diff -r 000000000000 -r 6474c204b198 layout/svg/nsSVGFilterPaintCallback.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/svg/nsSVGFilterPaintCallback.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- 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 __NS_SVGFILTERPAINTCALLBACK_H__
+#define __NS_SVGFILTERPAINTCALLBACK_H__
+
+class nsIFrame;
+class nsRenderingContext;
+
+struct nsIntRect;
+
+class nsSVGFilterPaintCallback {
+public:
+  /**
+   * Paint the frame contents.
+   * SVG frames will have had matrix propagation set to false already.
+   * Non-SVG frames have to do their own thing.
+   * The caller will do a Save()/Restore() as necessary so feel free
+   * to mess with context state.
+   * The context will be configured to use the "user space" coordinate
+   * system.
+   * @param aDirtyRect the dirty rect *in user space pixels*
+   * @param aTransformRoot the outermost frame whose transform should be taken
+   *                       into account when painting an SVG glyph
+   */
+  virtual void Paint(nsRenderingContext *aContext, nsIFrame *aTarget,
+                     const nsIntRect *aDirtyRect,
+                     nsIFrame* aTransformRoot) = 0;
+};
+
+#endif