<!DOCTYPE html>

<html>
<head>
    <style>
        body {
            height: 4000px;
        }
        
        ol {
            height: 80%;
        }
        li {
            margin: 200px 100px;
            height: 200px;
            width: 300px;
            border: 10px solid blue;
            background-color: gray;
            box-shadow: 0 0 10px black;
            font-size: 24pt;
            box-sizing: border-box;
            -webkit-transform: translateZ(0);
        }
    </style>
    <script>
        if (window.testRunner) {
            testRunner.dumpAsText();
            testRunner.waitUntilDone();
        }

        function doTest()
        {
            window.setTimeout(function() {
                window.scrollTo(0, 980);
                if (window.internals)
                    document.getElementById('layers').innerText = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_VISIBLE_RECTS)

                if (window.testRunner)
                    testRunner.notifyDone();
            }, 0);
        }

        window.addEventListener('load', doTest, false);
    </script>
</head>
<body>

<ol>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
</ol>
<pre id="layers">Layer tree goes here when testing</pre>

</body>
</html>