chromium/third_party/blink/web_tests/wpt_internal/geolocation-api/resources/callback-to-remote-context-inner.html

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
  <head>
    <script type="module">
      import {GeolocationMock} from './geolocation-mock.js';

      window.init = function() {
          const mock = new GeolocationMock();
          mock.setGeolocationPermission(true);
          mock.setGeolocationPosition(51.478, -0.166, 100);
          window.parent.onIframeReady()
      }
    </script>
  </head>
  <body onload="init()">
  </body>
</html>