Add video frame refresh to MediaStream and VideoCapture stacks.

content/renderer/media/video_track_recorder.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 "content/renderer/media/video_track_recorder.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 376 matching lines @@
     const OnEncodedVideoCB& on_encoded_video_callback,
     int32_t bits_per_second)
     : track_(track),
       encoder_(
           new VpxEncoder(use_vp9, on_encoded_video_callback, bits_per_second)) {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   DCHECK(!track_.isNull());
   DCHECK(track_.getExtraData());
 
   // StartFrameEncode() will be called on Render IO thread.
-  AddToVideoTrack(this,
-                  base::Bind(&VideoTrackRecorder::VpxEncoder::StartFrameEncode,
-                             encoder_),
-                  track_);
+  MediaStreamVideoSink::ConnectToTrack(
+      track_,
+      base::Bind(&VideoTrackRecorder::VpxEncoder::StartFrameEncode, encoder_));
 }
 
 VideoTrackRecorder::~VideoTrackRecorder() {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
-  RemoveFromVideoTrack(this, track_);
+  MediaStreamVideoSink::DisconnectFromTrack();
   track_.reset();
 }
 
 void VideoTrackRecorder::Pause() {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   DCHECK(encoder_);
   encoder_->set_paused(true);
 }
 
 void VideoTrackRecorder::Resume() {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   DCHECK(encoder_);
   encoder_->set_paused(false);
 }
 
 void VideoTrackRecorder::OnVideoFrameForTesting(
     const scoped_refptr<media::VideoFrame>& frame,
     base::TimeTicks timestamp) {
   encoder_->StartFrameEncode(frame, timestamp);
 }
 
 }  // namespace content