diff -r 000000000000 -r 6474c204b198 dom/interfaces/css/nsIDOMCSSValue.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/css/nsIDOMCSSValue.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,29 @@
+/* -*- 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/. */
+
+#include "domstubs.idl"
+
+/**
+ * The nsIDOMCSSValue interface is a datatype for a CSS value in the
+ * Document Object Model.
+ *
+ * For more information on this interface please see
+ * http://www.w3.org/TR/DOM-Level-2-Style
+ */
+
+[scriptable, uuid(009f7ea5-9e80-41be-b008-db62f10823f2)]
+interface nsIDOMCSSValue : nsISupports
+{
+  // UnitTypes
+  const unsigned short      CSS_INHERIT                    = 0;
+  const unsigned short      CSS_PRIMITIVE_VALUE            = 1;
+  const unsigned short      CSS_VALUE_LIST                 = 2;
+  const unsigned short      CSS_CUSTOM                     = 3;
+
+           attribute DOMString        cssText;
+                                        // raises(DOMException) on setting
+
+  readonly attribute unsigned short   cssValueType;
+};