<!DOCTYPE html>

<html>
<head>
    <script src="resources/wheel-handler-region-helper.js"></script>
    <script>
        function doTest()
        {
            document.addEventListener('mousewheel', function() { });
            dumpRegion();
        }

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

<pre id="output"></pre>

</body>
</html>