diff -r 000000000000 -r 6474c204b198 layout/xul/nsIRootBox.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/xul/nsIRootBox.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- 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 nsIRootBox_h___
+#define nsIRootBox_h___
+
+#include "nsQueryFrame.h"
+class nsPopupSetFrame;
+class nsIContent;
+class nsIPresShell;
+
+class nsIRootBox
+{
+public:
+  NS_DECL_QUERYFRAME_TARGET(nsIRootBox)
+
+  virtual nsPopupSetFrame* GetPopupSetFrame() = 0;
+  virtual void SetPopupSetFrame(nsPopupSetFrame* aPopupSet) = 0;
+
+  virtual nsIContent* GetDefaultTooltip() = 0;
+  virtual void SetDefaultTooltip(nsIContent* aTooltip) = 0;
+
+  virtual nsresult AddTooltipSupport(nsIContent* aNode) = 0;
+  virtual nsresult RemoveTooltipSupport(nsIContent* aNode) = 0;
+
+  static nsIRootBox* GetRootBox(nsIPresShell* aShell);
+};
+
+#endif
+