Merge "Add knownCerts to system API and copy constructor."

    field public static final int PROTECTION_FLAG_SYSTEM_TEXT_CLASSIFIER = 65536; // 0x10000

    field @Deprecated public static final int PROTECTION_FLAG_WELLBEING = 131072; // 0x20000

    field @Nullable public final String backgroundPermission;

    field @NonNull public java.util.Set<java.lang.String> knownCerts;

    field @StringRes public int requestRes;

  }

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.StringRes;

import android.annotation.SuppressLint;

import android.annotation.SystemApi;

import android.annotation.TestApi;

import android.compat.annotation.UnsupportedAppUsage;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.util.Collections;

import java.util.Set;

/**

     *

     * @hide

     */

    public @Nullable Set<String> knownCerts;

    // Already being used as mutable and most other fields in this class are also mutable.

    @SuppressLint("MutableBareField")

    @SystemApi

    public @NonNull Set<String> knownCerts = Collections.emptySet();

    /** @hide */

    public static int fixProtectionLevel(int level) {

        descriptionRes = orig.descriptionRes;

        requestRes = orig.requestRes;

        nonLocalizedDescription = orig.nonLocalizedDescription;

        // Note that knownCerts wasn't properly copied before Android U.

        knownCerts = orig.knownCerts;

    }

    /**