message: refactor(WebSocketSubject): stop using root
diff: @@ -3,7 +3,6 @@ import { Subscriber } from '../../Subscriber';
  import { Observable } from '../../Observable';
  import { Subscription } from '../../Subscription';
  import { Operator } from '../../Operator';
  -import { root } from '../..//util/root';
  import { ReplaySubject } from '../../ReplaySubject';
  import { Observer, NextObserver } from '../../types';
  import { tryCatch } from '../..//util/tryCatch';
  @@ -90,7 +89,7 @@ export class WebSocketSubject<T> extends AnonymousSubject<T> {
  super(destination, <Observable<T>> urlConfigOrSource);
  } else {
  super();
  - this.WebSocketCtor = root.WebSocket;
  + this.WebSocketCtor = WebSocket;
  this._output = new Subject<T>();
  if (typeof urlConfigOrSource === 'string') {
  this.url = urlConfigOrSource;
  