Use oom score instead of process state to indicate process priority.

    sp<IProcessInfoService> service = interface_cast<IProcessInfoService>(binder);

    size_t length = 1;

    int32_t states;

    status_t err = service->getProcessStatesFromPids(length, &pid, &states);

    int32_t state;

    static const int32_t INVALID_ADJ = -10000;

    static const int32_t NATIVE_ADJ = -1000;

    int32_t score = INVALID_ADJ;

    status_t err = service->getProcessStatesAndOomScoresFromPids(length, &pid, &state, &score);

    if (err != OK) {

        ALOGE("getProcessStatesFromPids failed");

        ALOGE("getProcessStatesAndOomScoresFromPids failed");

        return false;

    }

    ALOGV("pid %d states %d", pid, states);

    if (states < 0) {

    ALOGV("pid %d state %d score %d", pid, state, score);

    if (score <= NATIVE_ADJ) {

        ALOGE("pid %d invalid OOM adjustments value %d", pid, score);

        return false;

    }

    // Use process state as the priority. Lower the value, higher the priority.

    *priority = states;

    // Use OOM adjustments value as the priority. Lower the value, higher the priority.

    *priority = score;

    return true;

}