Merge "Keep splitting tasks in the background with shell transition" into...

Merge "Keep splitting tasks in the background with shell transition" into udc-dev am: 026f3296 am: ba9e1038 am: cb2c8c3e am: 0e8cc989

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22994256



Change-Id: If690ac3ea464c3ba622385eaa2c438880bdda3f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>