refactor(webworkers): move webworkers to separate @angular/platform-webworker and @angular/platform-webworker-dynamic packages

BREAKING CHANGE: web worker platform is now exported via separate packages.

Please use @angular/platform-webworker and @angular/platform-webworker-dynamic

modules/@angular/platform-webworker/src/platform-webworker.ts

@@ -0,0 +1,36 @@
+/**
+ * @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 {PlatformRef, Provider} from '@angular/core';
+
+import {WORKER_SCRIPT, platformWorkerUi} from './worker_render';
+
+export {ClientMessageBroker, ClientMessageBrokerFactory, FnArg, UiArguments} from './web_workers/shared/client_message_broker';
+export {MessageBus, MessageBusSink, MessageBusSource} from './web_workers/shared/message_bus';
+export {PRIMITIVE} from './web_workers/shared/serializer';
+export {ReceivedMessage, ServiceMessageBroker, ServiceMessageBrokerFactory} from './web_workers/shared/service_message_broker';
+export {WORKER_UI_LOCATION_PROVIDERS} from './web_workers/ui/location_providers';
+export {WORKER_APP_LOCATION_PROVIDERS} from './web_workers/worker/location_providers';
+export {WorkerAppModule, platformWorkerApp} from './worker_app';
+export {platformWorkerUi} from './worker_render';
+
+
+/**
+ * Bootstraps the worker ui.
+ *
+ * @experimental
+ */
+export function bootstrapWorkerUi(
+    workerScriptUri: string, customProviders: Provider[] = []): Promise<PlatformRef> {
+  // For now, just creates the worker ui platform...
+  return Promise.resolve(platformWorkerUi(([{
+                                            provide: WORKER_SCRIPT,
+                                            useValue: workerScriptUri,
+                                          }] as Provider[])
+                                              .concat(customProviders)));
+}