Type 'tm' and space, then you can set the timer from the omnibox. When time is over, Chrome will show a desktop notification.
Please visit chrome web store.
10 Lunch
: the default unit is minute. This timer will ring in 10 minutes.30s
: 30 seconds20m Go home
: 20 minutes1h meeting
: 1 hour
show
oroptions
: opens Options page.