Use toElement instead of static_cast<Element*> and static_cast<const Element*>

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1487 matching lines @@
 String Node::lookupPrefix(const AtomicString &namespaceURI) const
 {
     // Implemented according to
     // http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/namespaces-algorithms.html#lookupNamespacePrefixAlgo
     
     if (namespaceURI.isEmpty())
         return String();
     
     switch (nodeType()) {
         case ELEMENT_NODE:
-            return lookupNamespacePrefix(namespaceURI, static_cast<const Element *>(this));
+            return lookupNamespacePrefix(namespaceURI, toElement(this));
         case DOCUMENT_NODE:
             if (Element* de = toDocument(this)->documentElement())
                 return de->lookupPrefix(namespaceURI);
             return String();
         case ENTITY_NODE:
         case NOTATION_NODE:
         case DOCUMENT_FRAGMENT_NODE:
         case DOCUMENT_TYPE_NODE:
             return String();
         case ATTRIBUTE_NODE: {
@@ skipping 12 matching lines @@
 String Node::lookupNamespaceURI(const String &prefix) const
 {
     // Implemented according to
     // http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/namespaces-algorithms.html#lookupNamespaceURIAlgo
     
     if (!prefix.isNull() && prefix.isEmpty())
         return String();
     
     switch (nodeType()) {
         case ELEMENT_NODE: {
-            const Element *elem = static_cast<const Element *>(this);
+            const Element *elem = toElement(this);
             
             if (!elem->namespaceURI().isNull() && elem->prefix() == prefix)
                 return elem->namespaceURI();
             
             if (elem->hasAttributes()) {
                 for (unsigned i = 0; i < elem->attributeCount(); i++) {
                     const Attribute* attr = elem->attributeItem(i);
                     
                     if (attr->prefix() == xmlnsAtom && attr->localName() == prefix) {
                         if (!attr->value().isEmpty())
@@ skipping 1182 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const WebCore::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif