IsWindowVisible  1213 chrome/browser/ui/gtk/panels/panel_gtk.cc bool GtkNativePanelTesting::IsWindowVisible() const {
IsWindowVisible   202 chrome/browser/ui/views/panels/panel_view.cc bool NativePanelTestingWin::IsWindowVisible() const {
IsWindowVisible   594 ui/base/x/x11_util.cc bool IsWindowVisible(XID window) {