Merge "Add package change watch for RoleManagerService"

import android.Manifest;

import android.annotation.CheckResult;

import android.annotation.MainThread;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.UserIdInt;

    @Override

    public void onStart() {

        publishBinderService(Context.ROLE_SERVICE, new Stub());

        //TODO add watch for new user creation and run default grants for them

        //TODO add package update watch to detect PermissionController upgrade and run def. grants

        IntentFilter intentFilter = new IntentFilter();

        intentFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);

        intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);

        intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);

        intentFilter.addDataScheme("package");

        intentFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);

        getContext().registerReceiverAsUser(new BroadcastReceiver() {

            @Override

            public void onReceive(Context context, Intent intent) {

                int userId = UserHandle.getUserId(intent.getIntExtra(Intent.EXTRA_UID, -1));

                if (RemoteRoleControllerService.DEBUG) {

                    Slog.i(LOG_TAG,

                            "Packages changed - re-running initial grants for user " + userId);

                }

                performInitialGrantsIfNecessary(userId);

            }

        }, UserHandle.SYSTEM, intentFilter, null /* broadcastPermission */, null /* handler */);

    }

    @Override

    public void onStartUser(@UserIdInt int userId) {

        performInitialGrantsIfNecessary(userId);

    }

    @MainThread

    private void performInitialGrantsIfNecessary(@UserIdInt int userId) {

        RoleUserState userState;

        synchronized (mLock) {

            userState = getUserStateLocked(userId);