MouseEventTrackingWidget  760 ui/views/widget/widget_interactive_uitest.cc   DISALLOW_COPY_AND_ASSIGN(MouseEventTrackingWidget);
MouseEventTrackingWidget  777 ui/views/widget/widget_interactive_uitest.cc   MouseEventTrackingWidget widget1;
MouseEventTrackingWidget  785 ui/views/widget/widget_interactive_uitest.cc   MouseEventTrackingWidget widget2;