Flex grow wrongly calculated for value between 0 and 1

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 967 matching lines @@
         }
 
         if (inflexibleItems.contains(child)) {
             childSizes.append(inflexibleItems.get(child));
         } else {
             LayoutUnit childInnerFlexBaseSize = computeInnerFlexBaseSizeForChild(*child);
             LayoutUnit childSize = childInnerFlexBaseSize;
             double extraSpace = 0;
             bool childShrunk = false;
             if (availableFreeSpace > 0 && totalFlexGrow > 0 && flexSign == PositiveFlexibility && std::isfinite(totalFlexGrow)) {
-                extraSpace = availableFreeSpace * child->style()->flexGrow() / totalFlexGrow;
+                if (totalFlexGrow < 1)
+                    extraSpace = availableFreeSpace * child->style()->flexGrow();
+                else
+                    extraSpace = availableFreeSpace * child->style()->flexGrow() / totalFlexGrow;
             } else if (availableFreeSpace < 0 && totalWeightedFlexShrink > 0 && flexSign == NegativeFlexibility && std::isfinite(totalWeightedFlexShrink) && child->style()->flexShrink()) {
                 extraSpace = availableFreeSpace * child->style()->flexShrink() * childInnerFlexBaseSize / totalWeightedFlexShrink;
                 childShrunk = true;
             }
             if (std::isfinite(extraSpace))
                 childSize += LayoutUnit::fromFloatRound(extraSpace);
 
             LayoutUnit adjustedChildSize = adjustChildSizeForMinAndMax(*child, childSize, childShrunk);
             ASSERT(adjustedChildSize >= 0);
             childSizes.append(adjustedChildSize);
@@ skipping 497 matching lines @@
             ASSERT(child);
             LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisExtent;
             LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
             LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxisExtent;
             adjustAlignmentForChild(*child, newOffset - originalOffset);
         }
     }
 }
 
 }