use std::unique_ptr for the callback argument of QUIC's ProofVerifier::Verify proof to make ownersh…

net/quic/crypto/proof_test.cc

 // Copyright (c) 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 <memory>
 
 #include "base/files/file_path.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
@@ skipping 54 matching lines @@
   TestCompletionCallback comp_callback;
   bool ok;
   string error_details;
   std::unique_ptr<ProofVerifyContext> verify_context(
       CryptoTestUtils::ProofVerifyContextForTesting());
   TestProofVerifierCallback* callback =
       new TestProofVerifierCallback(&comp_callback, &ok, &error_details);
 
   QuicAsyncStatus status = verifier->VerifyProof(
       hostname, port, server_config, quic_version, chlo_hash, certs, "", proof,
-      verify_context.get(), &error_details, &details, callback);
+      verify_context.get(), &error_details, &details,
+      std::unique_ptr<ProofVerifierCallback>());
 
   switch (status) {
     case QUIC_FAILURE:
       delete callback;
       ASSERT_FALSE(expected_ok);
       ASSERT_NE("", error_details);
       return;
     case QUIC_SUCCESS:
       delete callback;
       ASSERT_TRUE(expected_ok);
@@ skipping 323 matching lines @@
     for (size_t i = 1; i < certs.size(); i++) {
       wrong_certs.push_back(certs[i]);
     }
     RunVerification(verifier.get(), hostname, port, server_config, quic_version,
                     chlo_hash, wrong_certs, signature, false);
   }
 }
 
 }  // namespace test
 }  // namespace net