WM_MUTTER         121 chrome/browser/ui/panels/panel_manager.cc       wm_type != ui::WM_MUTTER &&
WM_MUTTER        1047 ui/base/x/x11_util.cc           wm_type == WM_MUTTER ||
WM_MUTTER        1333 ui/base/x/x11_util.cc       return WM_MUTTER; // GNOME Shell uses Mutter
WM_MUTTER        1335 ui/base/x/x11_util.cc       return WM_MUTTER;