Add face metrics constants

Bug: 110589286

Test: builds
Change-Id: I76931350ccd3b459f9511588926f3351d7574f01
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index dc6d16b..b6a5a9c 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -6160,6 +6160,14 @@
     // CATEGORY: SETTINGS
     // OS: Q
     FACE_ENROLL_FINISHED = 1508;
+
+    // OPEN: Face Enroll sidecar
+    // CATEGORY: SETTINGS
+    // OS: Q
+    FACE_ENROLL_SIDECAR = 1509;
+
+    // OPEN: Settings > Add face > Error dialog
+    DIALOG_FACE_ERROR = 5510;
     // ---- End Q Constants, all Q constants go above this line ----
 
     // Add new aosp constants above this line.