Merge "Drop prebuilt files to android source tree." into sc-dev am: 2ab6db55 am: 55b6edcb am: 318e753a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15029070

Change-Id: I1c2f9420741876d85dfdc909d2ce77a75ec4942d