Change WebMediaPlayerMS layers transparency dynamically

content/renderer/media/webmediaplayer_ms.h

 // Copyright 2013 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_WEBMEDIAPLAYER_MS_H_
 #define CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 184 matching lines @@
   const base::WeakPtr<media::WebMediaPlayerDelegate> delegate_;
   int delegate_id_;
 
   scoped_refptr<MediaStreamVideoRenderer> video_frame_provider_; // Weak
 
   std::unique_ptr<cc_blink::WebLayerImpl> video_weblayer_;
 
   scoped_refptr<MediaStreamAudioRenderer> audio_renderer_; // Weak
   media::SkCanvasVideoRenderer video_renderer_;
 
+  bool last_frame_opaque_;
   bool paused_;
   bool render_frame_suspended_;
   bool received_first_frame_;
   media::VideoRotation video_rotation_;
 
   scoped_refptr<media::MediaLog> media_log_;
 
   std::unique_ptr<MediaStreamRendererFactory> renderer_factory_;
 
   const scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_;
@@ skipping 22 matching lines @@
   // True if playback should be started upon the next call to OnShown(). Only
   // used on Android.
   bool should_play_upon_shown_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerMS);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_