Makes iframe transport work with SERP (#11988)
Makes iframe transport work with SERP (#11988)

* Accomodates SERP iframe arrangement

* Uses getTopWindow

* Typo

cory-work/amphtml,powdercloud/amphtml,camelburrito/amphtml,engtat/amphtml,sebastianbenz/amphtml,pedjoni8/amphtml,jridgewell/amphtml,media-net/amphtml,kixer-com/amphtml,widespace-os/amphtml,voyagegroup/amphtml,yandex-pcode/amphtml,gumgum/amphtml,engtat/amphtml,tlong2/amphtml,zhouyx/amphtml,alanorozco/amphtml,ampproject/amphtml,zhouyx/amphtml,techhtml/amphtml,gumgum/amphtml,techhtml/amphtml,zhangsu/amphtml,zhangsu/amphtml,lannka/amphtml,camelburrito/amphtml,cvializ/amphtml,engtat/amphtml,prateekbh/amphtml,bpaduch/amphtml,clawr/amphtml,yandex-pcode/amphtml,honeybadgerdontcare/amphtml,kixer-com/amphtml,pedjoni8/amphtml,yieldbot/amphtml,jpettitt/amphtml,rsimha-amp/amphtml,laterpay/amphtml,jpettitt/amphtml,ADITION/amphtml,camelburrito/amphtml,chaveznvg/amphtml,mhc-gh/amphtml,erwinmombay/amphtml,smartadserver/amphtml,dotandads/amphtml,sebastianbenz/amphtml,media-net/amphtml,mhc-gh/amphtml,BenDz/amphtml,comScore/amphtml,jridgewell/amphtml,techhtml/amphtml,cvializ/amphtml,yandex-pcode/amphtml,comScore/amphtml,cvializ/amphtml,clawr/amphtml,taboola/amphtml,sriramkrish85/amphtml,sharethrough/amphtml,adup-tech/amphtml,laterpay/amphtml,chaveznvg/amphtml,yieldbot/amphtml,media-net/amphtml,powdercloud/amphtml,ampproject/amphtml,Gregable/amphtml,aghassemi/amphtml,lannka/amphtml,jmadler/amphtml,adup-tech/amphtml,ampproject/amphtml,danielrozenberg/amphtml,tlong2/amphtml,shawnbuso/amphtml,koshka/amphtml,zhangsu/amphtml,koshka/amphtml,taboola/amphtml,src-code/amphtml,prateekbh/amphtml,cvializ/amphtml,mhc-gh/amphtml,yieldmo/amphtml,comScore/amphtml,src-code/amphtml,rsimha-amp/amphtml,kixer-com/amphtml,media-net/amphtml,prateekbh/amphtml,zhangsu/amphtml,honeybadgerdontcare/amphtml,mhc-gh/amphtml,rsimha-amp/amphtml,danielrozenberg/amphtml,BenDz/amphtml,koshka/amphtml,smartadserver/amphtml,shawnbuso/amphtml,jmadler/amphtml,mhc-gh/amphtml,dotandads/amphtml,shawnbuso/amphtml,donttrustthisbot/amphtml,dotandads/amphtml,voyagegroup/amphtml,honeybadgerdontcare/amphtml,lannka/amphtml,kixer-com/amphtml,media-net/amphtml,camelburrito/amphtml,Gregable/amphtml,honeybadgerdontcare/amphtml,zhouyx/amphtml,ADITION/amphtml,yieldmo/amphtml,donttrustthisbot/amphtml,src-code/amphtml,danielrozenberg/amphtml,bpaduch/amphtml,rajkumarsrk/amphtml,danielrozenberg/amphtml,kamtschatka/amphtml,alanorozco/amphtml,nexxtv/amphtml,mhc-gh/amphtml,yieldbot/amphtml,sriramkrish85/amphtml,ampproject/amphtml,danielrozenberg/amphtml,smartadserver/amphtml,taboola/amphtml,shawnbuso/amphtml,laterpay/amphtml,jpettitt/amphtml,techhtml/amphtml,widespace