Use a direct include of strings headers in chromeos/.

chromeos/dbus/ibus/ibus_engine_factory_service.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/dbus/ibus/ibus_engine_factory_service.h"
 
 #include <map>
 #include <string>
 
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "chromeos/dbus/ibus/ibus_constants.h"
 #include "chromeos/ime/ibus_bridge.h"
 #include "dbus/bus.h"
+#include "dbus/exported_object.h"
 #include "dbus/message.h"
-#include "dbus/exported_object.h"
 
 namespace chromeos {
 
 namespace {
 const char* kObjectPathPrefix = "/org/freedesktop/IBus/Engine/";
 }  // namespace
 
 class IBusEngineFactoryServiceImpl : public IBusEngineFactoryService {
  public:
   explicit IBusEngineFactoryServiceImpl(dbus::Bus* bus)
@@ skipping 138 matching lines @@
 IBusEngineFactoryService* IBusEngineFactoryService::Create(
     dbus::Bus* bus,
     DBusClientImplementationType type) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new IBusEngineFactoryServiceImpl(bus);
   else
     return new IBusEngineFactoryServiceDaemonlessImpl();
 }
 
 }  // namespace chromeos