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chromium/third_party/blink/web_tests/fast/css/containment/compositing-inputs-root-iframe-crash.html 

<!DOCTYPE html>
<script>
  if (window.testRunner)
    testRunner.dumpAsText();
</script>
<p>The test passes if it doesn't crash in debug.</p>
<iframe style="contain: strict;" src="http://doesnotexist/">
</iframe>