Move height calculation utilities to class TrackView

src/menus/ViewMenus.cpp

@@ -206,10 +206,9 @@ void DoZoomFitV(AudacityProject &project)
    height -= 28;
    
    // The height of minimized and non-audio tracks cannot be apportioned
-   const auto GetHeight = []( const Track *track )
-      { return TrackView::Get( *track ).GetHeight(); };
    height -=
-      tracks.Any().sum( GetHeight ) - range.sum( GetHeight );
+      tracks.Any().sum( TrackView::GetTrackHeight )
+         - range.sum( TrackView::GetTrackHeight );
    
    // Give each resized track the average of the remaining height
    height = height / count;