Change mojo enums to be scoped enums in the generated C++ bindings.

content/renderer/background_sync/background_sync_client_impl.cc

 // Copyright 2015 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/renderer/background_sync/background_sync_client_impl.h"
 
 #include <utility>
 
 #include "content/child/background_sync/background_sync_provider.h"
 #include "content/child/background_sync/background_sync_type_converters.h"
@@ skipping 57 matching lines @@
     int64_t callback_id,
     content::BackgroundSyncEventLastChance last_chance,
     BackgroundSyncError error,
     SyncRegistrationPtr registration) {
   SyncCallback callback;
   auto it = sync_callbacks_.find(callback_id);
   DCHECK(it != sync_callbacks_.end());
   callback = it->second;
   sync_callbacks_.erase(it);
 
-  if (error != BACKGROUND_SYNC_ERROR_NONE) {
-    callback.Run(SERVICE_WORKER_EVENT_STATUS_ABORTED);
+  if (error != BackgroundSyncError::NONE) {
+    callback.Run(ServiceWorkerEventStatus::ABORTED);
     return;
   }
 
   ServiceWorkerContextClient* client =
       ServiceWorkerContextClient::ThreadSpecificInstance();
   if (!client) {
-    callback.Run(SERVICE_WORKER_EVENT_STATUS_ABORTED);
+    callback.Run(ServiceWorkerEventStatus::ABORTED);
     return;
   }
 
   scoped_ptr<blink::WebSyncRegistration> web_registration =
       mojo::ConvertTo<scoped_ptr<blink::WebSyncRegistration>>(registration);
 
   blink::WebServiceWorkerContextProxy::LastChanceOption web_last_chance =
       mojo::ConvertTo<blink::WebServiceWorkerContextProxy::LastChanceOption>(
           last_chance);
 
   client->DispatchSyncEvent(*web_registration, web_last_chance, callback);
 }
 
 }  // namespace content