diff -r 000000000000 -r 6474c204b198 widget/xpwidgets/ContentHelper.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/xpwidgets/ContentHelper.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,40 @@
+/* -*- 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 __mozilla_widget_ContentHelper_h__
+#define __mozilla_widget_ContentHelper_h__
+
+#include "nsIFrame.h"
+#include "nsIWidget.h"
+#include "mozilla/layers/APZCTreeManager.h"
+
+namespace mozilla {
+namespace widget {
+
+/*
+ * Allow different platform widgets to access Content/DOM stuff.
+ */
+class ContentHelper
+{
+  typedef mozilla::layers::AllowedTouchBehavior AllowedTouchBehavior;
+  typedef uint32_t TouchBehaviorFlags;
+
+private:
+  static uint32_t GetTouchActionFromFrame(nsIFrame* aFrame);
+  static void UpdateAllowedBehavior(uint32_t aTouchActionValue, bool aConsiderPanning, TouchBehaviorFlags& aOutBehavior);
+
+public:
+  /*
+   * Performs hit testing on content, finds frame that corresponds to the aPoint and retrieves
+   * touch-action css property value from it according the rules specified in the spec:
+   * http://www.w3.org/TR/pointerevents/#the-touch-action-css-property.
+   */
+  static TouchBehaviorFlags GetAllowedTouchBehavior(nsIWidget* aWidget, const nsIntPoint& aPoint);
+};
+
+}
+}
+
+#endif /*__mozilla_widget_ContentHelper_h__ */
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