refactor(core): remove deprecated 'bootstrap' (#10831)

modules/playground/src/web_workers/images/single_thread.ts

@@ -6,9 +6,16 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {bootstrap} from '@angular/platform-browser-dynamic';
+import {Component, NgModule} from '@angular/core';
+import {BrowserModule} from '@angular/platform-browser';
+import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
+
 import {ImageDemo} from './index_common';
 
-export function main() {
-  bootstrap(ImageDemo);
+@NgModule({bootstrap: [ImageDemo], imports: [BrowserModule]})
+class ExampleModule {
 }
+
+export function main() {
+  platformBrowserDynamic().bootstrapModule(ExampleModule);
+}