Merge "Add unit tests for DWPC" into tm-dev am: c4220f5b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17348764



Change-Id: I769e1b65615301cea494f69213a1aade86f1134b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>