Remove obsolete parameters from spdy_view.html.

chrome/browser/resources/net_internals/spdy_view.html

 <div id=spdy-view-tab-content class=content-box>
   <ul id=spdy-view-status style='margin-top:0'>
     <li>HTTP/2 Enabled: <span jscontent="enable_http2"></span></li>
-    <!-- "enable_spdy31" was removed at https://crrev.com/2115213002 in release 54.
-         It is here to support netlog json files from earlier browsers.
-         TODO(bnc): Remove around 2016 December. -->
-    <li>SPDY/3.1 Enabled: <span jscontent="enable_spdy31"></span></li>
-    <!-- "use_alternative_services" was removed at https://crrev.com/2011983002
-         in release 53.  It is here to support netlog json files from earlier browsers.
-         TODO(bnc): Remove around 2016 December. -->
-    <li>Use Alternative Service: <span jscontent="use_alternative_services"></span></li>
     <li>ALPN Protocols: <span jscontent="alpn_protos"></span></li>
-    <!-- "npn_protos" was removed at https://crrev.com/2111243004 in release 54.
-         It is here to support netlog json files from earlier browsers.
-         TODO(bnc): Remove around 2016 December. -->
-    <li>NPN Protocols: <span jscontent="npn_protos"></span></li>
   </ul>
 
   <h4>HTTP/2 sessions</h4>
   <div id=spdy-view-session-info>
     <!-- Only one of these two are shown -->
     <div jsdisplay="spdySessionInfo.length == 0">None</div>
     <div jsdisplay="spdySessionInfo.length != 0">
       <a href="#events&q=type:HTTP2_SESSION%20is:active">View live HTTP/2 sessions</a>
       <p>
         <table class="styled-table">
@@ skipping 20 matching lines @@
               <th>Error</th>
             </tr>
           </thead>
           <tbody>
             <tr jsselect="spdySessionInfo">
               <td><span jscontent="host_port_pair"></span>
                 <span jscontent="$this.aliases ? $this.aliases.join(' ') : ''"></span>
               </td>
               <td jscontent="proxy"></td>
               <td><a jsvalues=".href: '#events&q=id:' + source_id" jscontent="source_id"></a></td>
-              <!-- "protocol_negotiated" was renamed "negotiated_protocol" in release 54
-                   at https://crrev.com/2229693003.
-                   TODO(bnc): Remove support for netlog json files from earlier browsers around 2016 December. -->
-              <td jscontent="$this.negotiated_protocol == undefined ? $this.protocol_negotiated : $this.negotiated_protocol"></td>
+              <td jscontent="negotiated_protocol"></td>
               <td jscontent="active_streams"></td>
               <td jscontent="unclaimed_pushed_streams"></td>
               <td jscontent="max_concurrent_streams"></td>
               <td jscontent="streams_initiated_count"></td>
               <td jscontent="streams_pushed_count"></td>
               <td jscontent="streams_pushed_and_claimed_count"></td>
               <td jscontent="streams_abandoned_count"></td>
               <td jscontent="frames_received"></td>
               <td jscontent="is_secure"></td>
               <td jscontent="sent_settings"></td>
               <td jscontent="received_settings"></td>
               <td jscontent="send_window_size"></td>
               <td jscontent="recv_window_size"></td>
               <td jscontent="unacked_recv_window_bytes"></td>
               <td jscontent="error"></td>
             </tr>
           </tbody>
         </table>
       </p>
     </div>
   </div>
 </div>