Deprecate --quic_sslr_limit_reduction.

net/quic/congestion_control/tcp_cubic_sender_packets.cc

Index: net/quic/congestion_control/tcp_cubic_sender_packets.cc
diff --git a/net/quic/congestion_control/tcp_cubic_sender_packets.cc b/net/quic/congestion_control/tcp_cubic_sender_packets.cc
index 33960dff76abe0d4428ab14ddbe2d6c4799aaa41..0e35297e3f39d54d4278af3c17d8ce88f85704c8 100644
--- a/net/quic/congestion_control/tcp_cubic_sender_packets.cc
+++ b/net/quic/congestion_control/tcp_cubic_sender_packets.cc
@@ -125,8 +125,7 @@ void TcpCubicSenderPackets::OnPacketLost(QuicPacketNumber packet_number,
   // TODO(jri): Separate out all of slow start into a separate class.
   if (slow_start_large_reduction_ && InSlowStart()) {
     DCHECK_LT(1u, congestion_window_);
-    if (FLAGS_quic_sslr_limit_reduction &&
-        congestion_window_ >= 2 * initial_tcp_congestion_window_) {
+    if (congestion_window_ >= 2 * initial_tcp_congestion_window_) {
       min_slow_start_exit_window_ = congestion_window_ / 2;
     }
     congestion_window_ = congestion_window_ - 1;