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

media/filters/omx_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_OMX_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_OMX_VIDEO_DECODER_H_
 
 #include <queue>
 
 #include "media/base/filters.h"
@@ skipping 16 matching lines @@
   OmxVideoDecoder(MessageLoop* message_loop,
                   VideoDecodeContext* decode_context);
   virtual ~OmxVideoDecoder();
 
   // Filter implementations.
   virtual void Initialize(DemuxerStream* stream,
                           FilterCallback* callback,
                           StatisticsCallback* stats_callback);
   virtual void Stop(FilterCallback* callback);
   virtual void Flush(FilterCallback* callback);
-  virtual void Seek(base::TimeDelta time, FilterCallback* callback);
+  virtual void Seek(base::TimeDelta time, const FilterStatusCB& cb);
   virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> frame);
   virtual bool ProvidesBuffer();
   virtual const MediaFormat& media_format();
 
  private:
   // VideoDecodeEngine::EventHandler interface.
   virtual void OnInitializeComplete(const VideoCodecInfo& info);
   virtual void OnUninitializeComplete();
   virtual void OnFlushComplete();
   virtual void OnSeekComplete();
@@ skipping 12 matching lines @@
 
   // Pointer to the demuxer stream that will feed us compressed buffers.
   scoped_refptr<DemuxerStream> demuxer_stream_;
   scoped_ptr<VideoDecodeEngine> decode_engine_;
   scoped_ptr<VideoDecodeContext> decode_context_;
   MediaFormat media_format_;
 
   scoped_ptr<FilterCallback> initialize_callback_;
   scoped_ptr<FilterCallback> uninitialize_callback_;
   scoped_ptr<FilterCallback> flush_callback_;
-  scoped_ptr<FilterCallback> seek_callback_;
+  FilterStatusCB seek_cb_;
   scoped_ptr<StatisticsCallback> statistics_callback_;
 
   VideoCodecInfo info_;
 
   PtsStream pts_stream_;  // Stream of presentation timestamps.
 
   DISALLOW_COPY_AND_ASSIGN(OmxVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_OMX_VIDEO_DECODER_H_