Update screen refactoring, exit on successful update.

chrome/browser/chromeos/login/update_view.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_UPDATE_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UPDATE_VIEW_H_
 
 #include "views/view.h"
 
 namespace views {
@@ skipping 22 matching lines @@
   }
 
   // Advances view's progress bar. Maximum progress is 100.
   virtual void AddProgress(int progress);
 
   // views::View implementation:
   virtual void Layout();
   virtual bool AcceleratorPressed(const views::Accelerator& a);
 
  private:
+  // Creates Label control and adds it as a child.
+  void InitLabel(views::Label** label);
+
   // Keyboard accelerator to allow cancelling update by hitting escape.
   views::Accelerator escape_accelerator_;
 
   // Dialog controls.
   views::Label* installing_updates_label_;
   views::Label* escape_to_skip_label_;
   views::ProgressBar* progress_bar_;
 
   // Notifications receiver.
   chromeos::ScreenObserver* observer_;
   // Update controller.
   chromeos::UpdateController* controller_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UPDATE_VIEW_H_