Merge "Add unit tests for DWPC" into tm-dev am: c4220f5b am: 6a53a58a am: 322693d5

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



Change-Id: I4cb34edd2a4e9fe156d8b5656b4cbe37d37564c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>