Made varied number of cells in each row based on row's requirement.

third_party/WebKit/Source/core/layout/LayoutTable.cpp

Index: third_party/WebKit/Source/core/layout/LayoutTable.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTable.cpp b/third_party/WebKit/Source/core/layout/LayoutTable.cpp
index a174e715635a4b59f6ae79ab9f2c5c4da7e15f1f..fbcca36daed954a685c6ff9347f3863df2f2e9ad 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTable.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTable.cpp
@@ -1445,8 +1445,7 @@ LayoutTableCell* LayoutTable::cellAbove(const LayoutTableCell* cell) const {
   if (section) {
     unsigned effCol =
         absoluteColumnToEffectiveColumn(cell->absoluteColumnIndex());
-    LayoutTableSection::CellStruct& aboveCell = section->cellAt(rAbove, effCol);
-    return aboveCell.primaryCell();
+    return section->primaryCellAt(rAbove, effCol);
   }
   return nullptr;
 }
@@ -1472,8 +1471,7 @@ LayoutTableCell* LayoutTable::cellBelow(const LayoutTableCell* cell) const {
   if (section) {
     unsigned effCol =
         absoluteColumnToEffectiveColumn(cell->absoluteColumnIndex());
-    LayoutTableSection::CellStruct& belowCell = section->cellAt(rBelow, effCol);
-    return belowCell.primaryCell();
+    return section->primaryCellAt(rBelow, effCol);
   }
   return nullptr;
 }
@@ -1498,8 +1496,6 @@ LayoutTableCell* LayoutTable::cellAfter(const LayoutTableCell* cell) const {
 
   unsigned effCol = absoluteColumnToEffectiveColumn(
       cell->absoluteColumnIndex() + cell->colSpan());
-  if (effCol >= numEffectiveColumns())
-    return nullptr;
   return cell->section()->primaryCellAt(cell->rowIndex(), effCol);
 }