Sibling invalidation sets

Source/core/css/invalidation/InvalidationData.h

Index: Source/core/css/invalidation/InvalidationData.h
diff --git a/Source/core/css/invalidation/InvalidationData.h b/Source/core/css/invalidation/InvalidationData.h
new file mode 100644
index 0000000000000000000000000000000000000000..018802a35602310a60c9ddf48c4234f2908857e1
--- /dev/null
+++ b/Source/core/css/invalidation/InvalidationData.h
@@ -0,0 +1,48 @@
+// 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 {
+
+enum InvalidationType {
+    InvalidateDescendants = 0,

[rune, 2015/09/14 23:06:51]

Enums start from 0 if you don't specify. Just drop all enum value assignments.

[Eric Willigers, 2015/09/15 05:39:17]

Done.

+    InvalidateSiblings = 1,
+    InvalidationTypeCount = 2
+};
+
+class CORE_EXPORT InvalidationData final : public RefCountedWillBeGarbageCollected<InvalidationData> {
+    WTF_MAKE_NONCOPYABLE(InvalidationData);
+public:
+    static PassRefPtrWillBeRawPtr<InvalidationData> create()
+    {
+        return adoptRefWillBeNoop(new InvalidationData);
+    }
+
+    void combine(const InvalidationData& other);
+
+    PassRefPtrWillBeRawPtr<InvalidationSet> descendants() { return m_invalidationSet[InvalidateDescendants]; }
+    PassRefPtrWillBeRawPtr<InvalidationSet> siblings() { return m_invalidationSet[InvalidateSiblings]; }
+
+    const InvalidationSet* descendants() const { return m_invalidationSet[InvalidateDescendants].get(); }
+    const InvalidationSet* siblings() const { return m_invalidationSet[InvalidateSiblings].get(); }
+
+    PassRefPtrWillBeRawPtr<InvalidationSet> select(InvalidationType type) { return m_invalidationSet[type]; }
+
+    InvalidationSet& ensureInvalidationSet(InvalidationType);
+
+    DECLARE_TRACE();
+
+private:
+    InvalidationData() {}
+
+    RefPtrWillBeMember<InvalidationSet> m_invalidationSet[InvalidationTypeCount];
+};
+
+} // namespace blink
+
+#endif // InvalidationData_h