CHROMEG_CALLBACK_4   27 chrome/browser/ui/libgtk2ui/gtk2_signal.h   CHROMEG_CALLBACK_4(CLASS, RETURN, METHOD, GtkWidget*, ARG1, ARG2, ARG3,   \
CHROMEG_CALLBACK_4   27 ui/base/gtk/gtk_signal.h   CHROMEG_CALLBACK_4(CLASS, RETURN, METHOD, GtkWidget*, ARG1, ARG2, ARG3,   \