message: change AfterContentChecked to AfterViewChecked in dialog resize to adjust position better
diff: import {
  - AfterContentChecked,
  + AfterViewChecked,
  Component,
  ComponentRef,
  ElementRef,
  @@ -35,7 +35,7 @@ const leaveTransitionEasingCurve = 'cubic-bezier(0.0, 0.0, 0.2, 1)';
  styleUrls: ['mdl-dialog-host.component.scss'],
  encapsulation: ViewEncapsulation.None
  })
  -export class MdlDialogHostComponent implements OnInit, AfterContentChecked {
  +export class MdlDialogHostComponent implements OnInit, AfterViewChecked {
  @HostBinding('class.mdl-dialog') public mdlDialog = true;
  @HostBinding('class.open') public visible = false;
  @HostBinding('style.zIndex') public zIndex = MIN_DIALOG_Z_INDEX + 1;
  @@ -73,7 +73,7 @@ export class MdlDialogHostComponent implements OnInit, AfterContentChecked {
  this.addResizeListener();
  }
  - public ngAfterContentChecked(): void {
  + public ngAfterViewChecked(): void {
  this.updateDialogPosition();
  }
  