Enable sensor data injection mode through adb.

Change-Id: I415cf8ff0871fa74babaf9b879c68f210298b472
diff --git a/include/gui/SensorManager.h b/include/gui/SensorManager.h
index 4c34e12..3796067 100644
--- a/include/gui/SensorManager.h
+++ b/include/gui/SensorManager.h
@@ -107,7 +107,7 @@
     ssize_t getSensorList(Sensor const* const** list) const;
     Sensor const* getDefaultSensor(int type);
     sp<SensorEventQueue> createEventQueue(String8 packageName = String8(""), int mode = 0);
-    status_t enableDataInjection(bool enable);
+    bool isDataInjectionEnabled();
 
 private:
     // DeathRecipient interface