Merge "Check null taskInfo for occlude transitions" into udc-dev am:...

Merge "Check null taskInfo for occlude transitions" into udc-dev am: 2d319490 am: 06ffd562 am: 706a933f am: 62065257

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23154320



Change-Id: Icbca35e9cddd6ea3262c1a67a6e3b4bee685418c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>