cros: Enable new cras audio handler by default

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 1ead091f1bea88bb3fe085bf316656d87ff0d900..c7a13962e63ca3205cb1650577b39d8fa9d0fe99 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -272,6 +272,11 @@ void RunAutoLaunchKioskApp() {
       EmitLoginPromptVisible();
 }
 
+bool UseNewAudioHandler() {
+  return !CommandLine::ForCurrentProcess()->
+      HasSwitch(ash::switches::kAshDisableNewAudioHandler);
+}
+
 }  // namespace
 
 namespace internal {
@@ -472,8 +477,7 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopStart() {
 // Threads are initialized between MainMessageLoopStart and MainMessageLoopRun.
 // about_flags settings are applied in ChromeBrowserMainParts::PreCreateThreads.
 void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
-  if (CommandLine::ForCurrentProcess()->
-          HasSwitch(ash::switches::kAshEnableNewAudioHandler)) {
+  if (UseNewAudioHandler()) {
    CrasAudioHandler::Initialize(
        AudioPrefHandler::Create(g_browser_process->local_state()));
   } else {
@@ -796,8 +800,7 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
   // even if Initialize() wasn't called.
   SystemKeyEventListener::Shutdown();
   imageburner::BurnManager::Shutdown();
-  if (CommandLine::ForCurrentProcess()->
-          HasSwitch(ash::switches::kAshEnableNewAudioHandler)) {
+  if (UseNewAudioHandler()) {
     CrasAudioHandler::Shutdown();
   } else {
     AudioHandler::Shutdown();