auto merge of #5312 : frewsxcv/servo/cleanup-view-source, r=jdm
auto merge of #5312 : frewsxcv/servo/cleanup-view-source, r=jdm

Fixes #5304

CJ8664/servo,evilpie/servo,karlito40/servo,A-deLuna/servo,fiji-flo/servo,karlito40/servo,rnestler/servo,saratang/servo,j3parker/servo,g-k/servo,upsuper/servo,hyowon/servo,rixrix/servo,zhangjunlei26/servo,nrc/servo,thiagopnts/servo,nerith/servo,rixrix/servo,wpgallih/servo,larsbergstrom/servo,tafia/servo,s142857/servo,mdibaiee/servo,j3parker/servo,s142857/servo,saneyuki/servo,dvberkel/servo,rentongzhang/servo,evilpie/servo,RenaudParis/servo,KiChjang/servo,mdibaiee/servo,rentongzhang/servo,wartman4404/servo,wpgallih/servo,avadacatavra/servo,AnthonyBroadCrawford/servo,paulrouget/servo,zentner-kyle/servo,s142857/servo,mt2d2/servo,DominoTree/servo,GreenRecycleBin/servo,samfoo/servo,DominoTree/servo,pyfisch/servo,vks/servo,jlegendary/servo,sadmansk/servo,jdramani/servo,mattnenterprise/servo,emilio/servo,DominoTree/servo,kindersung/servo,boghison/servo,dhananjay92/servo,echochamber/servo,indykish/servo,A-deLuna/servo,mt2d2/servo,aweinstock314/servo,nick-thompson/servo,fiji-flo/servo,steveklabnik/servo,rnestler/servo,g-k/servo,emilio/servo,saneyuki/servo,pyecs/servo,pyecs/servo,peterjoel/servo,KiChjang/servo,fiji-flo/servo,KiChjang/servo,jimberlage/servo,brendandahl/servo,splav/servo,j3parker/servo,wpgallih/servo,jgraham/servo,meh/servo,nerith/servo,anthgur/servo,KiChjang/servo,dsandeephegde/servo,brendandahl/servo,DominoTree/servo,indykish/servo,AnthonyBroadCrawford/servo,echochamber/servo,szeged/servo,mbrubeck/servo,tschneidereit/servo,splav/servo,runarberg/servo,dsandeephegde/servo,runarberg/servo,nerith/servo,nerith/servo,DominoTree/servo,pgonda/servo,youprofit/servo,samfoo/servo,g-k/servo,GyrosOfWar/servo,szeged/servo,saratang/servo,akosel/servo,karlito40/servo,samfoo/servo,youprofit/servo,larsbergstrom/servo,dsandeephegde/servo,saratang/servo,dhananjay92/servo,paulrouget/servo,WriterOfAlicrow/servo,pgonda/servo,codemac/servo,notriddle/servo,emilio/servo,AnthonyBroadCrawford/servo,WriterOfAlicrow/servo,szeged/servo,anthgur/servo,caldwell/servo,aweinstock314/servo,bjwbell/servo,nnethercote/servo,rixrix/servo,emilio/servo,j3parker/servo,steveklabnik/servo,sadmansk/servo,pyecs/servo,runarberg/servo,notriddle/servo,GyrosOfWar/servo,bjwbell/servo,DominoTree/servo,pgonda/servo,pyfisch/servo,wpgallih/servo,nnethercote/servo,GreenRecycleBin/servo,nrc/servo,codemac/servo,saneyuki/servo,wartman4404/servo,A-deLuna/servo,canaltinova/servo,huonw/servo,RenaudParis/servo,jimberlage/servo,evilpie/servo,ryancanhelpyou/servo,mdibaiee/servo,jgraham/servo,canaltinova/servo,anthgur/servo,DominoTree/servo,caldwell/servo,meh/servo,meh/servo,szeged/servo,A-deLuna/servo,cbrewster/servo,jimberlage/servo,ryancanhelpyou/servo,RenaudParis/servo,bjwbell/servo,GreenRecycleBin/servo,rixrix/servo,pyecs/servo,bjwbell/servo,peterjoel/servo,bjwbell/servo,WriterOfAlicrow/servo,mbrubeck/servo,rentongzhang/servo,hyowon/servo,SimonSapin/servo,upsuper/servo,upsuper/servo,mt2d2/servo,notriddle/servo,GyrosOfWar/servo,caldwell/servo,dati91/servo,upsuper/servo,dhananjay92/servo,wpgallih/servo,meh/servo,RenaudParis/servo,brendandahl/servo,cbrewster/servo,zhangjunlei26/servo,CJ8664/servo,emilio/servo,brendandahl/servo,fiji-flo/servo,mattnenterprise/servo,codemac/servo,ConnorGBrewster/servo,deokjinkim/servo,RenaudParis/servo,indykish/servo,tempbottle/servo,canaltinova/servo,wartman4404/servo,A-deLuna/servo,huonw/servo,ryancanhelpyou/servo,hyowon/servo,mdibaiee/servo,zhangjunlei26/servo,nnethercote/servo,avadacatavra