nsFontCache::Init(nsIDeviceContext* aContext)
nsresult nsFontCache :: Init(nsIDeviceContext* aContext)
nsFontCache::Init(nsIDeviceContext* aContext){  NS_PRECONDITION(nsnull != aContext, "null ptr");  // Note: we don't hold a reference to the device context, because it  // holds a reference to us and we don't want circular references  mContext = aContext;  return NS_OK;}