[BackgroundSync] Use appopriate type parameters for WebCallbacks (2/4)

Source/modules/background_sync/SyncRegistration.cpp

 // 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 "config.h"
 #include "modules/background_sync/SyncRegistration.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/background_sync/SyncCallbacks.h"
 #include "modules/background_sync/SyncError.h"
 #include "modules/background_sync/SyncRegistrationOptions.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 #include "public/platform/Platform.h"
 #include "public/platform/modules/background_sync/WebSyncProvider.h"
 #include "public/platform/modules/background_sync/WebSyncRegistration.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 SyncRegistration* SyncRegistration::create(const WebSyncRegistration& syncRegistration, ServiceWorkerRegistration* serviceWorkerRegistration)
 {
     SyncRegistrationOptions options = SyncRegistrationOptions();
     options.setTag(syncRegistration.tag);
     return new SyncRegistration(syncRegistration.id, options, serviceWorkerRegistration);
 }
 
-SyncRegistration* SyncRegistration::take(ScriptPromiseResolver*, WebSyncRegistration* syncRegistration, ServiceWorkerRegistration* serviceWorkerRegistration)
+SyncRegistration* SyncRegistration::take(ScriptPromiseResolver*, PassOwnPtr<WebSyncRegistration> registration, ServiceWorkerRegistration* serviceWorkerRegistration)
 {
-    OwnPtr<WebSyncRegistration> registration = adoptPtr(syncRegistration);
-    return create(*syncRegistration, serviceWorkerRegistration);
-}
-
-void SyncRegistration::dispose(WebSyncRegistration* syncRegistration)
-{
-    if (syncRegistration)
-        delete syncRegistration;
+    return create(*registration, serviceWorkerRegistration);
 }
 
 SyncRegistration::SyncRegistration(int64_t id, const SyncRegistrationOptions& options, ServiceWorkerRegistration* serviceWorkerRegistration)
     : m_id(id)
     , m_tag(options.tag())
     , m_serviceWorkerRegistration(serviceWorkerRegistration)
 {
 }
 
 SyncRegistration::~SyncRegistration()
@@ skipping 38 matching lines @@
 
     return promise;
 }
 
 DEFINE_TRACE(SyncRegistration)
 {
     visitor->trace(m_serviceWorkerRegistration);
 }
 
 } // namespace blink