Enable passing cast channel certificate authority keys.

net/cert/x509_certificate.h

 // Copyright (c) 2012 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_X509_CERTIFICATE_H_
 #define NET_CERT_X509_CERTIFICATE_H_
 
 #include <string.h>
 
 #include <string>
@@ skipping 199 matching lines @@
   // certificate is invalid before the |valid_start| date and invalid after
   // the |valid_expiry| date.
   // If we were unable to parse either date from the certificate (or if the cert
   // lacks either date), the date will be null (i.e., is_null() will be true).
   const base::Time& valid_start() const { return valid_start_; }
   const base::Time& valid_expiry() const { return valid_expiry_; }
 
   // The fingerprint of this certificate.
   const SHA1HashValue& fingerprint() const { return fingerprint_; }
 
+  // The SHA-256 fingerprint of this certificate.
+  const SHA256HashValue fingerprint256() const {
+    net::X509Certificate::OSCertHandles intermediate;
+    return CalculateChainFingerprint256(os_cert_handle(), intermediate);
+  }
+
   // The fingerprint of the intermediate CA certificates.
   const SHA1HashValue& ca_fingerprint() const {
     return ca_fingerprint_;
   }
 
   // Gets the DNS names in the certificate.  Pursuant to RFC 2818, Section 3.1
   // Server Identity, if the certificate has a subjectAltName extension of
   // type dNSName, this method gets the DNS names in that extension.
   // Otherwise, it gets the common name in the subject field.
   void GetDNSNames(std::vector<std::string>* dns_names) const;
@@ skipping 280 matching lines @@
   // based on the type of the certificate.
   std::string default_nickname_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(X509Certificate);
 };
 
 }  // namespace net
 
 #endif  // NET_CERT_X509_CERTIFICATE_H_