UnregisterForTabNotifications  283 chrome/browser/extensions/api/tabs/tabs_event_router.cc   UnregisterForTabNotifications(contents);
UnregisterForTabNotifications  536 chrome/browser/extensions/api/tabs/tabs_event_router.cc   UnregisterForTabNotifications(old_contents);
UnregisterForTabNotifications  117 chrome/browser/extensions/api/tabs/tabs_event_router.h   void UnregisterForTabNotifications(content::WebContents* contents);