Preliminary change for new rtc rendering algorithm

content/renderer/media/webmediaplayer_ms.h

Index: content/renderer/media/webmediaplayer_ms.h
diff --git a/content/renderer/media/webmediaplayer_ms.h b/content/renderer/media/webmediaplayer_ms.h
index 3254f83ab3727352363088be8e1add1fccf00027..17fa8f51479a880ed04354e2ccd90521cbd01cf8 100644
--- a/content/renderer/media/webmediaplayer_ms.h
+++ b/content/renderer/media/webmediaplayer_ms.h
@@ -58,11 +58,14 @@ class WebMediaPlayerMS
  public:
   // Construct a WebMediaPlayerMS with reference to the client, and
   // a MediaStreamClient which provides VideoFrameProvider.
-  WebMediaPlayerMS(blink::WebFrame* frame,
-                   blink::WebMediaPlayerClient* client,
-                   base::WeakPtr<media::WebMediaPlayerDelegate> delegate,
-                   media::MediaLog* media_log,
-                   scoped_ptr<MediaStreamRendererFactory> factory);
+  WebMediaPlayerMS(
+      blink::WebFrame* frame,
+      blink::WebMediaPlayerClient* client,
+      base::WeakPtr<media::WebMediaPlayerDelegate> delegate,
+      media::MediaLog* media_log,
+      scoped_ptr<MediaStreamRendererFactory> factory,
+      scoped_refptr<base::SingleThreadTaskRunner> compositor_thread);
+
   virtual ~WebMediaPlayerMS();
 
   virtual void load(LoadType load_type,
@@ -151,6 +154,14 @@ class WebMediaPlayerMS
   // Getter method to |client_|.
   blink::WebMediaPlayerClient* GetClient();
 
+  static void StopVideoFrameProviderAndWakeUpHelper(
+      cc::VideoFrameProvider::Client* client,
+      base::WaitableEvent* event);
+  static void StopVideoFrameProviderHelper(
+      cc::VideoFrameProvider::Client* client);
+  static void StartRenderingHelper(cc::VideoFrameProvider::Client* client);
+  static void StopRenderingHelper(cc::VideoFrameProvider::Client* client);
+
   blink::WebFrame* frame_;
 
   blink::WebMediaPlayer::NetworkState network_state_;
@@ -192,6 +203,7 @@ class WebMediaPlayerMS
 
   bool received_first_frame_;
   base::TimeDelta current_time_;
+  base::TimeTicks last_deadline_max_;
   unsigned total_frame_count_;
   unsigned dropped_frame_count_;
   media::SkCanvasVideoRenderer video_renderer_;
@@ -202,6 +214,9 @@ class WebMediaPlayerMS
 
   scoped_ptr<MediaStreamRendererFactory> renderer_factory_;
 
+  scoped_refptr<base::SingleThreadTaskRunner> compositor_thread_;
+  base::WaitableEvent wait_event_;
+
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerMS);
 };