chore(tslint): update tslint to 4.x (#13603)

modules/@angular/platform-browser-dynamic/testing/dom_test_component_renderer.ts

@@ -11,8 +11,6 @@ import {TestComponentRenderer} from '@angular/core/testing';
 import {DOCUMENT} from '@angular/platform-browser';
 import {getDOM} from './private_import_platform-browser';
 
-
-
 /**
  * A DOM based implementation of the TestComponentRenderer.
  */

modules/@angular/platform-browser-dynamic/testing/private_export_testing.ts

@@ -8,7 +8,7 @@
 
 import * as testing from './dom_test_component_renderer';
 
-export var __platform_browser_dynamic_private__:
+export const __platform_browser_dynamic_private__:
     {DOMTestComponentRenderer: typeof testing.DOMTestComponentRenderer} = {
       DOMTestComponentRenderer: testing.DOMTestComponentRenderer
     };

modules/@angular/platform-browser-dynamic/testing/private_import_platform-browser-dynamic.ts

@@ -8,6 +8,6 @@
 
 import {__platform_browser_dynamic_private__ as _} from '@angular/platform-browser-dynamic';
 
-export var INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS:
+export const INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS:
     typeof _.INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS =
     _.INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS;

modules/@angular/platform-browser-dynamic/testing/private_import_platform-browser.ts

@@ -8,4 +8,4 @@
 
 import {__platform_browser_private__ as _} from '@angular/platform-browser';
 
-export var getDOM: typeof _.getDOM = _.getDOM;
+export const getDOM: typeof _.getDOM = _.getDOM;