chrome/common/extensions/docs/templates/private/footer.html

<div id="gc-footer">
  <button class="google-button" id="scroll-to-top">↑</button>
  <button class="google-button" id="send-feedback">Send Feedback</button>
  <div class="text">
    <p>
      Except as otherwise <a href="http://code.google.com/policies.html#restrictions">noted</a>,
      the content of this page is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons
      Attribution 3.0 License</a>, and code samples are licensed under the
      <a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>.
    </p>
    <p>
      ©2013 Google
    </p>
    <script src="{{static}}/js/platform_chooser.js" type="text/javascript"></script>
    <script src="{{static}}/js/popup.js" type="text/javascript"></script>
    <script src="{{static}}/js/prettify.js" type="text/javascript"></script>
    <script src="{{static}}/js/scroll.js" type="text/javascript"></script>
    <script src="{{static}}/js/sidebar.js" type="text/javascript"></script>
    <script src="{{static}}/js/tabs.js" type="text/javascript"></script>
    <script>
      (function() {
        // Auto syntax highlight all pre tags.
        var preElements = document.getElementsByTagName('pre');
        for (var i = 0; i < preElements.length; i++) {
          var preElement = preElements[i];
          preElement.classList.add('prettyprint');
          var datasetFilename = preElement.getAttribute('data-filename');
          if (datasetFilename) {
            var filename = document.createElement('div');
            filename.className = 'filename nocode';
            filename.textContent = datasetFilename;
            preElement.insertBefore(filename, preElement.firstChild);
          }
        }
        prettyPrint();
      })();
    </script>

    <!-- Feedback. -->
    <script type="text/javascript" src="//www.gstatic.com/feedback/api.js"></script>
    <script type="text/javascript">
      (function() {
       document.getElementById('send-feedback').addEventListener('click', function() {
         userfeedback.api.startFeedback({ productId: 86265 });
       });
      })();
    </script>
  </div>
</div>