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

media/audio/audio_io.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_AUDIO_AUDIO_IO_H_
 #define MEDIA_AUDIO_AUDIO_IO_H_
 
 #include "base/basictypes.h"
 #include "media/audio/audio_buffers_state.h"
 
@@ skipping 47 matching lines @@
    public:
     virtual ~AudioSourceCallback() {}
 
     // Provide more data by filling |dest| up to |max_size| bytes. The provided
     // buffer size is determined by the |samples_per_packet| specified in
     // AudioParameters when the stream is created. The source will return
     // the number of bytes it filled. The expected structure of |dest| is
     // platform and format specific.
     // |buffers_state| contains current state of the buffers, and can be used
     // by the source to calculate delay.
-    virtual uint32 OnMoreData(
-        AudioOutputStream* stream, uint8* dest, uint32 max_size,
-        AudioBuffersState buffers_state) = 0;
+    virtual uint32 OnMoreData(uint8* dest,
+                              uint32 max_size,
+                              AudioBuffersState buffers_state) = 0;
 
     // There was an error while playing a buffer. Audio source cannot be
     // destroyed yet. No direct action needed by the AudioStream, but it is
     // a good place to stop accumulating sound data since is is likely that
     // playback will not continue. |code| is an error code that is platform
     // specific.
     virtual void OnError(AudioOutputStream* stream, int code) = 0;
 
     // Waits till data becomes available. Used when buffering data starting
     // new audio stream.
@@ skipping 91 matching lines @@
   // Sets the Automatic Gain Control (AGC) state.
   virtual void SetAutomaticGainControl(bool enabled) = 0;
 
   // Returns the Automatic Gain Control (AGC) state.
   virtual bool GetAutomaticGainControl() = 0;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_IO_H_