Convert device to std::unique_ptr

device/serial/data_receiver.cc

Index: device/serial/data_receiver.cc
diff --git a/device/serial/data_receiver.cc b/device/serial/data_receiver.cc
index 508667ffd22ec43a8a5d7b7700de97d563095cf5..95f2154039decc37c871d3fa0d4b8c96c706cc09 100644
--- a/device/serial/data_receiver.cc
+++ b/device/serial/data_receiver.cc
@@ -5,6 +5,7 @@
 #include "device/serial/data_receiver.h"
 
 #include <limits>
+#include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ -233,9 +234,8 @@ bool DataReceiver::PendingReceive::DispatchDataFrame(
       FROM_HERE,
       base::Bind(
           receive_callback_,
-          base::Passed(scoped_ptr<ReadOnlyBuffer>(new Buffer(
-              receiver_,
-              this,
+          base::Passed(std::unique_ptr<ReadOnlyBuffer>(new Buffer(
+              receiver_, this,
               reinterpret_cast<char*>(&data->data[0]) + data->offset,
               static_cast<uint32_t>(data->data.size() - data->offset))))));
   return false;