Linux: Unify udev scopers.

components/storage_monitor/udev_util_linux.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 COMPONENTS_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_
 #define COMPONENTS_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_
 
 #include <libudev.h>
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace storage_monitor {
 
-// Deleter for ScopedUdevObject.
-struct UdevDeleter {
-  void operator()(struct udev* udev);
-};
-typedef scoped_ptr<struct udev, UdevDeleter> ScopedUdevObject;
-
-// Deleter for ScopedUdevDeviceObject().
-struct UdevDeviceDeleter {
-  void operator()(struct udev_device* device);
-};
-typedef scoped_ptr<struct udev_device, UdevDeviceDeleter>
-    ScopedUdevDeviceObject;
-
 // Wrapper function for udev_device_get_property_value() that also checks for
 // valid but empty values.
 std::string GetUdevDevicePropertyValue(struct udev_device* udev_device,
                                        const char* key);
 
 // Helper for udev_device_new_from_syspath()/udev_device_get_property_value()
 // pair. |device_path| is the absolute path to the device, including /sys.
 bool GetUdevDevicePropertyValueByPath(const base::FilePath& device_path,
                                       const char* key,
                                       std::string* result);
 
 }  // namespace storage_monitor
 
 #endif  // COMPONENTS_STORAGE_MONITOR_UDEV_UTIL_LINUX_H_