From b0210f373ffbd85c8b5b6f50c477470f5f2fbce7 Mon Sep 17 00:00:00 2001
From: adamp01 <47503375+adamp01@users.noreply.github.com>
Date: Wed, 2 Mar 2022 10:06:14 +0000
Subject: [PATCH] [WFX-347] Remove redundant extensibles code.

To be squashed with [WFX-171].
---
 .../base/content/appmenu-viewcache.inc.xhtml  |   2 +-
 browser/base/content/browser-menubar.inc      |   2 +-
 browser/base/content/browser.css              |   2 +-
 browser/base/content/main-popupset.inc.xhtml  |   2 +-
 browser/base/content/tabbrowser.js            |   8 -
 browser/components/preferences/main.inc.xhtml |   4 +-
 .../components/preferences/privacy.inc.xhtml  |   4 +-
 .../builtins/appmenu/restartbutton.inc        |   0
 .../builtins/context/copyurl.inc              |   4 +-
 .../builtins/menubar/restartbutton.inc        |   0
 .../builtins/preferences/otherfeatures.inc    |   0
 .../preferences/privacyconnections.inc        |   0
 .../preferences/privacypermissions.inc        |   0
 .../builtins/preferences/tabfeatures.inc      |   0
 .../{extension => }/css/tabfeatures.inc.css   |   0
 .../experiment-apis/extensibles/api.js        | 378 ------------
 .../experiment-apis/extensibles/schema.json   | 544 ------------------
 .../extensibles/extension/manifest.json       |  21 +-
 .../extension/privatetab/background.js        | 344 -----------
 .../extension/statusbar/background.js         |  99 ----
 .../extension/tabfeatures/background.js       |   9 -
 21 files changed, 11 insertions(+), 1412 deletions(-)
 rename browser/extensions/extensibles/{extension => }/builtins/appmenu/restartbutton.inc (100%)
 rename browser/extensions/extensibles/{extension => }/builtins/context/copyurl.inc (64%)
 rename browser/extensions/extensibles/{extension => }/builtins/menubar/restartbutton.inc (100%)
 rename browser/extensions/extensibles/{extension => }/builtins/preferences/otherfeatures.inc (100%)
 rename browser/extensions/extensibles/{extension => }/builtins/preferences/privacyconnections.inc (100%)
 rename browser/extensions/extensibles/{extension => }/builtins/preferences/privacypermissions.inc (100%)
 rename browser/extensions/extensibles/{extension => }/builtins/preferences/tabfeatures.inc (100%)
 rename browser/extensions/extensibles/{extension => }/css/tabfeatures.inc.css (100%)
 delete mode 100644 browser/extensions/extensibles/extension/experiment-apis/extensibles/api.js
 delete mode 100644 browser/extensions/extensibles/extension/experiment-apis/extensibles/schema.json
 delete mode 100644 browser/extensions/extensibles/extension/privatetab/background.js
 delete mode 100644 browser/extensions/extensibles/extension/statusbar/background.js
 delete mode 100644 browser/extensions/extensibles/extension/tabfeatures/background.js

diff --git a/browser/base/content/appmenu-viewcache.inc.xhtml b/browser/base/content/appmenu-viewcache.inc.xhtml
index fd39a04c0eafb..c0aad0071a44e 100644
--- a/browser/base/content/appmenu-viewcache.inc.xhtml
+++ b/browser/base/content/appmenu-viewcache.inc.xhtml
@@ -348,7 +348,7 @@
                      oncommand="PanelUI.showSubView('PanelUI-helpView', this)"/>
 #ifndef XP_MACOSX
       <toolbarseparator/>
-#include ../../extensions/extensibles/extension/builtins/appmenu/restartbutton.inc
+#include ../../extensions/extensibles/builtins/appmenu/restartbutton.inc
       <toolbarbutton id="appMenu-quit-button2"
                      class="subviewbutton"
                      data-l10n-id="appmenuitem-exit2"
diff --git a/browser/base/content/browser-menubar.inc b/browser/base/content/browser-menubar.inc
index ed03aa49e6493..5da891c2affee 100644
--- a/browser/base/content/browser-menubar.inc
+++ b/browser/base/content/browser-menubar.inc
@@ -80,7 +80,7 @@
                           type="checkbox"
                           command="cmd_toggleOfflineStatus" data-l10n-id="menu-file-go-offline"/>
 #ifdef XP_MACOSX
-  #include ../../extensions/extensibles/extension/builtins/menubar/restartbutton.inc
+  #include ../../extensions/extensibles/builtins/menubar/restartbutton.inc
 #endif
                 <menuitem id="menu_FileQuitItem"
 #ifdef XP_MACOSX
diff --git a/browser/base/content/browser.css b/browser/base/content/browser.css
index e63d626db3b59..3d349089343d9 100644
--- a/browser/base/content/browser.css
+++ b/browser/base/content/browser.css
@@ -1644,4 +1644,4 @@ toolbar[keyNav=true]:not([collapsed=true], [customizing=true]) toolbartabstop {
  * End Dialogs
  */
 
-%include ../../extensions/extensibles/extension/css/tabfeatures.inc.css
\ No newline at end of file
+%include ../../extensions/extensibles/css/tabfeatures.inc.css
\ No newline at end of file
diff --git a/browser/base/content/main-popupset.inc.xhtml b/browser/base/content/main-popupset.inc.xhtml
index e721baf15e971..3ab1132242aaf 100644
--- a/browser/base/content/main-popupset.inc.xhtml
+++ b/browser/base/content/main-popupset.inc.xhtml
@@ -28,7 +28,7 @@
               oncommand="duplicateTabIn(TabContextMenu.contextTab, 'tab');"/>
     <menuitem id="context_duplicateTabs" data-lazy-l10n-id="duplicate-tabs"
               oncommand="TabContextMenu.duplicateSelectedTabs();"/>
-#include ../../extensions/extensibles/extension/builtins/context/copyurl.inc
+#include ../../extensions/extensibles/builtins/context/copyurl.inc
     <menuseparator/>
     <menuitem id="context_bookmarkSelectedTabs"
               hidden="true"
diff --git a/browser/base/content/tabbrowser.js b/browser/base/content/tabbrowser.js
index 77e00e32a1a05..e47c81541bfab 100644
--- a/browser/base/content/tabbrowser.js
+++ b/browser/base/content/tabbrowser.js
@@ -7293,12 +7293,4 @@ var TabContextMenu = {
       sharingService.openSharingPreferences();
     }
   },
-
-  copyTabUrl(uri) {
-    Services.obs.notifyObservers(null, "menuitem-copyurl-extension", uri);
-  },
-
-  copyAllTabUrls() {
-    Services.obs.notifyObservers(null, "menuitem-copyallurls-extension");
-  },
 };
diff --git a/browser/components/preferences/main.inc.xhtml b/browser/components/preferences/main.inc.xhtml
index cb919fa3179cb..324edc0eae339 100644
--- a/browser/components/preferences/main.inc.xhtml
+++ b/browser/components/preferences/main.inc.xhtml
@@ -117,7 +117,7 @@
       </hbox>
     </vbox>
 
-#include ../../extensions/extensibles/extension/builtins/preferences/tabfeatures.inc
+#include ../../extensions/extensibles/builtins/preferences/tabfeatures.inc
 
 </groupbox>
 <hbox id="languageAndAppearanceCategory"
@@ -337,7 +337,7 @@
           preference="layout.spellcheckDefault"/>
 </groupbox>
 
-#include ../../extensions/extensibles/extension/builtins/preferences/otherfeatures.inc
+#include ../../extensions/extensibles/builtins/preferences/otherfeatures.inc
 
