void InitWith(scoped_refptr<base::TaskRunner> blocking_task_runner);
void Shutdown();
// chromeos::AccelerometerReader::Delegate
virtual void HandleAccelerometerUpdate(
void InitWith(scoped_refptr<base::TaskRunner> blocking_task_runner);
void Shutdown();
// chromeos::AccelerometerReader::Delegate
virtual void HandleAccelerometerUpdate(