diff -r 000000000000 -r 6474c204b198 dom/interfaces/core/nsIDOMProcessingInstruction.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/core/nsIDOMProcessingInstruction.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+/* -*- 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 "nsIDOMCharacterData.idl"
+
+/**
+ * The nsIDOMProcessingInstruction interface represents a 
+ * "processing instruction", used in XML as a way to keep processor-specific 
+ * information in the text of the document.
+ *
+ * For more information on this interface please see 
+ * http://www.w3.org/TR/DOM-Level-2-Core/ and
+ * http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html
+ */
+
+[scriptable, uuid(91f2e856-5596-44d6-b396-0a02d8ec28c6)]
+interface nsIDOMProcessingInstruction : nsIDOMCharacterData
+{
+  readonly attribute DOMString        target;
+};