Oilpan: Build fix after r170454

Source/modules/push_messaging/PushManager.cpp

 // 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 "config.h"
 #include "modules/push_messaging/PushManager.h"
 
 #include "bindings/v8/ScriptPromise.h"
 #include "bindings/v8/ScriptPromiseResolver.h"
 #include "bindings/v8/ScriptValue.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 
 namespace WebCore {
 
 PushManager::PushManager()
 {
     ScriptWrappable::init(this);
 }
 
 PushManager::~PushManager()
 {
 }
 
 ScriptPromise PushManager::registerPushMessaging(ExecutionContext* context, const String& senderId)
 {
-    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(context);
+    RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(context);
     ScriptPromise promise = resolver->promise();
     // FIXME: Implement registration.
     resolver->reject(ScriptValue::createNull());
     return promise;
 }
 
 } // namespace WebCore