Replace init_cb in Renderer::Initialize() with base::Closure.

media/filters/renderer_impl.h

 // Copyright 2014 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_RENDERER_IMPL_H_
 #define MEDIA_FILTERS_RENDERER_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 26 matching lines @@
   // part of JS sync API. |get_duration_cb| is used to get the duration of the
   // stream.
   RendererImpl(const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
                Demuxer* demuxer,
                scoped_ptr<AudioRenderer> audio_renderer,
                scoped_ptr<VideoRenderer> video_renderer);
 
   virtual ~RendererImpl();
 
   // Renderer implementation.
-  virtual void Initialize(const PipelineStatusCB& init_cb,
+  virtual void Initialize(const base::Closure& init_cb,
                           const StatisticsCB& statistics_cb,
                           const base::Closure& ended_cb,
                           const PipelineStatusCB& error_cb,
                           const BufferingStateCB& buffering_state_cb,
                           const TimeDeltaCB& get_duration_cb) OVERRIDE;
   virtual void Flush(const base::Closure& flush_cb) OVERRIDE;
   virtual void StartPlayingFrom(base::TimeDelta time) OVERRIDE;
   virtual void SetPlaybackRate(float playback_rate) OVERRIDE;
   virtual void SetVolume(float volume) OVERRIDE;
   virtual base::TimeDelta GetMediaTime() OVERRIDE;
@@ skipping 75 matching lines @@
   // Permanent callback to get the media duration.
   TimeDeltaCB get_duration_cb_;
 
   // Permanent callbacks to notify various renderer states/stats.
   StatisticsCB statistics_cb_;
   base::Closure ended_cb_;
   PipelineStatusCB error_cb_;
   BufferingStateCB buffering_state_cb_;
 
   // Temporary callback used for Initialize() and Flush().
-  PipelineStatusCB init_cb_;
+  base::Closure init_cb_;
   base::Closure flush_cb_;
 
   scoped_ptr<AudioRenderer> audio_renderer_;
   scoped_ptr<VideoRenderer> video_renderer_;
 
   // Renderer-provided time source used to control playback.
   TimeSource* time_source_;
 
   // The time to start playback from after starting/seeking has completed.
   base::TimeDelta start_time_;
@@ skipping 36 matching lines @@
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<RendererImpl> weak_factory_;
   base::WeakPtr<RendererImpl> weak_this_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_RENDERER_IMPL_H_