Merge "Rescan face when user preses empty space on LS" into sc-dev am: 86675375 am: fe3a59a6

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

Change-Id: I8a210e57c2b410e416b2f260c94ad3080a8bc38f