diff --git a/browser/components/extensions/ext-devtools-inspectedWindow.js b/browser/components/extensions/ext-devtools-inspectedWindow.js
index 7e52a6b387d9..a24a7203e771 100644
--- a/browser/components/extensions/ext-devtools-inspectedWindow.js
+++ b/browser/components/extensions/ext-devtools-inspectedWindow.js
@@ -4,15 +4,16 @@
 
 /* global getDevToolsTargetForContext */
 
-XPCOMUtils.defineLazyModuleGetter(this, "DevToolsShim",
-                                  "chrome://devtools-shim/content/DevToolsShim.jsm");
-
 var {
   SpreadArgs,
 } = ExtensionCommon;
 
 this.devtools_inspectedWindow = class extends ExtensionAPI {
   getAPI(context) {
+    const {
+      WebExtensionInspectedWindowFront,
+    } = require("devtools/shared/fronts/webextension-inspected-window");
+
     // Lazily retrieve and store an inspectedWindow actor front per child context.
     let waitForInspectedWindowFront;
     async function getInspectedWindowFront() {
@@ -21,7 +22,7 @@ this.devtools_inspectedWindow = class extends ExtensionAPI {
       // because the first time that the target has been cloned, it is not ready to be used to create
       // the front instance until it is connected to the remote debugger successfully).
       const clonedTarget = await getDevToolsTargetForContext(context);
-      return DevToolsShim.createWebExtensionInspectedWindowFront(clonedTarget);
+      return new WebExtensionInspectedWindowFront(clonedTarget.client, clonedTarget.form);
     }
 
     function getToolboxOptions() {
diff --git a/browser/components/extensions/ext-devtools.js b/browser/components/extensions/ext-devtools.js
index 7394e5826a38..d9c8fc4b4b1c 100644
--- a/browser/components/extensions/ext-devtools.js
+++ b/browser/components/extensions/ext-devtools.js
@@ -53,8 +53,9 @@ global.getDevToolsTargetForContext = async (context) => {
     throw new Error("Unexpected target type: only local tabs are currently supported.");
   }
 
-  const tab = context.devToolsToolbox.target.tab;
-  context.devToolsTarget = DevToolsShim.getTargetForTab(tab);
+  const {TabTarget} = require("devtools/client/framework/target");
+
+  context.devToolsTarget = new TabTarget(context.devToolsToolbox.target.tab);
   await context.devToolsTarget.makeRemote();
 
   return context.devToolsTarget;
diff --git a/devtools/client/framework/devtools.js b/devtools/client/framework/devtools.js
index 10f3202a0e01..40abbd2a8ac6 100644
--- a/devtools/client/framework/devtools.js
+++ b/devtools/client/framework/devtools.js
@@ -22,9 +22,6 @@ loader.lazyRequireGetter(this, "DebuggerServer", "devtools/server/main", true);
 loader.lazyRequireGetter(this, "DebuggerClient", "devtools/shared/client/main", true);
 loader.lazyImporter(this, "BrowserToolboxProcess", "resource://devtools/client/framework/ToolboxProcess.jsm");
 
-loader.lazyRequireGetter(this, "WebExtensionInspectedWindowFront",
-      "devtools/shared/fronts/webextension-inspected-window", true);
-
 const {defaultTools: DefaultTools, defaultThemes: DefaultThemes} =
   require("devtools/client/definitions");
 const EventEmitter = require("devtools/shared/old-event-emitter");
@@ -582,23 +579,6 @@ DevTools.prototype = {
     BrowserToolboxProcess.init({ addonID });
   },
 
-  /**
-   * Compatibility layer for web-extensions. Used by DevToolsShim for
-   * browser/components/extensions/ext-devtools-inspectedWindow.js
-   */
-  createWebExtensionInspectedWindowFront: function (tabTarget) {
-    return new WebExtensionInspectedWindowFront(tabTarget.client, tabTarget.form);
-  },
-
-  /**
-   * Compatibility layer for web-extensions. Used by DevToolsShim for
-   * toolkit/components/extensions/ext-c-toolkit.js
-   */
-  openBrowserConsole: function () {
-    let {HUDService} = require("devtools/client/webconsole/hudservice");
-    HUDService.openBrowserConsoleOrFocus();
-  },
-
   /**
    * Called from the DevToolsShim, used by nsContextMenu.js.
    *
diff --git a/devtools/shim/DevToolsShim.jsm b/devtools/shim/DevToolsShim.jsm
index 303b8d38464d..fabf8f3c48f9 100644
--- a/devtools/shim/DevToolsShim.jsm
+++ b/devtools/shim/DevToolsShim.jsm
@@ -286,6 +286,7 @@ let addonSdkMethods = [
   "closeToolbox",
   "connectDebuggerServer",
   "createDebuggerClient",
+  "getTargetForTab",
   "getToolbox",
   "initBrowserToolboxProcessForAddon",
   "showToolbox",
@@ -298,10 +299,7 @@ let addonSdkMethods = [
  * therefore DevTools should always be available when they are called.
  */
 let webExtensionsMethods = [
-  "createWebExtensionInspectedWindowFront",
-  "getTargetForTab",
   "getTheme",
-  "openBrowserConsole",
 ];
 
 for (let method of [...addonSdkMethods, ...webExtensionsMethods]) {
diff --git a/toolkit/components/extensions/ExtensionCommon.jsm b/toolkit/components/extensions/ExtensionCommon.jsm
index a9a075c9aed1..32d1b134e07b 100644
--- a/toolkit/components/extensions/ExtensionCommon.jsm
+++ b/toolkit/components/extensions/ExtensionCommon.jsm
@@ -1262,6 +1262,7 @@ class SchemaAPIManager extends EventEmitter {
     XPCOMUtils.defineLazyModuleGetters(global, {
       ExtensionUtils: "resource://gre/modules/ExtensionUtils.jsm",
       XPCOMUtils: "resource://gre/modules/XPCOMUtils.jsm",
+      require: "resource://devtools/shared/Loader.jsm",
     });
 
     return global;
diff --git a/toolkit/components/extensions/ext-c-toolkit.js b/toolkit/components/extensions/ext-c-toolkit.js
index a0c9438f3512..76cec1aae3e5 100644
--- a/toolkit/components/extensions/ext-c-toolkit.js
+++ b/toolkit/components/extensions/ext-c-toolkit.js
@@ -2,11 +2,6 @@
 
 Cu.import("resource://gre/modules/ExtensionCommon.jsm");
 
-XPCOMUtils.defineLazyModuleGetter(this, "Services",
-                                 "resource://gre/modules/Services.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "DevToolsShim",
-                                 "chrome://devtools-shim/content/DevToolsShim.jsm");
-
 // These are defined on "global" which is used for the same scopes as the other
 // ext-c-*.js files.
 /* exported EventManager */
@@ -21,7 +16,11 @@ global.initializeBackgroundPage = (contentWindow) => {
   let alertDisplayedWarning = false;
   let alertOverwrite = text => {
     if (!alertDisplayedWarning) {
-      DevToolsShim.openBrowserConsole();
+      require("devtools/client/framework/devtools-browser");
+
+      let {HUDService} = require("devtools/client/webconsole/hudservice");
+      HUDService.openBrowserConsoleOrFocus();
+
       contentWindow.console.warn("alert() is not supported in background windows; please use console.log instead.");
 
       alertDisplayedWarning = true;