Regularize extended attributes on partial interfaces

Source/core/xml/DocumentXPathEvaluator.idl

 /*
  * Copyright (C) 2013 Google 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.
  *
  * 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.
  */
+
 partial interface Document {
     // DOM Level 3 XPath (XPathEvaluator interface)
     [RaisesException] XPathExpression createExpression([Default=Undefined] optional DOMString expression,
                                                        [Default=Undefined] optional XPathNSResolver resolver);
     XPathNSResolver    createNSResolver(Node nodeResolver);
     [Custom, RaisesException] XPathResult evaluate([Default=Undefined] optional DOMString expression,
                                                    [Default=Undefined] optional Node contextNode,
                                                    [Default=Undefined] optional XPathNSResolver resolver,
                                                    [Default=Undefined] optional unsigned short type,
                                                    [Default=Undefined] optional XPathResult inResult);
 };