message: A shard of cl/401238122. Replace the deprecated crypto::tink::util::Status::error_message() method with its absl-compatible version crypto::tink::util::Status::message(). Change test matchers accordingly.
  This CL is a part of Tink migration to using absl::Status{,Or}.
diff: @@ -112,7 +112,7 @@ TEST_F(PrfFromStatefulMacFactoryTest, ComputePrfUpdateFails) {
  std::string("mock_stateful_mac"));
  auto output_result = prf()->Compute("test_input", 5);
  EXPECT_FALSE(output_result.ok());
  - EXPECT_THAT(output_result.status().error_message(), StrEq("UpdateFailed"));
  + EXPECT_THAT(output_result.status().message(), Eq("UpdateFailed"));
  }
  TEST_F(PrfFromStatefulMacFactoryTest, ComputePrfFinalizeFails) {
  @@ -120,7 +120,7 @@ TEST_F(PrfFromStatefulMacFactoryTest, ComputePrfFinalizeFails) {
  util::Status(util::error::INTERNAL, "FinalizeFailed"));
  auto output_result = prf()->Compute("test_input", 5);
  EXPECT_FALSE(output_result.ok());
  - EXPECT_THAT(output_result.status().error_message(), StrEq("FinalizeFailed"));
  + EXPECT_THAT(output_result.status().message(), Eq("FinalizeFailed"));
  }
  TEST_F(PrfFromStatefulMacFactoryTest, ComputePrfTooMuchOutputRequested) {
  