WebKit side of merge from r41149 to r41181.

WebCore/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 70 matching lines @@
     return static_cast<ElementRareData*>(Node::ensureRareData());
 }
     
 NodeRareData* Element::createRareData()
 {
     return new ElementRareData;
 }
     
 PassRefPtr<Node> Element::cloneNode(bool deep)
 {
-    ExceptionCode ec = 0;
-    RefPtr<Element> clone = document()->createElementNS(namespaceURI(), nodeName(), ec);
-    ASSERT(!ec);
-    
-    // clone attributes
+    RefPtr<Element> clone = document()->createElement(tagQName(), false);
+    // This will catch HTML elements in the wrong namespace that are not correctly copied.
+    // This is a sanity check as HTML overloads some of the DOM methods.
+    ASSERT(isHTMLElement() == clone->isHTMLElement());
+
+    // Clone attributes.
     if (namedAttrMap)
         clone->attributes()->setAttributes(*namedAttrMap);
 
     clone->copyNonAttributeProperties(this);
     
     if (deep)
         cloneChildNodes(clone.get());
 
     return clone.release();
 }
@@ skipping 1171 matching lines @@
     unsigned count = 0;
     Node* n = firstChild();
     while (n) {
         count += n->isElementNode();
         n = n->nextSibling();
     }
     return count;
 }
 
 }