Extract the shape parsing code from GradientKind::parse_radial
Extract the shape parsing code from GradientKind::parse_radial

peterjoel/servo,DominoTree/servo,dati91/servo,eddyb/servo,nnethercote/servo,cbrewster/servo,KiChjang/servo,SimonSapin/servo,larsbergstrom/servo,paulrouget/servo,ConnorGBrewster/servo,emilio/servo,CJ8664/servo,mattnenterprise/servo,splav/servo,dsandeephegde/servo,emilio/servo,cbrewster/servo,mattnenterprise/servo,sadmansk/servo,nnethercote/servo,upsuper/servo,splav/servo,dati91/servo,canaltinova/servo,dsandeephegde/servo,ConnorGBrewster/servo,avadacatavra/servo,notriddle/servo,mbrubeck/servo,pyfisch/servo,fiji-flo/servo,CJ8664/servo,szeged/servo,sadmansk/servo,emilio/servo,dsandeephegde/servo,DominoTree/servo,dati91/servo,cbrewster/servo,jimberlage/servo,peterjoel/servo,avadacatavra/servo,rnestler/servo,notriddle/servo,jimberlage/servo,CJ8664/servo,paulrouget/servo,DominoTree/servo,eddyb/servo,pyfisch/servo,pyfisch/servo,dsandeephegde/servo,fiji-flo/servo,thiagopnts/servo,szeged/servo,fiji-flo/servo,avadacatavra/servo,paulrouget/servo,pyfisch/servo,jimberlage/servo,mattnenterprise/servo,canaltinova/servo,paulrouget/servo,dsandeephegde/servo,thiagopnts/servo,dsandeephegde/servo,szeged/servo,SimonSapin/servo,szeged/servo,splav/servo,emilio/servo,splav/servo,upsuper/servo,peterjoel/servo,dsandeephegde/servo,saneyuki/servo,jimberlage/servo,upsuper/servo,upsuper/servo,nnethercote/servo,DominoTree/servo,sadmansk/servo,sadmansk/servo,rnestler/servo,splav/servo,cbrewster/servo,rnestler/servo,dati91/servo,dati91/servo,avadacatavra/servo,larsbergstrom/servo,KiChjang/servo,CJ8664/servo,nnethercote/servo,nnethercote/servo,notriddle/servo,notriddle/servo,emilio/servo,KiChjang/servo,mbrubeck/servo,emilio/servo,mbrubeck/servo,eddyb/servo,splav/servo,canaltinova/servo,peterjoel/servo,DominoTree/servo,CJ8664/servo,sadmansk/servo,thiagopnts/servo,paulrouget/servo,paulrouget/servo,DominoTree/servo,notriddle/servo,pyfisch/servo,mbrubeck/servo,notriddle/servo,avadacatavra/servo,thiagopnts/servo,saneyuki/servo,peterjoel/servo,thiagopnts/servo,pyfisch/servo,cbrewster/servo,splav/servo,mbrubeck/servo,CJ8664/servo,paulrouget/servo,thiagopnts/servo,emilio/servo,szeged/servo,mattnenterprise/servo,KiChjang/servo,eddyb/servo,sadmansk/servo,saneyuki/servo,eddyb/servo,dati91/servo,CJ8664/servo,anthgur/servo,thiagopnts/servo,avadacatavra/servo,upsuper/servo,dsandeephegde/servo,ConnorGBrewster/servo,mattnenterprise/servo,ConnorGBrewster/servo,DominoTree/servo,larsbergstrom/servo,splav/servo,canaltinova/servo,nnethercote/servo,KiChjang/servo,SimonSapin/servo,mbrubeck/servo,peterjoel/servo,saneyuki/servo,larsbergstrom/servo,dati91/servo,fiji-flo/servo,paulrouget/servo,notriddle/servo,saneyuki/servo,cbrewster/servo,larsbergstrom/servo,emilio/servo,cbrewster/servo,saneyuki/servo,rnestler/servo,szeged/servo,canaltinova/servo,larsbergstrom/servo,dati91/servo,jimberlage/servo,szeged/servo,larsbergstrom/servo,pyfisch/servo,saneyuki/servo,sadmansk/servo,notriddle/servo,avadacatavra/servo,jimberlage/servo,mbrubeck/servo,KiChjang/servo,upsuper/servo,splav/servo,KiChjang/servo,peterjoel/servo,pyfisch/servo,jimberlage/servo,fiji-flo/servo,canaltinova/servo,fiji-flo/servo,SimonSapin/servo,anthgur/servo,ConnorGBrewster/servo,emilio/servo,jimberlage/servo,szeged/servo,szeged/servo,paulrouget/servo,nnethercote/servo,anthgur/servo,nnethercote/servo,CJ8664/servo,peterjoel/servo,jimberlage/servo,peterjoel/servo,SimonSapin/servo,canaltinova/servo,larsbergstrom/servo,DominoTree/servo,nnethercote/servo,canaltinova/servo,nnethercote/servo,pyfisch/servo,notriddle/servo,anthgur/servo,ConnorGBrewster/servo,eddyb/servo,larsbergstrom/servo,saneyuki/servo,anthgur/servo,cbrewster/servo,paulrouget/servo,anthgur/servo,larsbergstrom/servo,thiagopnts/servo,upsuper/servo,anthgur/servo,DominoTree/servo,SimonSapin/servo,DominoTree/servo,mattnenterprise/servo,rnestler/servo,splav/servo,rnestler/servo,KiChjang/servo,fiji-flo/servo,ConnorGBrewster/servo,ConnorGBrewster/servo,fiji-flo/servo,eddyb/servo,peterjoel/servo,szeged/servo,KiChjang/servo,sadmansk/servo,mbrubeck/servo,KiChjang/servo,rnestler/servo,SimonSapin/servo,rnestler/servo,upsuper/servo,saneyuki/servo,SimonSapin/servo,mattnenterprise/servo,avadacatavra/servo,pyfisch/servo,emilio/servo,notriddle/servo,anthgur/servo,mattnenterprise/servo,saneyuki/servo,eddyb/servo