Tools/TestWebKitAPI/Tests/WebKitCocoa/localstorage-open-window-private.html - WebKit - Git at Google

 <!DOCTYPE html>
 <script>
 window.localStorage.setItem("local", "storage");

 var newWindow = window.open("about:blank");
 if (newWindow)
     window.webkit.messageHandlers.testHandler.postMessage("local:" + newWindow.localStorage.getItem("local"));
 else
     window.webkit.messageHandlers.testHandler.postMessage("open window fails");

 </script>
	<!DOCTYPE html>
	<script>
	window.localStorage.setItem("local", "storage");

	var newWindow = window.open("about:blank");
	if (newWindow)
	window.webkit.messageHandlers.testHandler.postMessage("local:" + newWindow.localStorage.getItem("local"));
	else
	window.webkit.messageHandlers.testHandler.postMessage("open window fails");

	</script>