 <!-- Files and Applications -->
 <hbox id="filesAndApplicationsCategory"
diff --git a/browser/components/preferences/privacy.inc.xhtml b/browser/components/preferences/privacy.inc.xhtml
index b9e6bf6ee4fd7..4a011dc621c7b 100644
--- a/browser/components/preferences/privacy.inc.xhtml
+++ b/browser/components/preferences/privacy.inc.xhtml
@@ -320,7 +320,7 @@
   </vbox>
 </groupbox>
 
-#include ../../extensions/extensibles/extension/builtins/preferences/privacyconnections.inc
+#include ../../extensions/extensibles/builtins/preferences/privacyconnections.inc
 
 <!-- Site Data -->
 <groupbox id="siteDataGroup" data-category="panePrivacy" hidden="true" aria-describedby="totalSiteDataSize">
@@ -825,7 +825,7 @@
     </hbox>
   </hbox>
 
-#include ../../extensions/extensibles/extension/builtins/preferences/privacypermissions.inc
+#include ../../extensions/extensibles/builtins/preferences/privacypermissions.inc
 
 </groupbox>
 
diff --git a/browser/extensions/extensibles/extension/builtins/appmenu/restartbutton.inc b/browser/extensions/extensibles/builtins/appmenu/restartbutton.inc
similarity index 100%
rename from browser/extensions/extensibles/extension/builtins/appmenu/restartbutton.inc
rename to browser/extensions/extensibles/builtins/appmenu/restartbutton.inc
diff --git a/browser/extensions/extensibles/extension/builtins/context/copyurl.inc b/browser/extensions/extensibles/builtins/context/copyurl.inc
similarity index 64%
rename from browser/extensions/extensibles/extension/builtins/context/copyurl.inc
rename to browser/extensions/extensibles/builtins/context/copyurl.inc
index a84c10ba92a52..b37ecafb1c2da 100644
--- a/browser/extensions/extensibles/extension/builtins/context/copyurl.inc
+++ b/browser/extensions/extensibles/builtins/context/copyurl.inc
@@ -1,14 +1,14 @@
 <menuitem
     id="context_copyTabUrl"
     class="tabFeature"
-    oncommand="TabContextMenu.copyTabUrl(TabContextMenu.contextTab.linkedBrowser.currentURI.spec);"
+    oncommand="TabFeatures.copyTabUrl(TabContextMenu.contextTab.linkedBrowser.currentURI.spec, window);"
     data-lazy-l10n-id="copy-url"
     preference="browser.tabs.copyurl"
 />
 <menuitem
     id="context_copyAllTabUrls"
     class="tabFeature"
-    oncommand="TabContextMenu.copyAllTabUrls();"
+    oncommand="TabFeatures.copyAllTabUrls(window);"
     data-lazy-l10n-id="copy-all-urls"
     preference="browser.tabs.copyallurls"
 />
\ No newline at end of file
diff --git a/browser/extensions/extensibles/extension/builtins/menubar/restartbutton.inc b/browser/extensions/extensibles/builtins/menubar/restartbutton.inc
similarity index 100%
rename from browser/extensions/extensibles/extension/builtins/menubar/restartbutton.inc
rename to browser/extensions/extensibles/builtins/menubar/restartbutton.inc
diff --git a/browser/extensions/extensibles/extension/builtins/preferences/otherfeatures.inc b/browser/extensions/extensibles/builtins/preferences/otherfeatures.inc
similarity index 100%
rename from browser/extensions/extensibles/extension/builtins/preferences/otherfeatures.inc
rename to browser/extensions/extensibles/builtins/preferences/otherfeatures.inc
diff --git a/browser/extensions/extensibles/extension/builtins/preferences/privacyconnections.inc b/browser/extensions/extensibles/builtins/preferences/privacyconnections.inc
similarity index 100%
rename from browser/extensions/extensibles/extension/builtins/preferences/privacyconnections.inc
rename to browser/extensions/extensibles/builtins/preferences/privacyconnections.inc
diff --git a/browser/extensions/extensibles/extension/builtins/preferences/privacypermissions.inc b/browser/extensions/extensibles/builtins/preferences/privacypermissions.inc
similarity index 100%
rename from browser/extensions/extensibles/extension/builtins/preferences/privacypermissions.inc
rename to browser/extensions/extensibles/builtins/preferences/privacypermissions.inc
diff --git a/browser/extensions/extensibles/extension/builtins/preferences/tabfeatures.inc b/browser/extensions/extensibles/builtins/preferences/tabfeatures.inc
similarity index 100%
rename from browser/extensions/extensibles/extension/builtins/preferences/tabfeatures.inc
rename to browser/extensions/extensibles/builtins/preferences/tabfeatures.inc
diff --git a/browser/extensions/extensibles/extension/css/tabfeatures.inc.css b/browser/extensions/extensibles/css/tabfeatures.inc.css
similarity index 100%
rename from browser/extensions/extensibles/extension/css/tabfeatures.inc.css
rename to browser/extensions/extensibles/css/tabfeatures.inc.css
diff --git a/browser/extensions/extensibles/extension/experiment-apis/extensibles/api.js b/browser/extensions/extensibles/extension/experiment-apis/extensibles/api.js
deleted file mode 100644
index 9a0d290dd556a..0000000000000
--- a/browser/extensions/extensibles/extension/experiment-apis/extensibles/api.js
+++ /dev/null
@@ -1,378 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-
-/* globals ExtensionAPI Services EventManager */
-
-const { AppConstants } = ChromeUtils.import(
-  "resource://gre/modules/AppConstants.jsm"
-);
-
-const { PanelMultiView } = ChromeUtils.import(
-  "resource:///modules/PanelMultiView.jsm"
-);
-
-ChromeUtils.defineModuleGetter(
-  this,
-  "BrowserUtils",
-  "resource:///modules/BrowserUtils.jsm"
-);
-
-ChromeUtils.defineModuleGetter(
-  this,
-  "PrefUtils",
-  "resource:///modules/PrefUtils.jsm"
-);
-
-ChromeUtils.defineModuleGetter(
-  this,
-  "StatusBar",
-  "resource:///modules/StatusBar.jsm"
-);
-
-ChromeUtils.defineModuleGetter(
-  this,
-  "PrivateTab",
-  "resource:///modules/PrivateTab.jsm"
-);
-
-ChromeUtils.defineModuleGetter(
-  this,
-  "TabFeatures",
-  "resource:///modules/TabFeatures.jsm"
-);
-
-const { UICustomizations } = ChromeUtils.import(
-  "resource:///modules/UICustomizations.jsm"
-);
-
-ChromeUtils.defineModuleGetter(
-  this,
-  "PrefsExt",
-  "resource:///modules/AboutPreferencesExtension.jsm"
-);
-
-this.extensibles = class extends ExtensionAPI {
-  getAPI(context) {
-    return {
-      extensibles: {
-        utils: {
-          // internal functions/props
-          get mostRecentWindow() {
-            return Services.wm.getMostRecentWindow("navigator:browser");
-          },
-
-          get document() {
-            return Services.wm.getMostRecentWindow("navigator:browser")
-              .document;
-          },
-
-          get content() {
-            return Services.wm.getMostRecentWindow("navigator:browser").content
-              .document;
-          },
-
-          createElement(aDoc, aTag, aAttrs) {
-            // Create element
