Implement new invalidations ack tracking system

chrome/browser/invalidation/p2p_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.
 
 #include "base/threading/non_thread_safe.h"
 #include "chrome/browser/invalidation/invalidation_service.h"
 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
-#include "sync/notifier/object_id_invalidation_map.h"
 
 #ifndef CHROME_BROWSER_INVALIDATION_P2P_INVALIDATION_SERVICE_H_
 #define CHROME_BROWSER_INVALIDATION_P2P_INVALIDATION_SERVICE_H_
 
 namespace syncer {
 class P2PInvalidator;
 }
 
 class Profile;
 
@@ skipping 14 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;
 
   void UpdateCredentials(const std::string& username,
                          const std::string& password);
 
   void SendInvalidation(const syncer::ObjectIdSet& ids);
 
  private:
   scoped_ptr<syncer::P2PInvalidator> invalidator_;
   std::string invalidator_id_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PInvalidationService);
 };
 
 }  // namespace invalidation
 
 #endif  // CHROME_BROWSER_INVALIDATION_P2P_INVALIDATION_SERVICE_H_