Add use-counters for use of CSS parsing in WebkitCSSMatrix.

third_party/WebKit/Source/core/css/WebKitCSSMatrix.idl

 /*
  * Copyright (C) 2008, 2010 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 38 matching lines @@
     attribute unrestricted double m24;
     attribute unrestricted double m31;
     attribute unrestricted double m32;
     attribute unrestricted double m33;
     attribute unrestricted double m34;
     attribute unrestricted double m41;
     attribute unrestricted double m42;
     attribute unrestricted double m43;
     attribute unrestricted double m44;
 
-    [RaisesException] void setMatrixValue([Default=Undefined] optional DOMString string);
+    [RaisesException, MeasureAs=WebkitCSSMatrixSetMatrixValue] void setMatrixValue([Default=Undefined] optional DOMString string);
 
     // Multiply this matrix by secondMatrix, on the right (result = this * secondMatrix)
     [LegacyInterfaceTypeChecking] WebKitCSSMatrix multiply([Default=Undefined] optional WebKitCSSMatrix secondMatrix);
 
     // Return the inverse of this matrix. Throw an exception if the matrix is not invertible
     [RaisesException] WebKitCSSMatrix inverse();
 
     // Return this matrix translated by the passed values.
     // Passing a NaN will use a value of 0. This allows the 3D form to used for 2D operations
     WebKitCSSMatrix translate([Default=Undefined] optional unrestricted double x,
@@ skipping 25 matching lines @@
     // Returns this matrix skewed along the X axis by the passed values.
     // Passing a NaN will use a value of 0.
     WebKitCSSMatrix skewX([Default=Undefined] optional unrestricted double angle);
 
     // Returns this matrix skewed along the Y axis by the passed values.
     // Passing a NaN will use a value of 0.
     WebKitCSSMatrix skewY([Default=Undefined] optional unrestricted double angle);
 
     [NotEnumerable] stringifier;
 };