Update from https://crrev.com/311076

net/quic/quic_stream_factory.h

Index: net/quic/quic_stream_factory.h
diff --git a/net/quic/quic_stream_factory.h b/net/quic/quic_stream_factory.h
index b8623099e4b6f7fb85d317957ed12bf6b8d1dd40..ed5a93074af2cac24bc92bb2a0237568521417f5 100644
--- a/net/quic/quic_stream_factory.h
+++ b/net/quic/quic_stream_factory.h
@@ -107,6 +107,7 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
       int load_server_info_timeout,
       bool disable_loading_server_info_for_new_servers,
       float load_server_info_timeout_srtt_multiplier,
+      bool enable_truncated_connection_ids,
       const QuicTagVector& connection_options);
   ~QuicStreamFactory() override;
 
@@ -307,6 +308,9 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
   // want to timeout, set |load_server_info_timeout_srtt_multiplier_| to 0.
   float load_server_info_timeout_srtt_multiplier_;
 
+  // Set this for setting config's BytesForConnectionIdToSend (TCID param) to 0.
+  bool enable_truncated_connection_ids_;
+
   // Each profile will (probably) have a unique port_seed_ value.  This value is
   // used to help seed a pseudo-random number generator (PortSuggester) so that
   // we consistently (within this profile) suggest the same ephemeral port when