Remove Attr child nodes (making Attr a Node, not a ContainerNode)

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 500 matching lines @@
 {
     updateDistribution();
 
     // Go through the subtree beneath us, normalizing all nodes. This means that
     // any two adjacent text nodes are merged and any empty text nodes are removed.
 
     RefPtrWillBeRawPtr<Node> node = this;
     while (Node* firstChild = node->firstChild())
         node = firstChild;
     while (node) {
-        if (node->isElementNode())
-            toElement(node)->normalizeAttributes();
-
         if (node == this)
             break;
 
         if (node->nodeType() == TEXT_NODE)
             node = toText(node)->mergeNextSiblingNodesIfPossible();
         else
             node = NodeTraversal::nextPostOrder(*node);
     }
 }
 
@@ skipping 1971 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif