manifest-test-simple.html

<!DOCTYPE html>
<html>
<head>
  <link rel='manifest' href='/sandbox/manifest.json'>
  <meta name='viewport' content='width=device-width, user-scalable=no'>
</head>
<body>
  <div>Simple page with manifest</div>
  <a href='http://google.com'>navigate away</a>
  <button onclick="screen.orientation.lock('natural');">natural</button>
  <button onclick="screen.orientation.unlock();">unlock</button>
  <button onclick="history.replaceState({}, 'fake page', 'fake.html');">replaceState</button>
  <button onclick="var d=document.createElement('div'); d.innerHTML=document.location.href; document.body.appendChild(d)">url</button>
</body>
</html>