diff -r 000000000000 -r 6474c204b198 dom/events/ScrollAreaEvent.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/events/ScrollAreaEvent.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,86 @@
+/* -*- 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_dom_ScrollAreaEvent_h_
+#define mozilla_dom_ScrollAreaEvent_h_
+
+#include "mozilla/dom/DOMRect.h"
+#include "mozilla/dom/ScrollAreaEventBinding.h"
+#include "mozilla/dom/UIEvent.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/EventForwards.h"
+#include "nsIDOMScrollAreaEvent.h"
+
+namespace mozilla {
+namespace dom {
+
+class ScrollAreaEvent : public UIEvent,
+                        public nsIDOMScrollAreaEvent
+{
+public:
+  ScrollAreaEvent(EventTarget* aOwner,
+                  nsPresContext* aPresContext,
+                  InternalScrollAreaEvent* aEvent);
+
+  NS_DECL_ISUPPORTS_INHERITED
+
+  NS_DECL_NSIDOMSCROLLAREAEVENT
+
+  NS_FORWARD_NSIDOMUIEVENT(UIEvent::)
+
+  NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION
+  NS_IMETHOD DuplicatePrivateData()
+  {
+    return Event::DuplicatePrivateData();
+  }
+  NS_IMETHOD_(void) Serialize(IPC::Message* aMsg, bool aSerializeInterfaceType) MOZ_OVERRIDE;
+  NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg, void** aIter) MOZ_OVERRIDE;
+
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
+  {
+    return ScrollAreaEventBinding::Wrap(aCx, this);
+  }
+
+  float X() const
+  {
+    return mClientArea.Left();
+  }
+
+  float Y() const
+  {
+    return mClientArea.Top();
+  }
+
+  float Width() const
+  {
+    return mClientArea.Width();
+  }
+
+  float Height() const
+  {
+    return mClientArea.Height();
+  }
+
+  void InitScrollAreaEvent(const nsAString& aType,
+                           bool aCanBubble,
+                           bool aCancelable,
+                           nsIDOMWindow* aView,
+                           int32_t aDetail,
+                           float aX, float aY,
+                           float aWidth, float aHeight,
+                           ErrorResult& aRv)
+  {
+    aRv = InitScrollAreaEvent(aType, aCanBubble, aCancelable, aView,
+                              aDetail, aX, aY, aWidth, aHeight);
+  }
+
+protected:
+  DOMRect mClientArea;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_ScrollAreaEvent_h_