weblayer/test/data/before_unload.html - chromium/src - Git at Google

 <html>
   <body onbeforeunload="return runBeforeUnload()">
   </body>
   <script>
     function runBeforeUnload() {
       return "foo";
     }
   </script>
 </html>
	<html>
	<body onbeforeunload="return runBeforeUnload()">
	</body>
	<script>
	function runBeforeUnload() {
	return "foo";
	}
	</script>
	</html>