chrome/browser/resources/net_internals/alt_svc_view.html

<div id=alt-svc-view-tab-content class=content-box>
  <h4>Alternate Service Mappings</h4>
  <div id=alt-svc-view-alternate-protocol-mappings>
    <div jsdisplay="altSvcMappings.length == 0">None</div>
    <div jsdisplay="altSvcMappings.length != 0">
      <table class="styled-table">
        <thead>
          <tr>
            <th>Server</th>
            <th>Alternative Service</th>
          </tr>
        </thead>
        <tbody>
          <tr jsselect="altSvcMappings">
            <td jscontent="server"></td>
            <td jscontent="alternative_service"></td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>
</div>