am afaf0c54: Prevent duplicate notifications

    // lock on mNotificationList

    int indexOfNotificationLocked(String key) {

        NotificationRecord r = mNotificationsByKey.get(key);

        if (r == null) {

            return -1;

        final int N = mNotificationList.size();

        for (int i = 0; i < N; i++) {

            if (key.equals(mNotificationList.get(i).getKey())) {

                return i;

            }

        int index = Collections.binarySearch(mNotificationList, r, mRankingComparator);

        // Guarantee to return -1 when not found.

        return (index >= 0) ? index : -1;

        }

        return -1;

    }

    private void updateNotificationPulse() {

        synchronized (mNotificationList) {