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chromium/third_party/blink/web_tests/external/wpt/editing/crashtests/remove-editing-host-which-is-selected.html 

<!DOCTYPE html>
<meta charset="utf-8">
<script>
window.onload = () => {
  let s = window.getSelection()
  let r = document.createRange()
  r.selectNode(document.getElementById('b'))
  s.addRange(r)
  r = document.createRange()
  r.selectNode(document.getElementById('a'))
  s.addRange(r)
  document.documentElement.innerHTML = ''
}
</script>
<body id='a' contenteditable='true'>
<canvas tabindex='0'>
<audio id='b'>