Merge "Rename unfold background executor to add single thread assumption" into...

Merge "Rename unfold background executor to add single thread assumption" into tm-qpr-dev am: 60a0560b am: c6217905

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20919272



Change-Id: I19b19963d1be74b46047737bbaba34c795a4bddf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>