Event logging for lockdown VPN state changes.

Bug: 7079350
Change-Id: I3670efe7f09c0fca55552b6a04a2be159b9beb3c
diff --git a/services/java/com/android/server/EventLogTags.logtags b/services/java/com/android/server/EventLogTags.logtags
index dd50beb..39355d5 100644
--- a/services/java/com/android/server/EventLogTags.logtags
+++ b/services/java/com/android/server/EventLogTags.logtags
@@ -148,3 +148,11 @@
 # ---------------------------
 51100 netstats_mobile_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3)
 51101 netstats_wifi_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3)
+
+
+# ---------------------------
+# LockdownVpnTracker.java
+# ---------------------------
+51200 lockdown_vpn_connecting (egress_net|1)
+51201 lockdown_vpn_connected (egress_net|1)
+51202 lockdown_vpn_error (egress_net|1)