diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 3dd75bbe9bbb4..fd4690c605f52 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -3974,6 +3974,31 @@ message MetricsEvent {
 
     // ---- End O Constants, all O constants go above this line ----
 
+    // ACTION: CaptivePortalLoginActivity starts
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: O DR
+    ACTION_CAPTIVE_PORTAL_LOGIN_ACTIVITY = 1004;
+
+    // ACTION: CaptivePortalLoginActivity auto-closes
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: O DR
+    ACTION_CAPTIVE_PORTAL_LOGIN_RESULT_DISMISSED = 1005;
+
+    // ACTION: CaptivePortalLoginActivity > Menu > Do not use this network
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: O DR
+    ACTION_CAPTIVE_PORTAL_LOGIN_RESULT_UNWANTED = 1006;
+
+    // ACTION: CaptivePortalLoginActivity > Menu > Use this network
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: O DR
+    ACTION_CAPTIVE_PORTAL_LOGIN_RESULT_WANTED_AS_IS = 1007;
+
+    // ACTION: Settings > Wi-Fi > [Long press network] > Sign in to network
+    // CATEGORY: SETTINGS
+    // OS: O DR
+    ACTION_WIFI_SIGNIN = 1008;
+
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS
   }