Network time in Chromium.

gistfile1.cpp

base::Time network_time;
base::TimeDelta uncertainty;
if (!g_browser_process->network_time_tracker()->GetNetworkTime(
        base::TimeTicks::Now(), &network_time, &uncertainty)) {
  // Fallback to local time if network time is not available.
  network_time = base::Time::Now();
}

if (network_time.is_null())
  NOTREACHED();