Update the PushEvent to have a nullable PushMessageData

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 "content/browser/service_worker/service_worker_context_wrapper.h"
@@ skipping 16 matching lines @@
       base::Bind(deliver_message_callback, delivery_status));
 }
 
 }  // namespace
 
 // static
 void PushMessagingRouter::DeliverMessage(
     BrowserContext* browser_context,
     const GURL& origin,
     int64_t service_worker_registration_id,
-    const std::string& data,
+    const content::PushEventPayload& payload,
     const DeliverMessageCallback& deliver_message_callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   StoragePartition* partition =
       BrowserContext::GetStoragePartitionForSite(browser_context, origin);
   scoped_refptr<ServiceWorkerContextWrapper> service_worker_context =
       static_cast<ServiceWorkerContextWrapper*>(
           partition->GetServiceWorkerContext());
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&PushMessagingRouter::FindServiceWorkerRegistration, origin,
-                 service_worker_registration_id, data, deliver_message_callback,
-                 service_worker_context));
+                 service_worker_registration_id, payload,
+                 deliver_message_callback, service_worker_context));
 }
 
 // static
 void PushMessagingRouter::FindServiceWorkerRegistration(
     const GURL& origin,
     int64_t service_worker_registration_id,
-    const std::string& data,
+    const content::PushEventPayload& payload,
     const DeliverMessageCallback& deliver_message_callback,
     scoped_refptr<ServiceWorkerContextWrapper> service_worker_context) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   // Try to acquire the registration from storage. If it's already live we'll
   // receive it right away. If not, it will be revived from storage.
   service_worker_context->FindReadyRegistrationForId(
       service_worker_registration_id, origin,
       base::Bind(&PushMessagingRouter::FindServiceWorkerRegistrationCallback,
-                 data, deliver_message_callback));
+                 payload, deliver_message_callback));
 }
 
 // static
 void PushMessagingRouter::FindServiceWorkerRegistrationCallback(
-    const std::string& data,
+    const content::PushEventPayload& payload,
     const DeliverMessageCallback& deliver_message_callback,
     ServiceWorkerStatusCode service_worker_status,
     const scoped_refptr<ServiceWorkerRegistration>&
         service_worker_registration) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   // TODO(mvanouwerkerk): UMA logging.
   if (service_worker_status != SERVICE_WORKER_OK) {
     RunDeliverCallback(deliver_message_callback,
                        PUSH_DELIVERY_STATUS_NO_SERVICE_WORKER);
     return;
   }
 
   ServiceWorkerVersion* version = service_worker_registration->active_version();
   DCHECK(version);
 
   // Hold on to the service worker registration in the callback to keep it
   // alive until the callback dies. Otherwise the registration could be
   // released when this method returns - before the event is delivered to the
   // service worker.
   base::Callback<void(ServiceWorkerStatusCode)> dispatch_event_callback =
       base::Bind(&PushMessagingRouter::DeliverMessageEnd,
                  deliver_message_callback, service_worker_registration);
 
-  version->DispatchPushEvent(dispatch_event_callback, data);
+  version->DispatchPushEvent(dispatch_event_callback, payload);
 }
 
 // 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);
   // TODO(mvanouwerkerk): UMA logging.
   PushDeliveryStatus delivery_status =
@@ skipping 27 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