nsIAttribute(nsIContent *aContent, nsINodeInfo *aNodeInfo) : mContent(aContent), mNodeInfo(aNodeInfo)
nsIAttribute(nsDOMAttributeMap *aAttrMap, nsINodeInfo *aNodeInfo) : mAttrMap(aAttrMap), mNodeInfo(aNodeInfo)
  nsIAttribute(nsIContent *aContent, nsINodeInfo *aNodeInfo)    : mContent(aContent), mNodeInfo(aNodeInfo)  {  }