diff -r 000000000000 -r 6474c204b198 extensions/spellcheck/idl/mozISpellI18NManager.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extensions/spellcheck/idl/mozISpellI18NManager.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,21 @@
+/* -*- Mode: C++; tab-width: 4; 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/. */
+
+#include "nsISupports.idl"
+#include "mozISpellI18NUtil.idl"
+
+[scriptable, uuid(AEB8936F-219C-4D3C-8385-D9382DAA551A)]
+
+/**
+ * This interface contains various I18N related code used in various places
+ * by the spell checker.
+ */
+
+interface mozISpellI18NManager : nsISupports {
+  /**
+   * Get a mozISpellI18NUtil interface that best matches the given language.
+   */
+  mozISpellI18NUtil getUtil(in wstring language);
+};