Add an IncreaseLargestObserved to QuicUnackedPacketMap to remove the rtt

net/quic/congestion_control/tcp_loss_algorithm_test.cc

Index: net/quic/congestion_control/tcp_loss_algorithm_test.cc
diff --git a/net/quic/congestion_control/tcp_loss_algorithm_test.cc b/net/quic/congestion_control/tcp_loss_algorithm_test.cc
index 38736d401a775555546a5d2ecda88adbf2b1ac28..f4e3d5ec3d7541d3ef05c9e7ee38bf32259b4f8d 100644
--- a/net/quic/congestion_control/tcp_loss_algorithm_test.cc
+++ b/net/quic/congestion_control/tcp_loss_algorithm_test.cc
@@ -168,10 +168,13 @@ TEST_F(TcpLossAlgorithmTest, DontEarlyRetransmitNeuteredPacket) {
   for (size_t i = 1; i <= kNumSentPackets; ++i) {
     SendDataPacket(i);
   }
+  // Neuter packet 1.
+  unacked_packets_.RemoveRetransmittability(1);
+
   // Early retransmit when the final packet gets acked and the first is nacked.
+  unacked_packets_.IncreaseLargestObserved(2);
   unacked_packets_.SetNotPending(2);
   unacked_packets_.NackPacket(1, 1);
-  unacked_packets_.RemoveRetransmittability(1, 1);
   VerifyLosses(2, NULL, 0);
   EXPECT_EQ(QuicTime::Zero(), loss_algorithm_.GetLossTimeout());
 }