Merge "Reuse tasks in background in priority for split screen" into tm-qpr-dev am: e9f622dc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19950544



Change-Id: I4cf0e62808b22ca0ee092c90c99f0f984163a480
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>