Adds async interface method to PersistentPrefStore.

chrome/browser/policy/configuration_policy_pref_store.cc

 // 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.
 
 #include "chrome/browser/policy/configuration_policy_pref_store.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 1021 matching lines @@
        ++pref) {
     FOR_EACH_OBSERVER(PrefStore::Observer, observers_,
                       OnPrefValueChanged(*pref));
   }
 
   // Update the initialization flag.
   if (!initialization_complete_ &&
       provider_->IsInitializationComplete()) {
     initialization_complete_ = true;
     FOR_EACH_OBSERVER(PrefStore::Observer, observers_,
-                      OnInitializationCompleted());
+                      OnInitializationCompleted(true));
   }
 }
 
 }  // namespace policy