cros: Refactor of BaseScreen::GetName to BaseScreen::screen_id.

chrome/browser/chromeos/login/screens/update_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_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;
 
-  // BaseScreen implementation:
-  std::string GetName() const 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_