auto merge of #2469 : Manishearth/servo/xhrwarnings, r=pcwalton
auto merge of #2469 : Manishearth/servo/xhrwarnings, r=pcwalton


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pyfisch/servo,tafia/servo,srbhklkrn/SERVOENGINE,s142857/servo,fiji-flo/servo,canaltinova/servo,mt2d2/servo,upsuper/servo,GreenRecycleBin/servo,paulrouget/servo,GreenRecycleBin/servo,boghison/servo,dhananjay92/servo,nrc/servo,zhangjunlei26/servo,DominoTree/servo,snf/servo,juzer10/servo,AnthonyBroadCrawford/servo,deokjinkim/servo,cbrewster/servo,eddyb/servo,zentner-kyle/servo,karlito40/servo,mdibaiee/servo,hyowon/servo,RenaudParis/servo,vks/servo,pyecs/servo,vks/servo,dhananjay92/servo,wpgallih/servo,jimberlage/servo,g-k/servo,notriddle/servo,pgonda/servo,aweinstock314/servo,indykish/servo,AnthonyBroadCrawford/servo,tschneidereit/servo,karlito40/servo,sadmansk/servo,upsuper/servo,s142857/servo,mukilan/servo,tempbottle/servo,karlito40/servo,CJ8664/servo,mt2d2/servo,mattnenterprise/servo,emilio/servo,peterjoel/servo,srbhklkrn/SERVOENGINE,Shraddha512/servo,bjwbell/servo,boghison/servo,SimonSapin/servo,shrenikgala/servo,walac/servo,jlegendary/servo,jimberlage/servo,upsuper/servo,dvberkel/servo,peterjoel/servo,caldwell/servo,notriddle/servo,RenaudParis/servo,nrc/servo,bjwbell/servo,splav/servo,jlegendary/servo,caldwell/servo,evilpie/servo,mdibaiee/servo,j3parker/servo,youprofit/servo,huonw/servo,indykish/servo,steveklabnik/servo,rixrix/servo,emilio/servo,dati91/servo,nnethercote/servo,saneyuki/servo,RenaudParis/servo,juzer10/servo,hyowon/servo,g-k/servo,avadacatavra/servo,kindersung/servo,luniv/servo,akosel/servo,wartman4404/servo,aidanhs/servo,tempbottle/servo,fiji-flo/servo,mukilan/servo,boghison/servo,michaelwu/servo,aidanhs/servo,zhangjunlei26/servo,fiji-flo/servo,paulrouget/servo,RenaudParis/servo,samfoo/servo,saratang/servo,canaltinova/servo,juzer10/servo,samfoo/servo,runarberg/servo,A-deLuna/servo,meh/servo,szeged/servo,snf/servo,mdibaiee/servo,rnestler/servo,WriterOfAlicrow/servo,sadmansk/servo,samfoo/servo,evilpie/servo,brendandahl/servo,canaltinova/servo,dati91/servo,avadacatavra/servo,zentner-kyle/servo,RenaudParis/servo,upsuper/servo,dvberkel/servo,paulrouget/servo,Shraddha512/servo,dhananjay92/servo,emilio/servo,meh/servo,wpgallih/servo,wpgallih/servo,dsandeephegde/servo,tafia/servo,froydnj/servo,fiji-flo/servo,CJ8664/servo,CJ8664/servo,nerith/servo,GyrosOfWar/servo