LayoutTests/fast/css/user-stylesheet-crash.html - WebKit - Git at Google

 <html>
 <head>
 <script>
 function createIframe()
 {
     var iframe = document.createElement("iframe");
     document.body.appendChild(iframe);
     var iframeDocument = iframe.contentDocument;
     var link = iframeDocument.createElement("link");
     link.setAttribute("rel", "stylesheet");
     link.setAttribute("href", "does_not_exist.css");
     iframeDocument.head.appendChild(link);
     if (window.testRunner) {
         testRunner.addUserStyleSheet("#test { color: blue: }", true);
         setTimeout("window.testRunner.notifyDone()", 100);
     }
 }

 if (window.testRunner) {
     testRunner.dumpAsText();
     testRunner.waitUntilDone();
     testRunner.addUserStyleSheet("#test { color: red: }", true);
 }
 setTimeout("createIframe()", 0);

 </script>
 </head>
 <body>
 This test requires DRT. It passes if it doesn't crash.
 </body>
 </html>
	<html>
	<head>
	<script>
	function createIframe()
	{
	var iframe = document.createElement("iframe");
	document.body.appendChild(iframe);
	var iframeDocument = iframe.contentDocument;
	var link = iframeDocument.createElement("link");
	link.setAttribute("rel", "stylesheet");
	link.setAttribute("href", "does_not_exist.css");
	iframeDocument.head.appendChild(link);
	if (window.testRunner) {
	testRunner.addUserStyleSheet("#test { color: blue: }", true);
	setTimeout("window.testRunner.notifyDone()", 100);
	}
	}

	if (window.testRunner) {
	testRunner.dumpAsText();
	testRunner.waitUntilDone();
	testRunner.addUserStyleSheet("#test { color: red: }", true);
	}
	setTimeout("createIframe()", 0);

	</script>
	</head>
	<body>
	This test requires DRT. It passes if it doesn't crash.
	</body>
	</html>