Revert "Remove OwnPtr from Blink."

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 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef LayoutGrid_h
 #define LayoutGrid_h
 
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/OrderIterator.h"
 #include "core/style/GridPositionsResolver.h"
-#include <memory>
 
 namespace blink {
 
 struct ContentAlignmentData;
 struct GridArea;
 struct GridSpan;
 class GridTrack;
 
 enum TrackSizeComputationPhase {
     ResolveIntrinsicMinimums,
@@ skipping 83 matching lines @@
     LayoutUnit computeUsedBreadthOfMaxLength(const GridLength&, LayoutUnit usedBreadth, LayoutUnit maxBreadth) const;
     void resolveContentBasedTrackSizingFunctions(GridTrackSizingDirection, GridSizingData&);
 
     void ensureGridSize(size_t maximumRowSize, size_t maximumColumnSize);
     void insertItemIntoGrid(LayoutBox&, const GridArea&);
 
     size_t computeAutoRepeatTracksCount(GridTrackSizingDirection) const;
 
     void placeItemsOnGrid();
     void populateExplicitGridAndOrderIterator();
-    std::unique_ptr<GridArea> createEmptyGridAreaAtSpecifiedPositionsOutsideGrid(const LayoutBox&, GridTrackSizingDirection, const GridSpan& specifiedPositions) const;
+    PassOwnPtr<GridArea> createEmptyGridAreaAtSpecifiedPositionsOutsideGrid(const LayoutBox&, GridTrackSizingDirection, const GridSpan& specifiedPositions) const;
     void placeSpecifiedMajorAxisItemsOnGrid(const Vector<LayoutBox*>&);
     void placeAutoMajorAxisItemsOnGrid(const Vector<LayoutBox*>&);
     void placeAutoMajorAxisItemOnGrid(LayoutBox&, std::pair<size_t, size_t>& autoPlacementCursor);
     GridTrackSizingDirection autoPlacementMajorAxisDirection() const;
     GridTrackSizingDirection autoPlacementMinorAxisDirection() const;
 
     void computeIntrinsicLogicalHeight(GridSizingData&);
     LayoutUnit computeTrackBasedLogicalHeight(const GridSizingData&) const;
     void computeTrackSizesForDirection(GridTrackSizingDirection, GridSizingData&, LayoutUnit freeSpace);
 
     void layoutGridItems(GridSizingData&);
     void prepareChildForPositionedLayout(LayoutBox&);
     void layoutPositionedObjects(bool relayoutChildren, PositionedLayoutBehavior = DefaultLayout);
     void offsetAndBreadthForPositionedChild(const LayoutBox&, GridTrackSizingDirection, LayoutUnit& offset, LayoutUnit& breadth);
     void populateGridPositionsForDirection(GridSizingData&, GridTrackSizingDirection);
 
     typedef struct GridItemsSpanGroupRange GridItemsSpanGroupRange;
     LayoutUnit currentItemSizeForTrackSizeComputationPhase(TrackSizeComputationPhase, LayoutBox&, GridTrackSizingDirection, GridSizingData&);
     void resolveContentBasedTrackSizingFunctionsForNonSpanningItems(GridTrackSizingDirection, const GridSpan&, LayoutBox& gridItem, GridTrack&, GridSizingData&);
     template <TrackSizeComputationPhase> void resolveContentBasedTrackSizingFunctionsForItems(GridTrackSizingDirection, GridSizingData&, const GridItemsSpanGroupRange&);
     template <TrackSizeComputationPhase> void distributeSpaceToTracks(Vector<GridTrack*>&, const Vector<GridTrack*>* growBeyondGrowthLimitsTracks, GridSizingData&, LayoutUnit& availableLogicalSpace);
 
     typedef HashSet<size_t, DefaultHash<size_t>::Hash, WTF::UnsignedWithZeroKeyHashTraits<size_t>> TrackIndexSet;
-    double computeFlexFactorUnitSize(const Vector<GridTrack>&, GridTrackSizingDirection, double flexFactorSum, LayoutUnit& leftOverSpace, const Vector<size_t, 8>& flexibleTracksIndexes, std::unique_ptr<TrackIndexSet> tracksToTreatAsInflexible = nullptr) const;
+    double computeFlexFactorUnitSize(const Vector<GridTrack>&, GridTrackSizingDirection, double flexFactorSum, LayoutUnit& leftOverSpace, const Vector<size_t, 8>& flexibleTracksIndexes, PassOwnPtr<TrackIndexSet> tracksToTreatAsInflexible = nullptr) const;
     double findFlexFactorUnitSize(const Vector<GridTrack>&, const GridSpan&, GridTrackSizingDirection, LayoutUnit leftOverSpace) const;
 
     const GridTrackSize& rawGridTrackSize(GridTrackSizingDirection, size_t) const;
     GridTrackSize gridTrackSize(GridTrackSizingDirection, size_t, SizingOperation = TrackSizing) const;
 
     bool updateOverrideContainingBlockContentSizeForChild(LayoutBox&, GridTrackSizingDirection, GridSizingData&);
     LayoutUnit logicalHeightForChild(LayoutBox&, GridSizingData&);
     LayoutUnit minSizeForChild(LayoutBox&, GridTrackSizingDirection, GridSizingData&);
     LayoutUnit minContentForChild(LayoutBox&, GridTrackSizingDirection, GridSizingData&);
     LayoutUnit maxContentForChild(LayoutBox&, GridTrackSizingDirection, GridSizingData&);
@@ skipping 55 matching lines @@
 
     size_t m_autoRepeatColumns { 0 };
     size_t m_autoRepeatRows { 0 };
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutGrid, isLayoutGrid());
 
 } // namespace blink
 
 #endif // LayoutGrid_h