feat(router): add a provider making angular1/angular2 integration easier (#12769)

modules/@angular/router/rollup-upgrade.config.js

@@ -0,0 +1,20 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+export default {
+  entry: '../../../dist/packages-dist/router/upgrade.js',
+  dest: '../../../dist/packages-dist/router/bundles/router-upgrade.umd.js',
+  format: 'umd',
+  moduleName: 'ng.router.upgrade',
+  globals: {
+    '@angular/core': 'ng.core',
+    '@angular/common': 'ng.common',
+    '@angular/router': 'ng.router',
+    '@angular/upgrade/static': 'ng.upgrade.static'
+  }
+};