Merge "Drop prebuilt files to android source tree." into tm-dev am: 045ab2fc am: 13a28ae2 am: b1138b18

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18331943



Change-Id: Ia662094ad4a04126576befc7829b14de7214b4b9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>