Update WebKit IDLs after chrome roll.

dom/Attr.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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
-[
-    JSCustomMarkFunction,
-    JSGenerateToNativeObject
-] interface Attr : Node {
+interface Attr : Node {
 
     // DOM Level 1
 
     [TreatReturnedNullStringAs=Null] readonly attribute DOMString name;
 
     readonly attribute boolean specified;
 
              [TreatReturnedNullStringAs=Null, TreatNullAs=NullString] attribute DOMString value 
                  setter raises(DOMException);
 
     // DOM Level 2
 
     readonly attribute Element ownerElement;
 
     // DOM Level 3
 
     readonly attribute boolean isId;
 
 #if defined(LANGUAGE_OBJECTIVE_C) && LANGUAGE_OBJECTIVE_C
     // This extension is no longer needed, but it has to remain available in Objective C, as it's public API.
     readonly attribute CSSStyleDeclaration style;
 #endif
 };