Reland of Paint collapsed borders of a table as one display item

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

Index: third_party/WebKit/Source/core/layout/LayoutTableSection.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableSection.h b/third_party/WebKit/Source/core/layout/LayoutTableSection.h
index 5c0b9f709abc48d4a51a338860def83cb4f00e89..6c82c3ad636b143ac072101362950aa8f60942a8 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableSection.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTableSection.h
@@ -56,6 +56,13 @@
   unsigned m_start;
   unsigned m_end;
 };
+
+inline bool operator==(const CellSpan& a, const CellSpan& b) {
+  return a.start() == b.start() && a.end() == b.end();
+}
+inline bool operator!=(const CellSpan& a, const CellSpan& b) {
+  return !(a == b);
+}
 
 class LayoutTableCell;
 class LayoutTableRow;
@@ -296,8 +303,13 @@
   // columnPos vectors.
   LayoutRect logicalRectForWritingModeAndDirection(const LayoutRect&) const;
 
+  CellSpan fullTableRowSpan() const { return CellSpan(0, m_grid.size()); }
+  CellSpan fullTableEffectiveColumnSpan() const {
+    return CellSpan(0, table()->numEffectiveColumns());
+  }
   CellSpan dirtiedRows(const LayoutRect& visualRect) const;
   CellSpan dirtiedEffectiveColumns(const LayoutRect& visualRect) const;
+
   const HashSet<LayoutTableCell*>& overflowingCells() const {
     return m_overflowingCells;
   }
@@ -401,11 +413,6 @@
 
   void computeOverflowFromCells(unsigned totalRows, unsigned nEffCols);
 
-  CellSpan fullTableRowSpan() const { return CellSpan(0, m_grid.size()); }
-  CellSpan fullTableEffectiveColumnSpan() const {
-    return CellSpan(0, table()->numEffectiveColumns());
-  }
-
   // These two functions take a rectangle as input that has been flipped by
   // logicalRectForWritingModeAndDirection.
   // The returned span of rows or columns is end-exclusive, and empty if