refactor: move angular source to /packages rather than modules/@angular

packages/forms/test/spies.ts

@@ -0,0 +1,21 @@
+/**
+ * @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
+ */
+
+import {ChangeDetectorRef} from '@angular/core/src/change_detection/change_detector_ref';
+import {SpyObject} from '@angular/core/testing/testing_internal';
+
+export class SpyChangeDetectorRef extends SpyObject {
+  constructor() {
+    super(ChangeDetectorRef);
+    this.spy('markForCheck');
+  }
+}
+
+export class SpyNgControl extends SpyObject {}
+
+export class SpyValueAccessor extends SpyObject { writeValue: any; }