chromeos: Use stl utilities from the base namespace

chromeos/audio/audio_devices_pref_handler_stub.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/audio/audio_devices_pref_handler_stub.h"
 
 #include "base/stl_util.h"
 #include "chromeos/audio/audio_device.h"
 
 namespace chromeos {
 
 AudioDevicesPrefHandlerStub::AudioDevicesPrefHandlerStub() {
 }
 
 AudioDevicesPrefHandlerStub::~AudioDevicesPrefHandlerStub() {
 }
 
 double AudioDevicesPrefHandlerStub::GetOutputVolumeValue(
     const AudioDevice* device) {
   if (!device ||
-      !ContainsKey(audio_device_volume_gain_map_, device->stable_device_id))
+      !base::ContainsKey(audio_device_volume_gain_map_,
+                         device->stable_device_id)) {
     return kDefaultOutputVolumePercent;
+  }
   return audio_device_volume_gain_map_[device->stable_device_id];
 }
 
 double AudioDevicesPrefHandlerStub::GetInputGainValue(
     const AudioDevice* device) {
   // TODO(rkc): The default value for gain is wrong. http://crbug.com/442489
   if (!device ||
-      !ContainsKey(audio_device_volume_gain_map_, device->stable_device_id))
+      !base::ContainsKey(audio_device_volume_gain_map_,
+                         device->stable_device_id)) {
     return 75.0;
+  }
   return audio_device_volume_gain_map_[device->stable_device_id];
 }
 
 void AudioDevicesPrefHandlerStub::SetVolumeGainValue(const AudioDevice& device,
                                                      double value) {
   audio_device_volume_gain_map_[device.stable_device_id] = value;
 }
 
 bool AudioDevicesPrefHandlerStub::GetMuteValue(
     const AudioDevice& device) {
@@ skipping 34 matching lines @@
 void AudioDevicesPrefHandlerStub::AddAudioPrefObserver(
     AudioPrefObserver* observer) {
 }
 
 void AudioDevicesPrefHandlerStub::RemoveAudioPrefObserver(
     AudioPrefObserver* observer) {
 }
 
 }  // namespace chromeos