[automerger skipped] Merge "Remove custom BackgroundThread and HandlerExecutor" am: 2fb199ae6d -s ours am: 0de6e92213 -s ours am: 3003711ef7 -s ours

am skip reason: Merged-In Ie77277cd990216ba6cf6b83885574223e0fca590 with SHA-1 4499007494 is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/providers/MediaProvider/+/1815936

Change-Id: I0b0e08eaf504660c62600e0148b0aa262aa834a0