Various OpenGLUI changes:

runtime/embedders/openglui/android/eventloop.h

Index: runtime/embedders/openglui/android/eventloop.h
===================================================================
--- runtime/embedders/openglui/android/eventloop.h	(revision 20570)
+++ runtime/embedders/openglui/android/eventloop.h	(working copy)
@@ -6,6 +6,7 @@
 #define EMBEDDERS_OPENGLUI_ANDROID_EVENTLOOP_H_
 
 #include <android_native_app_glue.h>
+#include <android/sensor.h>
 #include "embedders/openglui/common/events.h"
 #include "embedders/openglui/common/input_handler.h"
 #include "embedders/openglui/common/lifecycle_handler.h"
@@ -17,20 +18,33 @@
              InputHandler* input_handler);
 
   protected:
+    void EnableSensorEvents();
+    void DisableSensorEvents();
+
     void ProcessActivityEvent(int32_t command);
     int32_t ProcessInputEvent(AInputEvent* event);
+    void ProcessSensorEvent();
+
     bool OnTouchEvent(AInputEvent* event);
     bool OnKeyEvent(AInputEvent* event);
 
     static void ActivityCallback(android_app* application, int32_t command);
     static int32_t InputCallback(android_app* application, AInputEvent* event);
+    static void SensorCallback(android_app* application,
+        android_poll_source* source);
 
   private:
+    friend class Sensor;
+
     bool enabled_, quit_;
     bool isResumed_, hasSurface_, hasFocus_;
     android_app* application_;
     LifeCycleHandler* lifecycle_handler_;
     InputHandler* input_handler_;
+    const ASensor* sensor_;
+    ASensorManager* sensor_manager_;
+    ASensorEventQueue* sensor_event_queue_;
+    android_poll_source sensor_poll_source_;
 };
 
 #endif  // EMBEDDERS_OPENGLUI_ANDROID_EVENTLOOP_H_