Use more RenderBox references in RenderFlexibleBox

Source/core/rendering/RenderFlexibleBox.h

Index: Source/core/rendering/RenderFlexibleBox.h
diff --git a/Source/core/rendering/RenderFlexibleBox.h b/Source/core/rendering/RenderFlexibleBox.h
index 0870799dfdbb1e6ddfe398360faec0fcfa1a9471..f2c7ed733a7b3981d150768eca5400d91cc983ed 100644
--- a/Source/core/rendering/RenderFlexibleBox.h
+++ b/Source/core/rendering/RenderFlexibleBox.h
@@ -107,53 +107,53 @@ private:
     LayoutUnit flowAwarePaddingEnd() const;
     LayoutUnit flowAwarePaddingBefore() const;
     LayoutUnit flowAwarePaddingAfter() const;
-    LayoutUnit flowAwareMarginStartForChild(RenderBox* child) const;
-    LayoutUnit flowAwareMarginEndForChild(RenderBox* child) const;
-    LayoutUnit flowAwareMarginBeforeForChild(RenderBox* child) const;
-    LayoutUnit crossAxisMarginExtentForChild(RenderBox* child) const;
+    LayoutUnit flowAwareMarginStartForChild(RenderBox& child) const;
+    LayoutUnit flowAwareMarginEndForChild(RenderBox& child) const;
+    LayoutUnit flowAwareMarginBeforeForChild(RenderBox& child) const;
+    LayoutUnit crossAxisMarginExtentForChild(RenderBox& child) const;
     LayoutUnit crossAxisScrollbarExtent() const;
-    LayoutUnit crossAxisScrollbarExtentForChild(RenderBox* child) const;
-    LayoutPoint flowAwareLocationForChild(RenderBox* child) const;
+    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);
+    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);
+    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;
 
     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 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&);
 
-    LayoutUnit availableAlignmentSpaceForChild(LayoutUnit lineCrossAxisExtent, RenderBox*);
-    LayoutUnit availableAlignmentSpaceForChildBeforeStretching(LayoutUnit lineCrossAxisExtent, RenderBox*);
-    LayoutUnit marginBoxAscentForChild(RenderBox*);
+    LayoutUnit availableAlignmentSpaceForChild(LayoutUnit lineCrossAxisExtent, RenderBox& child);
+    LayoutUnit availableAlignmentSpaceForChildBeforeStretching(LayoutUnit lineCrossAxisExtent, RenderBox& child);
+    LayoutUnit marginBoxAscentForChild(RenderBox& child);
 
     LayoutUnit computeChildMarginValue(Length margin);
     void prepareOrderIteratorAndMargins();
-    LayoutUnit adjustChildSizeForMinAndMax(RenderBox*, LayoutUnit childSize);
+    LayoutUnit adjustChildSizeForMinAndMax(RenderBox& child, LayoutUnit childSize);
     // The hypothetical main size of an item is the flex base size clamped according to its min and max main size properties
     bool computeNextFlexLine(OrderedFlexItemList& orderedChildren, LayoutUnit& sumFlexBaseSize, double& totalFlexGrow, double& totalWeightedFlexShrink, LayoutUnit& sumHypotheticalMainSize, bool& hasInfiniteLineLength, bool relayoutChildren);
 
     bool resolveFlexibleLengths(FlexSign, const OrderedFlexItemList&, LayoutUnit& availableFreeSpace, double& totalFlexGrow, double& totalWeightedFlexShrink, InflexibleFlexItemSize&, Vector<LayoutUnit, 16>& childSizes, bool hasInfiniteLineLength);
     void freezeViolations(const Vector<Violation>&, LayoutUnit& availableFreeSpace, double& totalFlexGrow, double& totalWeightedFlexShrink, InflexibleFlexItemSize&, bool hasInfiniteLineLength);
 
-    void resetAutoMarginsAndLogicalTopInCrossAxis(RenderBox*);
+    void resetAutoMarginsAndLogicalTopInCrossAxis(RenderBox& child);
     void setLogicalOverrideSize(RenderBox& child, LayoutUnit childPreferredSize);
-    void prepareChildForPositionedLayout(RenderBox* child, LayoutUnit mainAxisOffset, LayoutUnit crossAxisOffset, PositionedLayoutMode);
+    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 applyStretchAlignmentToChild(RenderBox& child, LayoutUnit lineCrossAxisExtent);
     void flipForRightToLeftColumn();
     void flipForWrapReverse(const Vector<LineContext>&, LayoutUnit crossAxisStartEdge);