chromium/chrome/test/data/extensions/platform_apps/web_view/src_attribute/main.html

<!--
Copyright 2012 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<html>
<body>
  <webview src="data:text/html,<body>One</body>"
      style="width: 300px; height: 200px;">
  </webview>

<script src="main.js"></script>
</body>
</html>