TrkGaussianSumFilter → TrkDetDescr Relation

File in Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter	Includes file in Tracking/TrkDetDescr
GaussianSumFitter.h	TrkSurfaces / TrkSurfaces / Tracking/TrkDetDescr/TrkSurfaces/TrkSurfaces/Surface.h
GaussianSumFitter.h	TrkDetElementBase / TrkDetElementBase / TrkDetElementBase.h
GsfExtrapolator.h	TrkGeometry / TrkGeometry / MagneticFieldProperties.h
IMultiStateExtrapolator.h	TrkSurfaces / TrkSurfaces / BoundaryCheck.h