Oilpan: fix build after r172658.

Source/modules/serviceworkers/ServiceWorkerError.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #include "config.h"
 #include "ServiceWorkerError.h"
 
 #include "core/dom/ExceptionCode.h"
 
 using blink::WebServiceWorkerError;
 namespace WebCore {
 
 // static
-PassRefPtrWillBeRawPtr<DOMException> ServiceWorkerError::from(ScriptPromiseResolverWithContext*, WebType* webErrorRaw)
+PassRefPtr<DOMException> ServiceWorkerError::from(ScriptPromiseResolverWithContext*, WebType* webErrorRaw)
 {
     OwnPtr<WebType> webError = adoptPtr(webErrorRaw);
     switch (webError->errorType) {
     case WebServiceWorkerError::DisabledError:
         return DOMException::create(NotSupportedError, "Service Worker support is disabled.");
     case WebServiceWorkerError::SecurityError:
         return DOMException::create(SecurityError, "The Service Worker security policy prevented an action.");
     case WebServiceWorkerError::InstallError:
         // FIXME: Introduce new InstallError type to ExceptionCodes?
         return DOMException::create(AbortError, "The Service Worker installation failed.");
     case WebServiceWorkerError::ActivateError:
         // Not currently returned as a promise rejection.
         // FIXME: Introduce new ActivateError type to ExceptionCodes?
         return DOMException::create(AbortError, "The Service Worker activation failed.");
     case WebServiceWorkerError::NotFoundError:
         return DOMException::create(NotFoundError, "The specified Service Worker resource was not found.");
     case WebServiceWorkerError::UnknownError:
         return DOMException::create(UnknownError, "An unknown error occurred within Service Worker.");
     }
     ASSERT_NOT_REACHED();
     return DOMException::create(UnknownError);
 }
 
 } // namespace WebCore