cros: Fold ResetModel into ResetScreen

chrome/browser/chromeos/login/screens/reset_model.h

-// Copyright 2015 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_SCREENS_RESET_MODEL_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_RESET_MODEL_H_
-
-#include <string>
-
-#include "chrome/browser/chromeos/login/screens/base_screen.h"
-
-namespace chromeos {
-
-class BaseScreenDelegate;
-class ResetView;
-
-class ResetModel : public BaseScreen {
- public:
-  static const char kUserActionCancelReset[];
-  static const char kUserActionResetRestartPressed[];
-  static const char kUserActionResetPowerwashPressed[];
-  static const char kUserActionResetLearnMorePressed[];
-  static const char kUserActionResetRollbackToggled[];
-  static const char kUserActionResetShowConfirmationPressed[];
-  static const char kUserActionResetResetConfirmationDismissed[];
-  static const char kContextKeyIsRestartRequired[];
-  static const char kContextKeyIsRollbackAvailable[];
-  static const char kContextKeyIsRollbackChecked[];
-  static const char kContextKeyIsConfirmational[];
-  static const char kContextKeyIsOfficialBuild[];
-  static const char kContextKeyScreenState[];
-
-  explicit ResetModel(BaseScreenDelegate* base_screen_delegate);
-  ~ResetModel() override;
-
-  // Called when actor is destroyed so there's no dead reference to it.
-  virtual void OnViewDestroyed(ResetView* view) = 0;
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_RESET_MODEL_H_