Implement upgrade notifications....

chrome/browser/browser_window.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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_BROWSER_WINDOW_H_
 
 #include "chrome/browser/tab_contents/navigation_entry.h"
 #include "chrome/common/content_settings_types.h"
 #include "gfx/native_widget_types.h"
@@ skipping 165 matching lines @@
 
   // Shows or hides the bookmark bar depending on its current visibility.
   virtual void ToggleBookmarkBar() = 0;
 
   // Shows or hides the extension shelf depending on its current visibility.
   virtual void ToggleExtensionShelf() = 0;
 
   // Shows the About Chrome dialog box.
   virtual views::Window* ShowAboutChromeDialog() = 0;
 
+  // Shows the Update Recommended dialog box.
+  virtual void ShowUpdateChromeDialog() = 0;
+
   // Shows the Task manager.
   virtual void ShowTaskManager() = 0;
 
   // Shows the Bookmark bubble. |url| is the URL being bookmarked,
   // |already_bookmarked| is true if the url is already bookmarked.
   virtual void ShowBookmarkBubble(const GURL& url, bool already_bookmarked) = 0;
 
   // Whether or not the shelf view is visible.
   virtual bool IsDownloadShelfVisible() const = 0;
 
@@ skipping 151 matching lines @@
 
   // Returns the TabContentsContainer.
   virtual views::View* GetTabContentsContainerView() const = 0;
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 };
 
 #endif  // CHROME_BROWSER_BROWSER_WINDOW_H_