637116.html
<!DOCTYPE html>
<html>
<head>
<script>
function K(v) { return function() { return v; } }
var errorProxy = Proxy.create({get: function() { throw new Error(); }});
function boom()
{
var focused = document.createElementNS("http://www.w3.org/1999/xhtml", "input");
document.body.appendChild(focused);
var otherWin = window.open("data:text/html,1", "_blank", "width=200,height=200");
try { otherWin.history.replaceState(errorProxy, "title", "replaceState.html"); } catch(e) {}
focused.focus();
focused.addEventListener("foo", K(otherWin.applicationCache), false);
otherWin.close();
}
</script>
</head>
<body onload="boom();">
<button onclick="boom();">If you have popups blocked, click here to start the leak test</button>
</body>
</html>
