document-user-activation-cross-origin-feature-policy-header.html

<!DOCTYPE html>
<html>
<title>Test that the header will override allow=autoplay.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/autoplay-test.js"></script>
<!-- This is a cross origin iframe that disables autoplay with a HTTP header -->
<iframe allow="autoplay"></iframe>
<script>
  runTest(simulateViewportClick, [
    ['http://127.0.0.1:8000/media/autoplay/document-user-activation-cross-origin-feature-policy-header.html', true],
    ['http://localhost:8000/media/autoplay/resources/nested-frame-with-header.php', false]
  ]);
</script>
</html>

chromium/third_party/blink/web_tests/http/tests/media/autoplay/document-user-activation-cross-origin-feature-policy-header.html