diff -r 000000000000 -r 6474c204b198 xpfe/appshell/src/nsAppShellService.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpfe/appshell/src/nsAppShellService.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,54 @@
+/* -*- 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 __nsAppShellService_h
+#define __nsAppShellService_h
+
+#include "nsIAppShellService.h"
+#include "nsIObserver.h"
+
+//Interfaces Needed
+#include "nsWebShellWindow.h"
+#include "nsStringFwd.h"
+#include "nsAutoPtr.h"
+#include "mozilla/Attributes.h"
+
+// {0099907D-123C-4853-A46A-43098B5FB68C}
+#define NS_APPSHELLSERVICE_CID \
+{ 0x99907d, 0x123c, 0x4853, { 0xa4, 0x6a, 0x43, 0x9, 0x8b, 0x5f, 0xb6, 0x8c } }
+
+class nsAppShellService MOZ_FINAL : public nsIAppShellService,
+                                    public nsIObserver
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIAPPSHELLSERVICE
+  NS_DECL_NSIOBSERVER
+
+  nsAppShellService();
+
+protected:
+  ~nsAppShellService();
+
+  nsresult CreateHiddenWindowHelper(bool aIsPrivate);
+  void EnsurePrivateHiddenWindow();
+
+  nsresult JustCreateTopWindow(nsIXULWindow *aParent,
+                               nsIURI *aUrl, 
+                               uint32_t aChromeMask,
+                               int32_t aInitialWidth, int32_t aInitialHeight,
+                               bool aIsHiddenWindow,
+                               nsWebShellWindow **aResult);
+  uint32_t CalculateWindowZLevel(nsIXULWindow *aParent, uint32_t aChromeMask);
+
+  nsRefPtr<nsWebShellWindow>  mHiddenWindow;
+  nsRefPtr<nsWebShellWindow>  mHiddenPrivateWindow;
+  bool                        mXPCOMWillShutDown;
+  bool                        mXPCOMShuttingDown;
+  uint16_t                    mModalWindowCount;
+  bool                        mApplicationProvidedHiddenWindow;
+};
+
+#endif