src/third_party/web_platform_tests/webmessaging/message-channels/004-2.html - cobalt - Git at Google

 <!doctype html>
 <title>004-2</title>
 <script>
 onmessage = function(e) {
   var port = e.ports[0];
   port.onmessage = function(e) { // implied start()
     parent.postMessage(e.data, '*');
   }
 }
 </script>
	<!doctype html>
	<title>004-2</title>
	<script>
	onmessage = function(e) {
	var port = e.ports[0];
	port.onmessage = function(e) { // implied start()
	parent.postMessage(e.data, '*');
	}
	}
	</script>