[css-flexbox] Correctly determine whether a percentage height is definite

Source/core/layout/LayoutFlexibleBox.h

Index: Source/core/layout/LayoutFlexibleBox.h
diff --git a/Source/core/layout/LayoutFlexibleBox.h b/Source/core/layout/LayoutFlexibleBox.h
index 5620dc69b4d8d40127087a833df206af58f22f8c..163836c1c762afc69afa10ed2b81d211cbee02cc 100644
--- a/Source/core/layout/LayoutFlexibleBox.h
+++ b/Source/core/layout/LayoutFlexibleBox.h
@@ -101,7 +101,6 @@ private:
     LayoutUnit crossAxisIntrinsicExtentForChild(LayoutBox& child) const;
     LayoutUnit childIntrinsicHeight(LayoutBox& child) const;
     LayoutUnit childIntrinsicWidth(LayoutBox& child) const;
-    bool mainAxisExtentIsDefinite() const;
     LayoutUnit mainAxisExtentForChild(LayoutBox& child) const;
     LayoutUnit crossAxisExtent() const;
     LayoutUnit mainAxisExtent() const;
@@ -130,7 +129,7 @@ private:
     ItemPosition alignmentForChild(LayoutBox& child) const;
     LayoutUnit mainAxisBorderAndPaddingExtentForChild(LayoutBox& child) const;
     LayoutUnit computeInnerFlexBaseSizeForChild(LayoutBox& child, ChildLayoutType = LayoutIfNeeded);
-    bool mainAxisLengthIsIndefinite(const Length& flexBasis) const;
+    bool mainAxisLengthIsIndefinite(LayoutBox& child, const Length& flexBasis) const;
     bool childFlexBaseSizeRequiresLayout(LayoutBox& child) const;
     bool needToStretchChildLogicalHeight(LayoutBox& child) const;
     EOverflow mainAxisOverflowForChild(LayoutBox& child) const;