As part of the work for issue #70027 , I added a windows startup devicelab test for the Platform View example project, which required adding Windows support to the example. Currently, this project opens a platform specific view for Android and iOS when a certain button is pressed, but does nothing on Windows. While this does not hinder the ability of the test to pass, we should still add some kind of response when the button is pressed when run on Windows, such as a popup dialog.