Linux: Unify udev scopers.

device/udev_linux/udev.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 DEVICE_UDEV_LINUX_UDEV_H_
+#define DEVICE_UDEV_LINUX_UDEV_H_
+
+#include <libudev.h>
+
+#include "base/memory/scoped_ptr.h"
+
+#if !defined(USE_UDEV)
+#error "USE_UDEV not defined"
+#endif
+
+namespace device {
+
+struct UdevDeleter {
+  void operator()(udev* dev) const;
+};
+struct UdevEnumerateDeleter {
+  void operator()(udev_enumerate* enumerate) const;
+};
+struct UdevDeviceDeleter {
+  void operator()(udev_device* device) const;
+};
+struct UdevMonitorDeleter {
+  void operator()(udev_monitor* monitor) const;
+};
+
+typedef scoped_ptr<udev, UdevDeleter> ScopedUdevPtr;
+typedef scoped_ptr<udev_enumerate, UdevEnumerateDeleter> ScopedUdevEnumeratePtr;
+typedef scoped_ptr<udev_device, UdevDeviceDeleter> ScopedUdevDevicePtr;
+typedef scoped_ptr<udev_monitor, UdevMonitorDeleter> ScopedUdevMonitorPtr;
+
+}  // namespace device
+
+#endif  // DEVICE_UDEV_LINUX_UDEV_H_