Add a command line flag to change the default number of parallel DNS requests...

net/tools/fetch/fetch_client.cc

 // Copyright (c) 2010 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 "build/build_config.h"
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
@@ skipping 115 matching lines @@
     usage(argv[0]);
   int client_limit = 1;
   if (parsed_command_line.HasSwitch("n"))
     StringToInt(parsed_command_line.GetSwitchValueASCII("n"), &client_limit);
   bool use_cache = parsed_command_line.HasSwitch("use-cache");
 
   // Do work here.
   MessageLoop loop(MessageLoop::TYPE_IO);
 
   scoped_refptr<net::HostResolver> host_resolver(
-      net::CreateSystemHostResolver());
+      net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism));
 
   scoped_refptr<net::ProxyService> proxy_service(
       net::ProxyService::CreateNull());
   scoped_refptr<net::SSLConfigService> ssl_config_service(
       net::SSLConfigService::CreateSystemSSLConfigService());
   net::HttpTransactionFactory* factory = NULL;
   scoped_ptr<net::HttpAuthHandlerFactory> http_auth_handler_factory(
       net::HttpAuthHandlerFactory::CreateDefault());
   if (use_cache) {
     factory = new net::HttpCache(host_resolver, proxy_service,
@@ skipping 49 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;
 }