Convert device to std::unique_ptr

device/serial/serial_connection.h

Index: device/serial/serial_connection.h
diff --git a/device/serial/serial_connection.h b/device/serial/serial_connection.h
index 7a88d6b7423448f31eb1e5c793af2a409582ce5f..32c2ca2b1cbe9b15d194a9f074fb33920341f1ee 100644
--- a/device/serial/serial_connection.h
+++ b/device/serial/serial_connection.h
@@ -7,9 +7,10 @@
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "device/serial/serial.mojom.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
@@ -43,9 +44,9 @@ class SerialConnection : public serial::Connection {
   void Flush(const mojo::Callback<void(bool)>& callback) override;
 
  private:
-  void OnSendPipeReady(scoped_ptr<ReadOnlyBuffer> buffer);
+  void OnSendPipeReady(std::unique_ptr<ReadOnlyBuffer> buffer);
   void OnSendCancelled(int32_t error);
-  void OnReceivePipeReady(scoped_ptr<WritableBuffer> buffer);
+  void OnReceivePipeReady(std::unique_ptr<WritableBuffer> buffer);
 
   scoped_refptr<SerialIoHandler> io_handler_;
   scoped_refptr<DataSinkReceiver> receiver_;