LayoutTests/http/tests/security/resources/cross-frame-iframe.html - WebKit - Git at Google

 <html>
 <head>
     <script>
         function fireSentinel()
         {
             parent.postMessage("LOADED", "*");
             if (window.testRunner)
                 testRunner.globalFlag = true;
         }
     </script>
 </head>
 <body onload="fireSentinel();">
     <p id='accessMe'></p>
     <p>Inner iframe.</p>
 </body>
 </html>
	<html>
	<head>
	<script>
	function fireSentinel()
	{
	parent.postMessage("LOADED", "*");
	if (window.testRunner)
	testRunner.globalFlag = true;
	}
	</script>
	</head>
	<body onload="fireSentinel();">
	<p id='accessMe'></p>
	<p>Inner iframe.</p>
	</body>
	</html>