Add AudioManager::GetAudioOutputDeviceNames and implement for pulseaudio.

media/audio/mock_audio_manager.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/audio/mock_audio_manager.h"
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "media/audio/audio_parameters.h"
 
@@ skipping 18 matching lines @@
   return string16();
 }
 
 void MockAudioManager::ShowAudioInputSettings() {
 }
 
 void MockAudioManager::GetAudioInputDeviceNames(
       media::AudioDeviceNames* device_names) {
 }
 
+void MockAudioManager::GetAudioOutputDeviceNames(
+      media::AudioDeviceNames* device_names) {
+}
+
 media::AudioOutputStream* MockAudioManager::MakeAudioOutputStream(
     const media::AudioParameters& params,
     const std::string& device_id,
     const std::string& input_device_id) {
   NOTREACHED();
   return NULL;
 }
 
 media::AudioOutputStream* MockAudioManager::MakeAudioOutputStreamProxy(
     const media::AudioParameters& params,
@@ skipping 39 matching lines @@
     const std::string& device_id) {
   return AudioParameters();
 }
 
 std::string MockAudioManager::GetAssociatedOutputDeviceID(
     const std::string& input_device_id) {
   return std::string();
 }
 
 }  // namespace media.