Refactor VideoDestinationHandler to implement MediaStreamVideoSource.

content/renderer/media/mock_media_stream_video_sink.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_MEDIA_MOCK_MEDIA_STREAM_VIDEO_SINK_H_
+#define CONTENT_RENDERER_MEDIA_MOCK_MEDIA_STREAM_VIDEO_SINK_H_
+
+#include "content/public/renderer/media_stream_video_sink.h"
+
+namespace content {
+
+class MockMediaStreamVideoSink : public MediaStreamVideoSink {
+ public:
+  MockMediaStreamVideoSink();
+
+  virtual void OnVideoFrame(
+      const scoped_refptr<media::VideoFrame>& frame) OVERRIDE;
+  virtual void OnReadyStateChanged(
+        blink::WebMediaStreamSource::ReadyState state) OVERRIDE;
+  virtual void OnEnabledChanged(bool enabled) OVERRIDE;
+
+  int number_of_frames() const { return number_of_frames_; }
+  bool enabled() const { return enabled_; }
+  blink::WebMediaStreamSource::ReadyState state() const { return state_; }
+
+ private:
+  int number_of_frames_;
+  bool enabled_;
+  blink::WebMediaStreamSource::ReadyState state_;
+};
+
+}  // namespace content
+
+#endif