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

net/tools/quic/end_to_end_test.cc

Index: net/tools/quic/end_to_end_test.cc
diff --git a/net/tools/quic/end_to_end_test.cc b/net/tools/quic/end_to_end_test.cc
index 1740eede05a9cda6b8a7f9218da3bd9e5d7d5623..0fccff9b12f3ea6e1cb869f7f366d01d277b223b 100644
--- a/net/tools/quic/end_to_end_test.cc
+++ b/net/tools/quic/end_to_end_test.cc
@@ -943,13 +943,11 @@ TEST_P(EndToEndTest, LimitMaxOpenStreams) {
   EXPECT_EQ(2u, client_negotiated_config->max_streams_per_connection());
 }
 
-// TODO(rtenneti): DISABLED_LimitCongestionWindowAndRTT seems to be flaky.
-// http://crbug.com/321870.
-TEST_P(EndToEndTest, DISABLED_LimitCongestionWindowAndRTT) {
+TEST_P(EndToEndTest, LimitCongestionWindowAndRTT) {
   // Client tries to request twice the server's max initial window, and the
   // server limits it to the max.
   client_config_.SetInitialCongestionWindowToSend(2 * kMaxInitialWindow);
-  client_config_.SetInitialRoundTripTimeUsToSend(1);
+  client_config_.SetInitialRoundTripTimeUsToSend(1000);
 
   ASSERT_TRUE(Initialize());
   client_->client()->WaitForCryptoHandshakeConfirmed();
@@ -974,9 +972,9 @@ TEST_P(EndToEndTest, DISABLED_LimitCongestionWindowAndRTT) {
   EXPECT_EQ(GetParam().use_pacing, server_sent_packet_manager.using_pacing());
   EXPECT_EQ(GetParam().use_pacing, client_sent_packet_manager.using_pacing());
 
-  EXPECT_EQ(100000u,
-            client_sent_packet_manager.GetRttStats()->initial_rtt_us());
-  EXPECT_EQ(1u, server_sent_packet_manager.GetRttStats()->initial_rtt_us());
+  // The client *should* set the intitial RTT.
+  EXPECT_EQ(1000u, client_sent_packet_manager.GetRttStats()->initial_rtt_us());
+  EXPECT_EQ(1000u, server_sent_packet_manager.GetRttStats()->initial_rtt_us());
 
   // Now use the negotiated limits with packet loss.
   SetPacketLossPercentage(30);