Eliminate NOTIFICATION_HISTORY_LOADED notification

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"
 
 #if defined(ENABLE_EXTENSIONS)
@@ skipping 212 matching lines @@
 
   // This is sent when an authentication request has been dismissed without
   // supplying credentials (either by the user or by an automation service).
   // The source is the Source<NavigationController> for the tab in which the
   // prompt was shown. Details are a LoginNotificationDetails which provide
   // the LoginHandler that should be cancelled.
   NOTIFICATION_AUTH_CANCELLED,
 
   // History -----------------------------------------------------------------
 
-  // Sent when a history service has finished loading. The source is the
-  // profile that the history service belongs to, and the details is the
-  // HistoryService.
-  NOTIFICATION_HISTORY_LOADED,
-
   // Sent when a URL has been added or modified. This is used by the in-memory
   // URL database and the InMemoryURLIndex (both used by autocomplete) to track
   // changes to the main history system.
   //
   // The source is the profile owning the history service that changed, and
   // the details is history::URLsModifiedDetails that lists the modified or
   // added URLs.
   NOTIFICATION_HISTORY_URLS_MODIFIED,
 
   // Sent when one or more URLs are deleted.
@@ skipping 429 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_