diff -r 000000000000 -r 6474c204b198 netwerk/dns/nsIDNSRequest.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/dns/nsIDNSRequest.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+/* 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"
+
+/**
+ * nsIDNSRequest
+ */
+[scriptable, uuid(3e538aea-d84b-4bf4-bae1-55f9969fe50e)]
+interface nsIDNSRequest : nsISupports
+{
+    /**
+     * called to cancel a pending asynchronous DNS request.  the listener will
+     * passed to asyncResolve will be notified immediately with a status code
+     * of NS_ERROR_ABORT.
+     */
+    void cancel();
+};