Sibling invalidation sets

third_party/WebKit/Source/core/css/invalidation/InvalidationData.h

Index: third_party/WebKit/Source/core/css/invalidation/InvalidationData.h
diff --git a/third_party/WebKit/Source/core/css/invalidation/InvalidationData.h b/third_party/WebKit/Source/core/css/invalidation/InvalidationData.h
new file mode 100644
index 0000000000000000000000000000000000000000..3aa026f26ac2837261ba821ae3f4e9879e5f3029
--- /dev/null
+++ b/third_party/WebKit/Source/core/css/invalidation/InvalidationData.h
@@ -0,0 +1,41 @@
+// 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.
+
+#ifndef InvalidationData_h
+#define InvalidationData_h
+
+#include "core/css/invalidation/InvalidationSet.h"
+
+namespace blink {
+
+class CORE_EXPORT InvalidationData final : public RefCounted<InvalidationData> {
+    WTF_MAKE_NONCOPYABLE(InvalidationData);
+public:
+    static PassRefPtr<InvalidationData> create()
+    {
+        return adoptRef(new InvalidationData);
+    }
+
+    void combine(const InvalidationData& other);
+
+    PassRefPtr<DescendantInvalidationSet> descendants() { return m_descendants; }
+    PassRefPtr<SiblingInvalidationSet> siblings() { return m_siblings; }
+
+    const DescendantInvalidationSet* descendants() const { return m_descendants.get(); }
+    const SiblingInvalidationSet* siblings() const { return m_siblings.get(); }
+
+    DescendantInvalidationSet& ensureDescendantInvalidationSet();
+    SiblingInvalidationSet& ensureSiblingInvalidationSet();
+    InvalidationSet& ensureInvalidationSet(InvalidationType);
+
+private:
+    InvalidationData() {}
+
+    RefPtr<DescendantInvalidationSet> m_descendants;
+    RefPtr<SiblingInvalidationSet> m_siblings;
+};
+
+} // namespace blink
+
+#endif // InvalidationData_h