1 files changed, 54 insertions, 0 deletions
diff --git a/layout/style/CSSStartingStyleRule.h b/layout/style/CSSStartingStyleRule.h
new file mode 100644
index 0000000000..9ecccf505c
--- /dev/null
+++ b/layout/style/CSSStartingStyleRule.h
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef CSSStaringStyleRule_h___
+#define CSSStaringStyleRule_h___
+
+#include "mozilla/css/GroupRule.h"
+#include "mozilla/ServoBindingTypes.h"
+
+namespace mozilla::dom {
+
+class CSSStartingStyleRule final : public css::GroupRule {
+ public:
+  CSSStartingStyleRule(RefPtr<StyleStartingStyleRule> aRawRule,
+                       StyleSheet* aSheet, css::Rule* aParentRule,
+                       uint32_t aLine, uint32_t aColumn)
+      : css::GroupRule(aSheet, aParentRule, aLine, aColumn),
+        mRawRule(std::move(aRawRule)) {}
+
+  NS_DECL_ISUPPORTS_INHERITED
+
+#ifdef DEBUG
+  void List(FILE* out = stdout, int32_t aIndent = 0) const final;
+#endif
+
+  StyleStartingStyleRule* Raw() const { return mRawRule; }
+  void SetRawAfterClone(RefPtr<StyleStartingStyleRule> aRaw) {
+    mRawRule = std::move(aRaw);
+    css::GroupRule::DidSetRawAfterClone();
+  }
+
+  already_AddRefed<StyleLockedCssRules> GetOrCreateRawRules() final;
+
+  // WebIDL interface
+  StyleCssRuleType Type() const final;
+  void GetCssText(nsACString& aCssText) const final;
+
+  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override {
+    return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+  }
+  JSObject* WrapObject(JSContext*, JS::Handle<JSObject*>) override;
+
+ private:
+  ~CSSStartingStyleRule() = default;
+
+  RefPtr<StyleStartingStyleRule> mRawRule;
+};
+
+}  // namespace mozilla::dom
+
+#endif