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

chrome/renderer/media/cast_receiver_session_delegate.cc

 // Copyright 2015 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.
 
 #include "chrome/renderer/media/cast_receiver_session_delegate.h"
 
 #include "base/synchronization/waitable_event.h"
 #include "base/values.h"
 
 CastReceiverSessionDelegate::CastReceiverSessionDelegate()
@@ skipping 78 matching lines @@
 void  CastReceiverSessionDelegate::StopVideo() {
   frame_callback_ = content::VideoCaptureDeliverFrameCB();
 }
 
 void CastReceiverSessionDelegate::OnDecodedVideoFrame(
     const scoped_refptr<media::VideoFrame>& video_frame,
     const base::TimeTicks& playout_time,
     bool is_continous) {
   if (frame_callback_.is_null())
     return;
-  frame_callback_.Run(video_frame, format_, playout_time);
+  frame_callback_.Run(video_frame, playout_time);
   cast_receiver_->RequestDecodedVideoFrame(on_video_decoded_cb_);
 }