Merge "[NGA v2] Reliable Visible Activity Lookup" into sc-v2-dev am: 80fcbc8fe0 am: 347557e905

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15810445

Change-Id: I4a5b0c551343984de6124a497f7b24dd750c5aca