Merge "Use filter from CollectionUtils." into sc-dev

import static android.net.NetworkScore.POLICY_TRANSPORT_PRIMARY;

import static android.net.NetworkScore.POLICY_YIELD_TO_BAD_WIFI;

import static com.android.net.module.util.CollectionUtils.filter;

import static com.android.server.connectivity.FullScore.POLICY_ACCEPT_UNVALIDATED;

import static com.android.server.connectivity.FullScore.POLICY_EVER_USER_SELECTED;

import static com.android.server.connectivity.FullScore.POLICY_EVER_VALIDATED_NOT_AVOIDED_WHEN_BAD;

    public NetworkRanker() { }

    // TODO : move to module utils CollectionUtils.

    @NonNull private static <T> ArrayList<T> filter(@NonNull final Collection<T> source,

            @NonNull final Predicate<T> test) {

        final ArrayList<T> matches = new ArrayList<>();

        for (final T e : source) {

            if (test.test(e)) {

                matches.add(e);

            }

        }

        return matches;

    }

    /**

     * Find the best network satisfying this request among the list of passed networks.

     */