Convert Filter::Seek() to use new callback system.

media/filters/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 MEDIA_FILTERS_RTC_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_RTC_VIDEO_DECODER_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 18 matching lines @@
 namespace media {
 
 class RTCVideoDecoder : public VideoDecoder,
                         public ExternalRenderer {
  public:
   RTCVideoDecoder(MessageLoop* message_loop, const std::string& url);
   virtual ~RTCVideoDecoder();
 
   // Filter implementation.
   virtual void Play(FilterCallback* callback);
-  virtual void Seek(base::TimeDelta time, FilterCallback* callback);
+  virtual void Seek(base::TimeDelta time, const FilterStatusCB& cb);
   virtual void Pause(FilterCallback* callback);
   virtual void Stop(FilterCallback* callback);
 
   // Decoder implementation.
   virtual void Initialize(DemuxerStream* demuxer_stream,
                           FilterCallback* filter_callback,
                           StatisticsCallback* stat_callback);
   virtual const MediaFormat& media_format();
   virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> video_frame);
   virtual bool ProvidesBuffer();
@@ skipping 34 matching lines @@
   std::deque<scoped_refptr<VideoFrame> > frame_queue_available_;
   // Used for accessing frame queue from another thread.
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_RTC_VIDEO_DECODER_H_
-