Use a direct include of strings headers in chromeos/.

chromeos/network/shill_property_handler.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/shill_property_handler.h"
 
 #include "base/bind.h"
 #include "base/format_macros.h"
 #include "base/stl_util.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/shill_device_client.h"
 #include "chromeos/dbus/shill_ipconfig_client.h"
 #include "chromeos/dbus/shill_manager_client.h"
 #include "chromeos/dbus/shill_service_client.h"
 #include "chromeos/network/network_event_log.h"
 #include "chromeos/network/network_state.h"
 #include "dbus/object_path.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
@@ skipping 482 matching lines @@
 
 void ShillPropertyHandler::NetworkDevicePropertyChangedCallback(
     const std::string& path,
     const std::string& key,
     const base::Value& value) {
   listener_->UpdateDeviceProperty(path, key, value);
 }
 
 }  // namespace internal
 }  // namespace chromeos