[CSS Grid Layout] Support marking tracks as infinitely growable

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 42 matching lines @@
     const Vector<LayoutUnit>& columnPositions() const { return m_columnPositions; }
     const Vector<LayoutUnit>& rowPositions() const { return m_rowPositions; }
 
     typedef Vector<LayoutBox*, 1> GridCell;
     const GridCell& gridCell(int row, int column) { return m_grid[row][column]; }
     const Vector<LayoutBox*>& itemsOverflowingGridArea() { return m_gridItemsOverflowingGridArea; }
     int paintIndexForGridItem(const LayoutBox* layoutBox) { return m_gridItemsIndexesMap.get(layoutBox); }
 
     bool gridIsDirty() const { return m_gridIsDirty; }
 
-    typedef void (GridTrack::* AccumulatorGrowFunction)(LayoutUnit);
+    typedef void (GridTrack::* AccumulatorSetterFunction)(LayoutUnit);
 private:
     virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectLayoutGrid || LayoutBlock::isOfType(type); }
     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
     virtual void computePreferredLogicalWidths() override;
 
     virtual void addChild(LayoutObject* newChild, LayoutObject* beforeChild = 0) override;
     virtual void removeChild(LayoutObject*) override;
 
     virtual void styleDidChange(StyleDifference, const LayoutStyle*) override;
 
@@ skipping 23 matching lines @@
     void layoutGridItems();
     void layoutPositionedObjects(bool relayoutChildren, PositionedLayoutBehavior = DefaultLayout);
     void offsetAndBreadthForPositionedChild(const LayoutBox&, GridTrackSizingDirection, bool startIsAuto, bool endIsAuto, LayoutUnit& offset, LayoutUnit& breadth);
     void populateGridPositions(const GridSizingData&);
 
     typedef LayoutUnit (LayoutGrid::* SizingFunction)(LayoutBox&, GridTrackSizingDirection, Vector<GridTrack>&);
     typedef const LayoutUnit& (GridTrack::* AccumulatorGetter)() const;
     typedef bool (GridTrackSize::* FilterFunction)() const;
     typedef struct GridItemsSpanGroupRange GridItemsSpanGroupRange;
     void resolveContentBasedTrackSizingFunctionsForNonSpanningItems(GridTrackSizingDirection, const GridCoordinate&, LayoutBox& gridItem, GridTrack&, Vector<GridTrack>& columnTracks);
-    void resolveContentBasedTrackSizingFunctionsForItems(GridTrackSizingDirection, GridSizingData&, const GridItemsSpanGroupRange&, FilterFunction, SizingFunction, AccumulatorGetter, AccumulatorGrowFunction, FilterFunction growAboveMaxBreadthFilterFunction = nullptr);
+    void resolveContentBasedTrackSizingFunctionsForItems(GridTrackSizingDirection, GridSizingData&, const GridItemsSpanGroupRange&, FilterFunction, SizingFunction, AccumulatorGetter trackGetter, AccumulatorGetter trackGetterIfNotInfinite, AccumulatorSetterFunction, FilterFunction growAboveMaxBreadthFilterFunction = nullptr);
     void distributeSpaceToTracks(Vector<GridTrack*>&, const Vector<GridTrack*>* growBeyondGrowthLimitsTracks, AccumulatorGetter, GridSizingData&, LayoutUnit& availableLogicalSpace);
 
     double computeNormalizedFractionBreadth(Vector<GridTrack>&, const GridSpan& tracksSpan, GridTrackSizingDirection, LayoutUnit availableLogicalSpace) const;
 
     GridTrackSize gridTrackSize(GridTrackSizingDirection, size_t) const;
 
     LayoutUnit logicalHeightForChild(LayoutBox&, Vector<GridTrack>&);
     LayoutUnit minContentForChild(LayoutBox&, GridTrackSizingDirection, Vector<GridTrack>& columnTracks);
     LayoutUnit maxContentForChild(LayoutBox&, GridTrackSizingDirection, Vector<GridTrack>& columnTracks);
     LayoutUnit startOfColumnForChild(const LayoutBox& child) const;
@@ skipping 53 matching lines @@
     OrderIterator m_orderIterator;
     Vector<LayoutBox*> m_gridItemsOverflowingGridArea;
     HashMap<const LayoutBox*, size_t> m_gridItemsIndexesMap;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutGrid, isLayoutGrid());
 
 } // namespace blink
 
 #endif // LayoutGrid_h