Implement upgrade notifications....

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 2178 matching lines @@
         'browser/translate/languages_menu_model.cc',
         'browser/translate/languages_menu_model.h',
         'browser/translate/options_menu_model.cc',
         'browser/translate/options_menu_model.h',
         'browser/translate/translate_infobars_delegates.cc',
         'browser/translate/translate_infobars_delegates.h',
         'browser/translate/translate_manager.cc',
         'browser/translate/translate_manager.h',
         'browser/translate/translate_prefs.cc',
         'browser/translate/translate_prefs.h',
+        'browser/upgrade_detector.cc',
+        'browser/upgrade_detector.h',
         'browser/user_data_manager.cc',
         'browser/user_data_manager.h',
         'browser/user_style_sheet_watcher.cc',
         'browser/user_style_sheet_watcher.h',
         'browser/utility_process_host.cc',
         'browser/utility_process_host.h',
         'browser/view_ids.h',
         'browser/views/about_chrome_view.cc',
         'browser/views/about_chrome_view.h',
         'browser/views/about_ipc_dialog.cc',
@@ skipping 318 matching lines @@
         'browser/views/theme_install_bubble_view.cc',
         'browser/views/theme_install_bubble_view.h',
         'browser/views/toolbar_view.cc',
         'browser/views/toolbar_view.h',
         'browser/views/uninstall_view.cc',
         'browser/views/uninstall_view.h',
         'browser/views/url_picker.cc',
         'browser/views/url_picker.h',
         'browser/views/unhandled_keyboard_event_handler.cc',
         'browser/views/unhandled_keyboard_event_handler.h',
+        'browser/views/update_recommended_message_box.cc',
+        'browser/views/update_recommended_message_box.h',
         'browser/views/user_data_dir_dialog.cc',
         'browser/views/user_data_dir_dialog.h',
         'browser/visitedlink_master.cc',
         'browser/visitedlink_master.h',
         'browser/visitedlink_event_listener.cc',
         'browser/visitedlink_event_listener.h',
         'browser/webdata/autofill_change.h',
         'browser/webdata/autofill_entry.cc',
         'browser/webdata/autofill_entry.h',
         'browser/webdata/web_data_service.cc',
@@ skipping 981 matching lines @@
       ],
     },
   ],
 }
 
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