travis: install chrome using sources list.
travis: install chrome using sources list.

bmcculley/splinter,nikolas/splinter,gjvis/splinter,bubenkoff/splinter,gjvis/splinter,lrowe/splinter,bmcculley/splinter,underdogio/splinter,drptbl/splinter,drptbl/splinter,bmcculley/splinter,cobrateam/splinter,objarni/splinter,lrowe/splinter,objarni/splinter,bubenkoff/splinter,nikolas/splinter,myself659/splinter,objarni/splinter,drptbl/splinter,underdogio/splinter,gjvis/splinter,nikolas/splinter,myself659/splinter,cobrateam/splinter,lrowe/splinter,cobrateam/splinter,myself659/splinter,underdogio/splinter