-            let el = aDoc.createXULElement(aTag);
-            for (let att in aAttrs) {
-              // don't set null attrs
-              if (aAttrs[att]) {
-                el.setAttribute(att, aAttrs[att]);
-              }
-            }
-            return el;
-          },
-
-          // api endpoints
-          createAndPositionElement(
-            aTag,
-            aAttrs,
-            aAdjacentTo,
-            aPosition,
-            aContent = false
-          ) {
-            let doc = this.document;
-            if (aContent) {
-              doc = this.content;
-            }
-            // Create element
-            let el = this.createElement(doc, aTag, aAttrs);
-            // Place it in certain location
-            let pos = doc.getElementById(aAdjacentTo);
-            if (aPosition) {
-              // App Menu items are not retrieved successfully with doc.getElementById
-              if (!pos) {
-                pos = PanelMultiView.getViewNode(this.document, aAdjacentTo);
-              }
-              // If neither method to retrieve a positional element succeeded
-              // don't attempt to insert as it will fail
-              if (pos) {
-                pos.insertAdjacentElement(aPosition, el);
-              }
-            } else if (aAdjacentTo == "gNavToolbox") {
-              this.mostRecentWindow.gNavToolbox.appendChild(el);
-            } else {
-              pos.appendChild(el);
-            }
-          },
-
-          createElementAs(aTag, aAttrs, aSetAs) {
-            let doc = this.document;
-            // create element
-            if (aSetAs == "win.statusbar.node") {
-              this.mostRecentWindow.statusbar.node = this.createElement(
-                doc,
-                aTag,
-                aAttrs
-              );
-            } else if (aSetAs == "win.statusbar.textNode") {
-              this.mostRecentWindow.statusbar.textNode = this.createElement(
-                doc,
-                aTag,
-                aAttrs
-              );
-            }
-          },
-
-          async elementExistsInContent(aId) {
-            return this.content.getElementById(aId);
-          },
-
-          async getElementAttr(aId, aAttr) {
-            let doc = this.document;
-            let el = doc.getElementById(aId);
-            return el.getAttribute(aAttr);
-          },
-
-          setAttributes(aId, aAttrs) {
-            let el = this.document.getElementById(aId);
-            Object.entries(aAttrs).forEach(([id, val]) => {
-              el.setAttribute(id, val);
-            });
-          },
-
-          isTopWindowPrivate() {
-            let win = this.mostRecentWindow;
-            return win.PrivateBrowsingUtils.isWindowPrivate(win);
-          },
-
-          windowIsChromeWindow() {
-            return (
-              this.mostRecentWindow.location.href ==
-              "chrome://browser/content/browser.xhtml"
-            );
-          },
-
-          async getContainer(aName) {
-            let win = this.mostRecentWindow;
-            if (!win.privateTab.container) {
-              let container = win.privateTab.initContainer(aName);
-              win.privateTab.container = container;
-            }
-            // rebuild container obj as cloning/returning privateTab.containber returns undefined
-            let returnObj = {};
-            Object.entries(win.privateTab.container).forEach(([key, value]) => {
-              returnObj[key] = value;
-            });
-            return returnObj;
-          },
-
-          async addElementListener(aId, aEvent, aSubject) {
-            let func;
-            switch (aSubject) {
-              case "places":
-                func = PrivateTab.placesContext;
-                break;
-              case "showContent":
-                func = PrivateTab.contentContext;
-                break;
-              case "hideContent":
-                func = PrivateTab.hideContext;
-                break;
-              case "openLink":
-                func = PrivateTab.openLink;
-                break;
-              case "toggleTab":
-                func = PrivateTab.tabContext;
-                break;
-              case "toolbarClick":
-                func = PrivateTab.toolbarClick;
-                break;
-              case "tabContext":
-                func = TabFeatures.tabContext;
-                break;
-            }
-            this.document.getElementById(aId).addEventListener(aEvent, func);
-          },
-
-          registerPref(aName, aValue) {
-            // Add the below if we move from boolean to string aValue type
-            // if (aValue === "true" || aValue === "false") {
-            //   aValue = aValue === "true";
-            // }
-            PrefUtils.set(aName, aValue, true);
-          },
-
-          addPreference(aId, aType) {
-            this.mostRecentWindow.content.Preferences.add({
-              id: aId,
-              type: aType,
-            });
-          },
-
-          async getPlatform() {
-            return AppConstants.platform;
-          },
-
-          async append(aId, aText) {
-            this.content.getElementById(aId).append(aText);
-          },
-
-          async initialized(aName) {
-            return typeof this.mostRecentWindow[aName] == "object";
-          },
-        },
-        statusbar: {
-          // internal functions/props
-          get mostRecentWindow() {
-            return Services.wm.getMostRecentWindow("navigator:browser");
-          },
-
-          get document() {
-            return Services.wm.getMostRecentWindow("navigator:browser")
-              .document;
-          },
-          createElement(aDoc, aTag, aAttrs) {
-            // Create element
-            let el = aDoc.createXULElement(aTag);
-            for (let att in aAttrs) {
-              // don't set null attrs
-              if (aAttrs[att]) {
-                el.setAttribute(att, aAttrs[att]);
-              }
-            }
-            return el;
-          },
-          registerStatusBar() {
-            let win = this.mostRecentWindow;
-            if (!win.statusBar) {
-              win.statusBar = StatusBar;
-              win.statusBar.initPrefListeners(); // done
-              win.statusBar.setStyle();
-              win.statusBar.registerArea("status-bar"); //done
-            }
-          },
-
-          configureStatusBar(aId) {
-            let win = this.mostRecentWindow;
-            if (aId == "status-dummybar") {
-              win.statusBar.configureDummyBar(win, aId);
-            } else if (aId == "status-bar") {
