[m54 merge] Set QUIC connection's last_send_for_timeout_ to the send time of the first sent packet …

net/quic/core/quic_flags.cc

Index: net/quic/core/quic_flags.cc
diff --git a/net/quic/core/quic_flags.cc b/net/quic/core/quic_flags.cc
index 49b8c7a307e6df035d9fa7b4fe2abd0094f270d2..68c391dff7a4aa558e43c816e6f5b11c9a34642f 100644
--- a/net/quic/core/quic_flags.cc
+++ b/net/quic/core/quic_flags.cc
@@ -165,3 +165,8 @@ bool FLAGS_quic_simple_packet_number_length_2 = true;
 
 // If true, disables QUIC version less than 32.
 bool FLAGS_quic_disable_pre_32 = true;
+
+// If true, set a QUIC connection's last_sent_for_timeout_ to the send time of
+// the first packet sent after receiving a packet, even if the sent packet is
+// a retransmission
+bool FLAGS_quic_better_last_send_for_timeout = true;