Use stricter typing for HTMLCollection named getter

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.
@@ skipping 33 matching lines @@
 class HTMLFormControlElement;
 class HTMLImageElement;
 class HTMLInputElement;
 
 class HTMLFormElement FINAL : public HTMLElement {
 public:
     static PassRefPtr<HTMLFormElement> create(Document&);
     virtual ~HTMLFormElement();
 
     PassRefPtr<HTMLCollection> elements();
-    void getNamedElements(const AtomicString&, Vector<RefPtr<Node> >&);
+    void getNamedElements(const AtomicString&, Vector<RefPtr<Element> >&);
 
     unsigned length() const;
     Node* item(unsigned index);
 
     String enctype() const { return m_attributes.encodingType(); }
     void setEnctype(const AtomicString&);
 
     String encoding() const { return m_attributes.encodingType(); }
     void setEncoding(const AtomicString& value) { setEnctype(value); }
 
@@ skipping 43 matching lines @@
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(autocomplete);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(autocompleteerror);
 
     CheckedRadioButtons& checkedRadioButtons() { return m_checkedRadioButtons; }
 
     const Vector<FormAssociatedElement*>& associatedElements() const;
     const Vector<HTMLImageElement*>& imageElements();
 
     void getTextFieldValues(StringPairVector& fieldNamesAndValues) const;
-    void anonymousNamedGetter(const AtomicString& name, bool&, RefPtr<RadioNodeList>&, bool&, RefPtr<Node>&);
+    void anonymousNamedGetter(const AtomicString& name, bool&, RefPtr<RadioNodeList>&, bool&, RefPtr<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 14 matching lines @@
     void collectImageElements(Node* root, Vector<HTMLImageElement*>&);
 
     // Returns true if the submission should proceed.
     bool validateInteractively(Event*);
 
     // Validates each of the controls, and stores controls of which 'invalid'
     // event was not canceled to the specified vector. Returns true if there
     // are any invalid controls in this form.
     bool checkInvalidControlsAndCollectUnhandled(Vector<RefPtr<FormAssociatedElement> >*, HTMLFormControlElement::CheckValidityDispatchEvents = HTMLFormControlElement::CheckValidityDispatchEventsAllowed);
 
-    Node* elementFromPastNamesMap(const AtomicString&);
-    void addToPastNamesMap(Node*, const AtomicString& pastName);
+    Element* elementFromPastNamesMap(const AtomicString&);
+    void addToPastNamesMap(Element*, const AtomicString& pastName);
     void removeFromPastNamesMap(HTMLElement&);
 
-    typedef HashMap<AtomicString, Node*> PastNamesMap;
+    typedef HashMap<AtomicString, Element*> PastNamesMap;
 
     FormSubmission::Attributes m_attributes;
     OwnPtr<PastNamesMap> m_pastNamesMap;
 
     CheckedRadioButtons m_checkedRadioButtons;
 
     // Do not access m_associatedElements directly. Use associatedElements() instead.
     Vector<FormAssociatedElement*> m_associatedElements;
     // Do not access m_imageElements directly. Use imageElements() instead.
     Vector<HTMLImageElement*> m_imageElements;
@@ skipping 15 matching lines @@
 
     Vector<RefPtr<Event> > m_pendingAutocompleteEvents;
     Timer<HTMLFormElement> m_requestAutocompleteTimer;
 };
 
 DEFINE_NODE_TYPE_CASTS(HTMLFormElement, hasTagName(HTMLNames::formTag));
 
 } // namespace WebCore
 
 #endif // HTMLFormElement_h