Deprecate --gfe2_reloadable_flag_quic_distinguish_incoming_outgoing_streams.

net/quic/quic_session.cc

Index: net/quic/quic_session.cc
diff --git a/net/quic/quic_session.cc b/net/quic/quic_session.cc
index 8a9b92a21cf89ce0e1fca275fd6825f823b14b20..d8ec06c2f21273da9eb764c6eb96fba5fbcd0169 100644
--- a/net/quic/quic_session.cc
+++ b/net/quic/quic_session.cc
@@ -675,12 +675,7 @@ ReliableQuicStream* QuicSession::GetOrCreateDynamicStream(
   }
   // Check if the new number of open streams would cause the number of
   // open streams to exceed the limit.
-  size_t num_open_incoming_streams =
-      FLAGS_quic_distinguish_incoming_outgoing_streams
-          ? GetNumOpenIncomingStreams()
-          : dynamic_stream_map_.size() - draining_streams_.size() +
-                locally_closed_streams_highest_offset_.size();
-  if (num_open_incoming_streams >= max_open_incoming_streams()) {
+  if (GetNumOpenIncomingStreams() >= max_open_incoming_streams()) {
     if (connection()->version() <= QUIC_VERSION_27) {
       connection()->SendConnectionCloseWithDetails(
           QUIC_TOO_MANY_OPEN_STREAMS, "Old style stream rejection");