Merge "Initialize the app last used timestamps to 0 in test setup." into...

Merge "Initialize the app last used timestamps to 0 in test setup." into tm-dev am: 7bcee6bc am: f34d0ec7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17342696

Change-Id: I3599f8bfd31949de835016d6a65aa26ce4a35697