cros: Enable new cras audio handler by default

chrome/browser/chromeos/system/ash_system_tray_delegate.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 "chrome/browser/chromeos/system/ash_system_tray_delegate.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 100 matching lines @@
 namespace chromeos {
 
 namespace {
 
 // The minimum session length limit that can be set.
 const int kSessionLengthLimitMinMs = 30 * 1000;  // 30 seconds.
 
 // The maximum session length limit that can be set.
 const int kSessionLengthLimitMaxMs = 24 * 60 * 60 * 1000;  // 24 hours.
 
+bool UseNewAudioHandler() {
+  return !CommandLine::ForCurrentProcess()->
+      HasSwitch(ash::switches::kAshDisableNewAudioHandler);
+}
+
 ash::NetworkIconInfo CreateNetworkIconInfo(const Network* network) {
   ash::NetworkIconInfo info;
   info.name = network->type() == TYPE_ETHERNET ?
       l10n_util::GetStringUTF16(IDS_STATUSBAR_NETWORK_DEVICE_ETHERNET) :
       UTF8ToUTF16(network->name());
   info.image = NetworkMenuIcon::GetImage(network, NetworkMenuIcon::COLOR_DARK);
   info.service_path = network->service_path();
   info.connecting = network->connecting();
   info.connected = network->connected();
   info.is_cellular = network->type() == TYPE_CELLULAR;
@@ skipping 162 matching lines @@
         this,
         chrome::NOTIFICATION_CROS_ACCESSIBILITY_TOGGLE_SPOKEN_FEEDBACK,
         content::NotificationService::AllSources());
     registrar_.Add(
         this,
         chrome::NOTIFICATION_CROS_ACCESSIBILITY_TOGGLE_HIGH_CONTRAST_MODE,
         content::NotificationService::AllSources());
   }
 
   virtual void Initialize() OVERRIDE {
-    if (!CommandLine::ForCurrentProcess()->
-            HasSwitch(ash::switches::kAshEnableNewAudioHandler)) {
+    if (!UseNewAudioHandler()) {
       AudioHandler::GetInstance()->AddVolumeObserver(this);
     }
     DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(this);
     DBusThreadManager::Get()->GetPowerManagerClient()->RequestStatusUpdate(
         PowerManagerClient::UPDATE_INITIAL);
     DBusThreadManager::Get()->GetSessionManagerClient()->AddObserver(this);
 
     NetworkLibrary* crosnet = CrosLibrary::Get()->GetNetworkLibrary();
     crosnet->AddNetworkManagerObserver(this);
     OnNetworkManagerChanged(crosnet);
@@ skipping 42 matching lines @@
     policy::BrowserPolicyConnector* policy_connector =
         g_browser_process->browser_policy_connector();
     policy::DeviceCloudPolicyManagerChromeOS* policy_manager =
         policy_connector->GetDeviceCloudPolicyManager();
     if (policy_manager)
       policy_manager->core()->store()->AddObserver(this);
     UpdateEnterpriseDomain();
   }
 
   virtual ~SystemTrayDelegate() {
-    if (!CommandLine::ForCurrentProcess()->
-            HasSwitch(ash::switches::kAshEnableNewAudioHandler) &&
-         AudioHandler::GetInstance()) {
+    if (!UseNewAudioHandler() && AudioHandler::GetInstance()) {
       AudioHandler::GetInstance()->RemoveVolumeObserver(this);
     }
 
     DBusThreadManager::Get()->GetSessionManagerClient()->RemoveObserver(this);
     DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(this);
     DBusThreadManager::Get()->GetSystemClockClient()->RemoveObserver(this);
     NetworkLibrary* crosnet = CrosLibrary::Get()->GetNetworkLibrary();
     if (crosnet)
       crosnet->RemoveNetworkManagerObserver(this);
     input_method::GetInputMethodManager()->RemoveObserver(this);
@@ skipping 1237 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegate);
 };
 
 }  // namespace
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate() {
   return new chromeos::SystemTrayDelegate();
 }
 
 }  // namespace chromeos