Let table row and section's self visual overflow cover whole collapsed borders

third_party/WebKit/Source/core/layout/LayoutTableCell.h

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2013 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 299 matching lines @@
     const CollapsedBorderValue& EndBorder() const { return end_border_; }
     const CollapsedBorderValue& BeforeBorder() const { return before_border_; }
     const CollapsedBorderValue& AfterBorder() const { return after_border_; }
 
     void SetCollapsedBorderValues(const CollapsedBorderValues& other);
 
     // DisplayItemClient methods.
     String DebugName() const;
     LayoutRect VisualRect() const;
 
+    LayoutRect LocalVisualRect() const { return local_visual_rect_; }
+    void SetLocalVisualRect(const LayoutRect& r) { local_visual_rect_ = r; }
+
    private:
     const LayoutTableCell& layout_table_cell_;
     CollapsedBorderValue start_border_;
     CollapsedBorderValue end_border_;
     CollapsedBorderValue before_border_;
     CollapsedBorderValue after_border_;
+    LayoutRect local_visual_rect_;
   };
 
   bool UsesCompositedCellDisplayItemClients() const;
   const CollapsedBorderValues* GetCollapsedBorderValues() const {
-    DCHECK(collapsed_border_values_valid_);
+    UpdateCollapsedBorderValues();
     return collapsed_border_values_.get();
   }
   void InvalidateCollapsedBorderValues() {
     collapsed_border_values_valid_ = false;
   }
 
   LayoutRect DebugRect() const override;
 
   void AdjustChildDebugRect(LayoutRect&) const override;
 
@@ skipping 23 matching lines @@
 
   void WillBeRemovedFromTree() override;
 
   void UpdateLogicalWidth() override;
 
   void PaintBoxDecorationBackground(const PaintInfo&,
                                     const LayoutPoint&) const override;
   void PaintMask(const PaintInfo&, const LayoutPoint&) const override;
 
   LayoutSize OffsetFromContainer(const LayoutObject*) const override;
+
+  void ComputeOverflow(LayoutUnit old_client_after_edge,
+                       bool recompute_floats = false) override;
   LayoutRect LocalVisualRect() const override;
 
   LayoutUnit CollapsedBorderHalfLeft(bool outer) const;
   LayoutUnit CollapsedBorderHalfRight(bool outer) const;
   LayoutUnit CollapsedBorderHalfTop(bool outer) const;
   LayoutUnit CollapsedBorderHalfBottom(bool outer) const;
 
   LayoutUnit CollapsedBorderHalfStart(bool outer) const;
   LayoutUnit CollapsedBorderHalfEnd(bool outer) const;
   LayoutUnit CollapsedBorderHalfBefore(bool outer) const;
@@ skipping 87 matching lines @@
   return ToLayoutTableCell(FirstChild());
 }
 
 inline LayoutTableCell* LayoutTableRow::LastCell() const {
   return ToLayoutTableCell(LastChild());
 }
 
 }  // namespace blink
 
 #endif  // LayoutTableCell_h