Implement a QUIC No PRR connection option, NPRR. Protected by FLAGS_quic_allow_no_prr

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 095502656f364eefb070085414a2f6ae9e3691b5..5a486eb62ae5afb37fa6f1594040a0f2fb0b2575 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -142,3 +142,7 @@ bool FLAGS_quic_use_old_public_reset_packets = true;
 // Ignore the peer's recieve buffer size and instead set max CWND based on the
 // amount of data the sender is willing to have in flight.
 bool FLAGS_quic_ignore_srbf = true;
+
+// Allow the NPRR connection option which reduces QUIC\'s pacing rate during
+// recovery instead of PRR.
+bool FLAGS_quic_allow_noprr = true;