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// Copyright 2020 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_COMMON_ACTIVATION_SEQUENCE_H_
#define EXTENSIONS_COMMON_ACTIVATION_SEQUENCE_H_
#include "base/types/strong_alias.h"
namespace extensions {
// Unique identifier for an extension's activation->deactivation span.
//
// Applies to Service Worker based extensions. This is used to detect if a
// PendingTask for an extension expired at the time of executing the task, due
// to extension activation after deactivation.
using ActivationSequence =
::base::StrongAlias<class ActivationSequenceTag, int>;
} // namespace extensions
#endif // EXTENSIONS_COMMON_ACTIVATION_SEQUENCE_H_
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