deleted file mode 100644
--- a/toolkit/components/extensions/ext-c-permissions.js
+++ /dev/null
@@ -1,22 +0,0 @@
-"use strict";
-
-var {
-  ExtensionError,
-} = ExtensionUtils;
-
-this.permissions = class extends ExtensionAPI {
-  getAPI(context) {
-    return {
-      permissions: {
-        async request(perms) {
-          let winUtils = context.contentWindow.getInterface(Ci.nsIDOMWindowUtils);
-          if (!winUtils.isHandlingUserInput) {
-            throw new ExtensionError("May only request permissions from a user input handler");
-          }
-
-          return context.childManager.callParentAsyncFunction("permissions.request_parent", [perms]);
-        },
-      },
-    };
-  }
-};

--- a/toolkit/components/extensions/ext-c-toolkit.js
+++ b/toolkit/components/extensions/ext-c-toolkit.js
@@ -57,23 +57,16 @@ extensions.registerModules({
   },
   i18n: {
     url: "chrome://extensions/content/ext-i18n.js",
     scopes: ["addon_child", "content_child", "devtools_child", "proxy_script"],
     paths: [
       ["i18n"],
     ],
   },
-  permissions: {
-    url: "chrome://extensions/content/ext-c-permissions.js",
-    scopes: ["addon_child", "content_child", "devtools_child", "proxy_script"],
-    paths: [
-      ["permissions"],
-    ],
-  },
   runtime: {
     url: "chrome://extensions/content/ext-c-runtime.js",
     scopes: ["addon_child", "content_child", "devtools_child", "proxy_script"],
     paths: [
       ["runtime"],
     ],
   },
   storage: {

--- a/toolkit/components/extensions/ext-permissions.js
+++ b/toolkit/components/extensions/ext-permissions.js
@@ -13,17 +13,17 @@ var {
 
 XPCOMUtils.defineLazyPreferenceGetter(this, "promptsEnabled",
                                       "extensions.webextOptionalPermissionPrompts");
 
 this.permissions = class extends ExtensionAPI {
   getAPI(context) {
     return {
       permissions: {
-        async request_parent(perms) {
+        async request(perms) {
           let {permissions, origins} = perms;
 
           let manifestPermissions = context.extension.manifest.optional_permissions;
           for (let perm of permissions) {
             if (!manifestPermissions.includes(perm)) {
               throw new ExtensionError(`Cannot request permission ${perm} since it was not declared in optional_permissions`);
             }
           }

--- a/toolkit/components/extensions/jar.mn
+++ b/toolkit/components/extensions/jar.mn
@@ -32,13 +32,12 @@ toolkit.jar:
     # Below is a separate group using the naming convention ext-c-*.js that run
     # in the child process.
     content/extensions/ext-c-backgroundPage.js
     content/extensions/ext-c-downloads.js
     content/extensions/ext-c-extension.js
 #ifndef ANDROID
     content/extensions/ext-c-identity.js
 #endif
-    content/extensions/ext-c-permissions.js
     content/extensions/ext-c-runtime.js
     content/extensions/ext-c-storage.js
     content/extensions/ext-c-test.js
     content/extensions/ext-c-toolkit.js

--- a/toolkit/components/extensions/schemas/permissions.json
+++ b/toolkit/components/extensions/schemas/permissions.json
@@ -81,16 +81,17 @@
           }
         ]
       },
       {
         "name": "request",
         "type": "function",
         "allowedContexts": ["content"],
         "async": "callback",
+        "requireUserInput": true,
         "description": "Request the given permissions.",
         "parameters": [
           {
             "name": "permissions",
             "$ref": "Permissions"
           },
           {
             "name": "callback",

--- a/toolkit/components/extensions/test/xpcshell/test_ext_permissions.js
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_permissions.js
@@ -125,17 +125,17 @@ add_task(async function test_permissions
   result = await call("contains", {
     permissions: [...REQUIRED_PERMISSIONS, ...OPTIONAL_PERMISSIONS],
   });
   equal(result, false, "contains() returns false for a mix of available and unavailable permissions");
 
   let perm = OPTIONAL_PERMISSIONS[0];
   result = await call("request", {permissions: [perm]});
   equal(result.status, "error", "request() fails if not called from an event handler");
-  ok(/May only request permissions from a user input handler/.test(result.message),
+  ok(/request may only be called from a user input handler/.test(result.message),
      "error message for calling request() outside an event handler is reasonable");
   result = await call("contains", {permissions: [perm]});
   equal(result, false, "Permission requested outside an event handler was not granted");
 
   let userInputHandle = winUtils.setHandlingUserInput(true);
 
   result = await call("request", {permissions: ["notifications"]});
   equal(result.status, "error", "request() for permission not in optional_permissions should fail");