Insert a line break before the code wrappers. (#17062)
Insert a line break before the code wrappers. (#17062)

This will make adding stuff to the first line in postprocessing invariant to sourcemaps.

Part of #17061
honeybadgerdontcare/amphtml,ampproject/amphtml,taboola/amphtml,cvializ/amphtml,kamtschatka/amphtml,aghassemi/amphtml,tlong2/amphtml,yandex-pcode/amphtml,jpettitt/amphtml,lannka/amphtml,Gregable/amphtml,widespace-os/amphtml,lannka/amphtml,ampproject/amphtml,chaveznvg/amphtml,yandex-pcode/amphtml,aghassemi/amphtml,techhtml/amphtml,src-code/amphtml,src-code/amphtml,pedjoni8/amphtml,prateekbh/amphtml,kamtschatka/amphtml,pedjoni8/amphtml,yieldbot/amphtml,tlong2/amphtml,ampproject/amphtml,danielrozenberg/amphtml,alanorozco/amphtml,jpettitt/amphtml,adup-tech/amphtml,nexxtv/amphtml,mhc-gh/amphtml,adup-tech/amphtml,taboola/amphtml,tlong2/amphtml,cvializ/amphtml,jpettitt/amphtml,rsimha-amp/amphtml,techhtml/amphtml,laterpay/amphtml,dotandads/amphtml,media-net/amphtml,adup-tech/amphtml,widespace-os/amphtml,techhtml/amphtml,ampproject/amphtml,techhtml/amphtml,laterpay/amphtml,erwinmombay/amphtml,jpettitt/amphtml,sebastianbenz/amphtml,BenDz/amphtml,zhouyx/amphtml,rsimha-amp/amphtml,prateekbh/amphtml,src-code/amphtml,dotandads/amphtml,laterpay/amphtml,Gregable/amphtml,mhc-gh/amphtml,jpettitt/amphtml,techhtml/amphtml,sharethrough/amphtml,chaveznvg/amphtml,media-net/amphtml,nexxtv/amphtml,smartadserver/amphtml,BenDz/amphtml,ampproject/amphtml,danielrozenberg/amphtml,pedjoni8/amphtml,prateekbh/amphtml,yandex-pcode/amphtml,widespace-os/amphtml,honeybadgerdontcare/amphtml,smartadserver/amphtml,src-code/amphtml,Gregable/amphtml,Gregable/amphtml,Gregable/amphtml,media-net/amphtml,prateekbh/amphtml,cvializ/amphtml,yieldbot/amphtml,src-code/amphtml,smartadserver/amphtml,lannka/amphtml,src-code/amphtml,yieldbot/amphtml,danielrozenberg/amphtml,yieldbot/amphtml,aghassemi/amphtml,yandex-pcode/amphtml,BenDz/amphtml,dotandads/amphtml,dotandads/amphtml,media-net/amphtml,nexxtv/amphtml,zhangsu/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,prateekbh/amphtml,BenDz/amphtml,zhouyx/amphtml,laterpay/amphtml,aghassemi/amphtml,alanorozco/amphtml,ampproject/amphtml,jmadler/amphtml,sebastianbenz/amphtml,erwinmombay/amphtml,jridgewell/amphtml,jridgewell/amphtml,laterpay/amphtml,koshka/amphtml,Gregable/amphtml,sebastianbenz/amphtml,media-net/amphtml,mhc-gh/amphtml,cory-work/amphtml,erwinmombay/amphtml,lannka/amphtml,sebastianbenz/amphtml,cory-work/amphtml,jridgewell/amphtml,lannka/amphtml,voyagegroup/amphtml,jridgewell/amphtml,chaveznvg/amphtml,mhc-gh/amphtml,media-net/amphtml,dotandads/amphtml,aghassemi/amphtml,chaveznvg/amphtml,erwinmombay/amphtml,adup-tech/amphtml,kamtschatka/amphtml,cory-work/amphtml,honeybadgerdontcare/amphtml,prateekbh/amphtml,danielrozenberg/amphtml,zhouyx/amphtml,cvializ/amphtml,voyagegroup/amphtml,jmadler/amphtml,cory-work/amphtml,kamtschatka/amphtml,chaveznvg/amphtml,zhangsu/amphtml,nexxtv/amphtml,cory-work/amphtml,rsimha-amp/amphtml,rsimha-amp/amphtml,honeybadgerdontcare/amphtml,aghassemi/amphtml,smartadserver/amphtml,koshka/amphtml,zhangsu/amphtml,lannka/amphtml,mhc-gh/amphtml,alanorozco/amphtml,sharethrough/amphtml,kamtschatka/amphtml,rsimha-amp/amphtml,cvializ/amphtml,jpettitt/amphtml,koshka/amphtml,danielrozenberg/amphtml,cvializ/amphtml,jmadler/amphtml,jridgewell/amphtml,pedjoni8/amphtml,yandex-pcode/amphtml,zhouyx/amphtml,smartadserver/amphtml,chaveznvg/amphtml,smartadserver/amphtml,pedjoni8/amphtml,alanorozco/amphtml,erwinmombay/amphtml,lannka/amphtml,taboola/amphtml,koshka/amphtml,honeybadgerdontcare/amphtml,adup-tech/amphtml,erwinmombay/amphtml,zhangsu/amphtml,sharethrough/amphtml,dotandads/amphtml,media-net/amphtml,alanorozco/amphtml,yieldbot/amphtml,media-net/amphtml,voyagegroup/amphtml,pedjoni8/amphtml,voyagegroup/amphtml,koshka/amphtml,kamtschatka/amphtml,zhangsu/amphtml,widespace-os/amphtml,prateekbh/amphtml,voyagegroup/amphtml,jmadler/amphtml,ampproject/amphtml,jmadler/amphtml,voyagegroup/amphtml,honeybadgerdontcare/amphtml,rsimha-amp/amphtml,zhangsu/amphtml,widespace-os/amphtml,alanorozco/amphtml,tlong2/amphtml,taboola/amphtml,BenDz/amphtml,mhc-gh/amphtml,cory-work/amphtml,sebastianbenz/amphtml,danielrozenberg/amphtml,jpettitt/amphtml,zhouyx/amphtml,voyagegroup/amphtml,tlong2/amphtml,jmadler/amphtml,tlong2/amphtml,jpettitt/amphtml,sebastianbenz/amphtml,honeybadgerdontcare/amphtml,nexxtv/amphtml,mhc-gh/amphtml,nexxtv/amphtml,yandex-pcode/amphtml,taboola/amphtml,jridgewell/amphtml,sharethrough/amphtml,ampproject/amphtml,alanorozco/amphtml,danielrozenberg/amphtml,nexxtv/amphtml,sharethrough/amphtml,Gregable/amphtml,zhouyx/amphtml,BenDz/amphtml,alanorozco/amphtml,taboola/amphtml,techhtml/amphtml,yieldbot/amphtml,widespace-os/amphtml,Gregable/amphtml,laterpay/amphtml,cory-work/amphtml,adup-tech/amphtml,jridgewell/amphtml,mhc-gh/amphtml,rsimha-amp/amphtml,koshka/amphtml,taboola/amphtml,zhouyx/amphtml,sharethrough/amphtml