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chromium/third_party/blink/web_tests/paint/invalidation/svg/relative-sized-deep-shadow-tree-content.xhtml 

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="../resources/text-based-repaint.js"></script>
</head>
<body onload="runRepaintAndPixelTest()">
    <p>The svg area contained in the div element (red box), should contain one blue rectangle from (50%,50%)-(100%,100%), especially after resizing the content box to a different size</p>
    <div id="contentBox" style="width: 100px; height: 400px; border: 1px solid red;">
        <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="100%" height="100%">
            <defs>
                <rect id="targetRect" y="25%" width="50%" height="50%" fill="blue"/>
                <use id="targetUse" x="25%" xlink:href="#targetRect"/>
            </defs>
            <use x="25%" y="25%" xlink:href="#targetUse"/>
        </svg>
    </div>
    <script>
        function repaintTest() {
            document.getElementById("contentBox").style.setProperty("width", "400px");
        }
    </script>
</body>
</html>