chromeos: Remove dbus::FileDescriptor from LorgnetteManagerClient

chromeos/dbus/mock_lorgnette_manager_client.h

 // 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.
 
 #ifndef CHROMEOS_DBUS_MOCK_LORGNETTE_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_MOCK_LORGNETTE_MANAGER_CLIENT_H_
 
 #include "lorgnette_manager_client.h"
 
 #include <gmock/gmock.h>
 
 namespace chromeos {
 
 class MockLorgnetteManagerClient : public LorgnetteManagerClient {
  public:
   MockLorgnetteManagerClient();
   ~MockLorgnetteManagerClient() override;
 
   MOCK_METHOD1(ListScanners, void(const ListScannersCallback& callback));
-  MOCK_METHOD4(ScanImageToFile, void(std::string device_name,
-                                     const ScanProperties& properties,
-                                     const ScanImageToFileCallback& callback,
-                                     base::File* file));
   MOCK_METHOD3(ScanImageToString,
                void(std::string device_name,
                     const ScanProperties& properties,
                     const ScanImageToStringCallback& callback));
   MOCK_METHOD1(Init, void(dbus::Bus* bus));
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_MOCK_LORGNETTE_MANAGER_CLIENT_H_