File: 1548057.html

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file content (42 lines) | stat: -rw-r--r-- 1,275 bytes parent folder | download | duplicates (31) 
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<!doctype html>
<html class="reftest-wait">
<body>
<script>
  let parentDoc = `
    <!doctype html>
    <script>
    onload = function() {
      let observer = new ResizeObserver(_ => {
        let parentFrame = window.parent.document.querySelector("iframe");
        parentFrame.getBoundingClientRect();
        parentFrame.style.display = "none";
        parentFrame.getBoundingClientRect();
        parentFrame.srcdoc = ""; // Navigate ourselves away.
      });

      setTimeout(() => observer.observe(document.documentElement), 0);
    }
  </` + 'script>';
  let iframe = document.createElement("iframe");
  iframe.srcdoc = parentDoc;
  iframe.onload = function() {
    if (this.srcdoc !== "") // We're only interested on the second load.
      return;
    SpecialPowers.forceGC();
    SpecialPowers.forceCC();
    requestAnimationFrame(() => {
      requestAnimationFrame(() => {
        SpecialPowers.forceGC();
        SpecialPowers.forceCC();
        iframe.style.display = "";
        requestAnimationFrame(() => {
          requestAnimationFrame(() => {
            // If we haven't crashed by now, we should be fine.
            document.documentElement.className = "";
          })
        })
      })
    });
  };
  document.body.appendChild(iframe);
</script>