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

net/quic/core/congestion_control/send_algorithm_interface.h

Index: net/quic/core/congestion_control/send_algorithm_interface.h
diff --git a/net/quic/core/congestion_control/send_algorithm_interface.h b/net/quic/core/congestion_control/send_algorithm_interface.h
index b9c1d4cbfd972982a061cc594ad84240b87bbec7..ad64afad7b8fa424cf017a49ab1cf86f2d766c68 100644
--- a/net/quic/core/congestion_control/send_algorithm_interface.h
+++ b/net/quic/core/congestion_control/send_algorithm_interface.h
@@ -88,11 +88,6 @@ class NET_EXPORT_PRIVATE SendAlgorithmInterface {
   // Returns 0 when it does not have an estimate.
   virtual QuicBandwidth BandwidthEstimate() const = 0;
 
-  // Get the send algorithm specific retransmission delay, called RTO in TCP,
-  // Note 1: the caller is responsible for sanity checking this value.
-  // Note 2: this will return zero if we don't have enough data for an estimate.
-  virtual QuicTime::Delta RetransmissionDelay() const = 0;
-
   // Returns the size of the current congestion window in bytes.  Note, this is
   // not the *available* window.  Some send algorithms may not use a congestion
   // window and will return 0.