gfe-relnote: For better experimentation, add QUIC connection option ELDT to enable loss detection tuning. No behavior change, not protected.

Loss detection tuning is only enabled if ELDT is set and SetLossDetectionTuner is called. GFE does not call SetLossDetectionTuner, so it has no behavior change.

PiperOrigin-RevId: 305263247
Change-Id: If65144a52f4f483303877a6ffede37e4e2ea22b6

quic/core/quic_sent_packet_manager.cc

diff --git a/quic/core/quic_sent_packet_manager.cc b/quic/core/quic_sent_packet_manager.cc
index 22fe8cc..b5c15db 100644
--- a/quic/core/quic_sent_packet_manager.cc
+++ b/quic/core/quic_sent_packet_manager.cc
@@ -299,6 +299,7 @@
     conservative_handshake_retransmits_ = true;
   }
   send_algorithm_->SetFromConfig(config, perspective);
+  loss_algorithm_->SetFromConfig(config, perspective);
 
   if (network_change_visitor_ != nullptr) {
     network_change_visitor_->OnCongestionChange();