Remove Mocking of QuicSession::OnZeroRttRejected() because the implementation is now available.

Test change only. not protected.

PiperOrigin-RevId: 314951260
Change-Id: I3d2ed2bcbfcf0758ee6549d2a79b4bec7bf87c1f

quic/core/tls_client_handshaker_test.cc

diff --git a/quic/core/tls_client_handshaker_test.cc b/quic/core/tls_client_handshaker_test.cc
index 81855ca..fe6fb08 100644
--- a/quic/core/tls_client_handshaker_test.cc
+++ b/quic/core/tls_client_handshaker_test.cc
@@ -387,10 +387,6 @@
   SSL_CTX_set_early_data_enabled(server_crypto_config_->ssl_ctx(), false);
   CreateConnection();
 
-  EXPECT_CALL(*session_, OnZeroRttRejected())
-      .WillOnce(testing::Invoke(
-          session_.get(), &TestQuicSpdyClientSession::ReallyOnZeroRttRejected));
-
   // 4 packets will be sent in this connection: initial handshake packet, 0-RTT
   // packet containing SETTINGS, handshake packet upon 0-RTT rejection, 0-RTT
   // packet retransmission.

quic/test_tools/quic_test_utils.h

diff --git a/quic/test_tools/quic_test_utils.h b/quic/test_tools/quic_test_utils.h
index 11bf3c6..39f052b 100644
--- a/quic/test_tools/quic_test_utils.h
+++ b/quic/test_tools/quic_test_utils.h
@@ -1143,9 +1143,6 @@
   MOCK_METHOD(bool, ShouldCreateOutgoingUnidirectionalStream, (), (override));
   MOCK_METHOD(std::vector<std::string>, GetAlpnsToOffer, (), (const, override));
   MOCK_METHOD(void, OnAlpnSelected, (quiche::QuicheStringPiece), (override));
-  MOCK_METHOD(void, OnZeroRttRejected, (), (override));
-
-  void ReallyOnZeroRttRejected() { QuicSession::OnZeroRttRejected(); }
 
   QuicCryptoClientStream* GetMutableCryptoStream() override;
   const QuicCryptoClientStream* GetCryptoStream() const override;