Fold UpdateModel into UpdateScreen.

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

Index: chrome/browser/chromeos/login/screens/update_model.h
diff --git a/chrome/browser/chromeos/login/screens/update_model.h b/chrome/browser/chromeos/login/screens/update_model.h
deleted file mode 100644
index 2a8a7ed21ea0b06c822aeffb3da2280877286729..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/login/screens/update_model.h
+++ /dev/null
@@ -1,37 +0,0 @@
-// 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_UPDATE_MODEL_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_UPDATE_MODEL_H_
-
-#include "chrome/browser/chromeos/login/screens/base_screen.h"
-
-namespace chromeos {
-
-class BaseScreenDelegate;
-class UpdateView;
-
-class UpdateModel : public BaseScreen {
- public:
-  static const char kUserActionCancelUpdateShortcut[];
-  static const char kContextKeyEstimatedTimeLeftSec[];
-  static const char kContextKeyShowEstimatedTimeLeft[];
-  static const char kContextKeyUpdateMessage[];
-  static const char kContextKeyShowCurtain[];
-  static const char kContextKeyShowProgressMessage[];
-  static const char kContextKeyProgress[];
-  static const char kContextKeyProgressMessage[];
-  static const char kContextKeyCancelUpdateShortcutEnabled[];
-
-  explicit UpdateModel(BaseScreenDelegate* base_screen_delegate);
-  ~UpdateModel() override;
-
-  // This method is called, when view is being destroyed. Note, if model
-  // is destroyed earlier then it has to call Unbind().
-  virtual void OnViewDestroyed(UpdateView* view) = 0;
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_UPDATE_MODEL_H_