Merge "Tidy up libcore.timezone APIs" am: 45834d96 am: 35ffa523

        mCountryTimeZones = countryTimeZones;

        List<String> timeZoneIds = countryTimeZones.getTimeZoneMappings().stream()

                .filter(timeZoneMapping ->

                        timeZoneMapping.showInPicker && (timeZoneMapping.notUsedAfter == null

                                || timeZoneMapping.notUsedAfter >= MIN_USE_DATE_OF_TIMEZONE))

                .map(timeZoneMapping -> timeZoneMapping.timeZoneId)

                        timeZoneMapping.isShownInPicker()

                                && (timeZoneMapping.getNotUsedAfter() == null

                                || timeZoneMapping.getNotUsedAfter() >= MIN_USE_DATE_OF_TIMEZONE))

                .map(timeZoneMapping -> timeZoneMapping.getTimeZoneId())

                .collect(Collectors.toList());

        mTimeZoneIds = Collections.unmodifiableList(timeZoneIds);

    }