chromium/third_party/blink/manual_tests/localstorage-empty-database.html

<html>
<body>
<script type="text/javascript">
  var x = localStorage.getItem('foo');
</script>
<p>This page has called <code>localStorage.getItem('foo')</code>.
Since no data has been stored, no database file should have been created.</p>

<p>If you click <a href="javascript:localStorage.setItem('bar', 'baz');">here</a>, data will be stored, and a database file should be created.</p>

<p>If you click <a href="javascript:localStorage.clear();">here</a>, the local storage will be cleared, and the database file should be gone when the browser is closed.</p>

<p>(This is for <a href="https://bugs.webkit.org/show_bug.cgi?id=40301">https://bugs.webkit.org/show_bug.cgi?id=40301</a>
and <a href="https://bugs.webkit.org/show_bug.cgi?id=40767">https://bugs.webkit.org/show_bug.cgi?id=40767</a>.)</p>
</body>
</html>