Connect up IETF QUIC Max ACK Delay transport parameter

This CL sets the QuicSentPacketManager's ACK Delay from the
MAX ACK Delay transport parameter.

gfe-relnote: N/A done only if IETF QUIC enabled & negotiated.
PiperOrigin-RevId: 260502360
Change-Id: Idd8a9d0fe36e7ab0794aa7532d608489866248eb
diff --git a/quic/core/quic_sent_packet_manager.cc b/quic/core/quic_sent_packet_manager.cc
index 5762333..90771f8 100644
--- a/quic/core/quic_sent_packet_manager.cc
+++ b/quic/core/quic_sent_packet_manager.cc
@@ -243,6 +243,11 @@
   }
   send_algorithm_->SetFromConfig(config, perspective);
 
+  if (config.HasReceivedMaxAckDelayMs()) {
+    peer_max_ack_delay_ =
+        QuicTime::Delta::FromMilliseconds(config.ReceivedMaxAckDelayMs());
+  }
+
   if (network_change_visitor_ != nullptr) {
     network_change_visitor_->OnCongestionChange();
   }