Implement MarkRequestCompleted.

components/offline_pages/background/request_coordinator.h

 // Copyright 2016 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 COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_
 #define COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_
 
 #include <memory>
 #include <set>
 
@@ skipping 212 matching lines @@
   void AddRequestResultCallback(RequestQueue::AddRequestResult result,
                                 const SavePageRequest& request);
 
   // Receives the result of update and delete requests to the request queue.
   void UpdateRequestCallback(const ClientId& client_id,
                              RequestQueue::UpdateRequestResult result);
 
   void UpdateMultipleRequestsCallback(
       std::unique_ptr<UpdateRequestsResult> result);
 
+  void CompletedRequestCallback(const MultipleItemStatuses& status);
+
   void HandleRemovedRequestsAndCallback(
       const RemoveRequestsCallback& callback,
       BackgroundSavePageResult status,
       std::unique_ptr<UpdateRequestsResult> result);
 
   void HandleRemovedRequests(BackgroundSavePageResult status,
                              std::unique_ptr<UpdateRequestsResult> result);
 
   // Start processing now if connected (but with conservative assumption
   // as to other device conditions).
@@ skipping 118 matching lines @@
   base::TimeDelta offliner_timeout_;
   // Allows us to pass a weak pointer to callbacks.
   base::WeakPtrFactory<RequestCoordinator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestCoordinator);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_