Auto merge of #18766 - glennw:update-wr-drv-op-clip-rad, r=pcwalton
Auto merge of #18766 - glennw:update-wr-drv-op-clip-rad, r=pcwalton

Update WR.

* Support border radii clips on radial gradients.
* Optimizations to DL building time.
* Remove deprecated nested DL APIs.
* Another mac driver bug workaround.

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