TRT_TrackExtensionAlg → Tracking Relation

File in InnerDetector/InDetRecAlgs/TRT_TrackExtensionAlg/TRT_TrackExtensionAlg	Includes file in Tracking
TRT_TrackExtensionAlg.h	TrkEvent / TrkTrack / TrkTrack / TrackCollection.h
TRT_TrackExtensionAlg.h	TrkEvent / TrkTrack / TrkTrack / TrackExtensionMap.h