Flexbox: Allow intrinsic aspect ratios to inform main-size calculation

Source/core/rendering/RenderFlexibleBox.h

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 104 matching lines @@
     LayoutUnit crossAxisScrollbarExtentForChild(RenderBox* child) const;
     LayoutPoint flowAwareLocationForChild(RenderBox* child) const;
     // FIXME: Supporting layout deltas.
     void setFlowAwareLocationForChild(RenderBox* child, const LayoutPoint&);
     void adjustAlignmentForChild(RenderBox* child, LayoutUnit);
     ItemPosition alignmentForChild(RenderBox* child) const;
     LayoutUnit mainAxisBorderAndPaddingExtentForChild(RenderBox* child) const;
     LayoutUnit preferredMainAxisContentExtentForChild(RenderBox* child, bool hasInfiniteLineLength, bool relayoutChildren = false);
     bool childPreferredMainAxisContentExtentRequiresLayout(RenderBox* child, bool hasInfiniteLineLength) const;
     bool needToStretchChildLogicalHeight(RenderBox* child) const;
+    bool needToStretchChildLogicalWidth(RenderBox* child) const;
+    bool childHasFiniteCrossSize(RenderBox* child) const;
 
     void layoutFlexItems(bool relayoutChildren);
     LayoutUnit autoMarginOffsetInMainAxis(const OrderedFlexItemList&, LayoutUnit& availableFreeSpace);
     void updateAutoMarginsInMainAxis(RenderBox* child, LayoutUnit autoMarginOffset);
     bool hasAutoMarginsInCrossAxis(RenderBox* child) const;
     bool updateAutoMarginsInCrossAxis(RenderBox* child, LayoutUnit availableAlignmentSpace);
     void repositionLogicalHeightDependentFlexItems(Vector<LineContext>&);
     LayoutUnit clientLogicalBottomAfterRepositioning();
     void appendChildFrameRects(ChildFrameRects&);
 
@@ skipping 12 matching lines @@
 
     void resetAutoMarginsAndLogicalTopInCrossAxis(RenderBox*);
     void setLogicalOverrideSize(RenderBox* child, LayoutUnit childPreferredSize);
     void prepareChildForPositionedLayout(RenderBox* child, LayoutUnit mainAxisOffset, LayoutUnit crossAxisOffset, PositionedLayoutMode);
     size_t numberOfInFlowPositionedChildren(const OrderedFlexItemList&) const;
     void layoutAndPlaceChildren(LayoutUnit& crossAxisOffset, const OrderedFlexItemList&, const Vector<LayoutUnit, 16>& childSizes, LayoutUnit availableFreeSpace, bool relayoutChildren, Vector<LineContext>&, bool hasInfiniteLineLength);
     void layoutColumnReverse(const OrderedFlexItemList&, LayoutUnit crossAxisOffset, LayoutUnit availableFreeSpace);
     void alignFlexLines(Vector<LineContext>&);
     void alignChildren(const Vector<LineContext>&);
     void applyStretchAlignmentToChild(RenderBox*, LayoutUnit lineCrossAxisExtent);
+    void computeAspectRatioOfChild(RenderBox* child, double& aspectRatio);
     void flipForRightToLeftColumn();
     void flipForWrapReverse(const Vector<LineContext>&, LayoutUnit crossAxisStartEdge);
 
     // This is used to cache the preferred size for orthogonal flow children so we don't have to relayout to get it
     HashMap<const RenderObject*, LayoutUnit> m_intrinsicSizeAlongMainAxis;
 
     mutable OrderIterator m_orderIterator;
     int m_numberOfInFlowChildrenOnFirstLine;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderFlexibleBox, isFlexibleBox());
 
 } // namespace blink
 
 #endif // RenderFlexibleBox_h