Deprecate FLAGS_reset_cubic_epoch_when_app_limited.

net/quic/quic_flags.cc

Index: net/quic/quic_flags.cc
diff --git a/net/quic/quic_flags.cc b/net/quic/quic_flags.cc
index 73217980111ba3947ee19367fde804a53b8396e6..67519c0c34dd870547436b2afd1ca21f98f0a341 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -58,10 +58,6 @@ bool FLAGS_quic_require_handshake_confirmation = false;
 // client, a GO_AWAY frame is sent to the client.
 bool FLAGS_send_goaway_after_client_migration = true;
 
-// QUIC-specific flag. If true, Cubic's epoch is reset when the sender is
-// application-limited.
-bool FLAGS_reset_cubic_epoch_when_app_limited = true;
-
 // If true, use an interval set as the internal representation of a packet queue
 // instead of a set.
 bool FLAGS_quic_packet_queue_use_interval_set = true;