[css-flexbox] Don't force layout for overflow: auto anymore

third_party/WebKit/Source/core/layout/LayoutFlexibleBox.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 147 matching lines @@
   LayoutUnit computeInnerFlexBaseSizeForChild(
       LayoutBox& child,
       LayoutUnit mainAxisBorderAndPadding,
       ChildLayoutType = LayoutIfNeeded);
   void adjustAlignmentForChild(LayoutBox& child, LayoutUnit);
   ItemPosition alignmentForChild(const LayoutBox& child) const;
   bool mainAxisLengthIsDefinite(const LayoutBox& child,
                                 const Length& flexBasis) const;
   bool crossAxisLengthIsDefinite(const LayoutBox& child,
                                  const Length& flexBasis) const;
-  bool childFlexBaseSizeRequiresLayout(const LayoutBox& child) const;
   bool needToStretchChildLogicalHeight(const LayoutBox& child) const;
   bool childHasIntrinsicMainAxisSize(const LayoutBox& child) const;
   EOverflow mainAxisOverflowForChild(const LayoutBox& child) const;
   EOverflow crossAxisOverflowForChild(const LayoutBox& child) const;
   void cacheChildMainSize(const LayoutBox& child);
 
   void layoutFlexItems(bool relayoutChildren, SubtreeLayoutScope&);
   LayoutUnit autoMarginOffsetInMainAxis(const OrderedFlexItemList&,
                                         LayoutUnit& availableFreeSpace);
   void updateAutoMarginsInMainAxis(LayoutBox& child,
@@ skipping 93 matching lines @@
 
   // This is SizeIsUnknown outside of layoutBlock()
   mutable SizeDefiniteness m_hasDefiniteHeight;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFlexibleBox, isFlexibleBox());
 
 }  // namespace blink
 
 #endif  // LayoutFlexibleBox_h