WebKit side of merge from r41149 to r41181.

WebCore/dom/Element.cpp

Index: WebCore/dom/Element.cpp
===================================================================
--- WebCore/dom/Element.cpp	(revision 10232)
+++ WebCore/dom/Element.cpp	(working copy)
@@ -88,11 +88,12 @@
     
 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);