Merge "Improve exit transition for task close case" into tm-qpr-dev am:...

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

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



Change-Id: Ida06790832a9516b8780d92332b953e6558349db
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>