-              win.statusBar.configureStatusBar(win);
-            }
-          },
-
-          configureResizer() {
-            let win = this.mostRecentWindow;
-            let { document } = win;
-            let resizerContainer = this.createElement(document, "toolbaritem", {
-              id: "resizer-container",
-            });
-            let resizer = this.createElement(document, "resizer");
-            resizerContainer.appendChild(resizer);
-            win.statusbar.node.appendChild(resizerContainer);
-          },
-
-          overrideStatusPanelLabel() {
-            let win = this.mostRecentWindow;
-            win.statusBar.overrideStatusPanelLabel(win);
-          },
-
-          configureBottomBox() {
-            let win = this.mostRecentWindow;
-            win.statusBar.configureBottomBox(win);
-          },
-        },
-        privatetab: {
-          // internal functions/props
-          get mostRecentWindow() {
-            return Services.wm.getMostRecentWindow("navigator:browser");
-          },
-
-          get document() {
-            return Services.wm.getMostRecentWindow("navigator:browser")
-              .document;
-          },
-          registerPrivateTab(aName, aAttrs) {
-            let win = this.mostRecentWindow;
-            if (!win.privateTab) {
-              win.privateTab = PrivateTab;
-              if (!win.privateTab.container) {
-                win.privateTab.container = win.privateTab.initContainer(aName); //done
-              }
-              win.privateTab.setStyle(win); //done
-              win.privateTab.overridePlacesUIUtils(); //done
-              win.privateTab.createPrivateWidget(win, aAttrs); //done
-              win.privateTab.setPrivateObserver(); //done
-            }
-          },
-
-          async updatePrivateMaskId(aId) {
-            let privateMask = this.document.getElementsByClassName(
-              "private-browsing-indicator"
-            )[0];
-            privateMask.id = aId;
-          },
-
-          async initPrivateTabListeners() {
-            //done
-            let win = this.mostRecentWindow;
-            win.privateTab.initPrivateTabListeners(win);
-          },
-
-          async initCustomFunctions() {
-            //done
-            let win = this.mostRecentWindow;
-            win.privateTab.initCustomFunctions(win);
-          },
-        },
-        tabfeatures: {
-          // internal functions/props
-          get mostRecentWindow() {
-            return Services.wm.getMostRecentWindow("navigator:browser");
-          },
-
-          get document() {
-            return Services.wm.getMostRecentWindow("navigator:browser")
-              .document;
-          },
-
-          copyUrlCommand() {
-            let observer = (subject, topic, data) => {
-              TabFeatures.copyTabUrl(data, this.mostRecentWindow);
-            };
-            Services.obs.addObserver(observer, "menuitem-copyurl-extension");
-          },
-
-          copyAllUrlsCommand() {
-            let observer = (subject, topic, data) => {
-              TabFeatures.copyAllTabUrls(this.mostRecentWindow);
-            };
-            Services.obs.addObserver(
-              observer,
-              "menuitem-copyallurls-extension"
-            );
-          },
-        },
-        prefsext: {
-          setStyle() {
-            BrowserUtils.setStyle(PrefsExt.style);
-          },
-        },
-      },
-    };
-  }
-};
diff --git a/browser/extensions/extensibles/extension/experiment-apis/extensibles/schema.json b/browser/extensions/extensibles/extension/experiment-apis/extensibles/schema.json
deleted file mode 100644
index 4db738f4aca16..0000000000000
--- a/browser/extensions/extensibles/extension/experiment-apis/extensibles/schema.json
+++ /dev/null
@@ -1,544 +0,0 @@
-[
-  {
-    "namespace": "extensibles.utils",
-    "description": "API implementing utility features",
-    "functions": [
-      {
-        "name": "createAndPositionElement",
-        "type": "function",
-        "async": false,
-        "description": "Creates a tab context menu item.",
-        "parameters": [
-          {
-            "name": "aTag",
-            "type": "string",
-            "description": "The tag of the element."
-          },
-          {
-            "name": "aAttrs",
-            "type": "object",
-            "description": "The attributes of the element.",
-            "properties": {
-              "id": {
-                "type": "string",
-                "optional": true,
-                "description": "The id of the element being created."
-              },
-              "class": {
-                "type": "string",
-                "optional": true,
-                "description": "The class of the element being created."
-              },
-              "accesskey": {
-                "type": "string",
-                "optional": true,
-                "description": "The access key for the element."
-              },
-              "oncommand": {
-                "type": "string",
-                "optional": true,
-                "description": "The name of the function to execute oncommand."
-              },
-              "onclick": {
-                "type": "string",
-                "optional": true,
-                "description": "The name of the function to execute when the created element is clicked."
-              },
-              "label": {
-                "type": "string",
-                "optional": true,
-                "description": "The label of the element being created."
-              },
-              "key": {
-                "type": "string",
-                "optional": true,
-                "description": "The key to activate."
-              },
-              "modifiers": {
-                "type": "string",
-                "optional": true,
-                "description": "The modifiers for the activation key."
-              },
-              "acceltext": {
-                "type": "string",
-                "optional": true,
-                "description": "The shortcut text to display."
-              },
-              "hidden": {
-                "type": "boolean",
-                "optional": true,
-                "description": "The visibility status of the element."
-              },
-              "type": {
-                "type": "string",
-                "optional": true,
-                "description": "The element type."
-              },
-              "tooltiptext": {
-                "type": "string",
-                "optional": true,
-                "description": "The element tooltip text."
