chromium/third_party/blink/web_tests/virtual/forced-high-contrast-colors/fast/css/forced-colors-mode/backplate/forced-colors-mode-backplate-07.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>
  Forced colors mode - backplate.
  Tests backplate invalidation.
</title>
<link rel="help" href="https://www.w3.org/TR/css-color-adjust-1/#forced">
<link rel=match href="forced-colors-mode-backplate-07-expected.html">
<style>
  body {
    background-image: url("../resources/test-image.jpg");
    font-family: Ahem;
    font-size: 10px;
  }
</style>
<body>
  <span>
    There should be a backplate covering one line of text.
    <br>
    <span id="text">this second line should be removed</span>
    <br>
  </span>
  <script>
    if (window.testRunner)
      testRunner.waitUntilDone();
    window.onload = function() {
      requestAnimationFrame(function() {
        text.innerText = '';
        if (window.testRunner)
          testRunner.notifyDone();
      });
    }
  </script>
</body>