Merge "Moving activity tracker to Launcher process" into sc-v2-dev am: c77e3fde09 am: 93318f746f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15912383

Change-Id: I1cb8c49ab25dde0deb6417cac5ab582b9ba0d354