#ifndef COMPONENTS_UNDO_BOOKMARK_UNDO_SERVICE_H_
#define COMPONENTS_UNDO_BOOKMARK_UNDO_SERVICE_H_
#include <map>
#include "base/scoped_observation.h"
#include "components/bookmarks/browser/base_bookmark_model_observer.h"
#include "components/bookmarks/browser/bookmark_model.h"
#include "components/bookmarks/browser/bookmark_node_data.h"
#include "components/keyed_service/core/keyed_service.h"
#include "components/undo/undo_manager.h"
class BookmarkUndoService : public bookmarks::BaseBookmarkModelObserver,
public KeyedService { … };
#endif