Revert "Switch to BoringSSL."

net/cert/cert_verify_proc_openssl.cc

 // 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.
 
 #include "net/cert/cert_verify_proc_openssl.h"
 
 #include <openssl/x509v3.h>
 
 #include <string>
 #include <vector>
@@ skipping 83 matching lines @@
 // param directly.
 void sk_X509_free_fn(STACK_OF(X509)* st) {
   sk_X509_free(st);
 }
 
 void GetCertChainInfo(X509_STORE_CTX* store_ctx,
                       CertVerifyResult* verify_result) {
   STACK_OF(X509)* chain = X509_STORE_CTX_get_chain(store_ctx);
   X509* verified_cert = NULL;
   std::vector<X509*> verified_chain;
-  for (size_t i = 0; i < sk_X509_num(chain); ++i) {
+  for (int i = 0; i < sk_X509_num(chain); ++i) {
     X509* cert = sk_X509_value(chain, i);
     if (i == 0) {
       verified_cert = cert;
     } else {
       verified_chain.push_back(cert);
     }
 
     // Only check the algorithm status for certificates that are not in the
     // trust store.
-    if (i < static_cast<size_t>(store_ctx->last_untrusted)) {
+    if (i < store_ctx->last_untrusted) {
       int sig_alg = OBJ_obj2nid(cert->sig_alg->algorithm);
       if (sig_alg == NID_md2WithRSAEncryption) {
         verify_result->has_md2 = true;
       } else if (sig_alg == NID_md4WithRSAEncryption) {
         verify_result->has_md4 = true;
       } else if (sig_alg == NID_md5WithRSAEncryption) {
         verify_result->has_md5 = true;
       }
     }
   }
@@ skipping 19 matching lines @@
       TestRootCerts* root_certs = TestRootCerts::GetInstance();
       if (root_certs->Contains(root))
           verify_result->is_issued_by_known_root = false;
     }
   }
 }
 
 void AppendPublicKeyHashes(X509_STORE_CTX* store_ctx,
                            HashValueVector* hashes) {
   STACK_OF(X509)* chain = X509_STORE_CTX_get_chain(store_ctx);
-  for (size_t i = 0; i < sk_X509_num(chain); ++i) {
+  for (int i = 0; i < sk_X509_num(chain); ++i) {
     X509* cert = sk_X509_value(chain, i);
 
     std::string der_data;
     if (!X509Certificate::GetDEREncoded(cert, &der_data))
       continue;
 
     base::StringPiece der_bytes(der_data);
     base::StringPiece spki_bytes;
     if (!asn1::ExtractSPKIFromDERCert(der_bytes, &spki_bytes))
       continue;
@@ skipping 67 matching lines @@
 
   GetCertChainInfo(ctx.get(), verify_result);
   AppendPublicKeyHashes(ctx.get(), &verify_result->public_key_hashes);
   if (IsCertStatusError(verify_result->cert_status))
     return MapCertStatusToNetError(verify_result->cert_status);
 
   return OK;
 }
 
 }  // namespace net