Add kUpdateStatusCleanupPreviousUpdate.

Test: pass
Bug: 147696014
Change-Id: I63160745c5904597d4faf573a556ada753674b9f
Merged-In: I63160745c5904597d4faf573a556ada753674b9f

dbus/update_engine/dbus-constants.h

diff --git a/dbus/update_engine/dbus-constants.h b/dbus/update_engine/dbus-constants.h
index 9551b41..f496279 100644
--- a/dbus/update_engine/dbus-constants.h
+++ b/dbus/update_engine/dbus-constants.h
@@ -61,6 +61,8 @@
 const char kUpdateStatusDisabled[] = "UPDATE_STATUS_DISABLED";
 const char kUpdateStatusNeedPermissionToUpdate[] =
     "UPDATE_STATUS_NEED_PERMISSION_TO_UPDATE";
+const char kUpdateStatusCleanupPreviousUpdate[] =
+    "UPDATE_STATUS_CLEANUP_PREVIOUS_UPDATE";
 }  // namespace update_engine
 
 #endif  // SYSTEM_API_DBUS_UPDATE_ENGINE_DBUS_CONSTANTS_H_