Fix remaining incompatibilities between scoped_ptr and unique_ptr.

net/cert/ct_objects_extractor_openssl.cc

 // Copyright 2013 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/ct_objects_extractor.h"
 
 #include <string.h>
 
 #include <openssl/bytestring.h>
 #include <openssl/obj.h>
@@ skipping 214 matching lines @@
   if (len < 0)
     return false;
   uint8_t* ptr =
       reinterpret_cast<uint8_t*>(base::WriteInto(&to_be_signed, len + 1));
   if (i2d_X509_CINF(leaf_copy->cert_info, &ptr) < 0)
     return false;
 
   // Extract the issuer's public key.
   std::string issuer_der;
   if (!X509Certificate::GetDEREncoded(issuer, &issuer_der))
-    return ScopedX509();
+    return false;
   base::StringPiece issuer_key;
   if (!asn1::ExtractSPKIFromDERCert(issuer_der, &issuer_key))
     return false;
 
   // Fill in the LogEntry.
   result->type = ct::LogEntry::LOG_ENTRY_TYPE_PRECERT;
   result->tbs_certificate.swap(to_be_signed);
   crypto::SHA256HashString(issuer_key,
                            result->issuer_key_hash.data,
                            sizeof(result->issuer_key_hash.data));
@@ skipping 109 matching lines @@
   if (!x509_exts || ptr != CBS_data(&extensions) + CBS_len(&extensions))
     return false;
 
   return GetSCTListFromX509_EXTENSIONS(
       x509_exts.get(), kOCSPExtensionOid, sizeof(kOCSPExtensionOid), sct_list);
 }
 
 }  // namespace ct
 
 }  // namespace net