Add use counters for a number of extensions and non-standard APIs

Source/core/svg/SVGFEMorphologyElement.idl

 /*
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  *
  * 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 20 matching lines @@
     // Morphology Operators
     const unsigned short SVG_MORPHOLOGY_OPERATOR_UNKNOWN = 0;
     const unsigned short SVG_MORPHOLOGY_OPERATOR_ERODE = 1;
     const unsigned short SVG_MORPHOLOGY_OPERATOR_DILATE = 2;
 
     readonly attribute SVGAnimatedString in1;
     [ImplementedAs=svgOperator] readonly attribute SVGAnimatedEnumeration operator;
     readonly attribute SVGAnimatedNumber radiusX;
     readonly attribute SVGAnimatedNumber radiusY;
 
-    void setRadius([Default=Undefined] optional float radiusX,
-                   [Default=Undefined] optional float radiusY); // non-standard
+    [MeasureAs=SVGFEMorphologyElementSetRadius] void setRadius([Default=Undefined] optional float radiusX,
+                                                               [Default=Undefined] optional float radiusY); // non-standard
 };
 
 SVGFEMorphologyElement implements SVGFilterPrimitiveStandardAttributes;