Limit QUIC's send algorithm max CWND by the peer's receive buffer and

net/quic/quic_flags.cc

Index: net/quic/quic_flags.cc
diff --git a/net/quic/quic_flags.cc b/net/quic/quic_flags.cc
index 9f64f60c747de7ad72d8e0906bcbe073d41f19c3..91b8f0379294dedbc7f827ab1cd28450c382df7f 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -52,3 +52,7 @@ bool FLAGS_quic_small_default_packet_size = true;
 
 // Do not retransmit data for streams that have been reset.
 bool FLAGS_quic_do_not_retransmit_for_reset_streams = true;
+
+// If true, use the peer's receive buffer size to set the max CWND used by the
+// send algorithms.
+bool FLAGS_quic_limit_max_cwnd_to_receive_buffer = true;