Add metric PREVIOUSLY_CONNECTED_DEVICES

Bug: 74134939
Test: Build
Change-Id: I134e1aea2a562a8a3f33b340a7dfc643b89886d4
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index cfb5c6d..c6878d7 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -5557,6 +5557,10 @@
     // OS: P
     SETTINGS_CONDITION_DEVICE_VIBRATE = 1369;
 
+    // OPEN: Settings > Connected devices > previously connected devices
+    // CATEGORY: SETTINGS
+    // OS: P
+    PREVIOUSLY_CONNECTED_DEVICES = 1370;
 
     // ---- End P Constants, all P constants go above this line ----
     // Add new aosp constants above this line.