Bug 1192925: Test that system add-ons are marked as un-uninstallable and un-upgradable. r=rhelmer

--HG--
extra : commitid : GCPMXAg0BHU
extra : rebase_source : a604758512d1449c506eefd5b07930df040b086e

toolkit/mozapps/extensions/test/xpcshell/test_system_reset.js

@@ -39,6 +39,8 @@ function* check_installed(inProfile, ...versions) {
       do_check_eq(addon.version, versions[i]);
       do_check_true(addon.isActive);
       do_check_false(addon.foreignInstall);
+      do_check_false(hasFlag(addon.permissions, AddonManager.PERM_CAN_UPGRADE));
+      do_check_false(hasFlag(addon.permissions, AddonManager.PERM_CAN_UNINSTALL));
 
       // Verify the add-ons file is in the right place
       let file = expectedDir.clone();