Update from chromium https://crrev.com/302282

net/quic/quic_session.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_session.h"
 
 #include "base/stl_util.h"
 #include "net/quic/crypto/proof_verifier.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_flags.h"
@@ skipping 738 matching lines @@
 
 bool QuicSession::GetSSLInfo(SSLInfo* ssl_info) const {
   NOTIMPLEMENTED();
   return false;
 }
 
 void QuicSession::PostProcessAfterData() {
   STLDeleteElements(&closed_streams_);
   closed_streams_.clear();
 
-  if (FLAGS_close_quic_connection_unfinished_streams_2 &&
-      connection()->connected() &&
+  if (connection()->connected() &&
       locally_closed_streams_highest_offset_.size() > max_open_streams_) {
     // A buggy client may fail to send FIN/RSTs. Don't tolerate this.
     connection_->SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS);
   }
 }
 
 void QuicSession::OnSuccessfulVersionNegotiation(const QuicVersion& version) {
   // Disable stream level flow control based on negotiated version. Streams may
   // have been created with a different version.
   if (version < QUIC_VERSION_21) {
@@ skipping 14 matching lines @@
   for (DataStreamMap::iterator it = stream_map_.begin();
        it != stream_map_.end(); ++it) {
     if (it->second->flow_controller()->IsBlocked()) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace net