third_party/blink/web_tests/fast/loader/detach-while-printing.html

<script>
if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.waitUntilDone();
}
print();
setTimeout(() => {
  var child = document.querySelector('object');
  child.parentNode.removeChild(child);
  if (window.testRunner)
    testRunner.notifyDone();
});
</script>
<object data="/404-dir-should-not-exist/"></object>
Test passes if we don't crash.