<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <meta name="viewport" content="width=device-width">
    <title></title>
    <style>
        .scroller {
            margin: 10px;
            overflow: scroll;
            width: 200px;
            height: 200px;
            border: 1px solid black;
            opacity: 0.8;
        }
        
        .absolute {
            position: absolute;
            top: 100px;
            width: 300px;
            height: 20px;
            background-color: green;
            padding: 10px;
        }
        
        .spacer {
            height: 800px;
        }
        
    </style>
    <script>
        if (window.testRunner)
            testRunner.dumpAsText();

        window.addEventListener("load", () => {
            if (window.internals)
                document.getElementById("layers").innerText = window.internals.layerTreeAsText(document);
        }, false);
    </script>
<body>
    <div class='scroller'>
        <div class="spacer">
        <div class='absolute'>This layer should be composited.</div>
    </div>
<pre id="layers">Layer tree goes here</pre>
</body>
</html>