first-run: Refactor Upgrade class into a common upgrade_util API.

chrome/browser/first_run/try_chrome_dialog_view.h

 // Copyright (c) 2011 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_FIRST_RUN_TRY_CHROME_DIALOG_VIEW_H_
 #define CHROME_BROWSER_FIRST_RUN_TRY_CHROME_DIALOG_VIEW_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "chrome/browser/first_run/upgrade.h"
+#include "chrome/browser/first_run/upgrade_util.h"
 #include "views/controls/button/button.h"
 #include "views/controls/link.h"
 #include "ui/gfx/native_widget_types.h"
 
 class ProcessSingleton;
 
 namespace gfx {
 class Rect;
 }
 
@@ skipping 18 matching lines @@
 //
 class TryChromeDialogView : public views::ButtonListener,
                             public views::LinkController {
  public:
   explicit TryChromeDialogView(size_t version);
   virtual ~TryChromeDialogView();
 
   // Shows the modal dialog asking the user to try chrome. Note that the dialog
   // has no parent and it will position itself in a lower corner of the screen.
   // The dialog does not steal focus and does not have an entry in the taskbar.
-  Upgrade::TryResult ShowModal(ProcessSingleton* process_singleton);
+  upgrade_util::TryResult ShowModal(ProcessSingleton* process_singleton);
 
  protected:
   // views::ButtonListener:
   // We have two buttons and according to what the user clicked we set |result_|
   // and we should always close and end the modal loop.
   virtual void ButtonPressed(views::Button* sender,
                              const views::Event& event) OVERRIDE;
 
   // views::LinkController:
   // If the user selects the link we need to fire off the default browser that
@@ skipping 19 matching lines @@
   void SetToastRegion(gfx::NativeWindow window, int w, int h);
 
   // Controls which version of the text to use.
   size_t version_;
 
   // We don't own any of these pointers. The |popup_| owns itself and owns the
   // other views.
   views::Widget* popup_;
   views::RadioButton* try_chrome_;
   views::RadioButton* kill_chrome_;
-  Upgrade::TryResult result_;
+  upgrade_util::TryResult result_;
 
   DISALLOW_COPY_AND_ASSIGN(TryChromeDialogView);
 };
 
 #endif  // CHROME_BROWSER_FIRST_RUN_TRY_CHROME_DIALOG_VIEW_H_