1. The print spooler fails to parse page ranges that end with
a dash, e,g, "1-", which are however valid inputs since the
user can continue typing to end up with a well-fromed range.
2. After a layout we are asking for the first selected page
to be written emulating print preview, thus increasing the
changes that apps will correctly implement the APIs.
bug:10743632
Change-Id: Ia74172d4fa6bce6ad93a0bc53da1aaa3fe8bef42
c3484024e1