third_party/blink/web_tests/fast/dom/htmlallcollection-reachable.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <script src="../../resources/js-test.js"></script>
 <script>

 document.all.customProperty = 42;
 gc();
 shouldBe('document.all.customProperty', '42');

 </script>
	<!DOCTYPE html>
	<script src="../../resources/js-test.js"></script>
	<script>

	document.all.customProperty = 42;
	gc();
	shouldBe('document.all.customProperty', '42');

	</script>