fix packet conservation to remove packets from recovery window when they are lost. Protected by FL…

net/quic/core/congestion_control/bbr_sender.h

Index: net/quic/core/congestion_control/bbr_sender.h
diff --git a/net/quic/core/congestion_control/bbr_sender.h b/net/quic/core/congestion_control/bbr_sender.h
index cc76f76ac71a4c1d60caf16a0f9b83efe5f6ff8e..31102b7d91f33483880b73bff1009d1cdfb2cf02 100644
--- a/net/quic/core/congestion_control/bbr_sender.h
+++ b/net/quic/core/congestion_control/bbr_sender.h
@@ -216,7 +216,8 @@ class QUIC_EXPORT_PRIVATE BbrSender : public SendAlgorithmInterface {
   void CalculateCongestionWindow(QuicByteCount bytes_acked);
   // Determines the approriate window that constrains the in-flight during
   // recovery.
-  void CalculateRecoveryWindow(QuicByteCount bytes_acked);
+  void CalculateRecoveryWindow(QuicByteCount bytes_acked,
+                               QuicByteCount bytes_lost);
 
   const RttStats* rtt_stats_;
   const QuicUnackedPacketMap* unacked_packets_;