chromeos: Remove dbus::FileDescriptor from LorgnetteManagerClient

chromeos/dbus/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_LORGNETTE_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_LORGNETTE_MANAGER_CLIENT_H_
 
 #include <map>
+#include <string>
 
 #include "base/callback.h"
-#include "base/files/file.h"
 #include "base/macros.h"
-#include "base/memory/ref_counted_memory.h"
 #include "chromeos/chromeos_export.h"
 #include "chromeos/dbus/dbus_client.h"
 
 namespace chromeos {
 
 // LorgnetteManagerClient is used to communicate with the lorgnette
 // document scanning daemon.
 class CHROMEOS_EXPORT LorgnetteManagerClient : public DBusClient {
  public:
   // The property information for each scanner retured by ListScanners.
   typedef std::map<std::string, std::string> ScannerTableEntry;
   typedef std::map<std::string, ScannerTableEntry> ScannerTable;
 
   // Callback type for ListScanners().  Returns a map which contains
   // a ScannerTableEntry for each available scanner.
   typedef base::Callback<void(
       bool succeeded, const ScannerTable&)> ListScannersCallback;
 
-  // Called once ScanImageToFile() is complete. Takes one parameter:
-  // - succeeded: was the scan completed successfully.
-  typedef base::Callback<void(bool succeeded)> ScanImageToFileCallback;
-
   // Called once ScanImageToString() is complete. Takes two parameters:
   // - succeeded: was the scan completed successfully.
   // - image_data: the contents of the image.
   typedef base::Callback<void(
       bool succeeded,
       const std::string& image_data)> ScanImageToStringCallback;
 
   // Attributes provided to a scan request.
   struct ScanProperties {
     ScanProperties() : resolution_dpi(0) {}
     std::string mode;  // Can be "Color", "Gray", or "Lineart".
     int resolution_dpi;
   };
 
   ~LorgnetteManagerClient() override;
 
   // Gets a list of scanners from the lorgnette manager.
   virtual void ListScanners(const ListScannersCallback& callback) = 0;
 
-  // Request a scanned image to be scanned to |file| and calls |callback|
-  // when completed.  Image data will be stored in the .png format.
-  virtual void ScanImageToFile(std::string device_name,
-                               const ScanProperties& properties,
-                               const ScanImageToFileCallback& callback,
-                               base::File* file) = 0;
-
   // Request a scanned image and calls |callback| when completed with a string
   // pointing at the scanned image data.  Image data will be stored in the .png
   // format.
   virtual void ScanImageToString(std::string device_name,
                                  const ScanProperties& properties,
                                  const ScanImageToStringCallback& callback) = 0;
 
   // Factory function, creates a new instance and returns ownership.
   // For normal usage, access the singleton via DBusThreadManager::Get().
   static LorgnetteManagerClient* Create();
 
  protected:
   // Create() should be used instead.
   LorgnetteManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LorgnetteManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_LORGNETTE_MANAGER_CLIENT_H_