Remove redundant |is_server| argument from TestSession and call the

net/quic/test_tools/crypto_test_utils.cc

Index: net/quic/test_tools/crypto_test_utils.cc
diff --git a/net/quic/test_tools/crypto_test_utils.cc b/net/quic/test_tools/crypto_test_utils.cc
index 97aa5c73ccc7643456fcd43b9cdc4ce850a8bece..a6b6cc1ed8551d2b05c07a7609d7e0685ecd3fa3 100644
--- a/net/quic/test_tools/crypto_test_utils.cc
+++ b/net/quic/test_tools/crypto_test_utils.cc
@@ -134,7 +134,7 @@ int CryptoTestUtils::HandshakeWithFakeServer(
     PacketSavingConnection* client_conn,
     QuicCryptoClientStream* client) {
   PacketSavingConnection* server_conn = new PacketSavingConnection(true);
-  TestSession server_session(server_conn, DefaultQuicConfig(), true);
+  TestSession server_session(server_conn, DefaultQuicConfig());
 
   QuicCryptoServerConfig crypto_config(QuicCryptoServerConfig::TESTING,
                                        QuicRandom::GetInstance());
@@ -162,7 +162,7 @@ int CryptoTestUtils::HandshakeWithFakeClient(
     QuicCryptoServerStream* server,
     const FakeClientOptions& options) {
   PacketSavingConnection* client_conn = new PacketSavingConnection(false);
-  TestSession client_session(client_conn, DefaultQuicConfig(), false);
+  TestSession client_session(client_conn, DefaultQuicConfig());
   QuicCryptoClientConfig crypto_config;
 
   client_session.config()->SetDefaults();