Revert of Switch to standard integer types in sandbox/.

sandbox/win/src/process_mitigations.cc

 // Copyright (c) 2012 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/src/process_mitigations.h"
 
-#include <stddef.h>
-
 #include <algorithm>
 
 #include "base/win/windows_version.h"
 #include "sandbox/win/src/nt_internals.h"
 #include "sandbox/win/src/restricted_token_utils.h"
 #include "sandbox/win/src/sandbox_rand.h"
 #include "sandbox/win/src/win_utils.h"
 
 namespace {
 
@@ skipping 305 matching lines @@
 }
 
 bool CanSetProcessMitigationsPreStartup(MitigationFlags flags) {
   // These mitigations cannot be enabled prior to startup.
   return !(flags & (MITIGATION_STRICT_HANDLE_CHECKS |
                     MITIGATION_DLL_SEARCH_ORDER));
 }
 
 }  // namespace sandbox