Keep the toolbar overflow menu the same when removing a component action

chrome/browser/ui/toolbar/toolbar_actions_model.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_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
@@ skipping 255 matching lines @@
   void AddItem(const ToolbarItem& item);
 
   // Removes |item| from the toolbar.  If the toolbar is in highlighting mode,
   // the item is also removed from the highlighted list (if present).
   void RemoveItem(const ToolbarItem& item);
 
   // Looks up and returns the extension with the given |id| in the set of
   // enabled extensions.
   const extensions::Extension* GetExtensionById(const std::string& id) const;
 
+  // Returns true if the action is visible on the toolbar.
+  bool IsActionVisible(const std::string& action_id) const;
+
   // Our observers.
   base::ObserverList<Observer> observers_;
 
   // The Profile this toolbar model is for.
   Profile* profile_;
 
   extensions::ExtensionPrefs* extension_prefs_;
   PrefService* prefs_;
 
   // The ExtensionActionAPI object, cached for convenience.
@@ skipping 52 matching lines @@
   // For observing change of toolbar order preference by external entity (sync).
   PrefChangeRegistrar pref_change_registrar_;
   base::Closure pref_change_callback_;
 
   base::WeakPtrFactory<ToolbarActionsModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsModel);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_