Replace LayoutTableCell::AbsoluteColumnIndex() with EffectiveColumnIndex()

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 8ff2023691d2d66cbccff14fe388ccd92f8bac9f..048b27d66d4ee7959aaea7fb3e203c5641567858 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableSection.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTableSection.h
@@ -192,7 +192,9 @@ class CORE_EXPORT LayoutTableSection final : public LayoutTableBoxComponent {
         row, effective_column);
   }
 
-  unsigned NumCols(unsigned row) const { return grid_[row].grid_cells.size(); }
+  unsigned NumEffectiveColumns(unsigned row) const {
+    return grid_[row].grid_cells.size();
+  }
 
   // Returns null for cells with a rowspan that exceed the last row. Possibly
   // others.
@@ -219,7 +221,8 @@ class CORE_EXPORT LayoutTableSection final : public LayoutTableBoxComponent {
     DCHECK(!NeedsCellRecalc());
     return grid_.size();
   }
-  unsigned NumEffectiveColumns() const;
+  // This is slow. Use Table()->NumEffectiveColumns() instead if possible.
+  unsigned MaxNumEffectiveColumnsOfRows() const;
 
   // recalcCells() is used when we are not sure about the section's structure
   // and want to do an expensive (but safe) reconstruction of m_grid from
@@ -328,7 +331,7 @@ class CORE_EXPORT LayoutTableSection final : public LayoutTableBoxComponent {
   }
 
   void EnsureCols(unsigned row_index, unsigned num_cols) {
-    if (num_cols > this->NumCols(row_index))
+    if (num_cols > grid_[row_index].grid_cells.size())
       grid_[row_index].grid_cells.Grow(num_cols);
   }