Fix painting background for composited table cells in a non-composited row.

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
  * modify it under the terms of the GNU Library General Public
@@ skipping 286 matching lines @@
     LayoutRect visualRect() const;
 
    private:
     const LayoutTable& m_layoutTable;
     CollapsedBorderValue m_startBorder;
     CollapsedBorderValue m_endBorder;
     CollapsedBorderValue m_beforeBorder;
     CollapsedBorderValue m_afterBorder;
   };
 
-  bool usesTableAsAdditionalDisplayItemClient() const;
+  class RowBackgroundDisplayItemClient : public DisplayItemClient {
+   public:
+    RowBackgroundDisplayItemClient(const LayoutTableRow&);
+
+    // DisplayItemClient methods.
+    String debugName() const;
+    LayoutRect visualRect() const;
+
+   private:
+    const LayoutTableRow& m_layoutTableRow;
+  };
+
+  bool usesCompositedCellDisplayItemClients() const;
   const CollapsedBorderValues* collapsedBorderValues() const {
     return m_collapsedBorderValues.get();
   }
+  const DisplayItemClient& backgroundDisplayItemClient() const {
+    return m_rowBackgroundDisplayItemClient
+               ? static_cast<const DisplayItemClient&>(
+                     *m_rowBackgroundDisplayItemClient)
+               : *this;
+  }
 
   LayoutRect debugRect() const override;
 
   void adjustChildDebugRect(LayoutRect&) const override;
 
   // A table cell's location is relative to its containing section.
   LayoutBox* locationContainer() const override { return section(); }
 
+  void ensureIsReadyForPaintInvalidation() override;
+
  protected:
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
   void computePreferredLogicalWidths() override;
 
   void addLayerHitTestRects(LayerHitTestRects&,
                             const PaintLayer* currentCompositedLayer,
                             const LayoutPoint& layerOffset,
                             const LayoutRect& containerRect) const override;
 
  private:
@@ skipping 82 matching lines @@
 
   // The intrinsic padding.
   // See class comment for what they are.
   //
   // Note: Those fields are using non-subpixel units (int)
   // because we don't do fractional arithmetic on tables.
   int m_intrinsicPaddingBefore;
   int m_intrinsicPaddingAfter;
 
   std::unique_ptr<CollapsedBorderValues> m_collapsedBorderValues;
+  std::unique_ptr<RowBackgroundDisplayItemClient>
+      m_rowBackgroundDisplayItemClient;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTableCell, isTableCell());
 
 inline LayoutTableCell* LayoutTableCell::previousCell() const {
   return toLayoutTableCell(LayoutObject::previousSibling());
 }
 
 inline LayoutTableCell* LayoutTableCell::nextCell() const {
   return toLayoutTableCell(LayoutObject::nextSibling());
 }
 
 inline LayoutTableCell* LayoutTableRow::firstCell() const {
   return toLayoutTableCell(firstChild());
 }
 
 inline LayoutTableCell* LayoutTableRow::lastCell() const {
   return toLayoutTableCell(lastChild());
 }
 
 }  // namespace blink
 
 #endif  // LayoutTableCell_h