[Invalidations] Add GetInvalidatorState() to Invalidator{,Frontend}

chrome/browser/extensions/api/push_messaging/push_messaging_invalidation_handler.h

 // Copyright (c) 2012 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_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 22 matching lines @@
       InvalidationFrontend* service,
       PushMessagingInvalidationHandlerDelegate* delegate,
       const std::set<std::string>& extension_ids);
   virtual ~PushMessagingInvalidationHandler();
 
   // PushMessagingInvalidationMapper implementation.
   virtual void RegisterExtension(const std::string& extension_id) OVERRIDE;
   virtual void UnregisterExtension(const std::string& extension_id) OVERRIDE;
 
   // InvalidationHandler implementation.
-  virtual void OnNotificationsEnabled() OVERRIDE;
-  virtual void OnNotificationsDisabled(
-      syncer::NotificationsDisabledReason reason) OVERRIDE;
-  virtual void OnIncomingNotification(
+  virtual void OnInvalidatorStateChange(
+      syncer::InvalidatorState state) OVERRIDE;
+  virtual void OnIncomingInvalidation(
       const syncer::ObjectIdStateMap& id_state_map,
-      syncer::IncomingNotificationSource source) OVERRIDE;
+      syncer::IncomingInvalidationSource source) OVERRIDE;
 
   const std::set<std::string>& GetRegisteredExtensionsForTest() const {
     return registered_extensions_;
   }
 
  private:
   void UpdateRegistrations();
 
   base::ThreadChecker thread_checker_;
   InvalidationFrontend* const service_;
   std::set<std::string> registered_extensions_;
   PushMessagingInvalidationHandlerDelegate* const delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(PushMessagingInvalidationHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_