CHROMEGTK_VIRTUAL_CALLBACK_0   40 chrome/browser/ui/libgtk2ui/gtk2_signal.h #define CHROMEGTK_VIRTUAL_CALLBACK_0(CLASS, RETURN, METHOD) \
CHROMEGTK_VIRTUAL_CALLBACK_0   40 ui/base/gtk/gtk_signal.h #define CHROMEGTK_VIRTUAL_CALLBACK_0(CLASS, RETURN, METHOD) \