Require Renderer::Initialize() to return a status code via callback.

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 @@
   // GetMediaTime() runs on the render main thread because it's part of JS sync
   // API.
   RendererImpl(const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
                scoped_ptr<AudioRenderer> audio_renderer,
                scoped_ptr<VideoRenderer> video_renderer);
 
   ~RendererImpl() final;
 
   // Renderer implementation.
   void Initialize(DemuxerStreamProvider* demuxer_stream_provider,
-                  const base::Closure& init_cb,
+                  const PipelineStatusCB& init_cb,
                   const StatisticsCB& statistics_cb,
                   const BufferingStateCB& buffering_state_cb,
                   const PaintCB& paint_cb,
                   const base::Closure& ended_cb,
                   const PipelineStatusCB& error_cb) final;
   void SetCdm(CdmContext* cdm_context,
               const CdmAttachedCB& cdm_attached_cb) final;
   void Flush(const base::Closure& flush_cb) final;
   void StartPlayingFrom(base::TimeDelta time) final;
   void SetPlaybackRate(float playback_rate) final;
@@ skipping 55 matching lines @@
 
   // Callbacks executed when a renderer has ended.
   void OnAudioRendererEnded();
   void OnVideoRendererEnded();
   bool PlaybackHasEnded() const;
   void RunEndedCallbackIfNeeded();
 
   // Callback executed when a runtime error happens.
   void OnError(PipelineStatus error);
 
-  void FireAllPendingCallbacks();
-
   State state_;
 
   // Task runner used to execute pipeline tasks.
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   DemuxerStreamProvider* demuxer_stream_provider_;
 
   // Permanent callbacks to notify various renderer states/stats.
   StatisticsCB statistics_cb_;
   base::Closure ended_cb_;
   PipelineStatusCB error_cb_;
   BufferingStateCB buffering_state_cb_;
   PaintCB paint_cb_;
 
   // Temporary callback used for Initialize() and Flush().
-  base::Closure init_cb_;
+  PipelineStatusCB 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_;
   scoped_ptr<WallClockTimeSource> wall_clock_time_source_;
   bool time_ticking_;
 
@@ skipping 22 matching lines @@
 
   base::WeakPtr<RendererImpl> weak_this_;
   base::WeakPtrFactory<RendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_RENDERER_IMPL_H_