1 files changed, 19 insertions, 0 deletions
diff --git a/dom/webidl/StyleRuleChangeEvent.webidl b/dom/webidl/StyleRuleChangeEvent.webidl
new file mode 100644
index 000000000..0b783366b
--- /dev/null
+++ b/dom/webidl/StyleRuleChangeEvent.webidl
@@ -0,0 +1,19 @@
+/* -*- 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/.
+ */
+interface CSSRule;
+
+[ChromeOnly, Constructor(DOMString type, optional StyleRuleChangeEventInit eventInitDict)]
+interface StyleRuleChangeEvent : Event
+{
+  readonly attribute CSSStyleSheet? stylesheet;
+  readonly attribute CSSRule? rule;
+};
+
+dictionary StyleRuleChangeEventInit : EventInit
+{
+  CSSStyleSheet? stylesheet = null;
+  CSSRule? rule = null;
+};