Add video frame refresh to MediaStream and VideoCapture stacks.

content/renderer/media/media_stream_video_renderer_sink.cc

Index: content/renderer/media/media_stream_video_renderer_sink.cc
diff --git a/content/renderer/media/media_stream_video_renderer_sink.cc b/content/renderer/media/media_stream_video_renderer_sink.cc
index beaff401e26c62fae18b547437d22975957a7ad5..8e9eccd33f81245c689301d2434f9aad89f9fe27 100644
--- a/content/renderer/media/media_stream_video_renderer_sink.cc
+++ b/content/renderer/media/media_stream_video_renderer_sink.cc
@@ -50,13 +50,11 @@ void MediaStreamVideoRendererSink::Start() {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, STOPPED);
 
-  AddToVideoTrack(
-      this,
+  MediaStreamVideoSink::ConnectToTrack(video_track_,
       media::BindToCurrentLoop(
           base::Bind(
               &MediaStreamVideoRendererSink::OnVideoFrame,
-              weak_factory_.GetWeakPtr())),
-      video_track_);
+              weak_factory_.GetWeakPtr())));
   state_ = STARTED;
 
   if (video_track_.source().getReadyState() ==
@@ -69,7 +67,7 @@ void MediaStreamVideoRendererSink::Start() {
 void MediaStreamVideoRendererSink::Stop() {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ == STARTED || state_ == PAUSED);
-  RemoveFromVideoTrack(this, video_track_);
+  MediaStreamVideoSink::DisconnectFromTrack();
   weak_factory_.InvalidateWeakPtrs();
   state_ = STOPPED;
   frame_size_.set_width(kMinFrameSize);