text: // Copyright (c) 2021 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 UI_BASE_CLIPBOARD_CLIPBOARD_SEQUENCE_NUMBER_TOKEN_H_
  #define UI_BASE_CLIPBOARD_CLIPBOARD_SEQUENCE_NUMBER_TOKEN_H_
  
  #include "base/types/token_type.h"
  
  namespace ui {
  
  // Identifies a unique clipboard state. This can be used to version the data on
  // the clipboard and determine whether it has changed.
  using ClipboardSequenceNumberToken =
      base::TokenType<class ClipboardSequenceNumberTokenTypeMarker>;
  
  }  // namespace ui
  
  #endif  // UI_BASE_CLIPBOARD_CLIPBOARD_SEQUENCE_NUMBER_TOKEN_H_
  