Add DomainSelection owners for Telephony APIs

Test: owners change
Flag: EXEMPT
Change-Id: Ie6f171870172c322b86354ca3f2c71ccba8953ca
diff --git a/OWNERS b/OWNERS
index 35f2818..7e57200 100644
--- a/OWNERS
+++ b/OWNERS
@@ -17,6 +17,5 @@
 tnd@google.com
 xiaotonj@google.com
 
-
-
-
+# Domain Selection code is co-owned, adding additional owners for this code
+per-file EmergencyStateTracker*=hwangoo@google.com,forestchoi@google.com,avinashmp@google.com,mkoon@google.com,seheele@google.com