test_panel_notification_observer.h    8 chrome/browser/ui/panels/test_panel_active_state_observer.h #include "chrome/browser/ui/panels/test_panel_notification_observer.h"
test_panel_notification_observer.h    8 chrome/browser/ui/panels/test_panel_collection_squeeze_observer.h #include "chrome/browser/ui/panels/test_panel_notification_observer.h"
test_panel_notification_observer.h    5 chrome/browser/ui/panels/test_panel_notification_observer.cc #include "chrome/browser/ui/panels/test_panel_notification_observer.h"