chore(lint): Added license headers to most TypeScript files

Relates to #9380

modules/@angular/common/test/forms-deprecated/integration_spec.ts

@@ -1,3 +1,11 @@
+/**
+ * @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 {NgFor, NgIf} from '@angular/common';
 import {Control, ControlGroup, ControlValueAccessor, FORM_DIRECTIVES, FORM_PROVIDERS, NG_ASYNC_VALIDATORS, NG_VALIDATORS, NgControl, NgForm, RadioButtonState, Validator, Validators} from '@angular/common/src/forms-deprecated';
 import {TestComponentBuilder} from '@angular/compiler/testing';