Merge "Drop prebuilt files to android source tree." am: 89e6a198 am: 8a09fc3f am: a1315f75

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2454834



Change-Id: I3044bcd6b07b63f64dccd10598d9d015762e90cb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>