Merge "Fix the same active time tasks disappeared on RunngintTasks" am: e55bd160

    // Comparator to sort by last active time (descending)

    private static final Comparator<Task> LAST_ACTIVE_TIME_COMPARATOR =

            (o1, o2) -> Long.signum(o2.lastActiveTime - o1.lastActiveTime);

            (o1, o2) -> {

                return o1.lastActiveTime == o2.lastActiveTime

                        ? Integer.signum(o2.mTaskId - o1.mTaskId) :

                        Long.signum(o2.lastActiveTime - o1.lastActiveTime);

            };

    private final TreeSet<Task> mTmpSortedSet = new TreeSet<>(LAST_ACTIVE_TIME_COMPARATOR);