This will be done in three steps:
1 • Forbid CRX₂ components.
(Blocked on migrating all component-serving backends to CRX₃.)
2 • Forbid CRX₂ for non-force-installed extensions.
(Blocked on regenerating CRX₃ versions of all components in CWS.)
3 • Forbid CRX₂ for all extensions.
(Blocked on announcing deprecation announcements and a grace period for enterprise users.)
Comment 1 by waff...@chromium.org
, Jul 10 2017