anchor.diff:  // BSD-style license that can be found in the LICENSE file.
   
   import 'dart:async';
  +import 'dart:html';
   
   import 'package:angular/angular.dart';
  +import 'package:angular_components/utils/angular/css/css.dart';
   import 'package:angular_components/content/deferred_content.dart';
   import 'package:angular_components/content/deferred_content_aware.dart';
   import 'package:angular_components/laminate/enums/alignment.dart';
  
positive.code:   final TooltipController _tooltipController;
    final ChangeDetectorRef _changeDetector;
  
    MaterialPaperTooltipComponent(this._tooltipController, this._changeDetector);
  
    @ViewChild(MaterialPopupComponent)
    set popupChild(MaterialPopupComponent popup) {
  
negative.code:                 [offsetX]="offsetX"
                  [offsetY]="offsetY"
                  [autoDismiss]="false"
                  [class]="popupClassName"
                  [source]="popupSource"
                  role="tooltip">
    <div class="paper-container"
  