log screen event to statsd

        if (DBG) Slog.d(TAG, "begin noteScreenState");

        synchronized (mStats) {

            mStats.noteScreenStateLocked(state);

            // TODO: remove this once we figure out properly where and how

            // SCREEN_EVENT = 1003

            // State key: 1

            // State value: state. We can change this to our own def later.

            StatsLog.writeArray(1003, 1, state);

        }

        if (DBG) Slog.d(TAG, "end noteScreenState");

    }