diff -r 000000000000 -r 6474c204b198 gfx/thebes/gfxTeeSurface.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/thebes/gfxTeeSurface.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* -*- 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/. */
+
+#include "gfxTeeSurface.h"
+#include "nsAutoPtr.h"
+#include "nsTArray.h"
+
+#include "cairo-tee.h"
+
+gfxTeeSurface::gfxTeeSurface(cairo_surface_t *csurf)
+{
+    Init(csurf, true);
+}
+
+gfxTeeSurface::gfxTeeSurface(gfxASurface **aSurfaces, int32_t aSurfaceCount)
+{
+    NS_ASSERTION(aSurfaceCount > 0, "Must have a least one surface");
+    cairo_surface_t *csurf = cairo_tee_surface_create(aSurfaces[0]->CairoSurface());
+    Init(csurf, false);
+
+    for (int32_t i = 1; i < aSurfaceCount; ++i) {
+        cairo_tee_surface_add(csurf, aSurfaces[i]->CairoSurface());
+    }
+}
+
+const gfxIntSize
+gfxTeeSurface::GetSize() const
+{
+    nsRefPtr<gfxASurface> master = Wrap(cairo_tee_surface_index(mSurface, 0));
+    return master->GetSize();
+}
+
+void
+gfxTeeSurface::GetSurfaces(nsTArray<nsRefPtr<gfxASurface> >* aSurfaces)
+{
+    for (int32_t i = 0; ; ++i) {
+        cairo_surface_t *csurf = cairo_tee_surface_index(mSurface, i);
+        if (cairo_surface_status(csurf))
+            break;
+        nsRefPtr<gfxASurface> *elem = aSurfaces->AppendElement();
+        if (!elem)
+            return;
+        *elem = Wrap(csurf);
+    }
+}