GetQPCDriftMicroseconds  603 base/time/time.h   static int64 GetQPCDriftMicroseconds();
GetQPCDriftMicroseconds  509 base/time/time_win.cc   return HighResNowSingleton::GetInstance()->GetQPCDriftMicroseconds();
GetQPCDriftMicroseconds  222 base/time/time_win_unittest.cc     int64 drift_microseconds = TimeTicks::GetQPCDriftMicroseconds();