Merge "Do not throw exception on task vanished" into tm-qpr-dev am: e572351d...

Merge "Do not throw exception on task vanished" into tm-qpr-dev am: e572351d am: 1df1042d am: 83dde0bc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22333702



Change-Id: I3b6ab36f7b5a35bc6d09b70d08840ada3eb6e9e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>