client-only - Change QUIC clients to use the initial RTT estimate that

net/quic/quic_sent_packet_manager_test.cc

Index: net/quic/quic_sent_packet_manager_test.cc
diff --git a/net/quic/quic_sent_packet_manager_test.cc b/net/quic/quic_sent_packet_manager_test.cc
index 6b33f45661fc34c5bba6712b7d2c6e7d865aff20..98dfdef6af83430357a3b2a522ecc88b784df4f4 100644
--- a/net/quic/quic_sent_packet_manager_test.cc
+++ b/net/quic/quic_sent_packet_manager_test.cc
@@ -1450,6 +1450,23 @@ TEST_F(QuicSentPacketManagerTest, NegotiatePacingFromOptions) {
   EXPECT_TRUE(manager_.using_pacing());
 }
 
+TEST_F(QuicSentPacketManagerTest, UseInitialRoundTripTimeToSend) {
+  uint32 initial_rtt_us = 325000;
+  EXPECT_NE(initial_rtt_us,
+            manager_.GetRttStats()->SmoothedRtt().ToMicroseconds());
+
+  QuicConfig config;
+  config.SetInitialRoundTripTimeUsToSend(initial_rtt_us);
+  EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
+  EXPECT_CALL(*network_change_visitor_, OnCongestionWindowChange(_));
+  EXPECT_CALL(*send_algorithm_, GetCongestionWindow())
+      .WillOnce(Return(100 * kDefaultTCPMSS));
+  manager_.SetFromConfig(config);
+
+  EXPECT_EQ(initial_rtt_us,
+            manager_.GetRttStats()->SmoothedRtt().ToMicroseconds());
+}
+
 }  // namespace
 }  // namespace test
 }  // namespace net