*aNewFrame = nsnull;  nsSVGDefsFrame* it = new (aPresShell) nsSVGDefsFrame; if (nsnull == it) return NS_ERROR_OUT_OF_MEMORY;  *aNewFrame = it;  return NS_OK;
return new (aPresShell) nsSVGDefsFrame;
NS_NewSVGDefsFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame){  *aNewFrame = nsnull;    nsSVGDefsFrame* it = new (aPresShell) nsSVGDefsFrame;  if (nsnull == it)    return NS_ERROR_OUT_OF_MEMORY;  *aNewFrame = it;  return NS_OK;}