Reduce chrome cras dbus call logs during device rebooting.

chromeos/dbus/cras_audio_client_stub_impl.cc

 // Copyright (c) 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/dbus/cras_audio_client_stub_impl.h"
 
 namespace chromeos {
 
 CrasAudioClientStubImpl::CrasAudioClientStubImpl() {}
 
@@ skipping 64 matching lines @@
 
 bool CrasAudioClientStubImpl::HasObserver(Observer* observer) {
   return observers_.HasObserver(observer);
 }
 
 void CrasAudioClientStubImpl::GetVolumeState(
     const GetVolumeStateCallback& callback) {
   callback.Run(volume_state_, true);
 }
 
-void CrasAudioClientStubImpl::GetNodes(const GetNodesCallback& callback) {
+void CrasAudioClientStubImpl::GetNodes(const GetNodesCallback& callback,
+                                       const ErrorCallback& error_callback) {
   callback.Run(node_list_, true);
 }
 
 void CrasAudioClientStubImpl::SetOutputNodeVolume(uint64 node_id,
                                                   int32 volume) {
 }
 
 void CrasAudioClientStubImpl::SetOutputUserMute(bool mute_on) {
   volume_state_.output_user_mute = mute_on;
   FOR_EACH_OBSERVER(Observer,
@@ skipping 50 matching lines @@
   for (size_t i = 0; i < audio_nodes.size(); ++i)
     node_list_.push_back(audio_nodes[i]);
 }
 
 void CrasAudioClientStubImpl::ChangeAudioNodes(const AudioNodeList& new_nodes) {
   SetAudioDevices(new_nodes);
   FOR_EACH_OBSERVER(Observer, observers_, NodesChanged());
 }
 
 }  // namespace chromeos