Use a direct include of strings headers in chrome/browser/chromeos/.

chrome/browser/chromeos/input_method/ibus_controller_impl.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 "chrome/browser/chromeos/input_method/ibus_controller_impl.h"
 
 #include <algorithm>  // for std::reverse.
 #include <cstdio>
 #include <cstring>  // for std::strcmp.
 #include <set>
 #include <sstream>
 #include <stack>
 #include <utility>
 
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/environment.h"
 #include "base/files/file_path_watcher.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/rand_util.h"
-#include "base/stringprintf.h"
 #include "base/strings/string_split.h"
+#include "base/strings/stringprintf.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/ibus/ibus_client.h"
 #include "chromeos/dbus/ibus/ibus_config_client.h"
 #include "chromeos/dbus/ibus/ibus_constants.h"
 #include "chromeos/dbus/ibus/ibus_input_context_client.h"
 #include "chromeos/dbus/ibus/ibus_panel_service.h"
 #include "chromeos/dbus/ibus/ibus_property.h"
 #include "chromeos/ime/component_extension_ime_manager.h"
 #include "chromeos/ime/extension_ime_util.h"
@@ skipping 297 matching lines @@
 
 // static
 bool IBusControllerImpl::FindAndUpdatePropertyForTesting(
     const chromeos::input_method::InputMethodProperty& new_prop,
     chromeos::input_method::InputMethodPropertyList* prop_list) {
   return FindAndUpdateProperty(new_prop, prop_list);
 }
 
 }  // namespace input_method
 }  // namespace chromeos