Google codestyle prescribes sorting #include filenames within a section....

chrome/browser/chromeos/login/existing_user_controller.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_EXISTING_USER_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_EXISTING_USER_CONTROLLER_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
 #include "base/timer.h"
 #include "chrome/browser/chromeos/login/background_view.h"
 #include "chrome/browser/chromeos/login/captcha_view.h"
 #include "chrome/browser/chromeos/login/login_status_consumer.h"
 #include "chrome/browser/chromeos/login/message_bubble.h"
 #include "chrome/browser/chromeos/login/password_changed_view.h"
+#include "chrome/browser/chromeos/login/user_controller.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
-#include "chrome/browser/chromeos/login/user_controller.h"
 #include "chrome/browser/chromeos/wm_message_listener.h"
 #include "chrome/common/net/gaia/gaia_auth_consumer.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
 #include "gfx/size.h"
 
 namespace chromeos {
 
 class Authenticator;
 class HelpAppLauncher;
 class MessageBubble;
@@ skipping 152 matching lines @@
 
   // Help application used for help dialogs.
   scoped_ptr<HelpAppLauncher> help_app_;
 
   DISALLOW_COPY_AND_ASSIGN(ExistingUserController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_EXISTING_USER_CONTROLLER_H_