diff --git a/omaha_request_params.h b/omaha_request_params.h
index 14f3eaf..b33d0b1 100644
--- a/omaha_request_params.h
+++ b/omaha_request_params.h
@@ -76,6 +76,9 @@
     int64_t ping_date_last_active;
     int64_t ping_date_last_rollcall;
     bool send_ping;
+    // |updated| is only used for DLCs to decide sending DBus message to
+    // dlcservice on an install/update completion.
+    bool updated = true;
   };
 
   // Setters and getters for the various properties.
@@ -232,6 +235,9 @@
   // request parameters.
   virtual bool IsDlcAppId(const std::string& app_id) const;
 
+  // If the App ID is a DLC App ID will set to no update.
+  void SetDlcNoUpdate(const std::string& app_id);
+
   // Suggested defaults
   static const char kOsVersion[];
   static const int64_t kDefaultMinUpdateChecks = 0;