Adds async interface method to PersistentPrefStore.

chrome/browser/prefs/pref_notifier.h

Index: chrome/browser/prefs/pref_notifier.h
diff --git a/chrome/browser/prefs/pref_notifier.h b/chrome/browser/prefs/pref_notifier.h
index f2d9c525afc1cec8a01dc0f28c12c30c61c69cb0..f4d3a5a8039a67e24a21be811fdbdef5300e7742 100644
--- a/chrome/browser/prefs/pref_notifier.h
+++ b/chrome/browser/prefs/pref_notifier.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -21,7 +21,7 @@ class PrefNotifier {
   virtual void OnPreferenceChanged(const std::string& pref_name) = 0;
 
   // Broadcasts the intialization completed notification.
-  virtual void OnInitializationCompleted() = 0;
+  virtual void OnInitializationCompleted(bool succeeded) = 0;
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_NOTIFIER_H_