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// 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 COMPONENTS_BROWSER_CONTEXT_KEYED_SERVICE_BROWSER_CONTEXT_KEYED_SERVICE_H_
#define COMPONENTS_BROWSER_CONTEXT_KEYED_SERVICE_BROWSER_CONTEXT_KEYED_SERVICE_H_
class ProfileKeyedServiceFactory;
// Base class for all ProfileKeyedServices to allow for correct destruction
// order.
//
// Many services that hang off Profile have a two-pass shutdown. Many
// subsystems need a first pass shutdown phase where they drop references. Not
// all services will need this, so there's a default implementation. Only once
// every system has been given a chance to drop references do we start deleting
// objects.
class ProfileKeyedService {
public:
// The first pass is to call Shutdown on a ProfileKeyedService.
virtual void Shutdown() {}
protected:
friend class ProfileKeyedServiceFactory;
// The second pass is the actual deletion of each object.
virtual ~ProfileKeyedService() {}
};
#endif // COMPONENTS_BROWSER_CONTEXT_KEYED_SERVICE_BROWSER_CONTEXT_KEYED_SERVICE_H_
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