diff -r 000000000000 -r 6474c204b198 xpcom/io/nsIOUtil.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/io/nsIOUtil.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsIOUtil_h__
+#define nsIOUtil_h__
+
+#define NS_IOUTIL_CID                                                \
+{ 0xeb833911, 0x4f49, 0x4623,                                        \
+    { 0x84, 0x5f, 0xe5, 0x8a, 0x8e, 0x6d, 0xe4, 0xc2 } }
+
+
+#include "nsIIOUtil.h"
+#include "mozilla/Attributes.h"
+
+class nsIOUtil MOZ_FINAL : public nsIIOUtil
+{
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIIOUTIL
+};
+
+#endif /* nsIOUtil_h__ */