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..6b9114bba0828411e09bced161faeb5c69b5ca68 100644
--- a/chrome/browser/media/media_internals.h
+++ b/chrome/browser/media/media_internals.h
@@ -11,6 +11,7 @@
 #include "base/threading/non_thread_safe.h"
 #include "base/values.h"
 #include "content/browser/renderer_host/media/media_observer.h"
+#include "media/base/media_log.h"
 
 class MediaInternalsObserver;
 
@@ -26,6 +27,7 @@ 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(const media::MediaLog::Event& event);
 
   // Methods for observers.
   // Observers should add themselves on construction and remove themselves