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