- var newDatabaseNames = {};
- for (var i = 0; i < databaseNames.length; ++i)
- newDatabaseNames[databaseNames[i]] = true;
- var oldDatabaseNames = {};
- for (var i = 0; i < this._databaseNamesBySecurityOrigin[securityOrigin].length; ++i)
- oldDatabaseNames[this._databaseNamesBySecurityOrigin[securityOrigin][i]] = true;
+ var newDatabaseNames = databaseNames.keySet();
+ var oldDatabaseNames = this._databaseNamesBySecurityOrigin[securityOrigin].keySet();