Implement upgrade notifications....

chrome/browser/views/update_recommended_message_box.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_VIEWS_UPDATE_RECOMMENDED_MESSAGE_BOX_H_
+#define CHROME_BROWSER_VIEWS_UPDATE_RECOMMENDED_MESSAGE_BOX_H_
+
+#include "base/basictypes.h"
+#include "gfx/native_widget_types.h"
+#include "views/window/dialog_delegate.h"
+
+class MessageBoxView;
+class PrefService;
+
+// A dialog box that tells the user that an update is recommended in order for
+// the latest version to be put to use.
+class UpdateRecommendedMessageBox : public views::DialogDelegate {
+ public:
+  // This box is modal to |parent_window|.
+  static void ShowMessageBox(gfx::NativeWindow parent_window);
+
+  // Register preferences specific to this view.
+  static void RegisterUpdateRecommendedPrefs(PrefService* prefs);
+
+  // Overridden from views::DialogDelegate:
+  virtual bool Accept();
+
+ protected:
+  // Overridden from views::DialogDelegate:
+  virtual int GetDialogButtons() const;
+  virtual std::wstring GetDialogButtonLabel(
+      MessageBoxFlags::DialogButton button) const;
+  virtual std::wstring GetWindowTitle() const;
+
+  // Overridden from views::WindowDelegate:
+  virtual void DeleteDelegate();
+  virtual bool IsModal() const;
+  virtual views::View* GetContentsView();
+
+ private:
+  explicit UpdateRecommendedMessageBox(gfx::NativeWindow parent_window);
+  virtual ~UpdateRecommendedMessageBox();
+
+  MessageBoxView* message_box_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdateRecommendedMessageBox);
+};
+
+#endif  // CHROME_BROWSER_VIEWS_UPDATE_RECOMMENDED_MESSAGE_BOX_H_