am 86ea1f5f: Initial checkin of spot presentation for touchpad gestures. (DO NOT MERGE)

    // Oldest sample to consider when calculating the velocity.

    static const nsecs_t MAX_AGE = 200 * 1000000; // 200 ms

    // When the total duration of the window of samples being averaged is less

    // than the window size, the resulting velocity is scaled to reduce the impact

    // of overestimation in short traces.

    static const nsecs_t MIN_WINDOW = 100 * 1000000; // 100 ms

    // The minimum duration between samples when estimating velocity.

    static const nsecs_t MIN_DURATION = 10 * 1000000; // 10 ms

        const Position& oldestPosition =

                oldestMovement.positions[oldestMovement.idBits.getIndexOfBit(id)];

        nsecs_t lastDuration = 0;

        while (numTouches-- > 1) {

            if (++index == HISTORY_SIZE) {

                index = 0;

        // Make sure we used at least one sample.

        if (samplesUsed != 0) {

            // Scale the velocity linearly if the window of samples is small.

            nsecs_t totalDuration = newestMovement.eventTime - oldestMovement.eventTime;

            if (totalDuration < MIN_WINDOW) {

                float scale = float(totalDuration) / float(MIN_WINDOW);

                accumVx *= scale;

                accumVy *= scale;

            }

            *outVx = accumVx;

            *outVy = accumVy;

            return true;

#endif

void Looper::sendMessage(const sp<MessageHandler>& handler, const Message& message) {

    sendMessageAtTime(LLONG_MIN, handler, message);

    nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);

    sendMessageAtTime(now, handler, message);

}

void Looper::sendMessageDelayed(nsecs_t uptimeDelay, const sp<MessageHandler>& handler,