[automerger skipped] Merge "Drop prebuilt files to android source tree." am:...

[automerger skipped] Merge "Drop prebuilt files to android source tree." am: 5bf40c41 am: 560ae9e7 -s ours am: d4ccef73 -s ours am: 1a5d4f6b -s ours

am skip reason: Merged-In I462a1f2ff62fd33145089c28b886a662bf8fc590 with SHA-1 969b96a3 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1717641

Change-Id: I1cf7fd1cb1c479e44bd755f56e523349e2609749