LayoutTests/compositing/fixed-image-loading.html

<!DOCTYPE html>

<html>
<head>
    <script>
        if (window.testRunner) {
            testRunner.dumpAsText();
            testRunner.waitUntilDone();
        }

        function imageLoaded()
        {
            if (window.internals)
                document.getElementById('layers').innerText = window.internals.layerTreeAsText(document);
            if (window.testRunner)
                testRunner.notifyDone();
        }
    </script>
</head>
<body>
<img id="image" src="resources/apple.jpg" onload="imageLoaded()" style="position: fixed;"></img>
<pre id="layers"></pre>
<script>
document.body.offsetWidth; // Force layout before the image loads.
</script>
</body>
</html>