Auto merge of #17473 - moz-servo-sync:gecko-backout, r=moz-servo-sync
Auto merge of #17473 - moz-servo-sync:gecko-backout, r=moz-servo-sync

Multiple gecko backouts

@bors-servo r+ force treeclosed=9001

Backed out changeset f5041651b877 (bug 17452) as requested by glob. r=backout

Backs out https://github.com/servo/servo/pull/17452

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Backed out changeset de9bb450199d  on request from glob

Backs out https://github.com/servo/servo/pull/17452

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