[automerger skipped] Move ApiDocs.bp and StubLibraries.bp to api dir am:...

[automerger skipped] Move ApiDocs.bp and StubLibraries.bp to api dir am: 94c9945a -s ours am: ceb92735 -s ours am: 6da6e62d -s ours

am skip reason: Merged-In I354f3cb62535f34d8819d158e53aa46ff26dc18a with SHA-1 19fcec6c is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23132025



Change-Id: I82aa84ab4786b263bf91af48f29a9130129e639b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>