diff -r 000000000000 -r 6474c204b198 widget/qt/nsScreenManagerQt.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/qt/nsScreenManagerQt.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; 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/. */
+
+#ifndef nsScreenManagerQt_h___
+#define nsScreenManagerQt_h___
+
+#include "nsIScreenManager.h"
+#include "nsIScreen.h"
+#include "nsCOMPtr.h"
+
+//------------------------------------------------------------------------
+class QDesktopWidget;
+
+class nsScreenManagerQt : public nsIScreenManager
+{
+public:
+  nsScreenManagerQt ( );
+  virtual ~nsScreenManagerQt();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSISCREENMANAGER
+
+private:
+
+  void init ();
+
+  nsCOMPtr<nsIScreen> *screens;
+  QDesktopWidget *desktop;
+  int nScreens;
+  bool mInitialized;
+};
+
+#endif  // nsScreenManagerQt_h___