move X509Certificate::SupportsSSLClientAuth to client_cert_store_mac.cc

net/cert/x509_certificate_ios.cc

 // Copyright (c) 2016 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/x509_certificate.h"
 
 #include <CommonCrypto/CommonDigest.h>
 #include <Security/Security.h>
 
 #include "base/mac/scoped_cftyperef.h"
@@ skipping 340 matching lines @@
     case EVP_PKEY_EC:
       *type = kPublicKeyTypeECDSA;
       break;
     case EVP_PKEY_DH:
       *type = kPublicKeyTypeDH;
       break;
   }
   *size_bits = EVP_PKEY_bits(key);
 }
 
-bool X509Certificate::SupportsSSLClientAuth() const {
-  return false;
-}
-
 CFMutableArrayRef X509Certificate::CreateOSCertChainForCert() const {
   CFMutableArrayRef cert_list =
       CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
   if (!cert_list)
     return nullptr;
 
   CFArrayAppendValue(cert_list, os_cert_handle());
   for (size_t i = 0; i < intermediate_ca_certs_.size(); ++i)
     CFArrayAppendValue(cert_list, intermediate_ca_certs_[i]);
 
@@ skipping 62 matching lines @@
     return false;
   bssl::UniquePtr<EVP_PKEY> scoped_key(X509_get_pubkey(cert.get()));
   if (!scoped_key)
     return false;
   if (!X509_verify(cert.get(), scoped_key.get()))
     return false;
   return X509_check_issued(cert.get(), cert.get()) == X509_V_OK;
 }
 
 }  // namespace net