Rewrite simple uses of base::ListValue::Append(base::Value*) on CrOS.

chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.cc

 // 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.
 
 #include "chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/values.h"
@@ skipping 106 matching lines @@
   for (net::CertificateList::const_iterator it = certs->begin();
        it != certs->end();
        ++it) {
     std::string der_encoding;
     net::X509Certificate::GetDEREncoded((*it)->os_cert_handle(), &der_encoding);
     client_certs->Append(base::BinaryValue::CreateWithCopiedBuffer(
         der_encoding.data(), der_encoding.size()));
   }
 
   std::unique_ptr<base::ListValue> results(new base::ListValue());
-  results->Append(client_certs.release());
+  results->Append(std::move(client_certs));
   Respond(ArgumentList(std::move(results)));
 }
 
 EnterprisePlatformKeysImportCertificateFunction::
     ~EnterprisePlatformKeysImportCertificateFunction() {
 }
 
 ExtensionFunction::ResponseAction
 EnterprisePlatformKeysImportCertificateFunction::Run() {
   std::unique_ptr<api_epk::ImportCertificate::Params> params(
@@ skipping 181 matching lines @@
     const std::string& data) {
   if (success) {
     Respond(ArgumentList(
         api_epk::ChallengeUserKey::Results::Create(VectorFromString(data))));
   } else {
     Respond(Error(data));
   }
 }
 
 }  // namespace extensions