diff -r 000000000000 -r 6474c204b198 gfx/thebes/gfxQtNativeRenderer.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/thebes/gfxQtNativeRenderer.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* -*- 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 "gfxQtNativeRenderer.h"
+#include "gfxContext.h"
+#include "gfxXlibSurface.h"
+
+nsresult
+gfxQtNativeRenderer::Draw(gfxContext* ctx, nsIntSize size,
+                          uint32_t flags, Screen* screen, Visual* visual)
+{
+    Display *dpy = DisplayOfScreen(screen);
+    bool isOpaque = (flags & DRAW_IS_OPAQUE) ? true : false;
+    int screenNumber = screen - ScreenOfDisplay(dpy, 0);
+
+    if (!isOpaque) {
+        int depth = 32;
+        XVisualInfo vinfo;
+        int foundVisual = XMatchVisualInfo(dpy, screenNumber,
+                                           depth, TrueColor,
+                                           &vinfo);
+        if (!foundVisual)
+            return NS_ERROR_FAILURE;
+
+        visual = vinfo.visual;
+    }
+
+    nsRefPtr<gfxXlibSurface> xsurf =
+        gfxXlibSurface::Create(screen, visual,
+                               gfxIntSize(size.width, size.height));
+
+    if (!isOpaque) {
+        nsRefPtr<gfxContext> tempCtx = new gfxContext(xsurf);
+        tempCtx->SetOperator(gfxContext::OPERATOR_CLEAR);
+        tempCtx->Paint();
+    }
+
+    nsresult rv = DrawWithXlib(xsurf->CairoSurface(), nsIntPoint(0, 0), nullptr, 0);
+
+    if (NS_FAILED(rv))
+        return rv;
+
+    ctx->SetSource(xsurf);
+    ctx->Paint();
+
+    return rv;
+}