Add a helper method to create SW SimpleEventCallbacks.

content/browser/push_messaging/push_messaging_router.cc

 // Copyright 2014 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 "content/browser/push_messaging/push_messaging_router.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 107 matching lines @@
     const DeliverMessageCallback& deliver_message_callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   int request_id = service_worker->StartRequestWithCustomTimeout(
       ServiceWorkerMetrics::EventType::PUSH,
       base::Bind(&PushMessagingRouter::DeliverMessageEnd,
                  deliver_message_callback, service_worker_registration),
       base::TimeDelta::FromSeconds(kPushMessageTimeoutSeconds),
       ServiceWorkerVersion::KILL_ON_TIMEOUT);
 
   service_worker->event_dispatcher()->DispatchPushEvent(
-      payload, base::Bind(&ServiceWorkerVersion::OnSimpleEventFinished,
-                          service_worker, request_id));
+      payload, service_worker->CreateSimpleEventCallback(request_id));
 }
 
 // static
 void PushMessagingRouter::DeliverMessageEnd(
     const DeliverMessageCallback& deliver_message_callback,
     const scoped_refptr<ServiceWorkerRegistration>& service_worker_registration,
     ServiceWorkerStatusCode service_worker_status) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   UMA_HISTOGRAM_ENUMERATION("PushMessaging.DeliveryStatus.ServiceWorkerEvent",
                             service_worker_status,
@@ skipping 31 matching lines @@
     case SERVICE_WORKER_ERROR_MAX_VALUE:
       NOTREACHED() << "Got unexpected error code: " << service_worker_status
                    << " " << ServiceWorkerStatusToString(service_worker_status);
       delivery_status = PUSH_DELIVERY_STATUS_SERVICE_WORKER_ERROR;
       break;
   }
   RunDeliverCallback(deliver_message_callback, delivery_status);
 }
 
 }  // namespace content