Merge "Improve exit transition for task close case" into tm-qpr-dev am: 2e075980 am: 8790168a am: 6e59a203 am: c54cba26

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22162082



Change-Id: I493ff25c292c5b79da6d050e3551755755dddbfa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>