Remove unused LayoutTaskData::screen_size.
Remove unused LayoutTaskData::screen_size.

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