extensions/browser/extension_registry_observer.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_EXTENSION_REGISTRY_OBSERVER_H_
   6 #define EXTENSIONS_BROWSER_EXTENSION_REGISTRY_OBSERVER_H_
   7
   8 namespace extensions {
   9
  10 class Extension;
  11
  12 // Observer for ExtensionRegistry. Exists in a separate header file to reduce
  13 // the include file burden for typical clients of ExtensionRegistry.
  14 class ExtensionRegistryObserver {
  15  public:
  16   virtual ~ExtensionRegistryObserver() {}
  17
  18   // Called after an extension is unloaded. The extension no longer exists in
  19   // any of the ExtensionRegistry sets (enabled, disabled, etc.).
  20   virtual void OnExtensionUnloaded(const Extension* extension) {}
  21 };
  22
  23 }
  24
  25 #endif  // EXTENSIONS_BROWSER_EXTENSION_REGISTRY_OBSERVER_H_