preparation for recycling buffer, patch 2

media/filters/omx_video_decode_engine.h

Index: media/filters/omx_video_decode_engine.h
diff --git a/media/filters/omx_video_decode_engine.h b/media/filters/omx_video_decode_engine.h
index 7c1644f31bd55e2cc3f473ec400bb6c75d730ac5..db2c461d623321f162cef8f1deee992846a22d9c 100644
--- a/media/filters/omx_video_decode_engine.h
+++ b/media/filters/omx_video_decode_engine.h
@@ -44,9 +44,11 @@ class OmxVideoDecodeEngine :
                           Task* done_cb);
   virtual void EmptyThisBuffer(scoped_refptr<Buffer> buffer);
   virtual void FillThisBuffer(scoped_refptr<VideoFrame> video_frame);
+  virtual bool ProvidesBuffer() const;
   virtual void Stop(Task* done_cb);
   virtual void Pause(Task* done_cb);
   virtual void Flush(Task* done_cb);
+  virtual void Seek(Task* done_cb);
   virtual VideoFrame::Format GetSurfaceFormat() const;
 
   virtual State state() const;
@@ -100,6 +102,7 @@ class OmxVideoDecodeEngine :
   void StopTask(Task* task);
   void PauseTask(Task* task);
   void FlushTask(Task* task);
+  void SeekTask(Task* task);
 
   // Transition method sequence for initialization
   bool CreateComponent();