Test only change to QUIC TCPLossAlgorithmTest to ensure the early

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 8c6a74f9f228aac0aabf01b0ef839f5b6ca615ad..2540bc72d7196967f4d52f1f2cf1eb3e6ad3ac2e 100644
--- a/net/quic/congestion_control/tcp_loss_algorithm_test.cc
+++ b/net/quic/congestion_control/tcp_loss_algorithm_test.cc
@@ -129,21 +129,34 @@ TEST_F(TcpLossAlgorithmTest, EarlyRetransmitAllPackets) {
   const size_t kNumSentPackets = 5;
   for (size_t i = 1; i <= kNumSentPackets; ++i) {
     SendDataPacket(i);
+    // Advance the time 1/4 RTT between 3 and 4.
+    if (i == 3) {
+      clock_.AdvanceTime(srtt_.Multiply(0.25));
+    }
   }
-  // Early retransmit when the final packet gets acked and the first 4 are
-  // nacked multiple times via FACK.
+
+  // Early retransmit when the final packet gets acked and 1.25 RTTs have
+  // elapsed since the packets were sent.
   unacked_packets_.SetNotPending(kNumSentPackets);
+  // This simulates a single ack following multiple missing packets with FACK.
   for (size_t i = 1; i < kNumSentPackets; ++i) {
     unacked_packets_.NackPacket(i, kNumSentPackets - i);
   }
   QuicPacketSequenceNumber lost[] = { 1, 2 };
   VerifyLosses(kNumSentPackets, lost, arraysize(lost));
-  EXPECT_EQ(clock_.Now().Add(srtt_.Multiply(1.25)),
+  // The time has already advanced 1/4 an RTT, so ensure the timeout is set
+  // 1.25 RTTs after the earliest pending packet(3), not the last(4).
+  EXPECT_EQ(clock_.Now().Add(srtt_),
             loss_algorithm_.GetLossTimeout());
 
-  clock_.AdvanceTime(srtt_.Multiply(1.25));
-  QuicPacketSequenceNumber lost2[] = { 1, 2, 3, 4 };
+  clock_.AdvanceTime(srtt_);
+  QuicPacketSequenceNumber lost2[] = { 1, 2, 3 };
   VerifyLosses(kNumSentPackets, lost2, arraysize(lost2));
+  EXPECT_EQ(clock_.Now().Add(srtt_.Multiply(0.25)),
+            loss_algorithm_.GetLossTimeout());
+  clock_.AdvanceTime(srtt_.Multiply(0.25));
+  QuicPacketSequenceNumber lost3[] = { 1, 2, 3, 4 };
+  VerifyLosses(kNumSentPackets, lost3, arraysize(lost3));
   EXPECT_EQ(QuicTime::Zero(), loss_algorithm_.GetLossTimeout());
 }