Remove GetVolume from media::AudioRendererSink.

content/renderer/media/render_audiosourceprovider.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 "content/renderer/media/render_audiosourceprovider.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "content/renderer/media/audio_device_factory.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAudioSourceProviderClient.h"
 
 using content::AudioDeviceFactory;
 using std::vector;
 using WebKit::WebVector;
 
 RenderAudioSourceProvider::RenderAudioSourceProvider()
     : is_initialized_(false),
       channels_(0),
       sample_rate_(0),
       is_running_(false),
-      volume_(1.0),
       renderer_(NULL),
       client_(NULL) {
   // We create the AudioDevice here using the factory. But we don't yet know
   // the audio format (sample-rate, etc.) at this point.  Later, when
   // Initialize() is called, we have the audio format information and call
   // the AudioDevice::Initialize() method to fully initialize it.
   default_sink_ = AudioDeviceFactory::Create();
 }
 
 void RenderAudioSourceProvider::setClient(
@@ skipping 75 matching lines @@
 void RenderAudioSourceProvider::SetPlaybackRate(float rate) {
   base::AutoLock auto_lock(sink_lock_);
   if (!client_)
     default_sink_->SetPlaybackRate(rate);
 }
 
 bool RenderAudioSourceProvider::SetVolume(double volume) {
   base::AutoLock auto_lock(sink_lock_);
   if (!client_)
     default_sink_->SetVolume(volume);
-  volume_ = volume;
   return true;
 }
 
-void RenderAudioSourceProvider::GetVolume(double* volume) {
-  if (!client_)
-    default_sink_->GetVolume(volume);
-  else if (volume)
-    *volume = volume_;
-}
-
 void RenderAudioSourceProvider::Initialize(
     const media::AudioParameters& params,
     RenderCallback* renderer) {
   base::AutoLock auto_lock(sink_lock_);
   CHECK(!is_initialized_);
   renderer_ = renderer;
 
   default_sink_->Initialize(params, renderer);
 
   // Keep track of the format in case the client hasn't yet been set.
   channels_ = params.channels();
   sample_rate_ = params.sample_rate();
 
   if (client_) {
     // Inform WebKit about the audio stream format.
     client_->setFormat(channels_, sample_rate_);
   }
 
   is_initialized_ = true;
 }
 
 RenderAudioSourceProvider::~RenderAudioSourceProvider() {}