Implement Invalidator::Acknowledge

sync/notifier/invalidation_notifier.h

 // Copyright 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.
 //
 // An implementation of Invalidator that wraps an invalidation
 // client.  Handles the details of connecting to XMPP and hooking it
 // up to the invalidation client.
 //
 // You probably don't want to use this directly; use
-// NonBlockingInvalidationNotifier.
+// NonBlockingInvalidator.
 
 #ifndef SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
 #define SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
@@ skipping 27 matching lines @@
           invalidation_state_tracker,
       const std::string& client_info);
 
   virtual ~InvalidationNotifier();
 
   // Invalidator implementation.
   virtual void RegisterHandler(InvalidationHandler* handler) OVERRIDE;
   virtual void UpdateRegisteredIds(InvalidationHandler* handler,
                                    const ObjectIdSet& ids) OVERRIDE;
   virtual void UnregisterHandler(InvalidationHandler* handler) OVERRIDE;
+  virtual void Acknowledge(const invalidation::ObjectId& id,
+                           const AckHandle& ack_handle) OVERRIDE;
   virtual InvalidatorState GetInvalidatorState() const OVERRIDE;
   virtual void SetUniqueId(const std::string& unique_id) OVERRIDE;
   virtual void UpdateCredentials(
       const std::string& email, const std::string& token) OVERRIDE;
   virtual void SendInvalidation(
       const ObjectIdInvalidationMap& invalidation_map) OVERRIDE;
 
   // SyncInvalidationListener::Delegate implementation.
   virtual void OnInvalidate(
       const ObjectIdInvalidationMap& invalidation_map) OVERRIDE;
@@ skipping 31 matching lines @@
 
   // The invalidation listener.
   SyncInvalidationListener invalidation_listener_;
 
   DISALLOW_COPY_AND_ASSIGN(InvalidationNotifier);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_