Remove uses of shell::Loader from content

content/test/data/web_ui_mojo_shell_test.js

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-
-/**
- * This URL is defined in content/public/test/test_mojo_app.cc. It identifies
- * content_shell's out-of-process Mojo test app.
- */
-var TEST_APP_URL = 'system:content_mojo_test';
-
-
-define('main', [
-  'mojo/public/js/core',
-  'mojo/public/js/router',
-  'services/shell/public/interfaces/connector.mojom',
-  'content/public/renderer/frame_service_registry',
-  'content/public/test/test_mojo_service.mojom',
-], function (core, router, connectorMojom, serviceRegistry, testMojom) {
-
-  var connectToService = function(serviceProvider, iface) {
-    var pipe = core.createMessagePipe();
-    var service = new iface.proxyClass(new router.Router(pipe.handle0));
-    serviceProvider.getInterface(iface.name, pipe.handle1);
-    return service;
-  };
-
-  return function() {
-    domAutomationController.setAutomationId(0);
-    var connectorPipe =
-        serviceRegistry.connectToService(connectorMojom.Connector.name);
-    var connector = new connectorMojom.Connector.proxyClass(
-        new router.Router(connectorPipe));
-
-    var identity = {};
-    identity.name = TEST_APP_URL;
-    identity.user_id = connectorMojom.kInheritUserID;
-    identity.instance = "";
-    connector.connect(
-        identity,
-        function (services) {
-          var test = connectToService(services, testMojom.TestMojoService);
-          test.getRequestorName().then(function(response) {
-            domAutomationController.send(
-                response.name == 'chrome://mojo-web-ui/');
-          });
-        },
-        function (exposedServices) {},
-        null);
-  };
-});