Do not use testing::EqualsProto in quic_crypto_server_config_test.cc, since it's not available in Chromium.

gfe-relnote: (n/a) Cosmetic test change.

(This CL partially reverts cl/240628307)

PiperOrigin-RevId: 240975844
Change-Id: I78a1c1e28fa0d1d28ecf02d62bfb64f58b3e451f

quic/core/crypto/quic_crypto_server_config_test.cc

diff --git a/quic/core/crypto/quic_crypto_server_config_test.cc b/quic/core/crypto/quic_crypto_server_config_test.cc
index 2de5b7a..b3f8f77 100644
--- a/quic/core/crypto/quic_crypto_server_config_test.cc
+++ b/quic/core/crypto/quic_crypto_server_config_test.cc
@@ -9,7 +9,6 @@
 #include <memory>
 #include <string>
 
-#include "testing/gmock/include/gmock/gmock.h"
 #include "net/third_party/quiche/src/quic/core/crypto/cert_compressor.h"
 #include "net/third_party/quiche/src/quic/core/crypto/chacha20_poly1305_encrypter.h"
 #include "net/third_party/quiche/src/quic/core/crypto/crypto_handshake_message.h"
@@ -26,9 +25,18 @@
 
 namespace quic {
 namespace test {
-using ::testing::EqualsProto;
 using ::testing::Not;
 
+// NOTE: This matcher depends on the wire format of serialzied protocol buffers,
+// which may change in the future.
+// Switch to ::testing::EqualsProto once it is available in Chromium.
+MATCHER_P(SerializedProtoEquals, message, "") {
+  std::string expected_serialized, actual_serialized;
+  message.SerializeToString(&expected_serialized);
+  arg.SerializeToString(&actual_serialized);
+  return expected_serialized == actual_serialized;
+}
+
 class QuicCryptoServerConfigTest : public QuicTest {};
 
 TEST_F(QuicCryptoServerConfigTest, ServerConfig) {
@@ -263,11 +271,11 @@
 
   CachedNetworkParameters cached_network_params_output;
   EXPECT_THAT(cached_network_params_output,
-              Not(EqualsProto(cached_network_params_input)));
+              Not(SerializedProtoEquals(cached_network_params_input)));
   ValidateSourceAddressTokens(kPrimary, token4_with_cached_network_params, ip4_,
                               &cached_network_params_output);
   EXPECT_THAT(cached_network_params_output,
-              EqualsProto(cached_network_params_input));
+              SerializedProtoEquals(cached_network_params_input));
 }
 
 // Test the ability for a source address token to be valid for multiple