Remove the fingerprint and ca_fingerprint from X509Certificate

ios/web/public/cert_policy.h

 // Copyright 2014 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 IOS_WEB_PUBLIC_CERT_POLICY_H_
 #define IOS_WEB_PUBLIC_CERT_POLICY_H_
 
 #include <map>
 
 #include "net/base/hash_value.h"
@@ skipping 28 matching lines @@
   // For a certificate to be allowed, it must not have any *additional* errors
   // from when it was allowed.
   // This function returns either ALLOWED or UNKNOWN, but never DENIED.
   Judgment Check(net::X509Certificate* cert, net::CertStatus error) const;
 
   // Causes the policy to allow this certificate for a given |error|.
   void Allow(net::X509Certificate* cert, net::CertStatus error);
 
  private:
   // The set of fingerprints of allowed certificates.
-  std::map<net::SHA1HashValue, net::CertStatus, net::SHA1HashValueLessThan>
+  std::map<net::SHA256HashValue, net::CertStatus, net::SHA256HashValueLessThan>
       allowed_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_CERT_POLICY_H_