Merge "Replace HashSet with memory efficient ArraySet collection" into tm-dev

import android.os.UserHandle;

import android.text.format.DateFormat;

import android.text.format.DateUtils;

import android.util.ArraySet;

import android.util.Log;

import androidx.annotation.VisibleForTesting;

import java.time.Duration;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.HashSet;

import java.util.Iterator;

import java.util.List;

import java.util.Locale;

            }

            // Collects all keys in these three time slot records as all populations.

            final Set<String> allBatteryHistEntryKeys = new HashSet<>();

            final Set<String> allBatteryHistEntryKeys = new ArraySet<>();

            allBatteryHistEntryKeys.addAll(currentBatteryHistMap.keySet());

            allBatteryHistEntryKeys.addAll(nextBatteryHistMap.keySet());

            allBatteryHistEntryKeys.addAll(nextTwoBatteryHistMap.keySet());

import android.content.pm.PackageManager;

import android.net.Uri;

import android.os.Process;

import android.util.ArraySet;

import android.util.SparseIntArray;

import com.android.internal.util.ArrayUtils;

import com.android.settingslib.fuelgauge.Estimate;

import java.util.HashSet;

import java.util.Map;

import java.util.Set;

    @Override

    public Set<CharSequence> getHideBackgroundUsageTimeSet(Context context) {

        return new HashSet<>();

        return new ArraySet<>();

    }

    @Override