Implement offline mode behind a flag

net/http/http_transaction_unittest.cc

 // Copyright (c) 2012 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_transaction_unittest.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/message_loop.h"
@@ skipping 246 matching lines @@
 
   std::string header_data = base::StringPrintf(
       "%s\n%s\n", resp_status.c_str(), resp_headers.c_str());
   std::replace(header_data.begin(), header_data.end(), '\n', '\0');
 
   response_.request_time = base::Time::Now();
   if (!t->request_time.is_null())
     response_.request_time = t->request_time;
 
   response_.was_cached = false;
+  response_.network_accessed = true;
 
   response_.response_time = base::Time::Now();
   if (!t->response_time.is_null())
     response_.response_time = t->response_time;
 
   response_.headers = new net::HttpResponseHeaders(header_data);
   response_.vary_data.Init(*request, *response_.headers);
   response_.ssl_info.cert_status = t->cert_status;
   data_ = resp_data;
 
@@ skipping 131 matching lines @@
 
     if (rv > 0)
       content.append(buf->data(), rv);
     else if (rv < 0)
       return rv;
   } while (rv > 0);
 
   result->swap(content);
   return net::OK;
 }