Add code owners for desktop

Bug: 315483862
Change-Id: I501547e1b78ac6e95bb058ea83e33004738f0fc9
diff --git a/libs/WindowManager/Shell/tests/OWNERS b/libs/WindowManager/Shell/tests/OWNERS
index deebad5..d718e15 100644
--- a/libs/WindowManager/Shell/tests/OWNERS
+++ b/libs/WindowManager/Shell/tests/OWNERS
@@ -9,3 +9,6 @@
 chenghsiuchang@google.com
 atsjenk@google.com
 jorgegil@google.com
+nmusgrave@google.com
+pbdr@google.com
+tkachenkoi@google.com