[cros] Use ScheduleSavePersistentPrefs instead of SavePersistentPrefs.

chrome/browser/chromeos/accessibility_util.cc

Index: chrome/browser/chromeos/accessibility_util.cc
diff --git a/chrome/browser/chromeos/accessibility_util.cc b/chrome/browser/chromeos/accessibility_util.cc
index a46327aee3db8ff1f753e7f110c63b2b03f3db60..90825e17000f4345b8da714c4b0e88155cddf047 100644
--- a/chrome/browser/chromeos/accessibility_util.cc
+++ b/chrome/browser/chromeos/accessibility_util.cc
@@ -93,11 +93,7 @@ void EnableAccessibility(bool enabled, WebUI* login_web_ui) {
 
   g_browser_process->local_state()->SetBoolean(
       prefs::kAccessibilityEnabled, enabled);
-  // Explicitly call SavePersistentPrefs instead of ScheduleSavePersistentPrefs
-  // so that this change gets written immediately, in case the user shuts
-  // down right now.  TODO(dmazzoni) switch this back to
-  // ScheduleSavePersistentPrefs once http://crosbug.com/19491 is fixed.
-  g_browser_process->local_state()->SavePersistentPrefs();
+  g_browser_process->local_state()->ScheduleSavePersistentPrefs();
   ExtensionAccessibilityEventRouter::GetInstance()->
       SetAccessibilityEnabled(enabled);