send-coop-headers.php | Explore in Territory

<?php
header('Content-Type: text/html');
header('Supports-Loading-Mode: fenced-frame');
header('Cross-Origin-Opener-Policy: same-origin');
?>

<html>
<body style="background: green;">
<script>
  if (window.testRunner)
    testRunner.notifyDone();
</script>
</body>
</html>

chromium/third_party/blink/web_tests/http/tests/fenced_frame/resources/send-coop-headers.php