chromium/src/third_party/blink/web_tests/fast/forms/select/listbox-appearance-separator.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <head>
 <script>
 window.enablePixelTesting = true;
 </script>
 <script src="../../../resources/js-test.js"></script>
 </head>
 <body>
 <p>There should be a separator between two selected options.</p>

 <select multiple id="listbox"></select>

 <script>
 var listbox = document.getElementById('listbox');
 listbox.appendChild(new Option('foo', 'foo', true, true));
 listbox.appendChild(document.createElement('hr'));
 listbox.appendChild(new Option('bar', 'bar', true, true));
 </script>

 </body>
	<!DOCTYPE html>
	<head>
	<script>
	window.enablePixelTesting = true;
	</script>
	<script src="../../../resources/js-test.js"></script>
	</head>
	<body>
	<p>There should be a separator between two selected options.</p>

	<select multiple id="listbox"></select>

	<script>
	var listbox = document.getElementById('listbox');
	listbox.appendChild(new Option('foo', 'foo', true, true));
	listbox.appendChild(document.createElement('hr'));
	listbox.appendChild(new Option('bar', 'bar', true, true));
	</script>

	</body>