Remove unused parameter "stream" from all variants of OnMoreData().

media/audio/audio_output_mixer.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.
 
 // AudioOutputMixer is a class that implements browser-side audio mixer.
 // AudioOutputMixer implements both AudioOutputDispatcher and
 // AudioSourceCallback interfaces.
 
 #ifndef MEDIA_AUDIO_AUDIO_OUTPUT_MIXER_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_MIXER_H_
@@ skipping 25 matching lines @@
   virtual bool OpenStream() OVERRIDE;
   virtual bool StartStream(AudioOutputStream::AudioSourceCallback* callback,
                            AudioOutputProxy* stream_proxy) OVERRIDE;
   virtual void StopStream(AudioOutputProxy* stream_proxy) OVERRIDE;
   virtual void StreamVolumeSet(AudioOutputProxy* stream_proxy,
                                double volume) OVERRIDE;
   virtual void CloseStream(AudioOutputProxy* stream_proxy) OVERRIDE;
   virtual void Shutdown() OVERRIDE;
 
   // AudioSourceCallback interface.
-  virtual uint32 OnMoreData(AudioOutputStream* stream,
-                            uint8* dest,
+  virtual uint32 OnMoreData(uint8* dest,
                             uint32 max_size,
                             AudioBuffersState buffers_state) OVERRIDE;
   virtual void OnError(AudioOutputStream* stream, int code) OVERRIDE;
   virtual void WaitTillDataReady() OVERRIDE;
 
  private:
   friend class base::RefCountedThreadSafe<AudioOutputMixer>;
   virtual ~AudioOutputMixer();
 
   // Called by |close_timer_|. Closes physical stream.
@@ skipping 25 matching lines @@
   // Used to post delayed tasks to ourselves that we cancel inside Shutdown().
   base::WeakPtrFactory<AudioOutputMixer> weak_this_;
   base::DelayTimer<AudioOutputMixer> close_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioOutputMixer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_MIXER_H_