Handle unsucessful JsonPrefStore initialization in SupervisedUserSettingsService.

chrome/browser/supervised_user/supervised_user_settings_service.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SETTINGS_SERVICE_H_
 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SETTINGS_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 134 matching lines @@
   // Sends the settings to all subscribers. This method should be called by the
   // subclass whenever the settings change.
   void InformSubscribers();
 
   // Used for persisting the settings. Unlike other PrefStores, this one is not
   // directly hooked up to the PrefService.
   scoped_refptr<PersistentPrefStore> store_;
 
   bool active_;
 
+  bool initialization_failed_;
+
   // A set of local settings that are fixed and not configured remotely.
   scoped_ptr<base::DictionaryValue> local_settings_;
 
   std::vector<SettingsCallback> subscribers_;
 
   scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
   scoped_ptr<syncer::SyncErrorFactory> error_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserSettingsService);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SETTINGS_SERVICE_H_