Add owner for wm policy test

Bug: 220669913
Change-Id: Ica2bb987f1b00d1d38064f7f2482890d8e97203f
diff --git a/services/tests/wmtests/src/com/android/server/policy/OWNERS b/services/tests/wmtests/src/com/android/server/policy/OWNERS
new file mode 100644
index 0000000..27891dc
--- /dev/null
+++ b/services/tests/wmtests/src/com/android/server/policy/OWNERS
@@ -0,0 +1 @@
+include /services/core/java/com/android/server/policy/OWNERS