Add path validation error expectations for PKITS tests.

net/cert/internal/verify_certificate_chain_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/cert/internal/verify_certificate_chain.h"
 
 #include "net/cert/internal/signature_policy.h"
+#include "net/cert/internal/test_helpers.h"
 #include "net/cert/internal/trust_store.h"
 #include "net/cert/internal/verify_certificate_chain_typed_unittest.h"
 
 namespace net {
 
 namespace {
 
 class VerifyCertificateChainDelegate {
  public:
   static void Verify(const VerifyCertChainTest& test,
                      const std::string& test_file_path) {
     SimpleSignaturePolicy signature_policy(1024);
 
     CertPathErrors errors;
     // TODO(eroman): Check user_constrained_policy_set.
     VerifyCertificateChain(
         test.chain, test.last_cert_trust, &signature_policy, test.time,
         test.key_purpose, test.initial_explicit_policy,
         test.user_initial_policy_set, test.initial_policy_mapping_inhibit,
         test.initial_any_policy_inhibit,
         nullptr /*user_constrained_policy_set*/, &errors);
-    EXPECT_EQ(test.expected_errors, errors.ToDebugString(test.chain))
-        << "Test file: " << test_file_path;
+    VerifyCertPathErrors(test.expected_errors, errors, test.chain,
+                         test_file_path);
   }
 };
 
 }  // namespace
 
 INSTANTIATE_TYPED_TEST_CASE_P(VerifyCertificateChain,
                               VerifyCertificateChainSingleRootTest,
                               VerifyCertificateChainDelegate);
 
 }  // namespace net