Convert device to std::unique_ptr

device/udev_linux/udev0_loader.h

Index: device/udev_linux/udev0_loader.h
diff --git a/device/udev_linux/udev0_loader.h b/device/udev_linux/udev0_loader.h
index 24591931fae4e3d21ffdcabceaf4402ba7a0f1e7..5dc39becf97972ee4de320e17edd2aa618802e21 100644
--- a/device/udev_linux/udev0_loader.h
+++ b/device/udev_linux/udev0_loader.h
@@ -5,8 +5,9 @@
 #ifndef DEVICE_UDEV_LINUX_UDEV0_LOADER_H_
 #define DEVICE_UDEV_LINUX_UDEV0_LOADER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "device/udev_linux/udev_loader.h"
 
 class LibUdev0Loader;
@@ -74,7 +75,7 @@ class Udev0Loader : public UdevLoader {
   void udev_set_log_priority(struct udev* udev, int priority) override;
   void udev_unref(udev* udev) override;
 
-  scoped_ptr<LibUdev0Loader> lib_loader_;
+  std::unique_ptr<LibUdev0Loader> lib_loader_;
 
   DISALLOW_COPY_AND_ASSIGN(Udev0Loader);
 };