Merge "Make WindowManager compat properties public." into udc-dev am: 1be7278e6d am: e7b66b9ae5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21519185

Change-Id: I77dd4f3a2be26650a7154e423e3a8d827b9893cf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>