Connect webrtc MediaSourceInterface ready states with webkit WebMediaStreamSource

content/renderer/media/media_stream_impl.h

Index: content/renderer/media/media_stream_impl.h
diff --git a/content/renderer/media/media_stream_impl.h b/content/renderer/media/media_stream_impl.h
index 1845ca09b935739d9f571df70214ce23fab2d186..5421422ffb6d8cc6f78ed49ded6b836e9025656c 100644
--- a/content/renderer/media/media_stream_impl.h
+++ b/content/renderer/media/media_stream_impl.h
@@ -31,6 +31,7 @@ class MediaStreamAudioRenderer;
 namespace content {
 class MediaStreamDependencyFactory;
 class MediaStreamDispatcher;
+class MediaStreamSourceObserver;
 class VideoCaptureImplManager;
 class WebRtcAudioRenderer;
 class WebRtcLocalAudioRenderer;
@@ -62,6 +63,11 @@ class CONTENT_EXPORT MediaStreamImpl
   // This can save some overhead time when the |url| is not media stream.
   static bool CheckMediaStream(const GURL& url);
 
+  // Release source observers from WebMediaStream. This breaks circular
+  // references to MediaStreamSource. See MediaStreamSourceObserver's comment
+  // for detail.
+  static void ReleaseSourceObservers(WebKit::WebMediaStream descriptor);
+
   // WebKit::WebUserMediaClient implementation
   virtual void requestUserMedia(
       const WebKit::WebUserMediaRequest& user_media_request,
@@ -139,6 +145,7 @@ class CONTENT_EXPORT MediaStreamImpl
         : request_id(request_id), generated(false), frame(frame),
           request(request) {
     }
+    ~UserMediaRequestInfo();
     int request_id;
     // True if MediaStreamDispatcher has generated the stream, see
     // OnStreamGenerated.