Implement upgrade notifications....

chrome/common/notification_type.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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_COMMON_NOTIFICATION_TYPE_H_
 #define CHROME_COMMON_NOTIFICATION_TYPE_H_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
 // It is written as an enum inside a class so that it can be forward declared.
@@ skipping 870 matching lines @@
     // This notification is sent whenever the web database service has finished
     // loading the web database.  No details are expected.
     WEB_DATABASE_LOADED,
 
     // Purge Memory ------------------------------------------------------------
 
     // Sent on the IO thread when the system should try to reduce the amount of
     // memory in use, no source or details are passed. See memory_purger.h .cc.
     PURGE_MEMORY,
 
+    // Upgrade notifications ---------------------------------------------------
+
+    // Sent when Chrome detects that it has been upgraded behind the scenes.
+    // NOTE: The detection mechanism is asynchronous, so this event may arrive
+    // quite some time after the upgrade actually happened. No details are
+    // expected.
+    UPGRADE_DETECTED,
+
+    // Sent when Chrome believes an update has been installed and available for
+    // long enough with the user shutting down to let it take effect. See
+    // upgrade_detector.cc for details on how long it waits. No details are
+    // expected.
+    UPGRADE_RECOMMENDED,
+
     // Accessibility Notifications ---------------------------------------------
 
     // Notification that a window in the browser UI (not the web content)
     // was opened, for propagating to an accessibility extension.
     // Details will be an AccessibilityWindowInfo.
     ACCESSIBILITY_WINDOW_OPENED,
 
     // Notification that a window in the browser UI was closed.
     // Details will be an AccessibilityWindowInfo.
     ACCESSIBILITY_WINDOW_CLOSED,
@@ skipping 104 matching lines @@
 };
 
 inline bool operator==(NotificationType::Type a, NotificationType b) {
   return a == b.value;
 }
 inline bool operator!=(NotificationType::Type a, NotificationType b) {
   return a != b.value;
 }
 
 #endif  // CHROME_COMMON_NOTIFICATION_TYPE_H_