Chromium change: https://source.chromium.org/chromium/chromium/src/+/65eee63c0e75ebd343c409a7c14addb00ca4b6dd [Tab Model] Deprecate tab_groups package Merge the tab_groups/ package into tabmodel/. The two packages have significant overlap and should really have a lot of their logic merged anyway. This allows us to package protect TabGroupModelFilterInternal and make destroy method package private as well. Fixed: 372068933