relnote: Use NotifyChangedPriority when updating alarms instead of canceling and reregistering. Gua…

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 f9f0c430ca066d6d9c50b4d9e9804a0887fa57df..d7a3f3a93d791cecca5a79333ffe4ab160847b00 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -155,3 +155,7 @@ bool FLAGS_enable_async_get_proof = false;
 // If true, neuter null encrypted packets before sending the next handshake
 // message.
 bool FLAGS_quic_neuter_unencrypted_when_sending = false;
+
+// If true, QuicAlarm::Update will call a faster UpdateImpl implementation
+// instead of canceling and reregistering the alarm.
+bool FLAGS_quic_change_alarms_efficiently = true;