diff -r 000000000000 -r 6474c204b198 gfx/src/nsMargin.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/src/nsMargin.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/* -*- 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 NSMARGIN_H
+#define NSMARGIN_H
+
+#include "nsCoord.h"
+#include "nsPoint.h"
+#include "gfxCore.h"
+#include "mozilla/gfx/BaseMargin.h"
+
+struct nsMargin : public mozilla::gfx::BaseMargin<nscoord, nsMargin> {
+  typedef mozilla::gfx::BaseMargin<nscoord, nsMargin> Super;
+
+  // Constructors
+  nsMargin() : Super() {}
+  nsMargin(const nsMargin& aMargin) : Super(aMargin) {}
+  nsMargin(nscoord aTop, nscoord aRight, nscoord aBottom, nscoord aLeft)
+    : Super(aTop, aRight, aBottom, aLeft) {}
+};
+
+struct nsIntMargin : public mozilla::gfx::BaseMargin<int32_t, nsIntMargin> {
+  typedef mozilla::gfx::BaseMargin<int32_t, nsIntMargin> Super;
+
+  // Constructors
+  nsIntMargin() : Super() {}
+  nsIntMargin(const nsIntMargin& aMargin) : Super(aMargin) {}
+  nsIntMargin(int32_t aTop, int32_t aRight, int32_t aBottom, int32_t aLeft)
+    : Super(aTop, aRight, aBottom, aLeft) {}
+};
+
+#endif /* NSMARGIN_H */