[css-flexbox] Make min-size:auto work correctly with an explicit width on the flex item

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 431 matching lines @@
     // Otherwise we need the logical height.
     if (isHorizontalFlow() != child.styleRef().isHorizontalWritingMode()) {
         // We don't have to check for "auto" here - computeContentLogicalHeight will just return -1 for that case anyway.
         // It's safe to access scrollbarLogicalHeight here because computeNextFlexLine will have already
         // forced layout on the child.
         return child.computeContentLogicalHeight(sizeType, size, child.contentLogicalHeight()) + child.scrollbarLogicalHeight();
     }
     // computeLogicalWidth always re-computes the intrinsic widths. However, when our logical width is auto,
     // we can just use our cached value. So let's do that here. (Compare code in LayoutBlock::computePreferredLogicalWidths)
     LayoutUnit borderAndPadding = child.borderAndPaddingLogicalWidth();
-    if (styleRef().logicalWidth().isAuto()) {
+    if (child.styleRef().logicalWidth().isAuto()) {
         if (size.type() == MinContent)
             return child.minPreferredLogicalWidth() - borderAndPadding;
         if (size.type() == MaxContent)
             return child.maxPreferredLogicalWidth() - borderAndPadding;
     }
     return child.computeLogicalWidthUsing(sizeType, size, contentLogicalWidth(), this) - borderAndPadding;
 }
 
 WritingMode LayoutFlexibleBox::transformedWritingMode() const
 {
@@ skipping 1055 matching lines @@
             ASSERT(child);
             LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisExtent;
             LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
             LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxisExtent;
             adjustAlignmentForChild(*child, newOffset - originalOffset);
         }
     }
 }
 
 }