function receivedPropertyNamesFromEval(notRelevant, wasThrown, result)
        {
            if (result && !wasThrown)
                receivedPropertyNames.call(this, result.value);
            else
                completionsReadyCallback([]);
        }
@param {?WebInspector.RemoteObject} notRelevant
@param {boolean} wasThrown
@param {?RuntimeAgent.RemoteObject=} result
@this {WebInspector.ExecutionContext}