Merge "Deference mAppPredictor on destroy" into rvc-dev am: d76fa360e7 am: a85e5e0587

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12003747

Change-Id: Ib426345f8490043fe23a9dbce4bf7e6e65eddce7