third_party/WebKit/LayoutTests/fast/events/resources/onbeforeunload-focused-iframe-frame.html - chromium/src - Git at Google

 <html>
 <body onload="load()">
     This frame should get the focus.
     <input id="box"></input>
     <script>
         function load()
         {
             document.getElementById("box").focus();
             window.top.simulateCloseWindow();
         }
     </script>
 </body>
 </html>
	<html>
	<body onload="load()">
	This frame should get the focus.
	<input id="box"></input>
	<script>
	function load()
	{
	document.getElementById("box").focus();
	window.top.simulateCloseWindow();
	}
	</script>
	</body>
	</html>