chromeless: factorize hls.*Level API call
chromeless: factorize hls.*Level API call

jlacivita/flashls,codex-corp/flashls,tedconf/flashls,hola/flashls,fixedmachine/flashls,NicolasSiver/flashls,jlacivita/flashls,tedconf/flashls,hola/flashls,vidible/vdb-flashls,neilrackett/flashls,fixedmachine/flashls,clappr/flashls,mangui/flashls,NicolasSiver/flashls,codex-corp/flashls,mangui/flashls,vidible/vdb-flashls,clappr/flashls,neilrackett/flashls