diff -r 000000000000 -r 6474c204b198 gfx/thebes/gfxTeeSurface.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/thebes/gfxTeeSurface.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* -*- 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_TEESURFACE_H
+#define GFX_TEESURFACE_H
+
+#include "gfxASurface.h"
+#include "nsTArrayForwardDeclare.h"
+#include "nsSize.h"
+
+template<class T> class nsRefPtr;
+
+/**
+ * Wraps a cairo_tee_surface. The first surface in the surface list is the
+ * primary surface, which answers all surface queries (including size).
+ * All drawing is performed on all the surfaces.
+ *
+ * The device transform of a tee surface is applied before drawing to the
+ * underlying surfaces --- which also applies the device transforms of the
+ * underlying surfaces.
+ */
+class gfxTeeSurface : public gfxASurface {
+public:
+    gfxTeeSurface(cairo_surface_t *csurf);
+    gfxTeeSurface(gfxASurface **aSurfaces, int32_t aSurfaceCount);
+
+    virtual const gfxIntSize GetSize() const;
+
+    /**
+     * Returns the list of underlying surfaces.
+     */
+    void GetSurfaces(nsTArray<nsRefPtr<gfxASurface> > *aSurfaces);
+};
+
+#endif /* GFX_TEESURFACE_H */