Privitize WaitTillDataReady() and DataReady().

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/message_loop_proxy.h"
 #include "media/audio/virtual_audio_input_stream.h"
 
 namespace media {
@@ skipping 56 matching lines @@
 void VirtualAudioOutputStream::GetVolume(double* volume) {
   DCHECK(message_loop_->BelongsToCurrentThread());
   *volume = volume_;
 }
 
 double VirtualAudioOutputStream::ProvideInput(AudioBus* audio_bus,
                                               base::TimeDelta buffer_delay) {
   DCHECK(message_loop_->BelongsToCurrentThread());
   DCHECK(callback_);
 
-  // A VirtualAudioInputStream with a larger buffer size may be calling this
-  // multiple times without waiting, so we need to block and ensure the data is
-  // ready to prevent glitching.
-  callback_->WaitTillDataReady();
   const int frames = callback_->OnMoreData(audio_bus, AudioBuffersState());
   if (frames < audio_bus->frames())
     audio_bus->ZeroFramesPartial(frames, audio_bus->frames() - frames);
 
   return frames > 0 ? volume_ : 0;
 }
 
 }  // namespace media