Remove a QUIC test only flag(limit_rto_increase_for_tests) to limit the

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 685279bea30aa59bdee7991cbbe96b7d41892c66..189638c8ea8e7d091133a1d35ddf9f9543ef39b6 100644
--- a/net/quic/quic_sent_packet_manager_test.cc
+++ b/net/quic/quic_sent_packet_manager_test.cc
@@ -1060,29 +1060,6 @@ TEST_F(QuicSentPacketManagerTest, GetTransmissionDelay) {
   }
 }
 
-TEST_F(QuicSentPacketManagerTest, GetTestTransmissionDelayTailDrop) {
-  FLAGS_limit_rto_increase_for_tests = true;
-
-  SendDataPacket(1);
-  QuicTime::Delta delay = QuicTime::Delta::FromMilliseconds(500);
-  EXPECT_CALL(*send_algorithm_, RetransmissionDelay())
-      .WillRepeatedly(Return(delay));
-
-  // No backoff for the first 5 retransmissions.
-  for (int i = 0; i < 5; ++i) {
-    EXPECT_EQ(delay,
-              QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_));
-    EXPECT_CALL(*send_algorithm_, OnPacketAbandoned(i + 1, _));
-    EXPECT_CALL(*send_algorithm_, OnRetransmissionTimeout());
-    manager_.OnRetransmissionTimeout();
-    RetransmitNextPacket(i + 2);
-  }
-
-  // Then backoff starts
-  EXPECT_EQ(delay.Add(delay),
-            QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_));
-}
-
 }  // namespace
 }  // namespace test
 }  // namespace net