RemoveUpdateObserver   92 ash/system/tray/system_tray_notifier.cc void SystemTrayNotifier::RemoveUpdateObserver(UpdateObserver* observer) {
RemoveUpdateObserver 2558 chrome/browser/extensions/extension_service.cc void ExtensionService::RemoveUpdateObserver(
RemoveUpdateObserver   80 webkit/browser/appcache/appcache_group.cc void AppCacheGroup::RemoveUpdateObserver(UpdateObserver* observer) {