Extend contextMenus API to support browser/page actions

chrome/browser/extensions/menu_manager_factory.h

 // Copyright 2013 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_EXTENSIONS_MENU_MANAGER_FACTORY_H_
 #define CHROME_BROWSER_EXTENSIONS_MENU_MANAGER_FACTORY_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
 class Profile;
 
 namespace extensions {
 class MenuManager;
 
 class MenuManagerFactory : public BrowserContextKeyedServiceFactory {
  public:
   static MenuManager* GetForProfile(Profile* profile);
 
   static MenuManagerFactory* GetInstance();
 
+  static KeyedService* BuildInstanceFor(
+      content::BrowserContext* browser_context);
+
  private:
   friend struct DefaultSingletonTraits<MenuManagerFactory>;
 
   MenuManagerFactory();
   virtual ~MenuManagerFactory();
 
   virtual KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* profile) const OVERRIDE;
   virtual content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const OVERRIDE;
   virtual bool ServiceIsCreatedWithBrowserContext() const OVERRIDE;
   virtual bool ServiceIsNULLWhileTesting() const OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_MENU_MANAGER_FACTORY_H_