Add some more TODOs for places to instrument certificate errors.

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/trust_store.h"
 #include "net/cert/internal/verify_certificate_chain_typed_unittest.h"
 
@@ skipping 12 matching lines @@
     ASSERT_TRUE(trust_anchor);
 
     SimpleSignaturePolicy signature_policy(1024);
 
     CertErrors errors;
     bool result = VerifyCertificateChain(chain, trust_anchor.get(),
                                          &signature_policy, time, &errors);
     EXPECT_EQ(expected_result, result);
     EXPECT_EQ(expected_errors, errors.ToDebugString()) << "Test file: "
                                                        << test_file_path;
+    if (!result)
+      EXPECT_FALSE(errors.empty());
   }
 };
 
 }  // namespace
 
 INSTANTIATE_TYPED_TEST_CASE_P(VerifyCertificateChain,
                               VerifyCertificateChainSingleRootTest,
                               VerifyCertificateChainDelegate);
 
 }  // namespace net