third_party/blink/web_tests/external/wpt/signed-exchange/resources/failure.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <title>Content of invalid signed exchange</title>
 <script>
 window.addEventListener('message', (event) => {
   event.data.port.postMessage("FAIL if this content is loaded");
 }, false);
 </script>
	<!DOCTYPE html>
	<title>Content of invalid signed exchange</title>
	<script>
	window.addEventListener('message', (event) => {
	event.data.port.postMessage("FAIL if this content is loaded");
	}, false);
	</script>