IDL: Use Nullable for union type return value

Source/core/html/HTMLFormElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef HTMLFormElement_h
 #define HTMLFormElement_h
 
+#include "bindings/core/v8/Nullable.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLFormControlElement.h"
 #include "core/html/forms/RadioButtonGroupScope.h"
 #include "core/loader/FormSubmission.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/WeakPtr.h"
 
 namespace WTF{
 class TextEncoding;
 }
@@ skipping 73 matching lines @@
     void finishRequestAutocomplete(AutocompleteResult);
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(autocomplete);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(autocompleteerror);
 
     RadioButtonGroupScope& radioButtonGroupScope() { return m_radioButtonGroupScope; }
 
     const FormAssociatedElement::List& associatedElements() const;
     const WillBeHeapVector<RawPtrWillBeMember<HTMLImageElement> >& imageElements();
 
-    void anonymousNamedGetter(const AtomicString& name, bool&, RefPtrWillBeRawPtr<RadioNodeList>&, bool&, RefPtrWillBeRawPtr<Element>&);
+    void anonymousNamedGetter(const AtomicString& name, Nullable<RefPtrWillBeRawPtr<RadioNodeList> >&, Nullable<RefPtrWillBeRawPtr<Element> >&);
 
 private:
     explicit HTMLFormElement(Document&);
 
     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual void finishParsingChildren() OVERRIDE;
 
     virtual void handleLocalEvents(Event*) OVERRIDE;
@@ skipping 53 matching lines @@
     bool m_isInResetFunction;
 
     bool m_wasDemoted;
 
     OwnPtrWillBeMember<GenericEventQueue> m_pendingAutocompleteEventsQueue;
 };
 
 } // namespace blink
 
 #endif // HTMLFormElement_h