Add Tron Logging to Keyboard Shortcuts Helper

Bug: 28161718
Change-Id: I5dcbb4c9f26d133e695595168ac2cd0ad1fa68d7
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 1c12565..cda3892 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -2239,6 +2239,10 @@
     // CATEGORY: SETTINGS
     STORAGE_MANAGER_SETTINGS = 458;
 
+    // ------- Begin N Keyboard Shortcuts Helper -----
+    // Keyboard Shortcuts Helper is opened/closed.
+    KEYBOARD_SHORTCUTS_HELPER = 459;
+
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS
   }