Use a direct include of strings headers in chromeos/.

chromeos/network/network_state.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 "chromeos/network/network_state.h"
 
 #include "base/i18n/icu_encoding_detection.h"
 #include "base/i18n/icu_string_conversions.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversion_utils.h"
 #include "chromeos/network/network_event_log.h"
 #include "chromeos/network/network_ui_data.h"
 #include "chromeos/network/onc/onc_utils.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace {
 
 bool ConvertListValueToStringVector(const base::ListValue& string_list,
                                     std::vector<std::string>* result) {
@@ skipping 308 matching lines @@
           connection_state == flimflam::kStateConfiguration ||
           connection_state == flimflam::kStateCarrier);
 }
 
 // static
 std::string NetworkState::IPConfigProperty(const char* key) {
   return base::StringPrintf("%s.%s", shill::kIPConfigProperty, key);
 }
 
 }  // namespace chromeos