diff -r 000000000000 -r 6474c204b198 dom/webidl/SVGLength.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/SVGLength.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,40 @@
+/* -*- Mode: IDL; 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/.
+ *
+ * The origin of this IDL file is
+ * http://www.w3.org/TR/SVG2/
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+interface SVGLength {
+
+  // Length Unit Types
+  const unsigned short SVG_LENGTHTYPE_UNKNOWN = 0;
+  const unsigned short SVG_LENGTHTYPE_NUMBER = 1;
+  const unsigned short SVG_LENGTHTYPE_PERCENTAGE = 2;
+  const unsigned short SVG_LENGTHTYPE_EMS = 3;
+  const unsigned short SVG_LENGTHTYPE_EXS = 4;
+  const unsigned short SVG_LENGTHTYPE_PX = 5;
+  const unsigned short SVG_LENGTHTYPE_CM = 6;
+  const unsigned short SVG_LENGTHTYPE_MM = 7;
+  const unsigned short SVG_LENGTHTYPE_IN = 8;
+  const unsigned short SVG_LENGTHTYPE_PT = 9;
+  const unsigned short SVG_LENGTHTYPE_PC = 10;
+
+  readonly attribute unsigned short unitType;
+  [Throws]
+           attribute float value;
+  [SetterThrows]
+           attribute float valueInSpecifiedUnits;
+  [SetterThrows]
+           attribute DOMString valueAsString;
+
+  [Throws]
+  void newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits);
+  [Throws]
+  void convertToSpecifiedUnits(unsigned short unitType);
+};