Delete NOTIFICATION_EXTENSION_LOCATION_BAR_UPDATED, never Notify()d.

chrome/browser/chrome_notification_types.h

 // Copyright 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_BROWSER_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_BROWSER_CHROME_NOTIFICATION_TYPES_H_
 
 #include "build/build_config.h"
 #include "content/public/browser/notification_types.h"
 
@@ skipping 370 matching lines @@
 
   // Sent when a CrxInstaller finishes. Source is the CrxInstaller that
   // finished. The details are the extension which was installed.
   NOTIFICATION_CRX_INSTALLER_DONE,
 
   // Sent when the known installed extensions have all been loaded.  In
   // testing scenarios this can happen multiple times if extensions are
   // unloaded and reloaded. The source is a Profile.
   NOTIFICATION_EXTENSIONS_READY,
 
-  // Sent when an extension icon being displayed in the location bar is updated.
-  // The source is the Profile and the details are the WebContents for
-  // the tab.
-  NOTIFICATION_EXTENSION_LOCATION_BAR_UPDATED,
-
   // DEPRECATED: Use ExtensionRegistry::AddObserver instead.
   //
   // Sent when a new extension is loaded. The details are an Extension, and
   // the source is a Profile.
   NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
 
   // An error occured while attempting to load an extension. The details are a
   // string with details about why the load failed.
   NOTIFICATION_EXTENSION_LOAD_ERROR,
 
@@ skipping 526 matching lines @@
   // Note:-
   // 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_BROWSER_CHROME_NOTIFICATION_TYPES_H_