2024472.html - mozsearch

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<!doctype html>

<html class="reftest-wait">

<meta charset="utf-8">

<title>adoptedStyleSheets adopt link tag</title>

<iframe id="ifr" src="about:blank"></iframe>

<script>

onload = async () => {

  let arr;

  (() => {

    let ifr = document.getElementById('ifr');

    let div = ifr.contentDocument.createElement('div');

    let shadow = div.attachShadow({mode: 'open'});

    let sheet = new ifr.contentWindow.CSSStyleSheet();

    shadow.adoptedStyleSheets[0] = sheet;

    arr = shadow.adoptedStyleSheets;

    document.adoptNode(div);

  })();

  dump("Force GC and CC\n");

  SpecialPowers.forceShrinkingGC();

  SpecialPowers.forceCC();

  SpecialPowers.forceShrinkingGC();

  SpecialPowers.forceCC();

  arr[0] = new CSSStyleSheet();

  document.documentElement.classList.remove("reftest-wait");

};

</script>

</html>