[css-flexbox] Apply min-height: auto to nested flexboxes again

third_party/WebKit/Source/core/layout/LayoutFlexibleBox.cpp

 /*
  * 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 1079 matching lines @@
             childSize = maxExtent;
     }
 
     Length min = isHorizontalFlow() ? child.style()->minWidth() : child.style()->minHeight();
     LayoutUnit minExtent;
     if (min.isSpecifiedOrIntrinsic()) {
         minExtent = computeMainAxisExtentForChild(child, MinSize, min);
         // computeMainAxisExtentForChild can return -1 when the child has a percentage
         // min size, but we have an indefinite size in that axis.
         minExtent = std::max(LayoutUnit(), minExtent);
-    } else if (min.isAuto() && mainAxisOverflowForChild(child) == OverflowVisible && !(isColumnFlow() && child.isFlexibleBox())) {
-        // TODO(cbiesinger): For now, we do not handle min-height: auto for nested column flexboxes. We need
-        // to implement https://drafts.csswg.org/css-flexbox/#intrinsic-sizes before that produces
-        // reasonable results. Tracking bug: https://crbug.com/581553
-        // css-flexbox section 4.5
+    } else if (min.isAuto() && mainAxisOverflowForChild(child) == OverflowVisible) {
         LayoutUnit contentSize = computeMainAxisExtentForChild(child, MinSize, Length(MinContent));
         ASSERT(contentSize >= 0);
         if (hasAspectRatio(child) && child.intrinsicSize().height() > 0)
             contentSize = adjustChildSizeForAspectRatioCrossAxisMinAndMax(child, contentSize);
         if (maxExtent != -1 && contentSize > maxExtent)
             contentSize = maxExtent;
 
         Length mainSize = isHorizontalFlow() ? child.styleRef().width() : child.styleRef().height();
         if (mainAxisLengthIsDefinite(child, mainSize)) {
             LayoutUnit resolvedMainSize = computeMainAxisExtentForChild(child, MainOrPreferredSize, mainSize);
@@ skipping 787 matching lines @@
             ASSERT(child);
             LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisExtent;
             LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
             LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxisExtent;
             adjustAlignmentForChild(*child, newOffset - originalOffset);
         }
     }
 }
 
 } // namespace blink