Deprecate FLAGS_quic_count_unfinished_as_open_streams.

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 0c9baedff3017e23bc4dd1dc28c56667acbcb862..02a40f1a4829f59c9de96adf694a19454206ffa6 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -100,11 +100,6 @@ bool FLAGS_quic_implement_stop_reading = true;
 // and AckNotifierManager.
 bool FLAGS_quic_no_ack_notifier = true;
 
-// If true, QuicSession::GetNumOpenStreams will count unfinished
-// streams as open streams, QuicSession::PostProcessAfterData will not
-// check the quota of unifinished streams.
-bool FLAGS_quic_count_unfinished_as_open_streams = true;
-
 // If true, use the unrolled prefetch path in QuicPacketCreator::CopyToBuffer.
 bool FLAGS_quic_packet_creator_prefetch = false;