Display table header groups at the top of each page

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

Index: third_party/WebKit/Source/core/paint/TableSectionPainter.h
diff --git a/third_party/WebKit/Source/core/paint/TableSectionPainter.h b/third_party/WebKit/Source/core/paint/TableSectionPainter.h
index 483c68b2f32f867259525df93f59513c0eec725e..91ddd39480fb9279394a00713fdce0d779c3f8b9 100644
--- a/third_party/WebKit/Source/core/paint/TableSectionPainter.h
+++ b/third_party/WebKit/Source/core/paint/TableSectionPainter.h
@@ -13,6 +13,7 @@ namespace blink {
 
 class CellSpan;
 class CollapsedBorderValue;
+class LayoutBox;
 class LayoutPoint;
 class LayoutTableCell;
 class LayoutTableSection;
@@ -38,6 +39,14 @@ private:
     // dirtiedRows and dirtiedColumns.
     const LayoutTableCell* primaryCellToPaint(unsigned row, unsigned column, const CellSpan& dirtiedRows, const CellSpan& dirtiedColumns) const;
 
+    enum ItemToPaint {
+        PaintCollapsedBorders,
+        PaintChild

[Xianzhu, 2016/06/03 18:45:41]

Nit: Also rename this to PaintSection.

+    };
+    void paintRepeatingHeaderGroup(const PaintInfo&, const LayoutPoint& paintOffset, const CollapsedBorderValue& currentBorderValue, ItemToPaint);
+    void paintSection(const PaintInfo&, const LayoutPoint&);
+    void paintCollapsedSectionBorders(const PaintInfo&, const LayoutPoint&, const CollapsedBorderValue&);
+
     const LayoutTableSection& m_layoutTableSection;
 };