viewport-2x-initial-scale-non-user-scalable.html

<html>
  <head>
    <meta name='viewport' content='initial-scale=2,user-scalable=no' />
  </head>
  <body>
    A page with the viewport set to 2x scale, non user-scalable.
  </body>
</html>

chromium/third_party/blink/renderer/core/testing/data/viewport-2x-initial-scale-non-user-scalable.html