Remove [PerWorldBindings] from not performance-sensitive methods

Source/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 33 matching lines @@
     [PerWorldBindings] readonly attribute Node             parentNode;
     [PerWorldBindings] readonly attribute NodeList         childNodes;
     [PerWorldBindings] readonly attribute Node             firstChild;
     [PerWorldBindings] readonly attribute Node             lastChild;
     [PerWorldBindings] readonly attribute Node             previousSibling;
     [PerWorldBindings] readonly attribute Node             nextSibling;
     [PerWorldBindings] readonly attribute Document         ownerDocument;
 
     [Custom, CustomElementCallbacks, PerWorldBindings, LogActivity, RaisesException] Node insertBefore(Node newChild, Node refChild);
     [Custom, CustomElementCallbacks, PerWorldBindings, LogActivity, RaisesException] Node replaceChild(Node newChild, Node oldChild);
-    [Custom, CustomElementCallbacks, PerWorldBindings, RaisesException] Node removeChild(Node oldChild);
+    [Custom, CustomElementCallbacks, RaisesException] Node removeChild(Node oldChild);
     [Custom, CustomElementCallbacks, PerWorldBindings, LogActivity, RaisesException] Node appendChild(Node newChild);
 
     [ImplementedAs=hasChildren] boolean hasChildNodes();
-    [CustomElementCallbacks, PerWorldBindings]
-    Node               cloneNode(optional boolean deep);
+    [CustomElementCallbacks] Node cloneNode(optional boolean deep);
     [CustomElementCallbacks] void normalize();
 
     // Introduced in DOM Level 2:
     [TreatReturnedNullStringAs=Null, MeasureAs=NodeNamespaceURI] readonly attribute DOMString namespaceURI; // Moved to Element and Attr in DOM4.
     [TreatReturnedNullStringAs=Null, MeasureAs=NodeLocalName] readonly attribute DOMString localName; // Moved to Element and Attr in DOM4.
 
     // Introduced in DOM Level 3:
     [TreatReturnedNullStringAs=Null] readonly attribute DOMString baseURI;
 
     [TreatReturnedNullStringAs=Null, TreatNullAs=NullString, TreatUndefinedAs=NullString, CustomElementCallbacks] attribute DOMString textContent;
@@ skipping 13 matching lines @@
     const unsigned short      DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
 
     unsigned short compareDocumentPosition(Node other);
 
     // Introduced in DOM4
     boolean contains(Node other);
 
     // IE extensions
     [PerWorldBindings] readonly attribute Element parentElement;
 };