third_party/blink/web_tests/scrollbars/scrollbar-part-created-with-no-parent-crash.html - chromium/src - Git at Google

 <html>
 Test passes if it does not crash.
 <style>
 body
 {
     margin: 0;
 }
 ::-webkit-scrollbar {
     block-size: 65536;
     -webkit-border-image: url(does_not_exist) 0 2 0 2;
 }

 .inner:not(table) {
     padding: 400px;
 }
 </style>
 <script>
 if (window.testRunner)
     testRunner.dumpAsText();

 function showScroller()
 {
     var scroller = document.createElement('div');
     scroller.className = 'scroller';

     var contents = document.createElement('div')
     contents.className = 'inner';
     scroller.appendChild(contents);

     document.getElementById('container').appendChild(scroller);
 }

 function hideScroller()
 {
     var scroller = document.getElementById('container').querySelectorAll('.scroller')[0];
     scroller.parentNode.removeChild(scroller);
 }

 function doTest()
 {
     if (window.eventSender) {
         eventSender.mouseMoveTo(50, 40);
         eventSender.mouseMoveTo(50, 55);
         eventSender.mouseMoveTo(50, 0);
     }
 }

 window.addEventListener('load', doTest, false);
 </script>
 <div id="container" onmouseover="showScroller()" onmouseout="hideScroller()">
 <p>PASS</p>
 </div>
 </html>
	<html>
	Test passes if it does not crash.
	<style>
	body
	{
	margin: 0;
	}
	::-webkit-scrollbar {
	block-size: 65536;
	-webkit-border-image: url(does_not_exist) 0 2 0 2;
	}

	.inner:not(table) {
	padding: 400px;
	}
	</style>
	<script>
	if (window.testRunner)
	testRunner.dumpAsText();

	function showScroller()
	{
	var scroller = document.createElement('div');
	scroller.className = 'scroller';

	var contents = document.createElement('div')
	contents.className = 'inner';
	scroller.appendChild(contents);

	document.getElementById('container').appendChild(scroller);
	}

	function hideScroller()
	{
	var scroller = document.getElementById('container').querySelectorAll('.scroller')[0];
	scroller.parentNode.removeChild(scroller);
	}

	function doTest()
	{
	if (window.eventSender) {
	eventSender.mouseMoveTo(50, 40);
	eventSender.mouseMoveTo(50, 55);
	eventSender.mouseMoveTo(50, 0);
	}
	}

	window.addEventListener('load', doTest, false);
	</script>
	<div id="container" onmouseover="showScroller()" onmouseout="hideScroller()">
	<p>PASS</p>
	</div>
	</html>