Convert device to std::unique_ptr

device/usb/usb_device_handle_impl.h

Index: device/usb/usb_device_handle_impl.h
diff --git a/device/usb/usb_device_handle_impl.h b/device/usb/usb_device_handle_impl.h
index 6365383a517d05579797df86b509ed6d63485657..82b0a5e082efcc703914152079e8abd4b4933777 100644
--- a/device/usb/usb_device_handle_impl.h
+++ b/device/usb/usb_device_handle_impl.h
@@ -9,6 +9,7 @@
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <set>
 #include <vector>
 
@@ -179,7 +180,7 @@ class UsbDeviceHandleImpl : public UsbDeviceHandle {
   // Submits a transfer and starts tracking it. Retains the buffer and copies
   // the completion callback until the transfer finishes, whereupon it invokes
   // the callback then releases the buffer.
-  void SubmitTransfer(scoped_ptr<Transfer> transfer);
+  void SubmitTransfer(std::unique_ptr<Transfer> transfer);
 
   // Removes the transfer from the in-flight transfer set and invokes the
   // completion callback.