diff -r 000000000000 -r 6474c204b198 ipc/glue/ProtocolTypes.ipdlh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/ProtocolTypes.ipdlh	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
+/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
+/* 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/. */
+
+namespace mozilla {
+namespace ipc {
+
+struct ProtocolFdMapping
+{
+    uint32_t protocolId;
+    FileDescriptor fd;
+};
+
+}
+}
+