Browsing Gaelic; Scottish translation

UNUSED: () OR (chromeos) OR (is_win) OR (not is_android and not is_ios) == False
note: 'Text of the button that advances the tutorial to the next slide'
note: 'Text on the first-run tutorial button leading to next step of tutorial.'
note: 'Text shown on next button during offline signin flow dialog. Note: should be the same as the one used on the Gaia sign-in page.'
note: 'Text shown on next button in supervised user creation dialog.'
note: 'The accessible name for the next button.'
in: results/cr/chrome/app/generated_resources.grd, as IDS_HISTORY_RANGE_NEXT
in: results/cr/chrome/app/generated_resources.grd, as IDS_FIND_IN_PAGE_NEXT_TOOLTIP