function callback(error, stylePayload)
        {
            this.ownerStyle._cssModel._pendingCommandsMajorState.pop();
            if (!error) {
                if (majorChange)
                    this.ownerStyle._cssModel._domModel.markUndoableState();
                var style = WebInspector.CSSStyleDeclaration.parsePayload(this.ownerStyle._cssModel, stylePayload);
                var newProperty = style.allProperties[this.index];

                if (newProperty && this.disabled && !propertyText.match(/^\s*$/)) {
                    newProperty.setDisabled(false, enabledCallback);
                    return;
                }
                if (userCallback)
                    userCallback(style);
            } else {
                if (userCallback)
                    userCallback(null);
            }
        }
@param {?string} error
@param {!CSSAgent.CSSStyle} stylePayload
@this {WebInspector.CSSProperty}