chromium/src/third_party/blink/web_tests/external/wpt/portals/resources/portal-activate-broadcastchannel.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <script>
 onportalactivate = e => {
   let bc = new BroadcastChannel(new URL(location).searchParams.get('bc'));
   bc.postMessage({event: 'portalactivate', data: e.data});
   bc.close();
 };
 </script>
	<!DOCTYPE html>
	<script>
	onportalactivate = e => {
	let bc = new BroadcastChannel(new URL(location).searchParams.get('bc'));
	bc.postMessage({event: 'portalactivate', data: e.data});
	bc.close();
	};
	</script>