third_party/blink/renderer/core/css/css_grouping_rule.idl

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://drafts.csswg.org/cssom/#the-cssgroupingrule-interface

[
    Exposed=Window
] interface CSSGroupingRule : CSSRule {
    [SameObject] readonly attribute CSSRuleList cssRules;
    [RaisesException, CallWith=ExecutionContext] unsigned long insertRule(DOMString rule, unsigned long index);
    [RaisesException] void deleteRule(unsigned long index);
};