List marker pseudo elements.

Source/core/dom/MarkerPseudoElement.h

Index: Source/core/dom/MarkerPseudoElement.h
diff --git a/Source/core/dom/MarkerPseudoElement.h b/Source/core/dom/MarkerPseudoElement.h
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index 0000000000000000000000000000000000000000..581e68fd0624c43870cd5cb5906a0f4d336e71f0
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+++ b/Source/core/dom/MarkerPseudoElement.h
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+// 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 MarkerPseudoElement_h
+#define MarkerPseudoElement_h
+
+#include "core/dom/PseudoElement.h"
+
+namespace blink {
+
+class LayoutBlockFlow;
+class LayoutListMarker;
+
+class MarkerPseudoElement final : public PseudoElement {
+    WTF_MAKE_NONCOPYABLE(MarkerPseudoElement);
+public:
+    static PassRefPtrWillBeRawPtr<MarkerPseudoElement> create(Element* parent)
+    {
+        return adoptRefWillBeNoop(new MarkerPseudoElement(parent));
+    }
+
+    virtual ~MarkerPseudoElement();
+
+    void attach(const AttachContext& = AttachContext()) override;
+
+    LayoutObject* createLayoutObject(const ComputedStyle&) override;
+
+    // FIXME: Make these private and file static when old code is removed.
+    static LayoutObject* parentOfFirstLineBox(LayoutObject* curr, const LayoutObject* marker);
+    static LayoutObject* firstNonMarkerChild(LayoutObject* parent);
+
+    static PassRefPtr<ComputedStyle> styleForListMarker(LayoutObject&, const ComputedStyle*);
+
+    void attachListMarker();
+
+private:
+    explicit MarkerPseudoElement(Element*);
+
+    void didRecalcStyle(StyleRecalcChange) override;
+};
+
+DEFINE_ELEMENT_TYPE_CASTS(MarkerPseudoElement, isMarkerPseudoElement());
+
+} // namespace blink
+
+#endif // MarkerPseudoElement_h