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diff --git a/mobile/android/modules/dbg-browser-actors.js b/mobile/android/modules/dbg-browser-actors.js
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+++ b/mobile/android/modules/dbg-browser-actors.js
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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/. */
+
+/* eslint-env commonjs */
+
+"use strict";
+/**
+ * Fennec-specific actors.
+ */
+
+const { RootActor } = require("devtools/server/actors/root");
+const {
+  ActorRegistry,
+} = require("devtools/server/actors/utils/actor-registry");
+const {
+  BrowserTabList,
+  BrowserAddonList,
+  sendShutdownEvent,
+} = require("devtools/server/actors/webbrowser");
+const {
+  ServiceWorkerRegistrationActorList,
+} = require("devtools/server/actors/worker/service-worker-registration-list");
+const {
+  WorkerDescriptorActorList,
+} = require("devtools/server/actors/worker/worker-descriptor-actor-list");
+
+const { ProcessActorList } = require("devtools/server/actors/process");
+
+/**
+ * Construct a root actor appropriate for use in a server running in a
+ * browser on Android. The returned root actor:
+ * - respects the factories registered with ActorRegistry.addGlobalActor,
+ * - uses a MobileTabList to supply tab actors,
+ * - sends all navigator:browser window documents a Debugger:Shutdown event
+ *   when it exits.
+ *
+ * * @param aConnection DevToolsServerConnection
+ *        The conection to the client.
+ */
+exports.createRootActor = function createRootActor(aConnection) {
+  const parameters = {
+    tabList: new MobileTabList(aConnection),
+    addonList: new BrowserAddonList(aConnection),
+    workerList: new WorkerDescriptorActorList(aConnection, {}),
+    serviceWorkerRegistrationList: new ServiceWorkerRegistrationActorList(
+      aConnection
+    ),
+    processList: new ProcessActorList(),
+    globalActorFactories: ActorRegistry.globalActorFactories,
+    onShutdown: sendShutdownEvent,
+  };
+  return new RootActor(aConnection, parameters);
+};
+
+/**
+ * A live list of BrowserTabActors representing the current browser tabs,
+ * to be provided to the root actor to answer 'listTabs' requests.
+ *
+ * This object also takes care of listening for TabClose events and
+ * onCloseWindow notifications, and exiting the BrowserTabActors concerned.
+ *
+ * (See the documentation for RootActor for the definition of the "live
+ * list" interface.)
+ *
+ * @param aConnection DevToolsServerConnection
+ *     The connection in which this list's tab actors may participate.
+ *
+ * @see BrowserTabList for more a extensive description of how tab list objects
+ *      work.
+ */
+function MobileTabList(aConnection) {
+  BrowserTabList.call(this, aConnection);
+}
+
+MobileTabList.prototype = Object.create(BrowserTabList.prototype);
+
+MobileTabList.prototype.constructor = MobileTabList;
+
+MobileTabList.prototype._getSelectedBrowser = function(aWindow) {
+  return aWindow.browser;
+};
+
+MobileTabList.prototype._getChildren = function(aWindow) {
+  return [aWindow.browser];
+};