EventDispatcher shouldn't always cancel on a hierarchy change

components/mus/ws/test_utils.h

Index: components/mus/ws/test_utils.h
diff --git a/components/mus/ws/test_utils.h b/components/mus/ws/test_utils.h
index c46d2deaa638265a6ccefeabbd4eece562e76240..710052c397cf8b0eba884edae9485c0cdae47523 100644
--- a/components/mus/ws/test_utils.h
+++ b/components/mus/ws/test_utils.h
@@ -117,6 +117,7 @@ class EventDispatcherTestApi {
   ModalWindowController* modal_window_controller() const {
     return &ed_->modal_window_controller_;
   }
+  ServerWindow* capture_window() { return ed_->capture_window_; }
 
  private:
   EventDispatcher* ed_;