Properly shrink stretched flexbox children on relayout

Source/core/rendering/RenderReplaced.h

Index: Source/core/rendering/RenderReplaced.h
diff --git a/Source/core/rendering/RenderReplaced.h b/Source/core/rendering/RenderReplaced.h
index 012d754e095eba4cb4cdb78a93b5fd498278afbf..21143cab68ea6fa925ca6114bce0f763267d12d8 100644
--- a/Source/core/rendering/RenderReplaced.h
+++ b/Source/core/rendering/RenderReplaced.h
@@ -51,6 +51,8 @@ protected:
 
     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE FINAL;
 
+    virtual LayoutUnit intrinsicContentLogicalHeight() const { return intrinsicLogicalHeight(); }
+
     virtual LayoutUnit minimumReplacedHeight() const { return LayoutUnit(); }
 
     virtual void setSelectionState(SelectionState) OVERRIDE FINAL;