How to use ROS Indigo Opencv tracker

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I'am trying to implement tracker from here for my robot but types and functions unresolved in eclipse, i changed neccesary headers without error

opencv2/tracking.hpp> --> opencv2/video/tracking.hpp

opencv2/videoio.hpp> --> opencv2/videoio/videoio.hpp

opencv2/highgui.hpp> --> opencv2/highgui/highgui.hpp

but still get Type Tracker could not be resolved and function selectROI could not be resolved errors, normally these are in opencv_contrib repo but i am not sure how to implement these to ROS.