Remove trailing commas from Blink IDLs

Source/core/svg/SVGException.idl

 /*
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple 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.
  */
 
 [
     Conditional=SVG,
-    DoNotCheckConstants,
+    DoNotCheckConstants
 ] exception SVGException {
 
     readonly attribute unsigned short   code;
     readonly attribute DOMString        name;
     readonly attribute DOMString        message;
 
     // Override in a Mozilla compatible format
     [NotEnumerable] DOMString toString();
 
     // SVGExceptionCode
     const unsigned short SVG_WRONG_TYPE_ERR = 0;
     const unsigned short SVG_INVALID_VALUE_ERR = 1;
     const unsigned short SVG_MATRIX_NOT_INVERTABLE = 2;
 };