Remove SSLPrivateKey metadata hooks.

chrome/browser/chromeos/certificate_provider/certificate_info.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 CHROME_BROWSER_CHROMEOS_CERTIFICATE_PROVIDER_CERTIFICATE_INFO_H_
 #define CHROME_BROWSER_CHROMEOS_CERTIFICATE_PROVIDER_CERTIFICATE_INFO_H_
 
-#include <stddef.h>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "net/cert/x509_certificate.h"
 #include "net/ssl/ssl_private_key.h"
 
 namespace chromeos {
 namespace certificate_provider {
 
 // Holds all information of a certificate that must be synchronously available
 // to implement net::SSLPrivateKey.
 struct CertificateInfo {
   CertificateInfo();
   CertificateInfo(const CertificateInfo& other);
   ~CertificateInfo();
 
-  net::SSLPrivateKey::Type type = net::SSLPrivateKey::Type::RSA;
-  size_t max_signature_length_in_bytes = 0;
   scoped_refptr<net::X509Certificate> certificate;
   std::vector<net::SSLPrivateKey::Hash> supported_hashes;
 };
 using CertificateInfoList = std::vector<CertificateInfo>;
 
 }  // namespace certificate_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CERTIFICATE_PROVIDER_CERTIFICATE_INFO_H_