[CSS Grid Layout] Do not stretch always grid items with auto width

Source/core/layout/LayoutGrid.h

Index: Source/core/layout/LayoutGrid.h
diff --git a/Source/core/layout/LayoutGrid.h b/Source/core/layout/LayoutGrid.h
index 0a50e9c3763348c7ed68f6a273f16c398803aee3..74276bbfb2eee0c9561bec63b66770e0bc25c727 100644
--- a/Source/core/layout/LayoutGrid.h
+++ b/Source/core/layout/LayoutGrid.h
@@ -154,7 +154,8 @@ private:
     LayoutUnit gridAreaBreadthForChild(const LayoutBox& child, GridTrackSizingDirection, const Vector<GridTrack>&) const;
 
     virtual void paintChildren(const PaintInfo&, const LayoutPoint&) override;
-    bool allowedToStretchLogicalHeightForChild(const LayoutBox& child) const;
+    bool allowedToStretchLogicalHeightForChild(const LayoutBox&) const;
+    bool allowedToStretchLogicalWidthForChild(const LayoutBox&) const;
     bool needToStretchChildLogicalHeight(const LayoutBox&) const;
     LayoutUnit childIntrinsicHeight(const LayoutBox&) const;
     LayoutUnit childIntrinsicWidth(const LayoutBox&) const;
@@ -162,7 +163,7 @@ private:
     LayoutUnit marginLogicalHeightForChild(const LayoutBox&) const;
     LayoutUnit computeMarginLogicalHeightForChild(const LayoutBox&) const;
     LayoutUnit availableAlignmentSpaceForChildBeforeStretching(LayoutUnit gridAreaBreadthForChild, const LayoutBox&) const;
-    void applyStretchAlignmentToChildIfNeeded(LayoutBox&, LayoutUnit gridAreaBreadthForChild);
+    void applyStretchAlignmentToChildIfNeeded(LayoutBox&);
 
 #if ENABLE(ASSERT)
     bool tracksAreWiderThanMinTrackBreadth(GridTrackSizingDirection, const Vector<GridTrack>&);