LL_I2L(interval, mNotificationInterval);
LL_I2L(interval, GetNotificationInterval());
HTMLContentSink::IsTimeToNotify(){  if (!mNotifyOnTimer || !mLayoutStarted || !mBackoffCount || mInMonolithicContainer) {    return PR_FALSE;  }  PRTime now = PR_Now();  PRInt64 interval, diff;    LL_I2L(interval, mNotificationInterval);  LL_SUB(diff, now, mLastNotificationTime);  if (LL_CMP(diff, >, interval)) {    mBackoffCount--;    return PR_TRUE;  }  else {    return PR_FALSE;  }}