chrome/browser/resources/net_internals/http_pipeline_view.html

<div id=http-pipeline-view-tab-content class=content-box>
  <h4>HTTP Pipelining Status</h4>
  <ul>
    <li>HTTP Pipelining Enabled: <span id=http-pipeline-view-enabled-span>????</span></li>
  </ul>

  <h4>HTTP Pipelined Connections</h4>
    <!-- Only one of these two are shown -->
    <span id=http-pipeline-view-connections-none-span>None</span>
    <span id=http-pipeline-view-connections-link-span style="display: none;">
      <a href="#events&q=type:HTTP_PIPELINED_CONNECTION%20is:active">View live HTTP pipelined connections</a>
    </span>
  <p>
    <div id=http-pipeline-view-connections-div>
    </div>
  </p>

  <h4>Known Hosts</h4>
  <p>
    <div id=http-pipeline-view-known-hosts-div>
    </div>
  </p>
</div>