Merge "Depend on aars in prebuilts/sdk for window extensions" into udc-dev am: 02016279

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22464228



Change-Id: I30e8de63b72e832737465dce3e283366f7f961ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>