[Cast] Refactor/clean-up VideoReceiver to match AudioReceiver as closely as possible.

media/cast/test/utility/in_process_receiver.cc

 // 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.
 
 #include "media/cast/test/utility/in_process_receiver.h"
 
 #include "base/bind_helpers.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/time/time.h"
 #include "media/base/video_frame.h"
@@ skipping 102 matching lines @@
     pcm_frame->samples.resize(audio_frame->channels() * audio_frame->frames());
     audio_frame->ToInterleaved(
         audio_frame->frames(), sizeof(int16), &pcm_frame->samples.front());
     OnAudioFrame(pcm_frame.Pass(), playout_time);
   }
   PullNextAudioFrame();
 }
 
 void InProcessReceiver::GotVideoFrame(
     const scoped_refptr<VideoFrame>& video_frame,
-    const base::TimeTicks& render_time) {
+    const base::TimeTicks& playout_time,
+    bool is_continuous) {
   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
-  OnVideoFrame(video_frame, render_time);
+  if (video_frame) {
+    // TODO(miu): Pass |is_continuous| flag.
+    OnVideoFrame(video_frame, playout_time);
+  }
   PullNextVideoFrame();
 }
 
 void InProcessReceiver::PullNextAudioFrame() {
   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
   cast_receiver_->frame_receiver()->GetRawAudioFrame(
       base::Bind(&InProcessReceiver::GotAudioFrame,
                  weak_factory_.GetWeakPtr()));
 }
 
 void InProcessReceiver::PullNextVideoFrame() {
   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
   cast_receiver_->frame_receiver()->GetRawVideoFrame(base::Bind(
       &InProcessReceiver::GotVideoFrame, weak_factory_.GetWeakPtr()));
 }
 
 // static
 void InProcessReceiver::WillDestroyReceiver(InProcessReceiver* receiver) {
   DCHECK(receiver->cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
 }
 
 }  // namespace cast
 }  // namespace media