diff -r 000000000000 -r 6474c204b198 tools/profiler/nsIProfileSaveEvent.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/profiler/nsIProfileSaveEvent.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+/* -*- 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 "nsISupports.idl"
+
+[uuid(f5ad0830-e178-41f9-b253-db9b4fae4cb3)]
+interface nsIProfileSaveEvent : nsISupports
+{
+  /**
+   * Call this method when observing this event to include
+   * a sub profile origining from an external source such
+   * as a non native thread or another process.
+   */
+  void AddSubProfile(in string aMarker);
+};
+
+