LayoutTests/fast/loader/javascript-url-iframe-remove-on-navigate.html

<iframe src="http://does.not.exist/" id="target"></iframe>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

setTimeout(function() {
        document.getElementById("target").src = "javascript:alert('FAIL')";
    }, 0);

window.addEventListener("popstate", function() {
        document.write("PASS - Javascript URL blocked without crashing.");
        if (window.testRunner)
            testRunner.notifyDone();
    }, false);
</script>