Switch to standard integer types in extensions/.

extensions/utility/unpacker.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 "extensions/utility/unpacker.h"
 
+#include <stddef.h>
+
 #include <set>
 #include <utility>
 
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/i18n/rtl.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 270 matching lines @@
 
 void Unpacker::SetError(const std::string& error) {
   SetUTF16Error(base::UTF8ToUTF16(error));
 }
 
 void Unpacker::SetUTF16Error(const base::string16& error) {
   error_message_ = error;
 }
 
 }  // namespace extensions