TRON variables for provisioning sessions

They are logged only once per provisioning session.

Test: NA

Bug: 33204472
Bug: 31425628
Change-Id: I480845bbb4e43b3f4395a9096fa7ef56ca2adce0
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index fc8c675..77db537 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -3075,6 +3075,12 @@
     // PACKAGE: The package name of the app the permission was revoked for
     ACTION_PERMISSION_REVOKE_WRITE_EXTERNAL_STORAGE = 733;
 
+    // ACTION: Logged when a provisioning session has started
+    PROVISIONING_SESSION_STARTED = 734;
+
+    // ACTION: Logged when a provisioning session has completed
+    PROVISIONING_SESSION_COMPLETED = 735;
+
     // ---- End O Constants, all O constants go above this line ----
 
     // Add new aosp constants above this line.