1 files changed, 48 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/css/css_property_rule.h b/chromium/third_party/blink/renderer/core/css/css_property_rule.h
new file mode 100644
index 00000000000..e977bb35fdc
--- /dev/null
+++ b/chromium/third_party/blink/renderer/core/css/css_property_rule.h
@@ -0,0 +1,48 @@
+// Copyright 2019 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.
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_PROPERTY_RULE_H_
+#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_PROPERTY_RULE_H_
+
+#include "third_party/blink/renderer/core/css/css_rule.h"
+#include "third_party/blink/renderer/platform/heap/handle.h"
+#include "third_party/blink/renderer/platform/wtf/casting.h"
+
+namespace blink {
+
+class CSSStyleDeclaration;
+class StyleRuleProperty;
+class StyleRuleCSSStyleDeclaration;
+
+class CSSPropertyRule final : public CSSRule {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  CSSPropertyRule(StyleRuleProperty*, CSSStyleSheet*);
+  ~CSSPropertyRule() override;
+
+  String cssText() const override;
+  void Reattach(StyleRuleBase*) override;
+
+  CSSStyleDeclaration* style() const;
+
+  void Trace(blink::Visitor*) override;
+
+ private:
+  CSSRule::Type type() const override { return kPropertyRule; }
+
+  Member<StyleRuleProperty> property_rule_;
+  mutable Member<StyleRuleCSSStyleDeclaration> properties_cssom_wrapper_;
+};
+
+template <>
+struct DowncastTraits<CSSPropertyRule> {
+  static bool AllowFrom(const CSSRule& rule) {
+    return rule.type() == CSSRule::kPropertyRule;
+  }
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_PROPERTY_RULE_H_