layout_thread: Add an assertion that reflows destined for the display have no layout queries, and vice versa.
layout_thread: Add an assertion that reflows destined for the display
have no layout queries, and vice versa.

We should clean this up, but let's enforce it with an assert for now.

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