1 files changed, 12 insertions, 0 deletions
diff --git a/components/script/dom/webidls/CSS.webidl b/components/script/dom/webidls/CSS.webidl
new file mode 100644
index 00000000000..59832c0af15
--- /dev/null
+++ b/components/script/dom/webidls/CSS.webidl
@@ -0,0 +1,12 @@
+/* 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://dev.w3.org/csswg/cssom/#the-css-interface
+ */
+
+interface CSS {
+  [Throws]
+  static DOMString escape(DOMString ident);
+};