diff -r 000000000000 -r 6474c204b198 xpcom/io/nsPipe.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/io/nsPipe.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: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 nsPipe_h__
+#define nsPipe_h__
+
+#define NS_PIPE_CONTRACTID \
+  "@mozilla.org/pipe;1"
+#define NS_PIPE_CID \
+{ /* e4a0ee4e-0775-457b-9118-b3ae97a7c758 */ \
+  0xe4a0ee4e,                                \
+  0x0775,                                    \
+  0x457b,                                    \
+  {0x91,0x18,0xb3,0xae,0x97,0xa7,0xc7,0x58}  \
+}
+
+// Generic factory constructor for the nsPipe class
+nsresult NS_HIDDEN
+nsPipeConstructor(nsISupports *outer, REFNSIID iid, void **result);
+
+#endif  // !defined(nsPipe_h__)