deprecate FLAGS_graceful_emsgsize_on_mtu_probe

net/quic/core/quic_connection_test.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/core/quic_connection.h"
 
 #include <errno.h>
 #include <memory>
 #include <ostream>
 #include <utility>
@@ skipping 3167 matching lines @@
     SendStreamDataToPeer(3, ".", i, /*fin=*/false, nullptr);
     ASSERT_FALSE(connection_.GetMtuDiscoveryAlarm()->IsSet());
   }
 
   EXPECT_EQ(1u, connection_.mtu_probe_count());
 }
 
 // Tests whether MTU discovery works when the writer returns an error despite
 // advertising higher packet length.
 TEST_P(QuicConnectionTest, MtuDiscoveryWriterFailed) {
-  FLAGS_graceful_emsgsize_on_mtu_probe = true;
   EXPECT_TRUE(connection_.connected());
 
   const QuicByteCount mtu_limit = kMtuDiscoveryTargetPacketSizeHigh - 1;
   const QuicByteCount initial_mtu = connection_.max_packet_length();
   EXPECT_LT(initial_mtu, mtu_limit);
   writer_->set_max_packet_size(mtu_limit);
   connection_.EnablePathMtuDiscovery(send_algorithm_);
 
   // Send enough packets so that the next one triggers path MTU discovery.
   for (QuicPacketCount i = 0; i < kPacketsBetweenMtuProbesBase - 1; i++) {
@@ skipping 2080 matching lines @@
   connection_.SendStreamDataWithString(3, "foo", 0, !kFin, nullptr);
   EXPECT_EQ(1u, writer_->frame_count());
   EXPECT_FALSE(writer_->connection_close_frames().empty());
   // Ack frame is not bundled in connection close packet.
   EXPECT_TRUE(writer_->ack_frames().empty());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net