[automerger skipped] Include WindowManager owners in core/res/OWNERS am: de6dee71e7 -s ours

am skip reason: Merged-In Ifdf283aed9b7803ca403bec2e5c21c3dfcc4e824 with SHA-1 8bf7a870ee is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20742707

Change-Id: I3cab7edb1304f63a38105c45db70d0a750e277ae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>