Add support for named arguments to our bindings generation.

sky/engine/core/dom/Node.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 20 matching lines @@
     // TODO(esprehn): This should return TreeScope in Sky, but we don't have
     // a TreeScope type yet.
     readonly attribute Node ownerScope;
 
     [CustomElementCallbacks, RaisesException, TypeChecking=Interface] Node insertBefore(Node newChild, Node? refChild);
     [CustomElementCallbacks, RaisesException, TypeChecking=Interface] Node replaceChild(Node newChild, Node oldChild);
     [CustomElementCallbacks, RaisesException, TypeChecking=Interface] Node removeChild(Node oldChild);
     [CustomElementCallbacks, RaisesException, TypeChecking=Interface] Node appendChild(Node newChild);
 
     [ImplementedAs=hasChildren] boolean hasChildNodes();
-    [CustomElementCallbacks] Node cloneNode(optional boolean deep);
+    [CustomElementCallbacks] Node cloneNode([Named] optional boolean deep = true);
 
     [TreatReturnedNullStringAs=Null, TreatNullAs=NullString, TreatUndefinedAs=NullString, CustomElementCallbacks] attribute DOMString textContent;
 
     boolean contains(Node other);
 
     // DocumentPosition
     const unsigned short      DOCUMENT_POSITION_DISCONNECTED = 0x01;
     const unsigned short      DOCUMENT_POSITION_PRECEDING    = 0x02;
     const unsigned short      DOCUMENT_POSITION_FOLLOWING    = 0x04;
     const unsigned short      DOCUMENT_POSITION_CONTAINS     = 0x08;
     const unsigned short      DOCUMENT_POSITION_CONTAINED_BY = 0x10;
     const unsigned short      DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
 
     unsigned short compareDocumentPosition(Node other);
 
     readonly attribute Element parentElement;
 };