LayoutTests/fast/animation/request-animation-frame-remove-iframe-in-callback.html

Test passes if it does not crash.
<iframe id=target></iframe>
<span id=result></span>
<script>
    if (window.testRunner) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
    }

    const target = document.getElementById("target");
    const contentWindow = target.contentWindow;
    contentWindow.requestAnimationFrame(() => {
        target.remove();
        if (window.testRunner) {
            setTimeout(() => { testRunner.notifyDone(); }, 0);
        }
    });
    contentWindow.requestAnimationFrame(() => { });
</script>