Revert of Switch to standard integer types in sandbox/.

sandbox/linux/services/namespace_utils.cc

 // Copyright 2015 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/linux/services/namespace_utils.h"
 
 #include <fcntl.h>
 #include <sched.h>
-#include <stddef.h>
+#include <sys/types.h>
 #include <sys/stat.h>
-#include <sys/types.h>
 #include <unistd.h>
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/process/launch.h"
@@ skipping 87 matching lines @@
   }
 
   static const char kDeny[] = "deny";
   const ssize_t len = sizeof(kDeny) - 1;
   const ssize_t rc = HANDLE_EINTR(write(fd, kDeny, len));
   RAW_CHECK(IGNORE_EINTR(close(fd)) == 0);
   return rc == len;
 }
 
 }  // namespace sandbox