The settings UI was not shown. The settings UI was shown and Chrome was set as default PDF viewer. The settings UI was shown, but Chrome wasn't set as default. The fallback settings UI was shown and Chrome was set as default. The fallback settings UI was shown, but Chrome wasn't set as default. The settings UI failed to open. The user clicked the "Set as default" button. The user explicitly closed the infobar. The user did not interact with the infobar, logged at object destruction.