Remove AudioBuffersState usage in Chromium

media/audio/virtual_audio_output_stream.cc

 // 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.
 
 #include "media/audio/virtual_audio_output_stream.h"
 
 #include "base/logging.h"
 #include "media/audio/virtual_audio_input_stream.h"
 
 namespace media {
@@ skipping 59 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   *volume = volume_;
 }
 
 double VirtualAudioOutputStream::ProvideInput(AudioBus* audio_bus,
                                               base::TimeDelta buffer_delay) {
   // Note: This method may be invoked on any one thread, depending on the
   // platform.
   DCHECK(callback_);
 
-  const int frames = callback_->OnMoreData(audio_bus, AudioBuffersState());
+  const int frames = callback_->OnMoreData(audio_bus, 0);
   if (frames < audio_bus->frames())
     audio_bus->ZeroFramesPartial(frames, audio_bus->frames() - frames);
 
   return frames > 0 ? volume_ : 0;
 }
 
 }  // namespace media