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

content/browser/renderer_host/media/media_observer.h

Index: content/browser/renderer_host/media/media_observer.h
diff --git a/content/browser/renderer_host/media/media_observer.h b/content/browser/renderer_host/media/media_observer.h
index 50e42e085f9111bb5f9014366063bc11786ff5b1..8755c405c37ac364f322dab7325ee96fc6b70b70 100644
--- a/content/browser/renderer_host/media/media_observer.h
+++ b/content/browser/renderer_host/media/media_observer.h
@@ -6,6 +6,8 @@
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_OBSERVER_H_
 #pragma once
 
+#include "media/base/media_log.h"

[jam, 2011/07/29 16:08:55]

the C++ style guide advises against inner classes specifically for this reason,
i.e. they can't be forward declared.

MediaLog::Event should be in its own header and named MediaLogEvent

[Scott Franklin, 2011/07/29 22:30:25]

Done.

+
 // A class may implement MediaObserver and register itself with ResourceContext
 // to receive callbacks as media events occur.
 class MediaObserver {
@@ -27,6 +29,9 @@ class MediaObserver {
   // Called when the volume of an audio stream is set.
   virtual void OnSetAudioStreamVolume(void* host, int stream_id,
                                       double volume) = 0;
+
+  // Called when a MediaEvent occurs.
+  virtual void OnMediaEvent(const media::MediaLog::Event& event) = 0;
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_OBSERVER_H_