Add QuicFlagSaver to files in net/tools/quic/

net/tools/quic/stateless_rejector_test.cc

 // Copyright 2016 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/stateless_rejector.h"
 
 #include <memory>
 #include <vector>
 
 #include "net/quic/core/crypto/crypto_handshake_message.h"
@@ skipping 94 matching lines @@
     SourceAddressTokens previous_tokens;
     IPAddress ip = net::test::Loopback4();
     MockRandom rand;
     string stk = config_peer_.NewSourceAddressToken(
         config_peer_.GetPrimaryConfig()->id, previous_tokens, ip, &rand,
         clock_.WallNow(), nullptr);
     stk_hex_ = "#" + QuicUtils::HexEncode(stk);
   }
 
  protected:
+  QuicFlagSaver flags_;  // Save/restore all QUIC flag values.
   std::unique_ptr<ProofSource> proof_source_;
   MockClock clock_;
   QuicCryptoServerConfig config_;
   QuicCryptoServerConfigPeer config_peer_;
   QuicCompressedCertsCache compressed_certs_cache_;
   QuicCryptoServerConfig::ConfigOptions config_options_;
   StatelessRejector rejector_;
 
   // Values used in CHLO messages
   string scid_hex_;
@@ skipping 108 matching lines @@
   if (GetParam().flags != ENABLED || GetParam().version <= QUIC_VERSION_32) {
     EXPECT_EQ(StatelessRejector::UNSUPPORTED, rejector_.state());
     return;
   }
   EXPECT_EQ(StatelessRejector::ACCEPTED, rejector_.state());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net