/servo,steveklabnik/servo,GyrosOfWar/servo,dati91/servo,runarberg/servo,GyrosOfWar/servo,pyfisch/servo,A-deLuna/servo,dvberkel/servo,rnestler/servo,karlito40/servo,sadmansk/servo,aidanhs/servo,boghison/servo,GreenRecycleBin/servo,steveklabnik/servo,pyfisch/servo,anthgur/servo,splav/servo,anthgur/servo,evilpie/servo,KiChjang/servo,ConnorGBrewster/servo,cbrewster/servo,zentner-kyle/servo,pyecs/servo,dati91/servo,cbrewster/servo,nnethercote/servo,SimonSapin/servo,jimberlage/servo,aidanhs/servo,s142857/servo,peterjoel/servo,zentner-kyle/servo,brendandahl/servo,walac/servo,szeged/servo,saratang/servo,dhananjay92/servo,mattnenterprise/servo,bjwbell/servo,tempbottle/servo,kindersung/servo,wartman4404/servo,emilio/servo,cbrewster/servo,canaltinova/servo,mbrubeck/servo,nnethercote/servo,tafia/servo,larsbergstrom/servo,mattnenterprise/servo,anthgur/servo,KiChjang/servo,indykish/servo,wpgallih/servo,tempbottle/servo,rentongzhang/servo,dhananjay92/servo,GreenRecycleBin/servo,splav/servo,deokjinkim/servo,akosel/servo,rnestler/servo,jdramani/servo,akosel/servo,dsandeephegde/servo,szeged/servo,mdibaiee/servo,jimberlage/servo,dsandeephegde/servo,eddyb/servo,notriddle/servo,larsbergstrom/servo,jdramani/servo,eddyb/servo,notriddle/servo,emilio/servo,ConnorGBrewster/servo,deokjinkim/servo,s142857/servo,tafia/servo,jgraham/servo,deokjinkim/servo,dati91/servo,canaltinova/servo,echochamber/servo,indykish/servo,nerith/servo,mbrubeck/servo,jlegendary/servo,ConnorGBrewster/servo,nnethercote/servo,evilpie/servo,boghison/servo,huonw/servo,aidanhs/servo,kindersung/servo,RenaudParis/servo,boghison/servo,vks/servo,mattnenterprise/servo,rnestler/servo,jgraham/servo,rnestler/servo,s142857/servo,aidanhs/servo,paulrouget/servo,SimonSapin/servo,vks/servo,evilpie/servo,saneyuki/servo,mt2d2/servo,steveklabnik/servo,dvberkel/servo,jlegendary/servo,ryancanhelpyou/servo,avadacatavra/servo,ConnorGBrewster/servo,emilio/servo,saratang/servo,saneyuki/servo,tempbottle/servo,cbrewster/servo,hyowon/servo,wpgallih/servo,nick-thompson/servo,karlito40/servo,walac/servo,paulrouget/servo,wpgallih/servo,emilio/servo,hyowon/servo,dsandeephegde/servo,jdramani/servo,walac/servo,splav/servo,tschneidereit/servo,SimonSapin/servo,larsbergstrom/servo,upsuper/servo,larsbergstrom/servo,canaltinova/servo,DominoTree/servo,vks/servo,A-deLuna/servo,CJ8664/servo,CJ8664/servo,tschneidereit/servo,zentner-kyle/servo,steveklabnik/servo,jlegendary/servo,tschneidereit/servo,karlito40/servo,ConnorGBrewster/servo,runarberg/servo,codemac/servo,mbrubeck/servo,brendandahl/servo,boghison/servo,eddyb/servo,jdramani/servo,caldwell/servo,boghison/servo,peterjoel/servo,thiagopnts/servo,mdibaiee/servo,pgonda/servo,fiji-flo/servo,SimonSapin/servo,ConnorGBrewster/servo,huonw/servo,KiChjang/servo,mattnenterprise/servo,GyrosOfWar/servo,paulrouget/servo,zentner-kyle/servo,paulrouget/servo,dagnir/servo,tafia/servo,fiji-flo/servo,g-k/servo,walac/servo,peterjoel/servo,paulrouget/servo,AnthonyBroadCrawford/servo,nrc/servo,evilpie/servo,rnestler/servo,echochamber/servo,splav/servo,eddyb/servo,sadmansk/servo,sadmansk/servo,rixrix/servo,mdibaiee/servo,aweinstock314/servo,akosel/servo,boghison/servo,indykish/servo,saneyuki/servo,hyowon/servo,eddyb/servo,dagnir/servo,nick-thompson/servo,dvberkel/servo,nnethercote/servo,rnestler/servo,zhangjunlei26/servo,huonw/servo,thiagopnts/servo,cbrewster/servo,szeged/servo,pgonda/servo,rentongzhang/servo,sadmansk/servo,zhangjunlei26/servo,meh/servo,echochamber/servo,KiChjang/servo,zentner-kyle/servo,pgonda/servo,cbrewster/servo,avadacatavra/servo,pyfisch/servo,youprofit/servo,saneyuki/servo,j3parker/servo,nick-thompson/servo,paulrouget/servo,canaltinova/servo,anthgur/servo,echochamber/servo,tschneidereit/servo,SimonSapin/servo,peterjoel/servo,tempbottle/servo,aweinstock314/servo,jlegendary/servo,kindersung/servo,akosel/servo,KiChjang/servo,saratang/servo,CJ8664/servo,s142857/servo,ConnorGBrewster/servo,g-k/servo,saneyuki/servo,jimberlage/servo,jgraham/servo,vks/servo,dati91/servo,akosel/servo,codemac/servo,karlito40/servo,jgraham/servo,dsandeephegde/servo,walac/servo,nerith/servo,eddyb/servo,ryancanhelpyou/servo,paulrouget/servo,pyfisch/servo,pgonda/servo,runarberg/servo,huonw/servo,dagnir/servo,deokjinkim/servo,splav/servo,KiChjang/servo,canaltinova/servo,rentongzhang/servo,fiji-flo/servo,dvberkel/servo,splav/servo,jlegendary/servo,tafia/servo,fiji-flo/servo,nick-thompson/servo,AnthonyBroadCrawford/servo,upsuper/servo,rentongzhang/servo,splav/servo,deokjinkim/servo,samfoo/servo,caldwell/servo,tafia/servo,aidanhs/servo,notriddle/servo,tempbottle/servo,j3parker/servo,nick-thompson/servo,rixrix/servo,mt2d2/servo,nnethercote/servo,rixrix/servo,mattnenterprise/servo,brendandahl/servo,dhananjay92/servo,AnthonyBroadCrawford/servo,dati91/servo,mbrubeck/servo,SimonSapin/servo,DominoTree/servo,huonw/servo,jimberlage/servo,saneyuki/servo,wartman4404/servo,hyowon/servo,indykish/servo,pyfisch/servo,szeged/servo,pyfisch/servo,zhangjunlei26/servo,vks/servo,g-k/servo,paulrouget/servo,aidanhs/servo,emilio/servo,anthgur/servo,thiagopnts/servo,dagnir/servo,tempbottle/servo,meh/servo,thiagopnts/servo,RenaudParis/servo,peterjoel/servo,notriddle/servo,pyfisch/servo,WriterOfAlicrow/servo,dsandeephegde/servo,codemac/servo,mt2d2/servo,wpgallih/servo,GyrosOfWar/servo,pyecs/servo,evilpie/servo,rixrix/servo,pyfisch/servo,nick-thompson/servo,peterjoel/servo,larsbergstrom/servo,avadacatavra/servo,jimberlage/servo,dati91/servo,youprofit/servo,saratang/servo,WriterOfAlicrow/servo,larsbergstrom/servo,vks/servo,zhangjunlei26/servo,zhangjunlei26/servo,larsbergstrom/servo,notriddle/servo,saneyuki/servo,dagnir/servo,GreenRecycleBin/servo,eddyb/servo,szeged/servo,nrc/servo,CJ8664/servo,sadmansk/servo,echochamber/servo,kindersung/servo,avadacatavra/servo,jimberlage/servo,aweinstock314/servo,zentner-kyle/servo,dagnir/servo,larsbergstrom/servo,dvberkel/servo,AnthonyBroadCrawford/servo,evilpie/servo,codemac/servo,GreenRecycleBin/servo,dati91/servo,j3parker/servo,mt2d2/servo,eddyb/servo,mbrubeck/servo,g-k/servo,tafia/servo,dhananjay92/servo,notriddle/servo,walac/servo,wartman4404/servo,thiagopnts/servo,nerith/servo,avadacatavra/servo,jgraham/servo,tschneidereit/servo,notriddle/servo,steveklabnik/servo,deokjinkim/servo,GreenRecycleBin/servo,walac/servo,jdramani/servo,aidanhs/servo,peterjoel/servo,youprofit/servo,runarberg/servo,mattnenterprise/servo,jdramani/servo,avadacatavra/servo,indykish/servo,nrc/servo,nnethercote/servo,zhangjunlei26/servo,ryancanhelpyou/servo,nrc/servo,akosel/servo,sadmansk/servo,peterjoel/servo,caldwell/servo,GreenRecycleBin/servo,tschneidereit/servo,DominoTree/servo,rixrix/servo,dvberkel/servo,kindersung/servo,szeged/servo,SimonSapin/servo,samfoo/servo,CJ8664/servo,WriterOfAlicrow/servo,splav/servo,youprofit/servo,indykish/servo,meh/servo,nrc/servo,bjwbell/servo,caldwell/servo,samfoo/servo,aweinstock314/servo,thiagopnts/servo,kindersung/servo,jlegendary/servo,upsuper/servo,samfoo/servo,upsuper/servo,pyecs/servo,aweinstock314/servo,wartman4404/servo,CJ8664/servo,youprofit/servo,WriterOfAlicrow/servo,ryancanhelpyou/servo,mbrubeck/servo,dagnir/servo,nnethercote/servo,thiagopnts/servo