www/chromium: update to 60.0.3112.101
- Update LICENSE
- Drop USE_GNOME=gtk20 dependency because chromium uses gtk3
- Use freetype2 bundled to avoid more issues related to the freetype library
- Fix typo in the comment of pre-configure section
- Update comment in SNDIO section
MFH: 2017Q3
Security: https://vuxml.freebsd.org/freebsd/7d138476-7710-11e7-88a1-e8e0b747a45a.html