Implement box-shadow for table section and row

third_party/WebKit/Source/core/paint/TableCellPainter.h

 // 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.
 
 #ifndef TableCellPainter_h
 #define TableCellPainter_h
 
 #include "core/style/CollapsedBorderValue.h"
 #include "platform/graphics/paint/DisplayItem.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
 struct PaintInfo;
 class CollapsedBorderValue;
 class LayoutPoint;
 class LayoutRect;
 class LayoutTableCell;
 class LayoutObject;
 class ComputedStyle;
 
 class TableCellPainter {
     STACK_ALLOCATED();
 public:
     TableCellPainter(const LayoutTableCell& layoutTableCell) : m_layoutTableCell(layoutTableCell) { }
 
     void paint(const PaintInfo&, const LayoutPoint&);
 
     void paintCollapsedBorders(const PaintInfo&, const LayoutPoint&, const CollapsedBorderValue&);
-    void paintBackgroundsBehindCell(const PaintInfo&, const LayoutPoint&, const LayoutObject* backgroundObject, DisplayItem::Type);
+    void paintContainerBackgroundBehindCell(const PaintInfo&, const LayoutPoint&, const LayoutObject& backgroundObject, DisplayItem::Type);
     void paintBoxDecorationBackground(const PaintInfo&, const LayoutPoint& paintOffset);
     void paintMask(const PaintInfo&, const LayoutPoint& paintOffset);
 
-    enum PaintBoundOffsetBehavior { AddOffsetFromParent, DoNotAddOffsetFromParent };
-    // Returns the bonds of the table cell for painting, offset by paintOffset, and if desired, the offset from the cell
-    // to its parent.
-    LayoutRect paintBounds(const LayoutPoint& paintOffset, PaintBoundOffsetBehavior);
+private:
+    LayoutRect paintRectNotIncludingVisualOverflow(const LayoutPoint& paintOffset);
+    void paintBackground(const PaintInfo&, const LayoutRect&, const LayoutObject& backgroundObject);
 
-private:
     const LayoutTableCell& m_layoutTableCell;
 };
 
 } // namespace blink
 
 #endif // TableCellPainter_h