refactor(core): change bootstrap of modules and names of platforms

BREAKING CHANGES:
- `browserPlatform`/`browserDynamicPlatform`/... have been deprecated and renamed into `platformBrowser`/`platformBrowserDynamic`/....
- `bootstrapModule` and `bootstrapModuleFactory` have been moved to be members of `PlaformRef`.
  E.g. `platformBrowserDynamic().bootstrapModule(MyModule)`.

modules/playground/src/web_workers/router/background_index.ts

@@ -6,11 +6,10 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {workerAppDynamicPlatform} from '@angular/platform-browser-dynamic';
-import {bootstrapModule} from '@angular/core';
+import {platformWorkerAppDynamic} from '@angular/platform-browser-dynamic';
 
 import {AppModule} from './index_common';
 
 export function main() {
-  bootstrapModule(AppModule, workerAppDynamicPlatform());
+  platformWorkerAppDynamic().bootstrapModule(AppModule);
 }