function callback(error, rulePayload)
        {
            this._pendingCommandsMajorState.pop();
            if (error) {
                // Invalid syntax for a selector
                failureCallback();
            } else {
                this._domModel.markUndoableState();
                this._computeMatchingSelectors(rulePayload, node.id, successCallback, failureCallback);
            }
        }
@param {?Protocol.Error} error
@param {!CSSAgent.CSSRule} rulePayload
@this {WebInspector.CSSStyleModel}