cros: Enable new cras audio handler by default

chromeos/audio/mock_cras_audio_handler.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 "chromeos/audio/mock_cras_audio_handler.h"
+
+#include "chromeos/audio/audio_pref_handler.h"
+
+namespace chromeos {
+
+void MockCrasAudioHandler::AddAudioObserver(AudioObserver* observer) {
+}
+
+void MockCrasAudioHandler::RemoveAudioObserver(AudioObserver* observer) {
+}
+
+bool MockCrasAudioHandler::IsOutputMuted() {
+  return false;
+}
+
+bool MockCrasAudioHandler::IsInputMuted() {
+  return false;
+}
+
+int MockCrasAudioHandler::GetOutputVolumePercent() {
+  return 0;
+}
+
+uint64 MockCrasAudioHandler::GetActiveOutputNode() const {
+  return 0;
+}
+
+uint64 MockCrasAudioHandler::GetActiveInputNode() const {
+  return 0;
+}
+
+void MockCrasAudioHandler::GetAudioDevices(AudioDeviceList* device_list) const {
+}
+
+bool MockCrasAudioHandler::GetActiveOutputDevice(AudioDevice* device) const {
+  return false;
+}
+
+bool MockCrasAudioHandler::has_alternative_input() const {
+  return false;
+}
+
+bool MockCrasAudioHandler::has_alternative_output() const {
+  return false;
+}
+
+void MockCrasAudioHandler::SetOutputVolumePercent(int volume_percent) {
+}
+
+void MockCrasAudioHandler::AdjustOutputVolumeByPercent(int adjust_by_percent) {
+}
+
+void MockCrasAudioHandler::SetOutputMute(bool mute_on) {
+}
+
+void MockCrasAudioHandler::SetInputMute(bool mute_on) {
+}
+
+void MockCrasAudioHandler::SetActiveOutputNode(uint64 node_id) {
+}
+
+void MockCrasAudioHandler::SetActiveInputNode(uint64 node_id) {
+}
+
+MockCrasAudioHandler::MockCrasAudioHandler() : CrasAudioHandler(NULL) {
+}
+
+MockCrasAudioHandler::~MockCrasAudioHandler() {
+}
+
+}  // namespace chromeos