diff -r 000000000000 -r 6474c204b198 intl/strres/public/nsIStringBundleOverride.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/strres/public/nsIStringBundleOverride.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* -*- Mode: C++; 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"
+
+interface nsISimpleEnumerator;
+
+// to be implemented by an embeddor that wants to override some strings
+[scriptable, uuid(965eb278-5678-456b-82a7-20a0c86a803c)]
+interface nsIStringBundleOverride : nsISupports
+{
+  /**
+   * get the override value for a particular key in a particular
+   * string bundle
+   */
+  AString getStringFromName(in AUTF8String url,
+                            in ACString key);
+
+  /**
+   * get all override keys for a given string bundle
+   */
+  nsISimpleEnumerator enumerateKeysInBundle(in AUTF8String url);
+};