extensions/browser/extension_registry_observer.h

// Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_REGISTRY_OBSERVER_H_
#define EXTENSIONS_BROWSER_EXTENSION_REGISTRY_OBSERVER_H_

namespace extensions {

class Extension;

// Observer for ExtensionRegistry. Exists in a separate header file to reduce
// the include file burden for typical clients of ExtensionRegistry.
class ExtensionRegistryObserver {
 public:
  virtual ~ExtensionRegistryObserver() {}

  // Called after an extension is unloaded. The extension no longer exists in
  // any of the ExtensionRegistry sets (enabled, disabled, etc.).
  virtual void OnExtensionUnloaded(const Extension* extension) {}
};

}

#endif  // EXTENSIONS_BROWSER_EXTENSION_REGISTRY_OBSERVER_H_