Remove unused flush operation from Chromium audio.

media/base/audio_renderer_mixer_input.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/base/audio_renderer_mixer_input.h"
 
 #include "base/logging.h"
 #include "media/base/audio_renderer_mixer.h"
 
 namespace media {
@@ skipping 44 matching lines @@
 void AudioRendererMixerInput::Play() {
   DCHECK(initialized_);
 
   if (playing_)
     return;
 
   mixer_->AddMixerInput(this);
   playing_ = true;
 }
 
-void AudioRendererMixerInput::Pause(bool /* flush */) {
+void AudioRendererMixerInput::Pause() {
   DCHECK(initialized_);
 
   if (!playing_)
     return;
 
   mixer_->RemoveMixerInput(this);
   playing_ = false;
 }
 
 bool AudioRendererMixerInput::SetVolume(double volume) {
@@ skipping 14 matching lines @@
   }
 
   return frames_filled > 0 ? volume_ : 0;
 }
 
 void AudioRendererMixerInput::OnRenderError() {
   callback_->OnRenderError();
 }
 
 }  // namespace media