refactor: remove EventEmitter from facade (#14837)

As of right now each module has its own copy of the EventEmitter
contributing to bloat.

modules/@angular/platform-webworker/src/web_workers/shared/client_message_broker.ts

@@ -6,15 +6,15 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Injectable, Type} from '@angular/core';
+import {EventEmitter, Injectable, Type} from '@angular/core';
 
-import {EventEmitter} from '../../facade/async';
 import {stringify} from '../../facade/lang';
 
 import {MessageBus} from './message_bus';
 import {Serializer, SerializerTypes} from './serializer';
 
 
+
 /**
  * @experimental WebWorker support in Angular is experimental.
  */

modules/@angular/platform-webworker/src/web_workers/shared/message_bus.ts

@@ -6,9 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {NgZone} from '@angular/core';
+import {EventEmitter, NgZone} from '@angular/core';
 
-import {EventEmitter} from '../../facade/async';
 
 
 /**

modules/@angular/platform-webworker/src/web_workers/shared/post_message_bus.ts

@@ -6,9 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Injectable, NgZone} from '@angular/core';
-
-import {EventEmitter} from '../../facade/async';
+import {EventEmitter, Injectable, NgZone} from '@angular/core';
 
 import {MessageBus, MessageBusSink, MessageBusSource} from './message_bus';
 

modules/@angular/platform-webworker/src/web_workers/shared/service_message_broker.ts

@@ -6,12 +6,11 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Injectable, Type} from '@angular/core';
-
-import {EventEmitter} from '../../facade/async';
+import {EventEmitter, Injectable, Type} from '@angular/core';
 import {MessageBus} from '../shared/message_bus';
 import {Serializer, SerializerTypes} from '../shared/serializer';
 
+
 /**
  * @experimental WebWorker support in Angular is currently experimental.
  */

modules/@angular/platform-webworker/src/web_workers/ui/event_dispatcher.ts

@@ -5,7 +5,7 @@
  * 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 {EventEmitter} from '../../facade/async';
+import {EventEmitter} from '@angular/core';
 import {Serializer, SerializerTypes} from '../shared/serializer';
 
 import {serializeEventWithTarget, serializeGenericEvent, serializeKeyboardEvent, serializeMouseEvent, serializeTransitionEvent} from './event_serializer';

modules/@angular/platform-webworker/src/web_workers/ui/platform_location.ts

@@ -7,10 +7,8 @@
  */
 
 import {LocationChangeListener} from '@angular/common';
-import {Injectable} from '@angular/core';
+import {EventEmitter, Injectable} from '@angular/core';
 import {ɵBrowserPlatformLocation as BrowserPlatformLocation} from '@angular/platform-browser';
-
-import {EventEmitter} from '../../facade/async';
 import {MessageBus} from '../shared/message_bus';
 import {ROUTER_CHANNEL} from '../shared/messaging_api';
 import {LocationType, Serializer, SerializerTypes} from '../shared/serializer';

modules/@angular/platform-webworker/src/web_workers/worker/platform_location.ts

@@ -7,9 +7,7 @@
  */
 
 import {LocationChangeListener, PlatformLocation} from '@angular/common';
-import {Injectable} from '@angular/core';
-
-import {EventEmitter} from '../../facade/async';
+import {EventEmitter, Injectable} from '@angular/core';
 import {ClientMessageBroker, ClientMessageBrokerFactory, FnArg, UiArguments} from '../shared/client_message_broker';
 import {MessageBus} from '../shared/message_bus';
 import {ROUTER_CHANNEL} from '../shared/messaging_api';

modules/@angular/platform-webworker/test/web_workers/shared/mock_event_emitter.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {EventEmitter} from '../../../src/facade/async';
+import {EventEmitter} from '@angular/core';
 
 export class MockEventEmitter<T> extends EventEmitter<T> {
   private _nextFns: Function[] = [];