Sensor batching. Changes to the native code.

Bug: 10109508
Change-Id: I7333f3aac76125a8226a4c99c901fb904588df04
diff --git a/services/sensorservice/SensorFusion.h b/services/sensorservice/SensorFusion.h
index 432adbc..b8f360f 100644
--- a/services/sensorservice/SensorFusion.h
+++ b/services/sensorservice/SensorFusion.h
@@ -37,6 +37,7 @@
 
 class SensorFusion : public Singleton<SensorFusion> {
     friend class Singleton<SensorFusion>;
+    static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000;  //  5 Hz
 
     SensorDevice& mSensorDevice;
     Sensor mAcc;