src/: Update the remaining include paths of string_split.h to its new location.

net/tools/gdig/gdig.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 <stdio.h>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/cancelable_callback.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
-#include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
+#include "base/strings/string_split.h"
 #include "base/time.h"
 #include "net/base/address_list.h"
 #include "net/base/host_cache.h"
 #include "net/base/host_resolver_impl.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
 #include "net/dns/dns_client.h"
 #include "net/dns/dns_config_service.h"
@@ skipping 464 matching lines @@
 }
 
 }  // empty namespace
 
 }  // namespace net
 
 int main(int argc, const char* argv[]) {
   net::GDig dig;
   return dig.Main(argc, argv);
 }