Revert the merge. Mac build is mysteriously broken.

third_party/WebKit/WebCore/dom/Attr.idl

 /*
  * Copyright (C) 2006, 2007, 2008 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.
  */
 
 module core {
 
     interface [
         GenerateConstructor,
         GenerateNativeConverter,
         InterfaceUUID=EEE8E22B-22C3-4e50-95F4-5E0B8AAD8231,
         ImplementationUUID=41B16348-D8E7-4d21-BFDB-125705B7E91F
-    ] Attr : Node {
+    ] Attr : EventTargetNode {
 
         // DOM Level 1
 
         readonly attribute [ConvertNullStringTo=Null] DOMString name;
         readonly attribute boolean specified;
                  attribute [ConvertNullStringTo=Null, ConvertNullToNullString, CustomSetter] DOMString value 
                      setter raises(DOMException);
 
         // DOM Level 2
 
         readonly attribute Element ownerElement;
         
         // extensions
 #if !defined(LANGUAGE_COM)
         readonly attribute CSSStyleDeclaration style;
 #endif
     };
 
 }