Update the request time of http cache entries on 304....

net/http/http_cache.cc

 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_cache.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 1426 matching lines @@
       }
 
       // Are we expecting a response to a conditional query?
       if (mode_ == READ_WRITE || mode_ == UPDATE) {
         if (new_response->headers->response_code() == 304 || partial_content) {
           // Update cached response based on headers in new_response.
           // TODO(wtc): should we update cached certificate
           // (response_.ssl_info), too?
           response_.headers->Update(*new_response->headers);
           response_.response_time = new_response->response_time;
+          response_.request_time = new_response->request_time;
 
           if (response_.headers->HasHeaderValue("cache-control", "no-store")) {
             cache_->DoomEntry(cache_key_);
           } else {
             // If we are already reading, we already updated the headers for
             // this request; doing it again will change Content-Length.
             if (!reading_)
               WriteResponseInfoToEntry();
           }
 
@@ skipping 605 matching lines @@
       static_cast<net::HttpNetworkLayer*>(network_layer_.get());
   HttpNetworkSession* session = network->GetSession();
   if (session) {
     session->tcp_socket_pool()->CloseIdleSockets();
   }
 }
 
 //-----------------------------------------------------------------------------
 
 }  // namespace net