-              },
-              "toolbarname": {
-                "type": "string",
-                "optional": true,
-                "description": "The name of the toolbar."
-              },
-              "preference": {
-                "type": "string",
-                "optional": true,
-                "description": "The preference that controls visibility of the element."
-              },
-              "data-category": {
-                "type": "string",
-                "optional": true,
-                "description": "The data-category of the element."
-              },
-              "value": {
-                "type": "string",
-                "optional": true,
-                "description": "The value of the element."
-              }
-            }
-          },
-          {
-            "name": "aAdjacentTo",
-            "type": "string",
-            "description": "The id of the element that will be used to position the new element."
-          },
-          {
-            "name": "aPosition",
-            "type": "string",
-            "description": "The position relative to the target element. If no position is given the new element will be appeneded.",
-            "optional": true
-          },
-          {
-            "name": "aContent",
-            "type": "boolean",
-            "description": "True if elements should be created in window content document rather than window document.",
-            "optional": true
-          }
-        ]
-      },
-      {
-        "name": "createElementAs",
-        "type": "function",
-        "async": false,
-        "description": "Get the specified attribute from the given element id.",
-        "parameters": [
-          {
-            "name": "aTag",
-            "type": "string",
-            "description": "The id of the element to search for."
-          },
-          {
-            "name": "aAttrs",
-            "type": "object",
-            "description": "The attributes of the element.",
-            "properties": {
-              "id": {
-                "type": "string",
-                "optional": false,
-                "description": "The id of the element being created."
-              },
-              "customizable": {
-                "type": "string",
-                "optional": true,
-                "description": "Whether the element is customizable or not."
-              },
-              "context": {
-                "type": "string",
-                "optional": true,
-                "description": "The element context."
-              },
-              "mode": {
-                "type": "string",
-                "optional": true,
-                "description": "The element mode."
-              },
-              "flex": {
-                "type": "string",
-                "optional": true,
-                "description": "Is the element a flex container."
-              },
-              "width": {
-                "type": "string",
-                "optional": true,
-                "description": "The element width."
-              }
-            }
-          },
-          {
-            "name": "aSetAs",
-            "type": "string",
-            "description": "String identifier to determine what to set the created element as."
-          }
-        ]
-      },
-      {
-        "name": "elementExistsInContent",
-        "type": "function",
-        "async": true,
-        "description": "Attempt to retrieve the given element Id from the current content document.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The id of the element to search for."
-          }
-        ]
-      },
-      {
-        "name": "getElementAttr",
-        "type": "function",
-        "async": true,
-        "description": "Get the specified attribute from the given element id.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The id of the element to search for."
-          },
-          {
-            "name": "aAttr",
-            "type": "string",
-            "description": "The attribute of the element to retrieve."
-          }
-        ]
-      },
-      {
-        "name": "setAttributes",
-        "type": "function",
-        "async": false,
-        "description": "Set the specified attributes for the given element id.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The id of the element to search for."
-          },
-          {
-            "name": "aAttrs",
-            "type": "object",
-            "description": "The attributes of the element to set.",
-            "properties": {
-              "class": {
-                "type": "string",
-                "optional": true,
-                "description": "The class attribute to add to the element."
-              },
-              "preference": {
-                "type": "string",
-                "optional": true,
-                "description": "The preference that controls the elements action/visibility."
-              }
-            }
-          }
-        ]
-      },
-      {
-        "name": "registerPref",
-        "type": "function",
-        "async": false,
-        "description": "Register the given preference with the default branch.",
-        "parameters": [
-          {
-            "name": "aName",
-            "type": "string",
-            "description": "The name of the preferences being registered."
-          },
-          {
-            "name": "aValue",
-            "type": "boolean",
-            "description": "The value of the preferences being registered."
-          }
-        ]
-      },
-      {
-        "name": "addPreference",
-        "type": "function",
-        "async": false,
-        "description": "Add preferences to the Preferences object in the window content.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "Preference id."
-          },
-          {
-            "name": "aType",
-            "type": "string",
-            "description": "Preference type."
-          }
-        ]
-      },
-      {
-        "name": "isTopWindowPrivate",
-        "type": "function",
-        "async": false,
-        "description": "Returns bool val of top window privacy state.",
-        "parameters": []
-      },
-      {
-        "name": "getContainer",
-        "type": "function",
-        "async": true,
-        "description": "Get the container with name aName.",
-        "parameters": [
-          {
-            "name": "aName",
-            "type": "string",
-            "description": "The name of the container to retrieve."
-          }
-        ]
-      },
-      {
-        "name": "addElementListener",
-        "type": "function",
-        "async": true,
-        "description": "Add an event listener to the given element for the given event type.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The Id of the element to add a listener to."
-          },
-          {
-            "name": "aEvent",
-            "type": "string",
-            "description": "The event to listen for."
-          },
-          {
-            "name": "aSubject",
-            "type": "string",
-            "description": "The subject used to determine function."
-          }
-        ]
-      },
-      {
-        "name": "windowIsChromeWindow",
-        "type": "function",
-        "async": true,
-        "description": "Returns whether the current window is a ChromeWindow",
-        "parameters": []
-      },
-      {
-        "name": "getPlatform",
-        "type": "function",
-        "async": true,
-        "description": "Returns the current platform.",
-        "parameters": []
-      },
-      {
-        "name": "append",
-        "type": "function",
-        "async": true,
-        "description": "Append text to given element.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The id of the element to search for."
-          },
-          {
-            "name": "aText",
-            "type": "string",
-            "description": "The text to append."
-          }
-        ]
-      },
-      {
-        "name": "initialized",
-        "type": "function",
-        "async": true,
-        "description": "Returns a boolean indicating if aId is initialized in the current window.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The id of the object to search for in the current top window."
-          }
-        ]
-      }
-    ]
-  },
-  {
-    "namespace": "extensibles.statusbar",
-    "description": "API implementing status bar features",
-    "functions": [
-      {
-        "name": "registerStatusBar",
-        "type": "function",
-        "async": false,
-        "description": "Register StatusBar.jsm with the current top window.",
-        "parameters": []
-      },
-      {
-        "name": "configureStatusBar",
-        "type": "function",
-        "async": false,
-        "description": "Configure the status bar.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The id of the element to search for."
