Extension Commands changed by the user now take effect immediately.

chrome/common/chrome_notification_types.h

 // Copyright (c) 2012 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_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #pragma once
 
 #include "content/public/browser/notification_types.h"
 
@@ skipping 537 matching lines @@
   NOTIFICATION_EXTENSION_PAGE_ACTION_COUNT_CHANGED,
 
   // Sent when a browser action's visibility has changed. The source is the
   // ExtensionPrefs* that changed. The details are a Extension*.
   NOTIFICATION_EXTENSION_BROWSER_ACTION_VISIBILITY_CHANGED,
 
   // Sent when a page action's visibility has changed. The source is the
   // ExtensionAction* that changed. The details are a WebContents*.
   NOTIFICATION_EXTENSION_PAGE_ACTION_VISIBILITY_CHANGED,
 
+  // Sent when an extension command has been removed. The source is the profile
+  // and the details is a std::pair of two std::string objects (an extension ID
+  // and the name of the command being removed).
+  NOTIFICATION_EXTENSION_COMMAND_REMOVED,
+
+  // Sent when an extension command has been added. The source is the profile
+  // and the details is a std::pair of two std::string objects (an extension ID
+  // and the name of the command being added).
+  NOTIFICATION_EXTENSION_COMMAND_ADDED,
+
   // A new extension RenderViewHost has been registered. The details are
   // the RenderViewHost*.
   NOTIFICATION_EXTENSION_VIEW_REGISTERED,
 
   // An extension RenderViewHost has been unregistered. The details are
   // the RenderViewHost*.
   NOTIFICATION_EXTENSION_VIEW_UNREGISTERED,
 
   // Sent by an extension to notify the browser about the results of a unit
   // test.
@@ skipping 605 matching lines @@
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
 
 #endif  // CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_