Merge "Run inflations of UMO in a background thread" into tm-qpr-dev am: 69ce10984c am: 253a5cb538

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21448725

Change-Id: I5756699378d70207fbd3408f5eb7b9c2bece3df0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>