Convert //chrome from scoped_ptr to std::unique_ptr

chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc

Index: chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc
diff --git a/chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc b/chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc
index d498d9507b9153f486a230f48b35188647787bae..4555f8c66080efb027a650bc3f094359025615b5 100644
--- a/chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc
+++ b/chrome/browser/nacl_host/test/nacl_gdb_browsertest.cc
@@ -2,10 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <memory>
+
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_util.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/win/windows_version.h"
 #include "build/build_config.h"