Attemp 2 at:

chrome/browser/view_ids.h

 // 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.
 
 // This defines an enumeration of IDs that can uniquely identify a view within
 // the scope of a container view.
 
 #ifndef CHROME_BROWSER_VIEW_IDS_H_
 #define CHROME_BROWSER_VIEW_IDS_H_
 
@@ skipping 12 matching lines @@
   VIEW_ID_TAB_5,
   VIEW_ID_TAB_6,
   VIEW_ID_TAB_7,
   VIEW_ID_TAB_8,
   VIEW_ID_TAB_9,
   VIEW_ID_TAB_LAST,
 
   // ID for any tab. Currently only used on views.
   VIEW_ID_TAB,
 
-  VIEW_ID_EXTENSION_APP_ICON,
-  VIEW_ID_EXTENSION_APP_TITLE,
   VIEW_ID_TAB_STRIP,
 
   // Toolbar & toolbar elements.
   VIEW_ID_TOOLBAR = 1000,
   VIEW_ID_BACK_BUTTON,
   VIEW_ID_FORWARD_BUTTON,
   VIEW_ID_RELOAD_BUTTON,
   VIEW_ID_HOME_BUTTON,
   VIEW_ID_STAR_BUTTON,
   VIEW_ID_LOCATION_BAR,
@@ skipping 29 matching lines @@
 
   // The Download shelf.
   VIEW_ID_DOWNLOAD_SHELF,
 
   // Used in chrome/browser/gtk/view_id_util_browsertests.cc
   // If you add new ids, make sure the above test passes.
   VIEW_ID_PREDEFINED_COUNT
 };
 
 #endif  // CHROME_BROWSER_VIEW_IDS_H_