Remove Element.nodeNamePreservingCase

Source/core/editing/MarkupAccumulator.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 375 matching lines @@
 
     // Give an opportunity to subclasses to add their own attributes.
     appendCustomAttributes(result, element, namespaces);
 
     appendCloseTag(result, element);
 }
 
 void MarkupAccumulator::appendOpenTag(StringBuilder& result, const Element& element, Namespaces* namespaces)
 {
     result.append('<');
-    result.append(element.nodeNamePreservingCase());

[eseidel, 2014/01/31 05:41:01]

I see, we can't use nodeName() because it doesn't preserve case?

I think that the previous code as clearer.  Its not at all clear when reading
this why we go through tagName to get this.

+    result.append(element.tagQName().toString());
     if (!element.document().isHTMLDocument() && namespaces && shouldAddNamespaceElement(element))
         appendNamespace(result, element.prefix(), element.namespaceURI(), *namespaces);
 }
 
 void MarkupAccumulator::appendCloseTag(StringBuilder& result, const Element& element)
 {
     if (shouldSelfClose(element)) {
         if (element.isHTMLElement())
             result.append(' '); // XHTML 1.0 <-> HTML compatibility.
         result.append('/');
@@ skipping 112 matching lines @@
     // which elements should be serialized w/o end tags.
     return toHTMLElement(node).ieForbidsInsertHTML();
 }
 
 void MarkupAccumulator::appendEndMarkup(StringBuilder& result, const Node& node)
 {
     if (!node.isElementNode() || shouldSelfClose(node) || (!node.hasChildNodes() && elementCannotHaveEndTag(node)))
         return;
 
     result.appendLiteral("</");
-    result.append(toElement(node).nodeNamePreservingCase());
+    result.append(toElement(node).tagQName().toString());
     result.append('>');
 }
 
 }