Simplify QUIC stateless rejects by latching the value of FLAGS_enable_quic_stateless_reject_support…

net/tools/quic/quic_dispatcher.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/tools/quic/quic_dispatcher.h"
 
 #include <utility>
 
 #include "base/debug/stack_trace.h"
 #include "base/logging.h"
@@ skipping 274 matching lines @@
   }
 
   // Packet's connection ID is unknown.
   // Apply the validity checks.
   QuicPacketFate fate = ValidityChecks(header);
   switch (fate) {
     case kFateProcess: {
       // Create a session and process the packet.
       QuicServerSession* session =
           CreateQuicSession(connection_id, current_client_address_);
-      if (FLAGS_enable_quic_stateless_reject_support) {
-        session->set_use_stateless_rejects_if_peer_supported(true);
-      }
       DVLOG(1) << "Created new session for " << connection_id;
       session_map_.insert(std::make_pair(connection_id, session));
       session->connection()->ProcessUdpPacket(
           current_server_address_, current_client_address_, *current_packet_);
       break;
     }
     case kFateTimeWait:
       // Add this connection_id to the time-wait state, to safely reject
       // future packets.
       DVLOG(1) << "Adding connection ID " << connection_id
@@ skipping 179 matching lines @@
   // send it to the time wait manager in OnUnathenticatedHeader.
   return true;
 }
 
 void QuicDispatcher::SetLastError(QuicErrorCode error) {
   last_error_ = error;
 }
 
 }  // namespace tools
 }  // namespace net