diff -r 000000000000 -r 6474c204b198 gfx/thebes/gfxPoint.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/thebes/gfxPoint.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 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 GFX_POINT_H
+#define GFX_POINT_H
+
+#include "nsMathUtils.h"
+#include "mozilla/gfx/BaseSize.h"
+#include "mozilla/gfx/BasePoint.h"
+#include "nsSize.h"
+#include "nsPoint.h"
+
+#include "gfxTypes.h"
+
+struct gfxSize : public mozilla::gfx::BaseSize<gfxFloat, gfxSize> {
+    typedef mozilla::gfx::BaseSize<gfxFloat, gfxSize> Super;
+
+    gfxSize() : Super() {}
+    gfxSize(gfxFloat aWidth, gfxFloat aHeight) : Super(aWidth, aHeight) {}
+    gfxSize(const nsIntSize& aSize) : Super(aSize.width, aSize.height) {}
+};
+
+struct gfxPoint : public mozilla::gfx::BasePoint<gfxFloat, gfxPoint> {
+    typedef mozilla::gfx::BasePoint<gfxFloat, gfxPoint> Super;
+
+    gfxPoint() : Super() {}
+    gfxPoint(gfxFloat aX, gfxFloat aY) : Super(aX, aY) {}
+    gfxPoint(const nsIntPoint& aPoint) : Super(aPoint.x, aPoint.y) {}
+
+    bool WithinEpsilonOf(const gfxPoint& aPoint, gfxFloat aEpsilon) {
+        return fabs(aPoint.x - x) < aEpsilon && fabs(aPoint.y - y) < aEpsilon;
+    }
+};
+
+inline gfxPoint
+operator*(const gfxPoint& aPoint, const gfxSize& aSize)
+{
+  return gfxPoint(aPoint.x * aSize.width, aPoint.y * aSize.height);
+}
+
+inline gfxPoint
+operator/(const gfxPoint& aPoint, const gfxSize& aSize)
+{
+  return gfxPoint(aPoint.x / aSize.width, aPoint.y / aSize.height);
+}
+
+inline gfxSize
+operator/(gfxFloat aValue, const gfxSize& aSize)
+{
+  return gfxSize(aValue / aSize.width, aValue / aSize.height);
+}
+
+#endif /* GFX_POINT_H */