Remove GetVolume from media::AudioRendererSink.

content/renderer/media/audio_device.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/audio_device.h"
 
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time.h"
@@ skipping 23 matching lines @@
   virtual void Process(int pending_data) OVERRIDE;
 
  private:
   AudioRendererSink::RenderCallback* render_callback_;
   DISALLOW_COPY_AND_ASSIGN(AudioThreadCallback);
 };
 
 AudioDevice::AudioDevice()
     : ScopedLoopObserver(ChildProcess::current()->io_message_loop()),
       callback_(NULL),
-      volume_(1.0),
       stream_id_(0),
       play_on_start_(true),
       is_started_(false) {
   // Use the filter instance already created on the main render thread.
   CHECK(AudioMessageFilter::Get()) << "Invalid audio message filter.";
   filter_ = AudioMessageFilter::Get();
 }
 
 void AudioDevice::Initialize(const media::AudioParameters& params,
                              RenderCallback* callback) {
@@ skipping 41 matching lines @@
 
 bool AudioDevice::SetVolume(double volume) {
   if (volume < 0 || volume > 1.0)
     return false;
 
   if (!message_loop()->PostTask(FROM_HERE,
           base::Bind(&AudioDevice::SetVolumeOnIOThread, this, volume))) {
     return false;
   }
 
-  volume_ = volume;
-
   return true;
 }
 
-void AudioDevice::GetVolume(double* volume) {
-  // Return a locally cached version of the current scaling factor.
-  *volume = volume_;
-}
-
 void AudioDevice::CreateStreamOnIOThread(const media::AudioParameters& params) {
   DCHECK(message_loop()->BelongsToCurrentThread());
   // Make sure we don't create the stream more than once.
   DCHECK_EQ(0, stream_id_);
   if (stream_id_)
     return;
 
   stream_id_ = filter_->AddDelegate(this);
   Send(new AudioHostMsg_CreateStream(stream_id_, params));
 }
@@ skipping 155 matching lines @@
   // TODO(crogers/vrk): Figure out a way to avoid the float -> int -> float
   // conversions that happen in the <audio> and WebRTC scenarios.
   media::InterleaveFloatToInt(audio_data_, shared_memory_.memory(),
       audio_parameters_.frames_per_buffer(),
       audio_parameters_.bits_per_sample() / 8);
 
   // Let the host know we are done.
   media::SetActualDataSizeInBytes(&shared_memory_, memory_length_,
       num_frames * audio_parameters_.GetBytesPerFrame());
 }