Refactor AudioRendererMixer to be more generic.

media/base/audio_renderer_mixer_input.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.
 
 #ifndef MEDIA_BASE_AUDIO_RENDERER_MIXER_INPUT_H_
 #define MEDIA_BASE_AUDIO_RENDERER_MIXER_INPUT_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 17 matching lines @@
 
   // AudioRendererSink implementation.
   virtual void Start() OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void Play() OVERRIDE;
   virtual void Pause() OVERRIDE;
   virtual bool SetVolume(double volume) OVERRIDE;
   virtual void Initialize(const AudioParameters& params,
                           AudioRendererSink::RenderCallback* renderer) OVERRIDE;
 
-  // Called by AudioRendererMixer when new delay information is available.
-  void set_audio_delay_milliseconds(int audio_delay_milliseconds) {
-    current_audio_delay_milliseconds_ = audio_delay_milliseconds;
-  }
-
   // Called by AudioRendererMixer when an error occurs.
   void OnRenderError();
 
  protected:
   virtual ~AudioRendererMixerInput();
 
  private:
   friend class AudioRendererMixerInputTest;
 
   bool playing_;
@@ skipping 12 matching lines @@
   // AudioParameters received during Initialize().
   AudioParameters params_;
 
   // AudioRendererMixer provided through |get_mixer_cb_| during Initialize(),
   // guaranteed to live (at least) until |remove_mixer_cb_| is called.
   AudioRendererMixer* mixer_;
 
   // Source of audio data which is provided to the mixer.
   AudioRendererSink::RenderCallback* callback_;
 
-  // The current audio delay as last provided by AudioRendererMixer.
-  int current_audio_delay_milliseconds_;
+  // Error callback for handing to AudioRendererMixer.
+  base::Closure error_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererMixerInput);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_RENDERER_MIXER_INPUT_H_