Convert device to std::unique_ptr

device/usb/usb_device_filter.cc

Index: device/usb/usb_device_filter.cc
diff --git a/device/usb/usb_device_filter.cc b/device/usb/usb_device_filter.cc
index 52d1356e7ab74cfc7afba178a0dcd09e00d68a89..9e57d3d92d47ac39dd20dddbb7d983bc4592f8dd 100644
--- a/device/usb/usb_device_filter.cc
+++ b/device/usb/usb_device_filter.cc
@@ -4,6 +4,7 @@
 
 #include "device/usb/usb_device_filter.h"
 
+#include <memory>
 #include <utility>
 
 #include "base/values.h"
@@ -90,8 +91,8 @@ bool UsbDeviceFilter::Matches(scoped_refptr<UsbDevice> device) const {
   return true;
 }
 
-scoped_ptr<base::Value> UsbDeviceFilter::ToValue() const {
-  scoped_ptr<base::DictionaryValue> obj(new base::DictionaryValue());
+std::unique_ptr<base::Value> UsbDeviceFilter::ToValue() const {
+  std::unique_ptr<base::DictionaryValue> obj(new base::DictionaryValue());
 
   if (vendor_id_set_) {
     obj->SetInteger(kVendorIdKey, vendor_id_);