LayoutTests/loader/stateobjects/resources/pushstate-iframe.html

<script>

var count = 1;

function iframeClicked()
{
    try {
        history.pushState(top.object, top.object, "#" + top.object);
    } catch (e) {
        top.log("Expected exception: " + e);
        if (window.testRunner)
            testRunner.notifyDone();    
    }

    ++count;

    if (count > 50) {
        top.log("This has gone on for way too long");
        if (window.testRunner)
            testRunner.notifyDone();
    }

    setTimeout(top.click, 0);
}

</script>