Add a QUIC connection option to use a more conservative handshake retransmission timer. Protected …

net/quic/core/quic_sent_packet_manager.h

Index: net/quic/core/quic_sent_packet_manager.h
diff --git a/net/quic/core/quic_sent_packet_manager.h b/net/quic/core/quic_sent_packet_manager.h
index b442951f294c93cdc5e1bb1d857f24d1837c1f6e..8e6ec2d0c4d14f7f86e2fd1b07ddcf7d3fe79724 100644
--- a/net/quic/core/quic_sent_packet_manager.h
+++ b/net/quic/core/quic_sent_packet_manager.h
@@ -386,6 +386,8 @@ class NET_EXPORT_PRIVATE QuicSentPacketManager
   // If true, cancel pending retransmissions if they're larger than
   // largest_newly_acked.
   bool undo_pending_retransmits_;
+  // If true, use a more conservative handshake retransmission policy.
+  bool conservative_handshake_retransmits_;
 
   // Vectors packets acked and lost as a result of the last congestion event.
   SendAlgorithmInterface::CongestionVector packets_acked_;