LossyCopyUTF16toASCII( const PRUnichar* aSource, nsACString& aDest )
LossyCopyUTF16toASCII( const nsAString& aSource, nsACString& aDest )
LossyCopyUTF16toASCII( const PRUnichar* aSource, nsACString& aDest )  {    aDest.Truncate();    if (aSource) {      LossyAppendUTF16toASCII(nsDependentString(aSource), aDest);    }  }