Implement Invalidator::Acknowledge

chrome/browser/sync/profile_sync_service.cc

 // 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.
 
 #include "chrome/browser/sync/profile_sync_service.h"
 
 #include <cstddef>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 450 matching lines @@
     backend_->UpdateRegisteredInvalidationIds(
         invalidator_registrar_.GetAllRegisteredIds());
   }
 }
 
 void ProfileSyncService::UnregisterInvalidationHandler(
     syncer::InvalidationHandler* handler) {
   invalidator_registrar_.UnregisterHandler(handler);
 }
 
+void ProfileSyncService::AcknowledgeInvalidation(
+    const invalidation::ObjectId& id,
+    const syncer::AckHandle& ack_handle) {
+  // TODO(dcheng): This DCHECK is probably wrong.
+  DCHECK(backend_.get());
+  backend_->AcknowledgeInvalidation(id, ack_handle);
+}
+
 syncer::InvalidatorState ProfileSyncService::GetInvalidatorState() const {
   return invalidator_registrar_.GetInvalidatorState();
 }
 
 void ProfileSyncService::Shutdown() {
   ShutdownImpl(false);
 }
 
 void ProfileSyncService::ShutdownImpl(bool sync_disabled) {
   // First, we spin down the backend and wait for it to stop syncing completely
@@ skipping 1333 matching lines @@
   // See http://stackoverflow.com/questions/6224121/is-new-this-myclass-undefined-behaviour-after-directly-calling-the-destru.
   ProfileSyncService* old_this = this;
   this->~ProfileSyncService();
   new(old_this) ProfileSyncService(
       new ProfileSyncComponentsFactoryImpl(profile,
                                            CommandLine::ForCurrentProcess()),
       profile,
       signin,
       behavior);
 }