Implement new invalidations ack tracking system

chrome/browser/invalidation/ticl_invalidation_service.h

 // Copyright (c) 2013 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_INVALIDATION_TICL_INVALIDATION_SERVICE_H_
 #define CHROME_BROWSER_INVALIDATION_TICL_INVALIDATION_SERVICE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/timer/timer.h"
@@ skipping 36 matching lines @@
 
   // InvalidationService implementation.
   // It is an error to have registered handlers when Shutdown() is called.
   virtual void RegisterInvalidationHandler(
       syncer::InvalidationHandler* handler) OVERRIDE;
   virtual void UpdateRegisteredInvalidationIds(
       syncer::InvalidationHandler* handler,
       const syncer::ObjectIdSet& ids) OVERRIDE;
   virtual void UnregisterInvalidationHandler(
       syncer::InvalidationHandler* handler) OVERRIDE;
-  virtual void AcknowledgeInvalidation(
-      const invalidation::ObjectId& id,
-      const syncer::AckHandle& ack_handle) OVERRIDE;
   virtual syncer::InvalidatorState GetInvalidatorState() const OVERRIDE;
   virtual std::string GetInvalidatorClientId() const OVERRIDE;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   void RequestAccessToken();
 
@@ skipping 53 matching lines @@
   scoped_ptr<OAuth2TokenService::Request> access_token_request_;
   base::OneShotTimer<TiclInvalidationService> request_access_token_retry_timer_;
   net::BackoffEntry request_access_token_backoff_;
 
   DISALLOW_COPY_AND_ASSIGN(TiclInvalidationService);
 };
 
 }  // namespace invalidation
 
 #endif  // CHROME_BROWSER_INVALIDATION_TICL_INVALIDATION_SERVICE_H_