MOZ_REQUIRE_SIGNING:
//здесь твои данные\toolkit\modules\AppConstants.jsm"
  false,
//тоже\toolkit\modules\AppConstants.jsm"

  MOZ_ALLOW_LEGACY_EXTENSIONS:
//--------------\toolkit\modules\AppConstants.jsm"
  true,
//--------------\toolkit\modules\AppConstants.jsm"

.addon:not([signatures="warning"]) .warning,
.addon:not([notification="warning"]) .warning,
.addon:not([notification="error"]) .error,
.addon:not([notification="info"]) .info,
.addon:not([pending]) .pending,
.addon:not([upgrade="true"]) .update-postfix,
.addon[active="true"] .disabled-postfix,
.addon[pending="install"] .update-postfix,
.addon[pending="install"] .disabled-postfix,
.addon[legacy="false"] .legacy-warning,
.addon[legacy="true"] .legacy-warning,
#detail-view:not([signatures="warning"]) .warning,
#detail-view:not([notification="warning"]) .warning,
#detail-view:not([notification="error"]) .error,
#detail-view:not([notification="info"]) .info,
#detail-view:not([pending]) .pending,
#detail-view:not([upgrade="true"]) .update-postfix,
#detail-view[active="true"] .disabled-postfix,
#detail-view[legacy="false"] .legacy-warning,
#detail-view[legacy="true"] .legacy-warning,
#detail-view[loading] .detail-view-container,
#detail-view:not([loading]) .alert-container,
.detail-row:not([value]),
#search-list[remote="false"] #search-allresults-link,
#legacy-list .addon .disabled-postfix {
  display: none;
}

addEventListener("popupshowing", {
    handleEvent(e) {
        if (e.target.id != "placesContext" || this.shouldHide(e.target))
            return;
        var add, menuitem = document.createElement("menuitem");
        menuitem.setAttribute("label", "Восстановить иконки всех закладок");
        menuitem.setAttribute("oncommand", "handleCommand();");
        menuitem.handleCommand = this.cmd.bind(this);
        (add = e => e.target.querySelector(
            "#placesContext_sortBy\\:name"
        ).before(menuitem))(e, menuitem);
        addDestructor(() => menuitem.remove());

        this.handleEvent = e => {
            if (e.target.id != "placesContext") return;
            var hide = this.shouldHide(e.target);
            if (e.target.contains(menuitem) ^ hide) return;
            hide ? menuitem.remove() : add(e, menuitem);
        }
    },
    shouldHide(popup) {
        var tn = popup.triggerNode;
        if (!tn || tn.id == "PlacesChevron") return true;
        var node = tn.nodeName == "treechildren"
            ? tn.parentNode.selectedNode
            : tn._placesNode || tn._placesView.result.root;

        var trg = node && (node.type == node.RESULT_TYPE_FOLDER
            || node.type == node.RESULT_TYPE_FOLDER_SHORTCUT)
        if (trg) this.guid = PlacesUtils.getConcreteItemGuid(node);
        return !trg;
    },
    async cmd() {
        var res = await PlacesUtils.promiseBookmarksTree(this.guid);
        if (!("children" in res)) return;
        var set = new Set();
        for(var child of res.children) if (
            child.typeCode == PlacesUtils.bookmarks.TYPE_BOOKMARK
            && child.uri.startsWith("http")
        )
            try {set.add("http://" + new URL(child.uri).hostname);} catch(ex) {}
        set.size && this.start([...set]);
    },
    start(urls) {
        alert(urls.join("\n"));
    }
}, true);

(popup => addEventListener("popupshowing", function ps() {
    removeEventListener("popupshowing", ps, false, popup);
    var append = (name, parent, attrs) => {
        var node = document.createElement(name);
        for(var attr in attrs) node.setAttribute(attr, attrs[attr]);
        return parent.appendChild(node);
    }
    var menu = append("menu", popup, {
        label: "Панель Закладок",
        id: "context-bookmarkstoolbar",
        class: "menu-iconic bookmark-item",
        image: "chrome://browser/skin/places/bookmarksToolbar.svg"
    });
    popup = append("menupopup", menu, {
        placespopup: true,
        tooltip: "bhTooltip",
        id: menu.id + "-popup",
        context: "placesContext",
        popupsinherittooltip: true,
        oncommand: "BookmarksEventHandler.onCommand(event);",
        onmouseup: "BookmarksEventHandler.onMouseUp(event);",
        onclick: "BookmarksEventHandler.onClick(event, this.parentNode._placesView);",
        onpopupshowing: "this.parentNode._placesView || new PlacesMenu" +
            `(event, "place:parent=${PlacesUtils.bookmarks.toolbarGuid}");`
    });
    addDestructor(() => menu.remove(menu._placesView && menu._placesView.uninit()));

    var context = document.getElementById("placesContext");
    var hideContext = () => context.state == "open" && context.hidePopup();
    addEventListener("popupshowing", hideContext, false, popup);
    popup.onauxclick = e => {
        if (e.button != 2 || e.target.nodeName != "menuitem")
            return;
        e.preventDefault();
        hideContext();
        context.openPopup(e.target, {
            triggerEvent: e,
            isContextMenu: true,
            position: "after_start",
            x: e.screenX - e.target.boxObject.screenX
        });
    }
}, false, popup || 1))(document.getElementById("contentAreaContextMenu"));