Clean up the media stream audio track code

content/renderer/media/peer_connection_audio_sink_owner.cc

-// Copyright 2013 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/peer_connection_audio_sink_owner.h"
-
-#include "content/renderer/media/webrtc_audio_device_impl.h"
-
-namespace content {
-
-PeerConnectionAudioSinkOwner::PeerConnectionAudioSinkOwner(
-    PeerConnectionAudioSink* sink)
-    : delegate_(sink) {
-}
-
-int PeerConnectionAudioSinkOwner::OnData(const int16* audio_data,
-                                         int sample_rate,
-                                         int number_of_channels,
-                                         int number_of_frames,
-                                         const std::vector<int>& channels,
-                                         int audio_delay_milliseconds,
-                                         int current_volume,
-                                         bool need_audio_processing,
-                                         bool key_pressed) {
-  base::AutoLock lock(lock_);
-  if (delegate_) {
-    return delegate_->OnData(audio_data,
-                             sample_rate,
-                             number_of_channels,
-                             number_of_frames,
-                             channels,
-                             audio_delay_milliseconds,
-                             current_volume,
-                             need_audio_processing,
-                             key_pressed);
-  }
-
-  return 0;
-}
-
-void PeerConnectionAudioSinkOwner::OnSetFormat(
-    const media::AudioParameters& params) {
-  base::AutoLock lock(lock_);
-  if (delegate_)
-    delegate_->OnSetFormat(params);
-}
-
-void PeerConnectionAudioSinkOwner::OnReadyStateChanged(
-    blink::WebMediaStreamSource::ReadyState state) {
-  // Not forwarded at the moment.
-}
-
-void PeerConnectionAudioSinkOwner::Reset() {
-  base::AutoLock lock(lock_);
-  delegate_ = NULL;
-}
-
-bool PeerConnectionAudioSinkOwner::IsEqual(
-    const MediaStreamAudioSink* other) const {
-  DCHECK(other);
-  return false;
-}
-
-bool PeerConnectionAudioSinkOwner::IsEqual(
-    const PeerConnectionAudioSink* other) const {
-  DCHECK(other);
-  base::AutoLock lock(lock_);
-  return (other == delegate_);
-}
-
-}  // namespace content