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chromium/third_party/blink/web_tests/external/wpt/css/css-cascade/all-prop-revert-visited.html 

<!DOCTYPE html>
<title>CSS Cascade: all:revert in :visited</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade/#all-shorthand">
<link rel="match" href="all-prop-revert-visited-ref.html">
<style>
  :root { color: red; }
  a:visited { color: red; }
  a:visited { all: revert; }
</style>
<a href="">Test passes if this text has UA style for visited links</a>