on the IO thread.
 class MediaInternals : public MediaObserver, public base::NonThreadSafe {
@@ -26,6 +30,7 @@ class MediaInternals : public MediaObserver, public base::NonThreadSafe {
   virtual void OnSetAudioStreamStatus(void* host, int stream_id,
                                       const std::string& status);
   virtual void OnSetAudioStreamVolume(void* host, int stream_id, double volume);
+  virtual void OnMediaEvent(int source, const media::MediaLogEvent& event);
 
   // Methods for observers.
   // Observers should add themselves on construction and remove themselves