CopyUTF8toUTF16( const char* aSource, nsAString& aDest )
CopyUTF8toUTF16( const nsACString& aSource, nsAString& aDest )
CopyUTF8toUTF16( const char* aSource, nsAString& aDest )  {    aDest.Truncate();    AppendUTF8toUTF16(aSource, aDest);  }