custom-highlight-painting-iframe-001.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: </title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="match" href="custom-highlight-painting-iframe-001-ref.html">
<meta name="assert" value="Registered Highlights inside an iframe are correctly painted.">
<body>
<iframe
  id="iframe"
  src="resources/iframe-code.html"
  >
</iframe>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-painting-iframe-001.html