third_party/web_platform_tests/webmessaging/support/ChildWindowPostMessage.htm

<!DOCTYPE html>
<html>
<head>
    <title> Child window for Web Messaging tests </title>
</head>
<body>
    <script>
        if (window.opener)
        {
            window.onload = function()
            {
                try
                {
                    window.opener.postMessage("MSG_ONLOAD_FIRED", "*");
                }
                catch(ex)
                {
                    window.close();
                }
            }
        }

        window.onmessage = function(e)
        {
            try
            {
                if (typeof(e.data) == "object" && typeof(e.data.test) == "string")
                {
                    eval(e.data.test);
                }
                else if (e.data == "*" || e.data == "/")
                {
                    e.source.postMessage(e.data, e.data);
                }
                else
                {
                    e.source.postMessage(e.data, e.origin);
                }

                if (e.data == "ports")
                {
                    var total = e.ports.length;
                    for (var i=0; i<total; i++)
                    {
                        e.ports[i].onmessage = function (evt)
                        {
                            evt.target.postMessage(evt.data);
                        }
                    }
                }
            }
            catch(ex)
            {
            }
        }
    </script>
</body>
</html>