These LOG(INFO)s claimed 8-9% of time under a load test.

net/quic/quic_unacked_packet_map.cc

Index: net/quic/quic_unacked_packet_map.cc
diff --git a/net/quic/quic_unacked_packet_map.cc b/net/quic/quic_unacked_packet_map.cc
index a9e2d1ba3137efce4774d18c4e615ad67df25aa2..bcafa5635c2c2dedf6e880691fe39d6480fc0d32 100644
--- a/net/quic/quic_unacked_packet_map.cc
+++ b/net/quic/quic_unacked_packet_map.cc
@@ -156,7 +156,6 @@ void QuicUnackedPacketMap::NackPacket(QuicPacketSequenceNumber sequence_number,
 
 void QuicUnackedPacketMap::RemovePacket(
     QuicPacketSequenceNumber sequence_number) {
-  DVLOG(1) << __FUNCTION__ << " " << sequence_number;
   UnackedPacketMap::iterator it = unacked_packets_.find(sequence_number);
   if (it == unacked_packets_.end()) {
     LOG(DFATAL) << "packet is not unacked: " << sequence_number;
@@ -175,8 +174,6 @@ void QuicUnackedPacketMap::RemovePacket(
 
 void QuicUnackedPacketMap::NeuterPacket(
     QuicPacketSequenceNumber sequence_number) {
-  DVLOG(1) << __FUNCTION__ << " " << sequence_number << " pending? "
-           << unacked_packets_[sequence_number].pending;
   UnackedPacketMap::iterator it = unacked_packets_.find(sequence_number);
   if (it == unacked_packets_.end()) {
     LOG(DFATAL) << "packet is not unacked: " << sequence_number;