Refactorings surrounding HostResolver:...

net/tools/fetch/fetch_client.cc

 // Copyright (c) 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 "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
 #include "base/stats_counters.h"
 #include "base/string_util.h"
@@ skipping 109 matching lines @@
     usage(argv[0]);
   int client_limit = 1;
   if (parsed_command_line.HasSwitch(L"n"))
     StringToInt(WideToASCII(parsed_command_line.GetSwitchValue(L"n")),
                 &client_limit);
   bool use_cache = parsed_command_line.HasSwitch(L"use-cache");
 
   // Do work here.
   MessageLoop loop;
 
-  scoped_refptr<net::HostResolver> host_resolver(new net::HostResolver);
+  scoped_refptr<net::HostResolver> host_resolver(
+      net::CreateSystemHostResolver());
+
   scoped_ptr<net::ProxyService> proxy_service(net::ProxyService::CreateNull());
   net::HttpTransactionFactory* factory = NULL;
   if (use_cache) {
     factory = new net::HttpCache(host_resolver, proxy_service.get(), 0);
   } else {
     factory = new net::HttpNetworkLayer(
         net::ClientSocketFactory::GetDefaultFactory(), host_resolver,
         proxy_service.get());
   }
 
@@ skipping 40 matching lines @@
       std::string name(table.GetRowName(index));
       if (name.length() > 0) {
         int value = table.GetRowValue(index);
         printf("%s:\t%d\n", name.c_str(), value);
       }
     }
     printf("</stats>\n");
   }
   return 0;
 }