Bug 1102556: update .background-size mixin to accept multiple arguments
Bug 1102556: update .background-size mixin to accept multiple arguments

mahinthjoe/bedrock,dudepare/bedrock,jpetto/bedrock,gauthierm/bedrock,schalkneethling/bedrock,rishiloyola/bedrock,TheoChevalier/bedrock,amjadm61/bedrock,ckprice/bedrock,flodolo/bedrock,MichaelKohler/bedrock,petabyte/bedrock,yglazko/bedrock,yglazko/bedrock,gerv/bedrock,analytics-pros/mozilla-bedrock,jacshfr/mozilla-bedrock,gauthierm/bedrock,Jobava/bedrock,mermi/bedrock,petabyte/bedrock,bensternthal/bedrock,glogiotatidis/bedrock,craigcook/bedrock,Jobava/bedrock,flodolo/bedrock,mermi/bedrock,pascalchevrel/bedrock,mkmelin/bedrock,sylvestre/bedrock,analytics-pros/mozilla-bedrock,MichaelKohler/bedrock,sylvestre/bedrock,MichaelKohler/bedrock,l-hedgehog/bedrock,davehunt/bedrock,dudepare/bedrock,SujaySKumar/bedrock,amjadm61/bedrock,flodolo/bedrock,l-hedgehog/bedrock,chirilo/bedrock,jacshfr/mozilla-bedrock,TheoChevalier/bedrock,mahinthjoe/bedrock,mozilla/bedrock,ckprice/bedrock,CSCI-462-01-2017/bedrock,malena/bedrock,glogiotatidis/bedrock,schalkneethling/bedrock,Jobava/bedrock,CSCI-462-01-2017/bedrock,hoosteeno/bedrock,jacshfr/mozilla-bedrock,TheJJ100100/bedrock,pascalchevrel/bedrock,ckprice/bedrock,bensternthal/bedrock,Sancus/bedrock,ckprice/bedrock,jpetto/bedrock,l-hedgehog/bedrock,kyoshino/bedrock,jgmize/bedrock,hoosteeno/bedrock,mahinthjoe/bedrock,pascalchevrel/bedrock,gauthierm/bedrock,SujaySKumar/bedrock,jacshfr/mozilla-bedrock,malena/bedrock,jgmize/bedrock,SujaySKumar/bedrock,Sancus/bedrock,hoosteeno/bedrock,MichaelKohler/bedrock,TheJJ100100/bedrock,chirilo/bedrock,chirilo/bedrock,jpetto/bedrock,ericawright/bedrock,mermi/bedrock,hoosteeno/bedrock,gerv/bedrock,petabyte/bedrock,ericawright/bedrock,rishiloyola/bedrock,sgarrity/bedrock,gauthierm/bedrock,SujaySKumar/bedrock,jgmize/bedrock,andreadelrio/bedrock,jgmize/bedrock,davehunt/bedrock,alexgibson/bedrock,craigcook/bedrock,andreadelrio/bedrock,TheJJ100100/bedrock,schalkneethling/bedrock,dudepare/bedrock,CSCI-462-01-2017/bedrock,rishiloyola/bedrock,mkmelin/bedrock,sgarrity/bedrock,yglazko/bedrock,petabyte/bedrock,andreadelrio/bedrock,jpetto/bedrock,marcoscaceres/bedrock,pmclanahan/bedrock,glogiotatidis/bedrock,malena/bedrock,mozilla/bedrock,marcoscaceres/bedrock,kyoshino/bedrock,glogiotatidis/bedrock,pmclanahan/bedrock,alexgibson/bedrock,gerv/bedrock,alexgibson/bedrock,bensternthal/bedrock,chirilo/bedrock,amjadm61/bedrock,dudepare/bedrock,jacshfr/mozilla-bedrock,pascalchevrel/bedrock,TheoChevalier/bedrock,Sancus/bedrock,flodolo/bedrock,andreadelrio/bedrock,pmclanahan/bedrock,Sancus/bedrock,sgarrity/bedrock,mkmelin/bedrock,amjadm61/bedrock,kyoshino/bedrock,sgarrity/bedrock,kyoshino/bedrock,mozilla/bedrock,mahinthjoe/bedrock,CSCI-462-01-2017/bedrock,marcoscaceres/bedrock,pmclanahan/bedrock,davehunt/bedrock,marcoscaceres/bedrock,ericawright/bedrock,sylvestre/bedrock,sylvestre/bedrock,Jobava/bedrock,mermi/bedrock,ericawright/bedrock,mkmelin/bedrock,gerv/bedrock,TheoChevalier/bedrock,bensternthal/bedrock,l-hedgehog/bedrock,alexgibson/bedrock,davehunt/bedrock,TheJJ100100/bedrock,schalkneethling/bedrock,rishiloyola/bedrock,craigcook/bedrock,analytics-pros/mozilla-bedrock,mozilla/bedrock,yglazko/bedrock,amjadm61/bedrock,craigcook/bedrock,analytics-pros/mozilla-bedrock,malena/bedrock