diff --git a/mozilla/toolkit/mozapps/extensions/public/nsIExtensionManager.idl b/mozilla/toolkit/mozapps/extensions/public/nsIExtensionManager.idl
index 8c04303fe31..ce1eb6c3eef 100644
--- a/mozilla/toolkit/mozapps/extensions/public/nsIExtensionManager.idl
+++ b/mozilla/toolkit/mozapps/extensions/public/nsIExtensionManager.idl
@@ -61,6 +61,8 @@ interface nsIExtensionManager : nsISupports
    */
   boolean checkForMismatches();
 
+  void handleCommandLineArgs();
+
   // Installing Extensions
   const unsigned long FLAG_INSTALL_PROFILE = 0x01;
   const unsigned long FLAG_INSTALL_GLOBAL  = 0x02;