Make AttachBehavior a required argument.

Source/core/dom/ContainerNode.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 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 718 matching lines @@
     document()->incDOMTreeVersion();
     if (!changedByParser && childCountDelta)
         document()->updateRangesAfterChildrenChanged(this);
     invalidateNodeListCachesInAncestors();
 }
 
 void ContainerNode::cloneChildNodes(ContainerNode *clone)
 {
     TrackExceptionState es;
     for (Node* n = firstChild(); n && !es.hadException(); n = n->nextSibling())
-        clone->appendChild(n->cloneNode(true), es);
+        clone->appendChild(n->cloneNode(true), es, DeprecatedAttachNow);
 }
 
 
 bool ContainerNode::getUpperLeftCorner(FloatPoint& point) const
 {
     if (!renderer())
         return false;
     // What is this code really trying to do?
     RenderObject* o = renderer();
     RenderObject* p = o;
@@ skipping 302 matching lines @@
         return true;
 
     if (node->isElementNode() && toElement(node)->shadow())
         return true;
 
     return false;
 }
 #endif
 
 } // namespace WebCore