-          }
-        ]
-      },
-      {
-        "name": "configureResizer",
-        "type": "function",
-        "async": false,
-        "description": "Configure the resizer.",
-        "parameters": []
-      },
-      {
-        "name": "overrideStatusPanelLabel",
-        "type": "function",
-        "async": false,
-        "description": "Override StatusPanel.label.",
-        "parameters": []
-      },
-      {
-        "name": "configureBottomBox",
-        "type": "function",
-        "async": false,
-        "description": "Configure the bottom box.",
-        "parameters": []
-      }
-    ]
-  },
-  {
-    "namespace": "extensibles.privatetab",
-    "description": "API implementing private tab features",
-    "functions": [
-      {
-        "name": "registerPrivateTab",
-        "type": "function",
-        "async": true,
-        "description": "Register PrivateTab.jsm with the current top window.",
-        "parameters": [
-          {
-            "name": "aName",
-            "type": "string",
-            "description": "The name of the container to retrieve."
-          },
-          {
-            "name": "aAttrs",
-            "type": "object",
-            "description": "The attributes of the custom private tab widget.",
-            "properties": {
-              "id": {
-                "type": "string",
-                "optional": false,
-                "description": "The id of the element being created."
-              },
-              "class": {
-                "type": "string",
-                "optional": true,
-                "description": "The class of the element being created."
-              },
-              "oncommand": {
-                "type": "string",
-                "optional": true,
-                "description": "The name of the function to execute oncommand."
-              },
-              "label": {
-                "type": "string",
-                "optional": true,
-                "description": "The label of the element being created."
-              },
-              "tooltiptext": {
-                "type": "string",
-                "optional": true,
-                "description": "The element tooltip text."
-              }
-            }
-          }
-        ]
-      },
-      {
-        "name": "updatePrivateMaskId",
-        "type": "function",
-        "async": true,
-        "description": "Updates the private-browsing-indicator id.",
-        "parameters": [
-          {
-            "name": "aId",
-            "type": "string",
-            "description": "The updated id value."
-          }
-        ]
-      },
-      {
-        "name": "initPrivateTabListeners",
-        "type": "function",
-        "async": true,
-        "description": "Initialize ancillary privateTab listeners.",
-        "parameters": []
-      },
-      {
-        "name": "initCustomFunctions",
-        "type": "function",
-        "async": true,
-        "description": "Initialize custom functions.",
-        "parameters": []
-      }
-    ]
-  },
-  {
-    "namespace": "extensibles.tabfeatures",
-    "description": "API implementing additional tab features",
-    "functions": [
-      {
-        "name": "initPrefObservers",
-        "type": "function",
-        "async": false,
-        "description": "Register preference observers for tabfeatures/uicustomizations with the current top window.",
-        "parameters": []
-      },
-      {
-        "name": "copyUrlCommand",
-        "type": "function",
-        "async": true,
-        "description": "Add observer for menuitem-copyurl-extension topic.",
-        "parameters": []
-      },
-      {
-        "name": "copyAllUrlsCommand",
-        "type": "function",
-        "async": true,
-        "description": "Add observer for menuitem-copyallurls-extension topic.",
-        "parameters": []
-      },
-      {
-        "name": "restartBrowserCommand",
-        "type": "function",
-        "async": true,
-        "description": "Add observer for restartbrowser-extension topic.",
-        "parameters": []
-      },
-      {
-        "name": "styleMenuBarCommand",
-        "type": "function",
-        "async": true,
-        "description": "Add observer for style-menubar-extension topic.",
-        "parameters": []
-      }
-    ]
-  },
-  {
-    "namespace": "extensibles.prefsext",
-    "description": "API implementing about:preferences features",
-    "functions": [
-      {
-        "name": "setStyle",
-        "type": "function",
-        "async": false,
-        "description": "Set additional css rules for about:preferences.",
-        "parameters": []
-      }
-    ]
-  }
-]
diff --git a/browser/extensions/extensibles/extension/manifest.json b/browser/extensions/extensibles/extension/manifest.json
index c39b1d730ce5b..e4efde91a2a59 100644
--- a/browser/extensions/extensibles/extension/manifest.json
+++ b/browser/extensions/extensibles/extension/manifest.json
@@ -40,29 +40,10 @@
 
   "background": {
     "scripts": [
-      "tabfeatures/background.js",
-      "aboutpreferences/background.js",
       "addon-stores/cws.js",
       "addon-stores/ows.js"
     ]
   },
 
-  "permissions": ["tabs", "menus"],
-
-  "experiment_apis": {
-    "extensibles": {
-      "schema": "./experiment-apis/extensibles/schema.json",
-      "parent": {
-        "scopes": ["addon_parent"],
-        "script": "./experiment-apis/extensibles/api.js",
-        "paths": [
-          ["extensibles", "utils"],
-          ["extensibles", "privatetab"],
-          ["extensibles", "statusbar"],
-          ["extensibles", "tabfeatures"],
-          ["extensibles", "prefsext"]
-        ]
-      }
-    }
-  }
+  "permissions": ["tabs", "menus"]
 }
diff --git a/browser/extensions/extensibles/extension/privatetab/background.js b/browser/extensions/extensibles/extension/privatetab/background.js
deleted file mode 100644
index bfb0ac47b5259..0000000000000
--- a/browser/extensions/extensibles/extension/privatetab/background.js
+++ /dev/null
@@ -1,344 +0,0 @@
-// /* This Source Code Form is subject to the terms of the Mozilla Public
-//  * License, v. 2.0. If a copy of the MPL was not distributed with this
-//  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// /* global browser Services window navigator privateTab */
-
-// // Still make all elements with JS -> include a new ftl file/register in top level so we can keep translations local
-// // Because we have to make so many elements in so many different locations it doesn't make sense to include these
-// // in specific html files, it will get too complex
-
-
-// // TODO: Include all elements, use JS to move the elements to the correct location, part of PrivateTab.init();
-// // Move all listeners to PrivateTab.init();
-// // Move some functions to observer based calls from utilityOverlay.js
