Reland r101418: Fix aspect ratio and clarify video frame dimensions

content/renderer/media/rtc_video_decoder.h

Index: content/renderer/media/rtc_video_decoder.h
diff --git a/content/renderer/media/rtc_video_decoder.h b/content/renderer/media/rtc_video_decoder.h
index 32f9c18669f389b50ec49783b6dae88bf11531ab..99993bef983ca982f4c22537068ec22ec667b9da 100644
--- a/content/renderer/media/rtc_video_decoder.h
+++ b/content/renderer/media/rtc_video_decoder.h
@@ -40,8 +40,7 @@ class RTCVideoDecoder
                           media::StatisticsCallback* stat_callback) OVERRIDE;
   virtual void ProduceVideoFrame(
       scoped_refptr<media::VideoFrame> video_frame) OVERRIDE;
-  virtual int width() OVERRIDE;
-  virtual int height() OVERRIDE;
+  virtual gfx::Size natural_size() OVERRIDE;
 
   // cricket::VideoRenderer implementation
   virtual bool SetSize(int width, int height, int reserved) OVERRIDE;
@@ -63,8 +62,7 @@ class RTCVideoDecoder
   };
 
   MessageLoop* message_loop_;
-  size_t width_;
-  size_t height_;
+  gfx::Size visible_size_;
   std::string url_;
   DecoderState state_;
   std::deque<scoped_refptr<media::VideoFrame> > frame_queue_available_;