REASON_UPDATE     477 chrome/browser/background/background_contents_service.cc         case UnloadedExtensionInfo::REASON_UPDATE: {
REASON_UPDATE    1605 chrome/browser/extensions/extension_service.cc     UnloadExtension(extension->id(), UnloadedExtensionInfo::REASON_UPDATE);
REASON_UPDATE     280 chrome/browser/themes/theme_service.cc       if (unloaded_details->reason != UnloadedExtensionInfo::REASON_UPDATE &&
REASON_UPDATE    1354 chrome/browser/ui/ash/launcher/chrome_launcher_controller_unittest.cc                                       UnloadedExtensionInfo::REASON_UPDATE);