diff -r 000000000000 -r 6474c204b198 layout/svg/nsISVGSVGFrame.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/svg/nsISVGSVGFrame.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+/* -*- 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_ISVGSVGFRAME_H__
+#define __NS_ISVGSVGFRAME_H__
+
+#include "nsQueryFrame.h"
+
+class nsISVGSVGFrame
+{
+public:
+  NS_DECL_QUERYFRAME_TARGET(nsISVGSVGFrame)
+
+  /**
+   * Called when non-attribute changes have caused the element's width/height
+   * or its for-children transform to change, and to get the element to notify
+   * its children appropriately. aFlags must be set to
+   * nsISVGChildFrame::COORD_CONTEXT_CHANGED and/or
+   * nsISVGChildFrame::TRANSFORM_CHANGED.
+   */
+  virtual void NotifyViewportOrTransformChanged(uint32_t aFlags)=0; 
+};
+
+#endif // __NS_ISVGSVGFRAME_H__