Replace VideoDecoder::media_format() with significantly simpler width()/height() methods.

content/renderer/media/rtc_video_decoder.h

 // Copyright (c) 2011 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_RTC_VIDEO_DECODER_H_
 #define CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 14 matching lines @@
   // Filter implementation.
   virtual void Play(media::FilterCallback* callback);
   virtual void Seek(base::TimeDelta time, const media::FilterStatusCB& cb);
   virtual void Pause(media::FilterCallback* callback);
   virtual void Stop(media::FilterCallback* callback);
 
   // Decoder implementation.
   virtual void Initialize(media::DemuxerStream* demuxer_stream,
                           media::FilterCallback* filter_callback,
                           media::StatisticsCallback* stat_callback);
-  virtual const media::MediaFormat& media_format();
   virtual void ProduceVideoFrame(scoped_refptr<media::VideoFrame> video_frame);
   virtual bool ProvidesBuffer();
+  virtual int width();
+  virtual int height();
 
   // cricket::VideoRenderer implementation
   virtual bool SetSize(int width, int height, int reserved);
   virtual bool RenderFrame(const cricket::VideoFrame* frame);
 
  private:
   friend class RTCVideoDecoderTest;
   FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, Initialize_Successful);
   FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, DoSeek);
   FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, DoRenderFrame);
   FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, DoSetSize);
 
   enum DecoderState {
     kUnInitialized,
     kNormal,
     kSeeking,
     kPaused,
     kStopped
   };
 
   MessageLoop* message_loop_;
   size_t width_;
   size_t height_;
   std::string url_;
   DecoderState state_;
-  media::MediaFormat media_format_;
   std::deque<scoped_refptr<media::VideoFrame> > frame_queue_available_;
   // Used for accessing frame queue from another thread.
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoDecoder);
 };
 
 #endif  // CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_H_