Codebase Browser
chromium
Go to App

chromium/third_party/blink/renderer/core/testing/data/frame_owner_properties.html 

<!DOCTYPE html>
<html>
<head>
</head>
<body>
  <div>Some content.</div>
  <div style="width: 2000px; height: 2000px;"></div>
</body>
</html>