Browsing Swahili translation

UNUSED: () OR (chromeos) OR (is_macosx or is_ios) OR (not is_android) == False
note: 'History, one of the data types that we allow syncing.'
note: 'Label for the checkbox which enables or disables syncing history between multiple browser instances.'
note: 'The menu title of the Mac history menu.'
note: 'The text in the keyboard overlay to explain the shortcut.'
note: 'Title for the history tab.'
in: results/cr/chrome/app/generated_resources.grd, as IDS_HISTORY_TITLE
in: results/cr/chrome/app/generated_resources.grd, as IDS_HISTORY_BROWSERESULTS