Remove TCP and BBR's max congestion window. No practical change,

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 be665d2228ef683a47326fe90a8249d33ffb5466..c2b6fec8fbc095ee807e5b79ff4169c727816cf3 100644
--- a/net/quic/quic_unacked_packet_map.cc
+++ b/net/quic/quic_unacked_packet_map.cc
@@ -13,6 +13,14 @@ using std::max;
 
 namespace net {
 
+namespace {
+
+// Maximum amount of reordering before packets are considered useless for
+// RTT measurement purposes.
+const QuicPacketCount kMaxReorderingForRtt = 200;
+
+}  // anonymous namespace
+
 QuicUnackedPacketMap::QuicUnackedPacketMap()
     : largest_sent_packet_(0),
       largest_observed_(0),
@@ -273,7 +281,7 @@ bool QuicUnackedPacketMap::IsPacketRemovable(
     QuicPacketSequenceNumber sequence_number,
     const TransmissionInfo& info) const {
   return (!IsPacketUsefulForMeasuringRtt(sequence_number, info) ||
-          unacked_packets_.size() > kMaxTcpCongestionWindow) &&
+          unacked_packets_.size() > kMaxReorderingForRtt) &&
          !IsPacketUsefulForCongestionControl(info) &&
          !IsPacketUsefulForRetransmittableData(info);
 }