kProtocolUnknown 171 chrome/browser/ui/webui/chromeos/nfc_debug_ui.cc case NfcTag::kProtocolUnknown: kProtocolUnknown 47 device/nfc/nfc_tag_chromeos.cc return NfcTag::kProtocolUnknown; kProtocolUnknown 101 device/nfc/nfc_tag_chromeos.cc if (type == NfcTag::kTagTypeUnknown || protocol == kProtocolUnknown) {