New constant for new settings screen.

Bug: 36561295
Test: make
Change-Id: I0e2ec6d7b372a9594f8b583540804dde1b79de1a
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 93a5557..dc082e1 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -3938,6 +3938,16 @@
     // OS: O
     ENTERPRISE_PRIVACY_DEFAULT_APPS = 940;
 
+    // OPEN: Settings > Notifications > An app > A channel > Importance
+    // CATEGORY: SETTINGS
+    // OS: O
+    NOTIFICATION_CHANNEL_IMPORTANCE = 941;
+
+    // OPEN: Settings > Notifications > An app > A channel > On the lock screen
+    // CATEGORY: SETTINGS
+    // OS: O
+    NOTIFICATION_CHANNEL_LOCK_SCREEN_VIS = 942;
+
     // ---- End O Constants, all O constants go above this line ----
 
     // Add new aosp constants above this line.