Merge "Move MIN_USE_DATE_OF_TIMEZONE to TimeUtils."

package com.android.settings.datetime.timezone.model;

import android.util.ArraySet;

import android.util.TimeUtils;

import com.android.i18n.timezone.CountryTimeZones;

import java.time.Instant;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

 */

public class FilteredCountryTimeZones {

    /**

     * The timestamp used to determine which time zones to show to users by using the notUsedAfter

     * metadata Android holds for each time zone.

     *

     * notUsedAfter exists because some time zones effectively "merge" with other time zones after

     * a given point in time (i.e. they have identical transitions, offsets, etc.). After that

     * point we only need to show one of the functionally identical ones.

     *

     * Rather than using System.currentTimeMillis(), UX folks asked for consistent behavior and so

     * a timestamp known to be in the recent past is used. This should be updated occasionally but

     * it doesn't have to be very often.

     */

    private static final Instant MIN_USE_DATE_OF_TIMEZONE =

            Instant.ofEpochMilli(1546300800000L); // 1/1/2019 00:00 UTC

    private final CountryTimeZones mCountryTimeZones;

    private final List<String> mPreferredTimeZoneIds;

    private final Set<String> mAlternativeTimeZoneIds;

        Set<String> alternativeTimeZoneIds = new ArraySet<>();

        for (CountryTimeZones.TimeZoneMapping timeZoneMapping :

                countryTimeZones.getTimeZoneMappings()) {

            if (timeZoneMapping.isShownInPickerAt(MIN_USE_DATE_OF_TIMEZONE)) {

            if (timeZoneMapping.isShownInPickerAt(TimeUtils.MIN_USE_DATE_OF_TIMEZONE)) {

                String timeZoneId = timeZoneMapping.getTimeZoneId();

                timeZoneIds.add(timeZoneId);

                alternativeTimeZoneIds.addAll(timeZoneMapping.getAlternativeIds());