Move the logic from SendAlgorithmInterface::RetransmissionDelay() into QuicSentPacketManager, becau…

net/quic/core/congestion_control/tcp_cubic_sender_base.cc

Index: net/quic/core/congestion_control/tcp_cubic_sender_base.cc
diff --git a/net/quic/core/congestion_control/tcp_cubic_sender_base.cc b/net/quic/core/congestion_control/tcp_cubic_sender_base.cc
index a94b662d8fd2c6cc2059a88eef11ebf308a93889..7a3641e115916c88a468f16652230b4c03138f3c 100644
--- a/net/quic/core/congestion_control/tcp_cubic_sender_base.cc
+++ b/net/quic/core/congestion_control/tcp_cubic_sender_base.cc
@@ -238,13 +238,6 @@ QuicBandwidth TcpCubicSenderBase::BandwidthEstimate() const {
   return QuicBandwidth::FromBytesAndTimeDelta(GetCongestionWindow(), srtt);
 }
 
-QuicTime::Delta TcpCubicSenderBase::RetransmissionDelay() const {
-  if (rtt_stats_->smoothed_rtt().IsZero()) {
-    return QuicTime::Delta::Zero();
-  }
-  return rtt_stats_->smoothed_rtt() + 4 * rtt_stats_->mean_deviation();
-}
-
 bool TcpCubicSenderBase::InSlowStart() const {
   return GetCongestionWindow() < GetSlowStartThreshold();
 }