Internal QUICHE change

PiperOrigin-RevId: 253074929
Change-Id: I7c0b265ae4ba000bec3b4ea6936a93bc92b73ddc
diff --git a/quic/core/congestion_control/bbr_sender.cc b/quic/core/congestion_control/bbr_sender.cc
index aa81d5a..c455751 100644
--- a/quic/core/congestion_control/bbr_sender.cc
+++ b/quic/core/congestion_control/bbr_sender.cc
@@ -109,7 +109,7 @@
       pacing_gain_(1),
       congestion_window_gain_(1),
       congestion_window_gain_constant_(
-          static_cast<float>(FLAGS_quic_bbr_cwnd_gain)),
+          static_cast<float>(GetQuicFlag(FLAGS_quic_bbr_cwnd_gain))),
       num_startup_rtts_(kRoundTripsWithoutGrowthBeforeExitingStartup),
       exit_startup_on_loss_(false),
       cycle_current_offset_(0),