Bring the gh-pages branch up to date with the master branch

netlog_viewer/dns_view.html

 <!-- Host resolver info -->
 <div id=dns-view-tab-content class=content-box>
   <ul style='margin-top: 0'>
     <li><a href='#events&q=type:HOST_RESOLVER_IMPL_JOB%20is:active'>View pending lookups</a></li>
   </ul>
 
   <div>
     <h4>Async DNS Configuration</h4>
     <ul>
       <li>Internal DNS client enabled:
         <span id=dns-view-internal-dns-enabled></span>
         <span id=dns-view-internal-dns-invalid-config class=warning-text style="display: none;">
           (No valid configuration found)</span>
       </li>
     </ul>
     <table class="styled-table">
       <tbody id=dns-view-internal-dns-config-tbody></tbody>
     </table>
   </div>
 
   <h4>
     Host resolver cache
-    <input type=button value="Clear host cache" id=dns-view-clear-cache class="hide-when-not-capturing">
   </h4>
   <ul>
     <li>Capacity: <span id=dns-view-cache-capacity></span></li>
   </ul>
   <h4>Current State</h4>
   <ul>
     <li>Active entries: <span id=dns-view-cache-active></span></li>
     <li>Expired entries: <span id=dns-view-cache-expired></span></li>
   </ul>
 
   <table class="styled-table">
     <thead>
       <tr>
         <th>Hostname</th>
         <th>Family</th>
         <th>Addresses</th>
         <th>Expires</th>
       </tr>
     </thead>
     <tbody id=dns-view-cache-tbody>
     </tbody>
   </table>
 </div>