chromium/src/third_party/blink/web_tests/external/wpt/feature-policy/resources/feature-policy-idle-detection-worker.html - manifest_repos/chromium_src - Git at Google

 <script>
 'use strict';

 let worker = new Worker('feature-policy-idle-detection-worker.js');

 worker.onmessage = event => {
   window.parent.postMessage(event.data, '*');
 };
 worker.postMessage({ type: 'ready' });
 </script>
	<script>
	'use strict';

	let worker = new Worker('feature-policy-idle-detection-worker.js');

	worker.onmessage = event => {
	window.parent.postMessage(event.data, '*');
	};
	worker.postMessage({ type: 'ready' });
	</script>