Moving notification types which are chrome specific to a new header file chrome_notification_type...

chrome/browser/history/history_tab_helper.h

 // Copyright (c) 2011 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_HISTORY_HISTORY_TAB_HELPER_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_
 #pragma once
 
 #include "content/browser/tab_contents/tab_contents_observer.h"
 #include "content/common/notification_observer.h"
@@ skipping 33 matching lines @@
   // TabContentsObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message);
   virtual void DidNavigateMainFramePostCommit(
       const content::LoadCommittedDetails& details,
       const ViewHostMsg_FrameNavigate_Params& params);
   virtual void DidNavigateAnyFramePostCommit(
       const content::LoadCommittedDetails& details,
       const ViewHostMsg_FrameNavigate_Params& params);
 
   // NotificationObserver implementation.
-  virtual void Observe(NotificationType type,
+  virtual void Observe(int type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   void OnPageContents(const GURL& url,
                       int32 page_id,
                       const string16& contents);
   void OnThumbnail(const GURL& url,
                    const ThumbnailScore& score,
                    const SkBitmap& bitmap);
 
   // Helper function to return the history service.  May return NULL.
   HistoryService* GetHistoryService();
 
   // Whether we have a (non-empty) title for the current page.
   // Used to prevent subsequent title updates from affecting history. This
   // prevents some weirdness because some AJAXy apps use titles for status
   // messages.
   bool received_page_title_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryTabHelper);
 };
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_