-
-
-
-// const PrivateTab = {
-//   openAll: "placesContext_openBookmarkContainer:tabs",
-//   openAllLinks: "placesContext_openLinks:tabs",
-//   openTab: "placesContext_open:newtab",
-
-//   get privateTooltip() {
-//     let key = "(Ctrl+Alt+P)"; // add a key getter to determine key based on OS
-//     let tooltip = browser.i18n.getMessage("newPrivateTooltip") + key;
-//     return tooltip;
-//   },
-
-//   get containerName() {
-//     return browser.i18n.getMessage("containerName");
-//   },
-//   get widgetAttrs() {
-//     return {
-//       id: "privateTab-button",
-//       label: browser.i18n.getMessage("newPrivateTab"),
-//       tooltiptext: this.privateTooltip,
-//       class: "toolbarbutton-1 chromeclass-toolbar-additional",
-//       oncommand: "privateTab.browserOpenTabPrivate(window)",
-//     };
-//   },
-
-//   async getPlacesContextAttrs() {
-//     this.openAllOncommand = await browser.extensibles.utils.getElementAttr(
-//       this.openAll,
-//       "oncommand"
-//     );
-//     this.openAllOnclick = await browser.extensibles.utils.getElementAttr(
-//       this.openAll,
-//       "onclick"
-//     );
-//     this.openAllLinksOncommand = await browser.extensibles.utils.getElementAttr(
-//       this.openAllLinks,
-//       "oncommand"
-//     );
-//     this.openAllLinksOnclick = await browser.extensibles.utils.getElementAttr(
-//       this.openAllLinks,
-//       "onclick"
-//     );
-//   },
-
-//   get placesContextItems() {
-//     return [
-//       {
-//         tag: "menuitem",
-//         attrs: {
-//           id: "openAllPrivate",
-//           label: browser.i18n.getMessage("openAllPrivate"),
-//           accesskey: "v",
-//           class: "menuitem-iconic privatetab-icon",
-//           oncommand:
-//             "event.userContextId = " +
-//             this.container.userContextId +
-//             "; " +
-//             this.openAllOncommand,
-//           onclick:
-//             "event.userContextId = " +
-//             this.container.userContextId +
-//             "; " +
-//             this.openAllOnclick,
-//         },
-//         adjacentTo: this.openAll,
-//         position: "afterend",
-//       },
-//       {
-//         tag: "menuitem",
-//         attrs: {
-//           id: "openAllLinksPrivate",
-//           label: browser.i18n.getMessage("openAllPrivate"),
-//           accesskey: "v",
-//           class: "menuitem-iconic privatetab-icon",
-//           oncommand:
-//             "event.userContextId = " +
-//             this.container.userContextId +
-//             "; " +
-//             this.openAllLinksOncommand,
-//           onclick:
-//             "event.userContextId = " +
-//             this.container.userContextId +
-//             "; " +
-//             this.openAllLinksOnclick,
-//         },
-//         adjacentTo: this.openAllLinks,
-//         position: "afterend",
-//       },
-//       {
-//         tag: "menuitem",
-//         attrs: {
-//           id: "openPrivate",
-//           label: browser.i18n.getMessage("openPrivateTab"),
-//           accesskey: "v",
-//           class: "menuitem-iconic privatetab-icon",
-//           oncommand:
-//             'let view = event.target.parentElement._view; PlacesUIUtils._openNodeIn(view.selectedNode, "tab", view.ownerWindow, false, ' +
-//             this.container.userContextId +
-//             ")",
-//         },
-//         adjacentTo: this.openTab,
-//         position: "afterend",
-//       },
-//     ];
-//   },
-
-//   get keysetItems() {
-//     return [
-//       {
-//         tag: "keyset",
-//         attrs: {
-//           id: "privateTab-keyset",
-//         },
-//         adjacentTo: "mainKeyset",
-//         position: "afterend",
-//       },
-//     ];
-//   },
-
-//   get keyItems() {
-//     return [
-//       {
-//         tag: "key",
-//         attrs: {
-//           id: "togglePrivateTab-key",
-//           modifiers: "alt control",
-//           key: "T",
-//           oncommand: "privateTab.togglePrivate(window)",
-//         },
-//         appendTo: "privateTab-keyset",
-//       },
-//       {
-//         tag: "key",
-//         attrs: {
-//           id: "newPrivateTab-key",
-//           modifiers: "alt control",
-//           key: "P",
-//           oncommand: "privateTab.browserOpenTabPrivate(window)",
-//         },
-//         appendTo: "privateTab-keyset",
-//       },
-//     ];
-//   },
-
-//   get openLinkItems() {
-//     return [
-//       {
-//         tag: "menuitem",
-//         attrs: {
-//           id: "menu_newPrivateTab",
-//           label: browser.i18n.getMessage("newPrivateTab"),
-//           accesskey: "v",
-//           acceltext: "Ctrl+Alt+P", // TODO: change to key getter
-//           class: "menuitem-iconic privatetab-icon",
-//           oncommand: "privateTab.browserOpenTabPrivate(window)",
-//         },
-//         adjacentTo: "menu_newNavigatorTab",
-//         position: "afterend",
-//       },
-//       {
-//         tag: "menuitem",
-//         attrs: {
-//           id: "openLinkInPrivateTab",
-//           label: browser.i18n.getMessage("openLinkPrivate"),
-//           accesskey: "v",
-//           class: "menuitem-iconic privatetab-icon",
-//           hidden: true,
-//         },
-//         adjacentTo: "context-openlinkintab",
-//         position: "afterend",
-//       },
-//     ];
-//   },
-
-//   get toggleItems() {
-//     return [
-//       {
-//         tag: "menuitem",
-//         attrs: {
-//           id: "toggleTabPrivateState",
-//           label: browser.i18n.getMessage("privateTab"),
-//           class: "menuitem-iconic privatetab-icon",
-//           accesskey: "v",
-//           acceltext: "Ctrl+Alt+T", // TODO: change to key getter
-//           oncommand:
-//             "privateTab.togglePrivate(window, TabContextMenu.contextTab)",
-//         },
-//         adjacentTo: "context_pinTab",
-//         position: "afterend",
-//       },
-//     ];
-//   },
-
-//   get toolbarItems() {
-//     return [
-//       {
-//         tag: "toolbarbutton",
-//         attrs: {
-//           id: "newPrivateTab-button",
-//           label: browser.i18n.getMessage("newPrivateTab"),
-//           tooltiptext: this.privateTooltip,
-//           class: "toolbarbutton-1 chromeclass-toolbar-additional",
-//         },
-//         adjacentTo: "tabs-newtab-button",
-//         position: "afterend",
-//       },
-//     ];
-//   },
-
-//   async init() {
-//     // init privatetab helper in window object
-//     browser.extensibles.privatetab.registerPrivateTab(
-//       this.containerName,
-//       this.widgetAttrs
-//     );
-//     // init privatetab in window
-//     if (browser.extensibles.utils.isTopWindowPrivate()) {
-//       return;
-//     }
