Merge "Use a strongly typed Uid in WindowInfo" into udc-qpr-dev am: 042a7a0b19

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23620817

Change-Id: I3e03087d9aa239d1cc976287aef5c2b71dc991c7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>