Update AudioRenderer, VideoRenderer, and AudioDecoder Initialize() methods to use PipelineStatusCB.

media/base/filters.h

 // Copyright (c) 2012 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.
 
 // Filters are connected in a strongly typed manner, with downstream filters
 // always reading data from upstream filters.  Upstream filters have no clue
 // who is actually reading from them, and return the results via callbacks.
 //
 //                         DemuxerStream(Video) <- VideoDecoder <- VideoRenderer
 // DataSource <- Demuxer <
@@ skipping 156 matching lines @@
   VideoDecoder();
   virtual ~VideoDecoder();
 };
 
 
 class MEDIA_EXPORT AudioDecoder : public Filter {
  public:
   // Initialize a AudioDecoder with the given DemuxerStream, executing the
   // callback upon completion.
   // stats_callback is used to update global pipeline statistics.
-  //
-  // TODO(scherkus): switch to PipelineStatus callback.
-  virtual void Initialize(DemuxerStream* stream, const base::Closure& callback,
+  virtual void Initialize(DemuxerStream* stream,
+                          const PipelineStatusCB& callback,
                           const StatisticsCallback& stats_callback) = 0;
 
   // Request samples to be decoded and returned via the provided callback.
   // Only one read may be in flight at any given time.
   //
   // Implementations guarantee that the callback will not be called from within
   // this method.
   //
   // Non-NULL sample buffer pointers will contain decoded audio data or may
   // indicate the end of the stream. A NULL buffer pointer indicates an aborted
@@ skipping 10 matching lines @@
  protected:
   AudioDecoder();
   virtual ~AudioDecoder();
 };
 
 
 class MEDIA_EXPORT VideoRenderer : public Filter {
  public:
   // Initialize a VideoRenderer with the given VideoDecoder, executing the
   // callback upon completion.
-  virtual void Initialize(VideoDecoder* decoder, const base::Closure& callback,
+  virtual void Initialize(VideoDecoder* decoder,
+                          const PipelineStatusCB& callback,
                           const StatisticsCallback& stats_callback) = 0;
 
   // Returns true if this filter has received and processed an end-of-stream
   // buffer.
   virtual bool HasEnded() = 0;
 };
 
 
 class MEDIA_EXPORT AudioRenderer : public Filter {
  public:
   // Initialize a AudioRenderer with the given AudioDecoder, executing the
   // |init_callback| upon completion. |underflow_callback| is called when the
   // renderer runs out of data to pass to the audio card during playback.
   // If the |underflow_callback| is called ResumeAfterUnderflow() must be called
   // to resume playback. Pause(), Seek(), or Stop() cancels the underflow
   // condition.
   virtual void Initialize(AudioDecoder* decoder,
-                          const base::Closure& init_callback,
+                          const PipelineStatusCB& init_callback,
                           const base::Closure& underflow_callback) = 0;
 
   // Returns true if this filter has received and processed an end-of-stream
   // buffer.
   virtual bool HasEnded() = 0;
 
   // Sets the output volume.
   virtual void SetVolume(float volume) = 0;
 
   // Resumes playback after underflow occurs.
   // |buffer_more_audio| is set to true if you want to increase the size of the
   // decoded audio buffer.
   virtual void ResumeAfterUnderflow(bool buffer_more_audio) = 0;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_FILTERS_H_