Add initial CertVerifyProcBuiltin.

net/cert/internal/verify_certificate_chain.h

 // 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.
 
 #ifndef NET_CERT_INTERNAL_VERIFY_CERTIFICATE_CHAIN_H_
 #define NET_CERT_INTERNAL_VERIFY_CERTIFICATE_CHAIN_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 56 matching lines @@
 //     validating the path are appended to this structure. There is no
 //     guarantee that on success |errors| is empty, or conversely that
 //     on failure |errors| is non-empty. Consumers must only use the
 //     boolean return value to determine success/failure.
 NET_EXPORT bool VerifyCertificateChain(const ParsedCertificateList& certs,
                                        const TrustAnchor* trust_anchor,
                                        const SignaturePolicy* signature_policy,
                                        const der::GeneralizedTime& time,
                                        CertErrors* errors) WARN_UNUSED_RESULT;
 
+// TODO(crbug.com/634443): Move exported errors to a central location?
+extern CertErrorId kValidityFailedNotAfter;
+extern CertErrorId kValidityFailedNotBefore;
+
 }  // namespace net
 
 #endif  // NET_CERT_INTERNAL_VERIFY_CERTIFICATE_CHAIN_H_