Get rid of special casing for 'operator' from the bindings generator

Source/core/svg/SVGFECompositeElement.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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 19 matching lines @@
     const unsigned short SVG_FECOMPOSITE_OPERATOR_UNKNOWN    = 0;
     const unsigned short SVG_FECOMPOSITE_OPERATOR_OVER       = 1;
     const unsigned short SVG_FECOMPOSITE_OPERATOR_IN         = 2;
     const unsigned short SVG_FECOMPOSITE_OPERATOR_OUT        = 3;
     const unsigned short SVG_FECOMPOSITE_OPERATOR_ATOP       = 4;
     const unsigned short SVG_FECOMPOSITE_OPERATOR_XOR        = 5;
     const unsigned short SVG_FECOMPOSITE_OPERATOR_ARITHMETIC = 6;
 
     readonly attribute SVGAnimatedString      in1;
     readonly attribute SVGAnimatedString      in2;
-    readonly attribute SVGAnimatedEnumeration operator;
+    [ImplementedAs=svgOperator] readonly attribute SVGAnimatedEnumeration operator;
     readonly attribute SVGAnimatedNumber      k1;
     readonly attribute SVGAnimatedNumber      k2;
     readonly attribute SVGAnimatedNumber      k3;
     readonly attribute SVGAnimatedNumber      k4;
 };
 
 SVGFECompositeElement implements SVGFilterPrimitiveStandardAttributes;