anchor.diff:      debugger.page = this;
     }
   
  +  StreamSubscription _resizeSubscription;
     Future<StreamSubscription> _isolateSubscriptionFuture;
     Future<StreamSubscription> _debugSubscriptionFuture;
     Future<StreamSubscription> _stdoutSubscriptionFuture;
  
positive.code:     debugger.flushStdio();
    }
  
    @override
    void detached() {
      debugger.isolate = null;
      cancelFutureSubscription(_isolateSubscriptionFuture);
      _isolateSubscriptionFuture = null;
      cancelFutureSubscription(_debugSubscriptionFuture);
  
negative.code:     debugger.input.debugger = debugger;
      debugger.init();
  
      _resizeSubscription = window.onResize.listen(_onResize);
      _isolateSubscriptionFuture =
          app.vm.listenEventStream(VM.kIsolateStream, debugger.onEvent);
      _debugSubscriptionFuture =
  