Change native functions' interface for gesture

Change-Id: I106a858f0be7452dd89f425805a6f72aa88c3f65
diff --git a/native/jni/src/proximity_info.h b/native/jni/src/proximity_info.h
index fec6555..d58935c 100644
--- a/native/jni/src/proximity_info.h
+++ b/native/jni/src/proximity_info.h
@@ -98,6 +98,10 @@
         return GRID_HEIGHT;
     }
 
+    // Returns the keyboard key-center information.
+    void getCenters(int *centersX, int *centersY, int *codeToKeyIndex, int *keyToCodeIndex,
+            int *keyCount, int *keyWidth) const;
+
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfo);
     // The max number of the keys in one keyboard layout