diff -r 000000000000 -r 6474c204b198 widget/gtk/nsImageToPixbuf.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/gtk/nsImageToPixbuf.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,46 @@
+/* vim:set sw=4 sts=4 et cin: */
+/* 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 NSIMAGETOPIXBUF_H_
+#define NSIMAGETOPIXBUF_H_
+
+#include "nsIImageToPixbuf.h"
+#include "mozilla/Attributes.h"
+
+namespace mozilla {
+namespace gfx {
+class SourceSurface;
+}
+}
+
+class nsImageToPixbuf MOZ_FINAL : public nsIImageToPixbuf {
+    typedef mozilla::gfx::SourceSurface SourceSurface;
+
+    public:
+        NS_DECL_ISUPPORTS
+        NS_IMETHOD_(GdkPixbuf*) ConvertImageToPixbuf(imgIContainer* aImage);
+
+        // Friendlier version of ConvertImageToPixbuf for callers inside of
+        // widget
+        /**
+         * The return value of all these, if not null, should be
+         * released as needed by the caller using g_object_unref.
+         */
+        static GdkPixbuf* ImageToPixbuf(imgIContainer * aImage);
+        static GdkPixbuf* SourceSurfaceToPixbuf(SourceSurface* aSurface,
+                                                int32_t aWidth,
+                                                int32_t aHeight);
+
+    private:
+        ~nsImageToPixbuf() {}
+};
+
+
+// fc2389b8-c650-4093-9e42-b05e5f0685b7
+#define NS_IMAGE_TO_PIXBUF_CID \
+{ 0xfc2389b8, 0xc650, 0x4093, \
+  { 0x9e, 0x42, 0xb0, 0x5e, 0x5f, 0x06, 0x85, 0xb7 } }
+
+#endif