Sync SVG interfaces with the specs

Source/core/svg/SVGPatternElement.idl

 /*
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
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  * 2. Redistributions in binary form must reproduce the above copyright
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  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
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-// http://www.w3.org/TR/SVG11/pservers.html#InterfaceSVGPatternElement
 // http://www.w3.org/TR/SVG2/pservers.html#InterfaceSVGPatternElement
 
 interface SVGPatternElement : SVGElement {
     readonly attribute SVGAnimatedEnumeration patternUnits;
     readonly attribute SVGAnimatedEnumeration patternContentUnits;
     readonly attribute SVGAnimatedTransformList patternTransform;
     readonly attribute SVGAnimatedLength x;
     readonly attribute SVGAnimatedLength y;
     readonly attribute SVGAnimatedLength width;
     readonly attribute SVGAnimatedLength height;
 };
 
 SVGPatternElement implements SVGFitToViewBox;
-SVGPatternElement implements SVGTests; // in SVG 1.1 but not SVG 2
 SVGPatternElement implements SVGURIReference;
+// SVGPatternElement implements SVGUnitTypes;
+
+// TODO(philipj): The following was part of SVG 1.1:
+// http://www.w3.org/TR/SVG11/pservers.html#InterfaceSVGPatternElement
+SVGPatternElement implements SVGTests;