message: Use the new Google Mock MOCK_METHOD macro instead of the older MOCK_METHOD<n> macros.
diff: @@ -70,14 +70,14 @@ class ExamplePrivateKeyTypeManager
  return google::crypto::tink::KeyData::ASYMMETRIC_PRIVATE;
  }
  - MOCK_CONST_METHOD0(get_version, uint32_t());
  + MOCK_METHOD(uint32_t, get_version, (), (const, override));
  // We mock out ValidateKey and ValidateKeyFormat so that we can easily test
  // proper behavior in case they return an error.
  - MOCK_CONST_METHOD1(ValidateKey,
  - crypto::tink::util::Status(const EcdsaPrivateKey& key));
  - MOCK_CONST_METHOD1(ValidateKeyFormat,
  - crypto::tink::util::Status(const EcdsaKeyFormat& key));
  + MOCK_METHOD(crypto::tink::util::Status, ValidateKey,
  + (const EcdsaPrivateKey& key), (const, override));
  + MOCK_METHOD(crypto::tink::util::Status, ValidateKeyFormat,
  + (const EcdsaKeyFormat& key), (const, override));
  const std::string& get_key_type() const override { return kKeyType; }
  @@ -119,12 +119,12 @@ class TestPublicKeyTypeManager
  return google::crypto::tink::KeyData::ASYMMETRIC_PRIVATE;
  }
  - MOCK_CONST_METHOD0(get_version, uint32_t());
  + MOCK_METHOD(uint32_t, get_version, (), (const, override));
  // We mock out ValidateKey and ValidateKeyFormat so that we can easily test
  // proper behavior in case they return an error.
  - MOCK_CONST_METHOD1(ValidateKey,
  - crypto::tink::util::Status(const EcdsaPublicKey& key));
  + MOCK_METHOD(crypto::tink::util::Status, ValidateKey,
  + (const EcdsaPublicKey& key), (const, override));
  const std::string& get_key_type() const override { return kKeyType; }
  