chromium/third_party/blink/web_tests/svg/custom/gradient-attr-update.svg

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd">
<svg version="1.1" baseProfile="basic" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="svg-root" width="100%" height="100%" onload="pageLoaded()">
     <script>
if (window.testRunner)
    testRunner.waitUntilDone();

function myfunc() {
        var myRect = document.getElementById("rect");
        myRect.setAttributeNS(null, 'fill', "url(#gradient1)");
        var myStop = document.getElementById("OF");
        myStop.setAttributeNS(null, 'stop-color', 'green');
        if (window.testRunner)
            testRunner.notifyDone();
}

function clickNow() {
    if (window.eventSender) {
        eventSender.mouseMoveTo(20, 10);
        eventSender.mouseDown();
        eventSender.mouseUp();
    }
}

function pageLoaded() {
    if (window.eventSender)
        clickNow();
    else
        myfunc();
}
     </script>
     <defs>
         <radialGradient id="gradient1" cx="45%" cy="48%" r="200" fx="50%" fy="52%" spreadMethod="reflect" gradientUnits="userSpaceOnUse">
             <stop  offset="0.0" stop-color="green"/>
             <stop  id="OF" offset="1" stop-color="red"/>
         </radialGradient>
     </defs>
 <rect id="rect" x="0" y="0" width="100" height="100" fill="red" onclick="myfunc()"/>
</svg>