third_party/blink/web_tests/battery-status/no-gc-with-pending-promise.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
 <script src="../resources/gc.js"></script>
 <script>
 promise_test(async () => {
   let batteryManagerPromise = navigator.getBattery();
   gc();
   await batteryManagerPromise;
 }, "navigator.getBattery() should resolve even in the face of GC");
 </script>
	<!DOCTYPE html>
	<script src="../resources/testharness.js"></script>
	<script src="../resources/testharnessreport.js"></script>
	<script src="../resources/gc.js"></script>
	<script>
	promise_test(async () => {
	let batteryManagerPromise = navigator.getBattery();
	gc();
	await batteryManagerPromise;
	}, "navigator.getBattery() should resolve even in the face of GC");
	</script>