chromium/third_party/blink/web_tests/fast/frames/detach-frame-nested-no-crash.html

<!DOCTYPE html>
<html>
<script src="../../resources/js-test.js"></script>
<script>
description("Verifies that nested frame detach does not crash.");

if (window.testRunner)
    testRunner.dumpAsText();

var count = 0;
function removeFrame() {
    document.body.removeChild(document.getElementById("frame"));
    if (++count == 2)
        testRunner.notifyDone();
}
</script>
<iframe id="frame" src="resources/detach-frame-nested-subframe.html"></iframe>
</html>