Adds async interface method to PersistentPrefStore.

chrome/browser/prefs/pref_value_store.h

 // 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.
 
 #ifndef CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_
 #define CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 137 matching lines @@
     void Initialize(PrefValueStore* store,
                     PrefStore* pref_store,
                     PrefStoreType type);
 
     PrefStore* store() { return pref_store_.get(); }
     const PrefStore* store() const { return pref_store_.get(); }
 
    private:
     // PrefStore::Observer implementation.
     virtual void OnPrefValueChanged(const std::string& key);
-    virtual void OnInitializationCompleted();
+    virtual void OnInitializationCompleted(bool succeeded);
 
     // PrefValueStore this keeper is part of.
     PrefValueStore* pref_value_store_;
 
     // The PrefStore managed by this keeper.
     scoped_refptr<PrefStore> pref_store_;
 
     // Type of the pref store.
     PrefStoreType type_;
 
@@ skipping 38 matching lines @@
   // the user-visible pref value has changed. Triggers the change notification
   // if the effective value of the preference has changed, or if the store
   // controlling the pref has changed.
   void NotifyPrefChanged(const char* path, PrefStoreType new_store);
 
   // Called from the PrefStoreKeeper implementation when a pref value for |key|
   // changed in the pref store for |type|.
   void OnPrefValueChanged(PrefStoreType type, const std::string& key);
 
   // Handle the event that the store for |type| has completed initialization.
-  void OnInitializationCompleted(PrefStoreType type);
+  void OnInitializationCompleted(PrefStoreType type, bool succeeded);
 
   // Initializes a pref store keeper. Sets up a PrefStoreKeeper that will take
   // ownership of the passed |pref_store|.
   void InitPrefStore(PrefStoreType type, PrefStore* pref_store);
 
   // Checks whether initialization is completed and tells the notifier if that
   // is the case.
   void CheckInitializationCompleted();
 
   // Get the PrefStore pointer for the given type. May return NULL if there is
@@ skipping 12 matching lines @@
   PrefModelAssociator* pref_sync_associator_;
 
   // Used for generating PREF_CHANGED and PREF_INITIALIZATION_COMPLETED
   // notifications. This is a weak reference, since the notifier is owned by the
   // corresponding PrefService.
   PrefNotifier* pref_notifier_;
 
   // A mapping of preference names to their registered types.
   PrefTypeMap pref_types_;
 
+  // True if not all of the PrefStores were initialized successfully.
+  bool initialization_failed_;
+
   DISALLOW_COPY_AND_ASSIGN(PrefValueStore);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_