Unprefix usage of -webkit-transform in tests

LayoutTests/svg/dynamic-updates/script-tests/SVGClipPathElement-css-transform-influences-hitTesting.js

 // [Name] SVGClipPathElement-transform-influences-hitTesting.js
 // [Expected rendering result] green circle - and a series of PASS messages
 
 description("Tests hitTesting on clipped Elements. Clip-path gets CSS transformed.")
 createSVGTestCase();
 
 var defsElement = createSVGElement("defs");
 rootSVGElement.appendChild(defsElement);
 
 var clipPathElement = createSVGElement("clipPath");
 clipPathElement.setAttribute("id", "clipper");
 
 var clipRectElement = createSVGElement("rect");
 clipRectElement.setAttribute("width", "5");
 clipRectElement.setAttribute("height", "5");
-clipRectElement.setAttribute("style", "-webkit-transform: scale(20)");
+clipRectElement.setAttribute("style", "transform: scale(20)");
 clipPathElement.appendChild(clipRectElement);
 
 defsElement.appendChild(clipPathElement);
 
 var foregroundRect = createSVGElement("rect");
 foregroundRect.setAttribute("width", "100");
 foregroundRect.setAttribute("height", "100");
 foregroundRect.setAttribute("fill", "green");
 foregroundRect.setAttribute("clip-path", "url(#clipper)");
 foregroundRect.setAttribute("onclick", "testPassed('Hit thrown on not clipped area of rect.');");
 rootSVGElement.appendChild(foregroundRect);
 
 // The clipPath gets scaled by 20. This should influence the hit testing,
 // since the area of the clipped content is affected as well. 
 function repaintTest() {
     clickAt(75, 50);
 }
 
 var successfullyParsed = true;