Moving SwitchOutputDevice out of OutputDevice interface, eliminating OutputDevice

media/audio/clockless_audio_sink.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 "media/audio/clockless_audio_sink.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/simple_thread.h"
@@ skipping 103 matching lines @@
 
   playing_ = false;
   playback_time_ = thread_->Stop();
 }
 
 bool ClocklessAudioSink::SetVolume(double volume) {
   // Audio is always muted.
   return volume == 0.0;
 }
 
-OutputDevice* ClocklessAudioSink::GetOutputDevice() {
-  return nullptr;
+OutputDeviceInfo ClocklessAudioSink::GetOutputDeviceInfo() {
+  return OutputDeviceInfo();
 }
 
 void ClocklessAudioSink::StartAudioHashForTesting() {
   DCHECK(!initialized_);
   hashing_ = true;
 }
 
 std::string ClocklessAudioSink::GetAudioHashForTesting() {
   return thread_ && hashing_ ? thread_->GetAudioHash() : std::string();
 }
 
 }  // namespace media