Switch to standard integer types in sandbox/.

sandbox/linux/tests/scoped_temporary_file_unittest.cc

 // Copyright 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/linux/tests/scoped_temporary_file.h"
 
 #include <errno.h>
 #include <fcntl.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <string>
 
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
@@ skipping 48 matching lines @@
 
   errno = 0;
   struct stat buf;
   ASSERT_EQ(-1, stat(temp_file_name.c_str(), &buf));
   ASSERT_EQ(ENOENT, errno);
 }
 
 }  // namespace
 
 }  // namespace sandbox