[table] Stretching tables when needed due to self-alignment properties

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

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 76 matching lines @@
     SECURITY_DCHECK(!m_gridIsDirty);
     return m_grid.gridItemPaintOrder(*layoutBox);
   }
 
   size_t autoRepeatCountForDirection(GridTrackSizingDirection direction) const {
     return direction == ForColumns ? m_autoRepeatColumns : m_autoRepeatRows;
   }
 
   LayoutUnit translateRTLCoordinate(LayoutUnit) const;
 
+ protected:
+  ItemPosition selfAlignmentNormalBehavior() const override {
+    return ItemPositionStretch;
+  }
+
  private:
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectLayoutGrid || LayoutBlock::isOfType(type);
   }
   void computeIntrinsicLogicalWidths(
       LayoutUnit& minLogicalWidth,
       LayoutUnit& maxLogicalWidth) const override;
 
   LayoutUnit computeIntrinsicLogicalContentHeightUsing(
       const Length& logicalHeightLength,
@@ skipping 303 matching lines @@
   std::unique_ptr<OrderedTrackIndexSet> m_autoRepeatEmptyRows{nullptr};
 
   Optional<bool> m_hasDefiniteLogicalHeight;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutGrid, isLayoutGrid());
 
 }  // namespace blink
 
 #endif  // LayoutGrid_h