retention_time_    43 chrome/browser/extensions/activity_log/counting_policy.h   const base::TimeDelta& retention_time() const { return retention_time_; }
retention_time_    45 chrome/browser/extensions/activity_log/counting_policy.h     retention_time_ = delta;
retention_time_   142 chrome/browser/extensions/activity_log/counting_policy.h   base::TimeDelta retention_time_;