| // Copyright 2014 The Chromium Authors | 
 | // Use of this source code is governed by a BSD-style license that can be | 
 | // found in the LICENSE file. | 
 |  | 
 | #ifndef EXTENSIONS_BROWSER_EXTENSION_SYSTEM_PROVIDER_H_ | 
 | #define EXTENSIONS_BROWSER_EXTENSION_SYSTEM_PROVIDER_H_ | 
 |  | 
 | #include "components/keyed_service/content/browser_context_keyed_service_factory.h" | 
 |  | 
 | class BrowserContextDependencyManager; | 
 |  | 
 | namespace content { | 
 | class BrowserContext; | 
 | } | 
 |  | 
 | namespace extensions { | 
 | class ExtensionSystem; | 
 |  | 
 | // An ExtensionSystemProvider maps a BrowserContext to its ExtensionSystem. | 
 | // Different applications may use this to provide differing implementations | 
 | // of ExtensionSystem. | 
 | // TODO(yoz): Rename to ChromeExtensionSystemFactory. | 
 | class ExtensionSystemProvider : public BrowserContextKeyedServiceFactory { | 
 |  public: | 
 |   ExtensionSystemProvider(const char* name, | 
 |                           BrowserContextDependencyManager* manager); | 
 |   ~ExtensionSystemProvider() override; | 
 |  | 
 |   virtual ExtensionSystem* GetForBrowserContext( | 
 |       content::BrowserContext* context) = 0; | 
 | }; | 
 |  | 
 | }  // namespace extensions | 
 |  | 
 | #endif  // EXTENSIONS_BROWSER_EXTENSION_SYSTEM_PROVIDER_H_ |