Make ONCCertificateImporter async.

chromeos/network/onc/mock_certificate_importer.h

-// 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.
-
-#ifndef CHROMEOS_NETWORK_ONC_MOCK_CERTIFICATE_IMPORTER_H_
-#define CHROMEOS_NETWORK_ONC_MOCK_CERTIFICATE_IMPORTER_H_
-
-#include "base/basictypes.h"
-#include "base/values.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/network/onc/onc_certificate_importer.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace chromeos {
-namespace onc {
-
-class CHROMEOS_EXPORT MockCertificateImporter : public CertificateImporter {
- public:
-  MockCertificateImporter();
-  virtual ~MockCertificateImporter();
-  MOCK_METHOD3(ImportCertificates, bool(const base::ListValue&,
-                                        ::onc::ONCSource,
-                                        net::CertificateList*));
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockCertificateImporter);
-};
-
-}  // namespace onc
-}  // namespace chromeos
-
-#endif  // CHROMEOS_NETWORK_ONC_MOCK_CERTIFICATE_IMPORTER_H_