diff -r 000000000000 -r 6474c204b198 toolkit/xre/nsQAppInstance.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/xre/nsQAppInstance.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 et sw=2 tw=80: */
+/* 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 nsQAppInstance_h
+#define nsQAppInstance_h
+
+// declared in nsAppRunner.cpp
+extern int    gArgc;
+extern char **gArgv;
+
+class QGuiApplication;
+class nsQAppInstance
+{
+public:
+  static void AddRef(int& aArgc = gArgc,
+                     char** aArgv = gArgv,
+                     bool aDefaultProcess = false);
+  static void Release(void);
+
+private:
+  static QGuiApplication *sQAppInstance;
+  static int sQAppRefCount;
+};
+
+#endif /* nsQAppInstance_h */