#ifndef UI_MESSAGE_CENTER_MESSAGE_CENTER_STATS_COLLECTOR_H_
#define UI_MESSAGE_CENTER_MESSAGE_CENTER_STATS_COLLECTOR_H_
#include <set>
#include <string>
#include "base/memory/raw_ptr.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/message_center_observer.h"
#include "ui/message_center/message_center_types.h"
#include "ui/message_center/public/cpp/notifier_id.h"
namespace message_center {
class MessageCenter;
class MessageCenterStatsCollector : public MessageCenterObserver { … };
}
#endif