AppendUTF8toUTF16( const char* aSource, nsAString& aDest )
AppendUTF8toUTF16( const nsACString& aSource, nsAString& aDest )
AppendUTF8toUTF16( const char* aSource, nsAString& aDest )  {    if (aSource) {      AppendUTF8toUTF16(nsDependentCString(aSource), aDest);    }  }