There are currently 60 references in flutter/test/material that make use of TestWindow properties, these should be updated to use TestFlutterView and TestPlatformDispatcher as appropriate for the use cases.

• app_test.dart has 2 references
• date_picker_test.dart has 6 references
• drawer_test.dart has 6 references
• dropdown_test.dart has 4 references
• navigation_drawer_test.dart has 3 references
• page_test.dart has 7 references
• scrollbar_test.dart has 1 reference
• text_field_test.dart has 3 references
• text_selection_test.dart has 8 references
• time_picker_test.dart has 20 references