-//     this.container = await browser.extensibles.utils.getContainer(
-//       this.containerName
-//     );
-//     // init placesContext
-//     await this.getPlacesContextAttrs();
-//     // this.placesContextItems.forEach(item => {
-//     //   this.createAdjacentElement(item);
-//     // });
-
-//     browser.extensibles.utils.addElementListener(
-//       "placesContext",
-//       "popupshowing",
-//       "places"
-//     );
-
-//     if (!browser.extensibles.utils.windowIsChromeWindow()) {
-//       return;
-//     }
-//     // init keyset
-//     this.keysetItems.forEach(item => {
-//       this.createAdjacentElement(item);
-//     });
-
-//     this.keyItems.forEach(item => {
-//       this.createAppendElement(item);
-//     });
-
-//     // init openLink
-//     this.openLinkItems.forEach(item => {
-//       this.createAdjacentElement(item);
-//     });
-
-//     browser.extensibles.utils.addElementListener(
-//       "contentAreaContextMenu",
-//       "popupshowing",
-//       "showContent"
-//     );
-//     browser.extensibles.utils.addElementListener(
-//       "contentAreaContextMenu",
-//       "popuphidden",
-//       "hideContent"
-//     );
-//     browser.extensibles.utils.addElementListener(
-//       "openLinkInPrivateTab",
-//       "command",
-//       "openLink"
-//     );
-
-//     // init toggleTab
-//     this.toggleItems.forEach(item => {
-//       this.createAdjacentElement(item);
-//     });
-
-//     browser.extensibles.utils.addElementListener(
-//       "tabContextMenu",
-//       "popupshowing",
-//       "toggleTab"
-//     );
-
-//     // init privateMask
-//     browser.extensibles.privatetab.updatePrivateMaskId("private-mask");
-
-//     // init toolbarbutton
-//     this.toolbarItems.forEach(item => {
-//       this.createAdjacentElement(item);
-//     });
-
-//     browser.extensibles.utils.addElementListener(
-//       "newPrivateTab-button",
-//       "click",
-//       "toolbarClick"
-//     );
-
-//     // init privateTab listeners
-//     browser.extensibles.privatetab.initPrivateTabListeners();
-
-//     // register additional functions
-//     browser.extensibles.privatetab.initCustomFunctions();
-//   },
-
-//   createAdjacentElement(item) {
-//     const { tag, attrs, adjacentTo, position } = item;
-//     browser.extensibles.utils.createAndPositionElement(
-//       tag,
-//       attrs,
-//       adjacentTo,
-//       position
-//     );
-//   },
-
-//   createAppendElement(item) {
-//     const { tag, attrs, appendTo } = item;
-//     browser.extensibles.utils.createAndPositionElement(tag, attrs, appendTo);
-//   },
-// };
-
-// (async function() {
-//   // init in primary window
-//   await PrivateTab.init();
-//   // init in window on created if not already initialized
-//   browser.windows.onCreated.addListener(async windowId => {
-//     if (
-//       !(await browser.extensibles.utils.initialized("privateTab")) &&
-//       windowId
-//     ) {
-//       await PrivateTab.init();
-//     }
-//   });
-// })();
diff --git a/browser/extensions/extensibles/extension/statusbar/background.js b/browser/extensions/extensibles/extension/statusbar/background.js
deleted file mode 100644
index 8082e689b34b2..0000000000000
--- a/browser/extensions/extensibles/extension/statusbar/background.js
+++ /dev/null
@@ -1,99 +0,0 @@
-// /* This Source Code Form is subject to the terms of the Mozilla Public
-//  * License, v. 2.0. If a copy of the MPL was not distributed with this
-//  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// /* global browser Services window navigator statusBar */
-
-// const StatusBar = {
-//   get dummyItems() {
-//     return [
-//       {
-//         tag: "toolbar",
-//         attrs: {
-//           id: "status-dummybar",
-//           toolbarname: browser.i18n.getMessage("statusBar"),
-//           hidden: true,
-//         },
-//         appendTo: "gNavToolbox",
-//       },
-//     ];
-//   },
-
-//   get barItems() {
-//     return [
-//       {
-//         tag: "toolbar",
-//         attrs: {
-//           id: "status-bar",
-//           customizable: "true",
-//           context: "toolbar-context-menu",
-//           mode: "icons",
-//         },
-//         setAs: "win.statusbar.node",
-//       },
-//       {
-//         tag: "toolbaritem",
-//         attrs: {
-//           id: "status-text",
-//           flex: "1",
-//           width: "100",
-//         },
-//         setAs: "win.statusbar.textNode",
-//       },
-//     ];
-//   },
-
-//   async init() {
-//     // init statusbar helper in window object
-//     // browser.extensibles.statusbar.registerStatusBar();
-//     // init dummy bar
-//     // this.dummyItems.forEach(item => {
-//     //   this.createAppendElement(item);
-//     // });
-//     // browser.extensibles.statusbar.configureStatusBar("status-dummybar");
-//     // init statusbar nodes
-//     // this.barItems.forEach(item => {
-//     //   this.createElementAs(item);
-//     // });
-//     // browser.extensibles.statusbar.configureStatusBar("status-bar");
-//     // init resizer
-//     // browser.extensibles.statusbar.configureResizer();
-//     // override status panel
-//     // browser.extensibles.statusbar.overrideStatusPanelLabel();
-//     // browser.extensibles.statusbar.configureBottomBox();
-//   },
-
-//   createAdjacentElement(item) {
-//     const { tag, attrs, adjacentTo, position } = item;
-//     browser.extensibles.utils.createAndPositionElement(
-//       tag,
-//       attrs,
-//       adjacentTo,
-//       position
-//     );
-//   },
-
-//   createAppendElement(item) {
-//     const { tag, attrs, appendTo } = item;
-//     browser.extensibles.utils.createAndPositionElement(tag, attrs, appendTo);
-//   },
-
-//   createElementAs(item) {
-//     const { tag, attrs, setAs } = item;
-//     browser.extensibles.utils.createElementAs(tag, attrs, setAs);
-//   },
-// };
-
-// (async function() {
-//   // init in primary window
-//   await StatusBar.init();
-//   // init in window on created if not already initialized
-//   browser.windows.onCreated.addListener(async windowId => {
-//     if (
-//       !(await browser.extensibles.utils.initialized("statusBar")) &&
-//       windowId
-//     ) {
-//       await StatusBar.init();
-//     }
-//   });
-// })();
diff --git a/browser/extensions/extensibles/extension/tabfeatures/background.js b/browser/extensions/extensibles/extension/tabfeatures/background.js
deleted file mode 100644
index b335182a47465..0000000000000
--- a/browser/extensions/extensibles/extension/tabfeatures/background.js
+++ /dev/null
@@ -1,9 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* global browser Services window navigator tabFeatures */
-
-// Init observers
-browser.extensibles.tabfeatures.copyUrlCommand();
-browser.extensibles.tabfeatures.copyAllUrlsCommand();