function openCallback(accepted)
        {
            if (!accepted)
                return;
            var progressIndicator = new WebInspector.ProgressIndicator();
            this._progressBarContainer.appendChild(progressIndicator.element);
            var harWriter = new WebInspector.HARWriter();
            harWriter.write(stream, this._harRequests(), progressIndicator);
        }
@param {boolean} accepted
@this {WebInspector.NetworkLogView}