Revert "Don't allow permission change to runtime"

                        return;

                    }

                    // Prevent apps to change permission protection level to dangerous

                    // from any other type as this would allow a privilege escalation

                    // where an app adds a normal/signature permission in other app's

                    // group and later redefines it as dangerous leading to the group

                    // auto-grant.

                    final int permissionCount = pkg.permissions.size();

                    for (int i = 0; i < permissionCount; i++) {

                        PackageParser.Permission permission = pkg.permissions.get(i);

                        if ((permission.info.protectionLevel & PermissionInfo.PROTECTION_MASK_BASE)

                                == PermissionInfo.PROTECTION_DANGEROUS) {

                            BasePermission bp = mSettings.mPermissions.get(permission.info.name);

                            if (bp != null && !bp.isRuntime()) {

                                res.setError(PackageManager.INSTALL_PARSE_FAILED_BAD_MANIFEST,

                                        "Package " + pkg.packageName + " trying to change a "

                                                + "non-runtime permission " + permission.info.name

                                                + " to runtime.");

                                return;

                            }

                        }

                    }

                    // Prevent installing of child packages

                    if (oldPackage.parentPackage != null) {

                        res.setError(PackageManager.INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME,