Ensure there is an active page before updating viewport styles. (#16681)
Ensure there is an active page before updating viewport styles. (#16681)


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