etc/ci/performance/page_load_test/example/example_sync.html - servo - Git at Google

 <!DOCTYPE html>
 <html>
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width" />
     <title>An example pageload test</title>
   </head>
   <body>
   Hello World
   <!-- window.performance.timing are recorded.
        Window closes after onLoad event triggered -->
   </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width" />
	<title>An example pageload test</title>
	</head>
	<body>
	Hello World
	<!-- window.performance.timing are recorded.
	Window closes after onLoad event triggered -->
	</body>
	</html>