Use DEFINE_NODE_TYPE_CASTS instead of using manual toHTMLFooElement()

Source/core/html/HTMLOptionElement.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, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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
@@ skipping 76 matching lines @@
 
     void didRecalcStyle(StyleRecalcChange) OVERRIDE;
 
     String collectOptionInnerText() const;
 
     bool m_disabled;
     bool m_isSelected;
     RefPtr<RenderStyle> m_style;
 };
 
-void toHTMLOptionElement(const HTMLOptionElement*); // This overload will catch anyone doing an unnecessary cast.
-
-inline HTMLOptionElement* toHTMLOptionElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::optionTag));
-    return static_cast<HTMLOptionElement*>(node);
-}
-
-inline const HTMLOptionElement* toHTMLOptionElement(const Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::optionTag));
-    return static_cast<const HTMLOptionElement*>(node);
-}
+DEFINE_NODE_TYPE_CASTS(HTMLOptionElement, hasTagName(HTMLNames::optionTag));
 
 } // namespace WebCore
 
 #endif