deprecate FLAGS_graceful_emsgsize_on_mtu_probe

net/quic/core/quic_connection_test.cc

Index: net/quic/core/quic_connection_test.cc
diff --git a/net/quic/core/quic_connection_test.cc b/net/quic/core/quic_connection_test.cc
index a0451903bd9ba73ef1ffaaad2a927493c3888cdf..a76bcf8c0f37de78c18840e60e17899081883a94 100644
--- a/net/quic/core/quic_connection_test.cc
+++ b/net/quic/core/quic_connection_test.cc
@@ -3185,7 +3185,6 @@ TEST_P(QuicConnectionTest, MtuDiscoveryWriterLimited) {
 // 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;