Move paint code from RenderListMarker/RenderListItem to ListMarkerPainter/ListItemPainter.

Source/core/paint/ListItemPainter.cpp

+// Copyright 2014 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.
+
+#include "config.h"
+#include "core/paint/ListItemPainter.h"
+
+#include "core/paint/BlockPainter.h"
+#include "core/rendering/PaintInfo.h"
+#include "core/rendering/RenderListItem.h"
+#include "platform/geometry/LayoutPoint.h"
+
+namespace blink {
+
+void ListItemPainter::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
+{
+    if (!m_renderListItem.logicalHeight() && m_renderListItem.hasOverflowClip())
+        return;
+
+    BlockPainter(m_renderListItem).paint(paintInfo, paintOffset);
+}
+
+} // namespace blink