var fp = makeFilePicker();
fp.init(window, "Укажите файл для импорта журнала", fp.modeOpen);
fp.appendFilter("Text files","*.txt");

function imp(fpRes) {
    if (fpRes != fp.returnOK) return;

    var start = Date.now();
    var reader = new FileReader();
    reader.onload = function() {

        var places = [];
        var strs = reader.result.split("\n");
        strs.forEach(function(str) {

            var [dateStr, url] = str.split("\t");
            var [day, time] = dateStr.split(" ");
            var [D, M, Y] = day.split("-");
            var [h, m, s] = time.split(":");

            var date = new Date(Y, --M, D, h, m, s);
            try { var uri = Services.io.newURI(url, null, null) } catch(ex) { return; }

            places.push({
                uri: uri,
                visits: [{
                    transitionType: Ci.nsINavHistoryService.TRANSITION_LINK,
                    visitDate: date.getTime() * 1000
                }]
            });
        });
        //PlacesUtils.asyncHistory.updatePlaces(places);
        PlacesUtils.asyncHistory.updatePlaces(places, {
            errs: 0,
            ress: 0,
            handleError: function() this.errs++,
            handleResult: function() this.ress++,
            handleCompletion: function() alert([
                "DONE (" + (Date.now() - start)/1000 + " s)\n",
                "Total: " + strs.length,
                "Places: " + places.length,
                "        Success: " + this.ress,
                "        Errors: " + this.errs
            ].join("\n"))
        });
    }
    reader.readAsText(File(fp.file));
}
"nsIFilePickerShownCallback" in Ci ? fp.open({done: imp}) : imp(fp.show());