Merge "AlarmManager: Store the next dst transition in system properties" into main

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.text.SimpleDateFormat;

import java.time.Instant;

import java.time.zone.ZoneOffsetTransition;

import java.time.zone.ZoneRules;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Calendar;

import java.util.TimeZone;

import java.util.TreeSet;

import java.util.concurrent.ThreadLocalRandom;

import java.util.concurrent.TimeUnit;

import java.util.function.Predicate;

/**

    private static final long TEMPORARY_QUOTA_DURATION = INTERVAL_DAY;

    // System property read on some device configurations to initialize time properly.

    // System properties read on some device configurations to initialize time properly and

    // perform DST transitions at the bootloader level.

    private static final String TIMEOFFSET_PROPERTY = "persist.sys.time.offset";

    private static final String DST_TRANSITION_PROPERTY = "persist.sys.time.dst_transition";

    private static final String DST_OFFSET_PROPERTY = "persist.sys.time.dst_offset";

    private final Intent mBackgroundIntent

            = new Intent().addFlags(Intent.FLAG_FROM_BACKGROUND);

            final int gmtOffset = newZone.getOffset(mInjector.getCurrentTimeMillis());

            SystemProperties.set(TIMEOFFSET_PROPERTY, String.valueOf(gmtOffset));

            final ZoneRules rules = newZone.toZoneId().getRules();

            final ZoneOffsetTransition transition = rules.nextTransition(Instant.now());

            if (null != transition) {

                // Get the offset between the time after the DST transition and before.

                final long transitionOffset = TimeUnit.SECONDS.toMillis((

                        transition.getOffsetAfter().getTotalSeconds()

                        - transition.getOffsetBefore().getTotalSeconds()));

                // Time when the next DST transition is programmed.

                final long nextTransition = TimeUnit.SECONDS.toMillis(transition.toEpochSecond());

                SystemProperties.set(DST_TRANSITION_PROPERTY, String.valueOf(nextTransition));

                SystemProperties.set(DST_OFFSET_PROPERTY, String.valueOf(transitionOffset));

            }

        }

        // Clear the default time zone in the system server process. This forces the next call