Add metadata to media::VideoFrame and plumb it through IPC/MediaStream.

content/renderer/media/video_track_adapter.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_VIDEO_TRACK_ADAPTER_H_
 #define CONTENT_RENDERER_MEDIA_VIDEO_TRACK_ADAPTER_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 32 matching lines @@
                 int max_width, int max_height,
                 double min_aspect_ratio,
                 double max_aspect_ratio,
                 double max_frame_rate);
   void RemoveTrack(const MediaStreamVideoTrack* track);
 
   // Delivers |frame| to all tracks that have registered a callback.
   // Must be called on the IO-thread.
   void DeliverFrameOnIO(
       const scoped_refptr<media::VideoFrame>& frame,
-      const media::VideoCaptureFormat& format,
       const base::TimeTicks& estimated_capture_time);
 
   const scoped_refptr<base::MessageLoopProxy>& io_message_loop() {
     DCHECK(thread_checker_.CalledOnValidThread());
     return io_message_loop_;
   }
 
   // Start monitor that frames are delivered to this object. I.E, that
   // |DeliverFrameOnIO| is called with a frame rate of |source_frame_rate|.
   // |on_muted_callback| is triggered on the main render thread.
@@ skipping 54 matching lines @@
 
   // Frame rate configured on the video source, accessed on the IO-thread.
   float source_frame_rate_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoTrackAdapter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_VIDEO_TRACK_ADAPTER_H_