diff -r 000000000000 -r 6474c204b198 extensions/pref/autoconfig/public/nsIReadConfig.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extensions/pref/autoconfig/public/nsIReadConfig.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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"
+
+%{C++
+
+#define NS_READCONFIG_CID\
+  { 0xba5bc4c6,\
+    0x1dd1, \
+    0x11b2, \
+    { 0xbb, 0x89, 0xb8, 0x44, 0xc6, 0xec, 0x03, 0x39 }\
+  }
+ 
+#define NS_READCONFIG_CONTRACTID \
+  "@mozilla.org/readconfig;1" 
+
+%}
+
+[uuid (ba5bc4c6-1dd1-11b2-bb89-b844c6ec0339)]
+interface nsIReadConfig : nsISupports {
+};