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

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

Index: third_party/WebKit/Source/core/layout/LayoutTableCell.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableCell.h b/third_party/WebKit/Source/core/layout/LayoutTableCell.h
index 8bef7580909d16d59fd2bbeef077200fba0a722a..c64227689e9b038702f3da937fd2d9cfe81b92b0 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableCell.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTableCell.h
@@ -304,10 +304,28 @@ class CORE_EXPORT LayoutTableCell final : public LayoutBlockFlow {
     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;
 
@@ -316,6 +334,8 @@ class CORE_EXPORT LayoutTableCell final : public LayoutBlockFlow {
   // 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;
@@ -418,6 +438,8 @@ class CORE_EXPORT LayoutTableCell final : public LayoutBlockFlow {
   int m_intrinsicPaddingAfter;
 
   std::unique_ptr<CollapsedBorderValues> m_collapsedBorderValues;
+  std::unique_ptr<RowBackgroundDisplayItemClient>
+      m_rowBackgroundDisplayItemClient;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTableCell, isTableCell());