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

content/renderer/pepper/pepper_media_stream_video_track_host.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_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/renderer/media_stream_video_sink.h"
@@ skipping 38 matching lines @@
 
   // PepperMediaStreamTrackHostBase overrides:
   void OnClose() override;
   int32_t OnHostMsgEnqueueBuffer(ppapi::host::HostMessageContext* context,
                                  int32_t index) override;
 
   // Sends frame with |index| to |track_|.
   int32_t SendFrameToTrack(int32_t index);
 
   void OnVideoFrame(const scoped_refptr<media::VideoFrame>& frame,
-                    const media::VideoCaptureFormat& format,
                     const base::TimeTicks& estimated_capture_time);
 
   // MediaStreamVideoSource overrides:
   void GetCurrentSupportedFormats(
       int max_requested_width,
       int max_requested_height,
       double max_requested_frame_rate,
       const VideoCaptureDeviceFormatsCB& callback) override;
 
   void StartSourceImpl(
@@ skipping 54 matching lines @@
   scoped_refptr<FrameDeliverer> frame_deliverer_;
 
   base::WeakPtrFactory<PepperMediaStreamVideoTrackHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperMediaStreamVideoTrackHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_