Merge "Rescan face when user preses empty space on LS" into sc-dev am: 86675375 am: 847acc39 am: f388f15e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15412658

Change-Id: I610cd16937a72cbfe1d347624eedfdafd1874429