Revert of Switch to standard integer types in sandbox/.

sandbox/win/sandbox_poc/main_ui_window.cc

Index: sandbox/win/sandbox_poc/main_ui_window.cc
diff --git a/sandbox/win/sandbox_poc/main_ui_window.cc b/sandbox/win/sandbox_poc/main_ui_window.cc
index c000ce13d006882ad38f84763d1cfd7a36a63d36..8d67cecff3ff9d8664e65b2cc3f567a283e4523a 100644
--- a/sandbox/win/sandbox_poc/main_ui_window.cc
+++ b/sandbox/win/sandbox_poc/main_ui_window.cc
@@ -1,14 +1,11 @@
 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-
-#include "sandbox/win/sandbox_poc/main_ui_window.h"
 
 #include <windows.h>
 #include <CommCtrl.h>
 #include <commdlg.h>
 #include <stdarg.h>
-#include <stddef.h>
 #include <time.h>
 #include <windowsx.h>
 #include <atlbase.h>
@@ -16,6 +13,7 @@
 #include <algorithm>
 #include <sstream>
 
+#include "sandbox/win/sandbox_poc/main_ui_window.h"
 #include "base/logging.h"
 #include "sandbox/win/sandbox_poc/resource.h"
 #include "sandbox/win/src/acl.h"