DelayedAckTime    817 net/quic/quic_connection.cc       QuicTime::Delta delayed_ack_time = sent_packet_manager_.DelayedAckTime();
DelayedAckTime    687 net/quic/quic_sent_packet_manager.cc         srtt.Multiply(1.5).Add(DelayedAckTime()), srtt.Multiply(2));
DelayedAckTime    142 net/quic/quic_sent_packet_manager.h   const QuicTime::Delta DelayedAckTime() const;