1] Component Name: Touchbar

2] Parent Component (e.g. Blink, UI>Browser, etc...): UI>Browser

3] Description of Component: Mac team's Touchbar support work. This is new UI surface for Chrome browser and we believe it fits well here.

4] Admin/ Owner: spqchan@

5] Please specify what triage practices will be followed for the component
(i.e. what team will do it and how frequently). Chrome-mac-dev@ will triage according to existing process and rotation.