anchor.diff:    selector: 'cmp-with-host',
     template: '<p>Component with an injected host</p>',
     directives: const [SomeDirective],
  -  // TODO(b/71710685): Change to `Visibility.local` to reduce code size.
  -  visibility: Visibility.all,
   )
   class CompWithHost {
     SomeDirective myHost;
  
positive.code:     NgFor,
      ToolbarViewContainer,
    ],
    // TODO(b/71710685): Change to `Visibility.local` to reduce code size.
    visibility: Visibility.all,
  )
  class ToolbarComponent {
    @ContentChildren(ToolbarPart)
  
negative.code:   directives: const [
      SomeViewport,
    ],
  )
  class TemplateDirectiveComponent {}
  
  