Merge "CountDownTimer: not skip onTick()" am: 224d9e48 am: 9997fcc7

                if (millisLeft <= 0) {

                    onFinish();

                } else if (millisLeft < mCountdownInterval) {

                    // no tick, just delay until done

                    sendMessageDelayed(obtainMessage(MSG), millisLeft);

                } else {

                    long lastTickStart = SystemClock.elapsedRealtime();

                    onTick(millisLeft);

                    // take into account user's onTick taking time to execute

                    long delay = lastTickStart + mCountdownInterval - SystemClock.elapsedRealtime();

                    long lastTickDuration = SystemClock.elapsedRealtime() - lastTickStart;

                    long delay;

                    if (millisLeft < mCountdownInterval) {

                        // just delay until done

                        delay = millisLeft - lastTickDuration;

                        // special case: user's onTick took more than interval to

                        // complete, trigger onFinish without delay

                        if (delay < 0) delay = 0;

                    } else {

                        delay = mCountdownInterval - lastTickDuration;

                        // special case: user's onTick took more than interval to

                        // complete, skip to next interval

                        while (delay < 0) delay += mCountdownInterval;

                    }

                    sendMessageDelayed(obtainMessage(MSG), delay);

                }