root/ash/wm/panels/

1. panel_frame_view.cc
2. panel_frame_view.h
3. panel_layout_manager.cc
4. panel_layout_manager.h
5. panel_layout_manager_unittest.cc
6. panel_window_event_handler.cc
7. panel_window_event_handler.h
8. panel_window_resizer.cc
9. panel_window_resizer.h
10. panel_window_resizer_unittest.cc