-os/amphtml,danielrozenberg/amphtml,kamtschatka/amphtml,dotandads/amphtml,yieldbot/amphtml,erwinmombay/amphtml,cory-work/amphtml,src-code/amphtml,yieldmo/amphtml,koshka/amphtml,src-code/amphtml,bpaduch/amphtml,gumgum/amphtml,rsimha-amp/amphtml,luciancrasovan/amphtml,sharethrough/amphtml,adup-tech/amphtml,gumgum/amphtml,jpettitt/amphtml,sharethrough/amphtml,kamtschatka/amphtml,erwinmombay/amphtml,kamtschatka/amphtml,rajkumarsrk/amphtml,jmadler/amphtml,laterpay/amphtml,tlong2/amphtml,yieldmo/amphtml,clawr/amphtml,zhangsu/amphtml,yandex-pcode/amphtml,media-net/amphtml,donttrustthisbot/amphtml,chaveznvg/amphtml,aghassemi/amphtml,cory-work/amphtml,Gregable/amphtml,BenDz/amphtml,rajkumarsrk/amphtml,ADITION/amphtml,cory-work/amphtml,mhc-gh/amphtml,voyagegroup/amphtml,kixer-com/amphtml,prateekbh/amphtml,techhtml/amphtml,engtat/amphtml,bpaduch/amphtml,donttrustthisbot/amphtml,comScore/amphtml,chaveznvg/amphtml,kamtschatka/amphtml,sharethrough/amphtml,luciancrasovan/amphtml,kamtschatka/amphtml,nexxtv/amphtml,lannka/amphtml,honeybadgerdontcare/amphtml,widespace-os/amphtml,aghassemi/amphtml,voyagegroup/amphtml,rajkumarsrk/amphtml,zhouyx/amphtml,pedjoni8/amphtml,Gregable/amphtml,honeybadgerdontcare/amphtml,jridgewell/amphtml,jridgewell/amphtml,mhc-gh/amphtml,engtat/amphtml,zhouyx/amphtml,adup-tech/amphtml,sebastianbenz/amphtml,taboola/amphtml,jmadler/amphtml,yieldbot/amphtml,dotandads/amphtml,kixer-com/amphtml,widespace-os/amphtml,smartadserver/amphtml,jridgewell/amphtml,jridgewell/amphtml,media-net/amphtml,Gregable/amphtml,voyagegroup/amphtml,tlong2/amphtml,zhouyx/amphtml,pedjoni8/amphtml,nexxtv/amphtml,rajkumarsrk/amphtml,aghassemi/amphtml,engtat/amphtml,BenDz/amphtml,gumgum/amphtml,techhtml/amphtml,rsimha-amp/amphtml,ADITION/amphtml,nexxtv/amphtml,camelburrito/amphtml,shawnbuso/amphtml,jpettitt/amphtml,bpaduch/amphtml,sriramkrish85/amphtml,smartadserver/amphtml,Gregable/amphtml,comScore/amphtml,alanorozco/amphtml,yieldmo/amphtml,chaveznvg/amphtml,alanorozco/amphtml,erwinmombay/amphtml,cvializ/amphtml,nexxtv/amphtml,clawr/amphtml,ADITION/amphtml,bpaduch/amphtml,comScore/amphtml,widespace-os/amphtml,camelburrito/amphtml,smartadserver/amphtml,luciancrasovan/amphtml,dotandads/amphtml,laterpay/amphtml,aghassemi/amphtml,taboola/amphtml,laterpay/amphtml,alanorozco/amphtml,tlong2/amphtml,lannka/amphtml,clawr/amphtml,erwinmombay/amphtml,cory-work/amphtml,sriramkrish85/amphtml,jmadler/amphtml,danielrozenberg/amphtml,camelburrito/amphtml,bpaduch/amphtml,clawr/amphtml,yieldmo/amphtml,gumgum/amphtml,Gregable/amphtml,nexxtv/amphtml,sebastianbenz/amphtml,shawnbuso/amphtml,jpettitt/amphtml,taboola/amphtml,luciancrasovan/amphtml,donttrustthisbot/amphtml,BenDz/amphtml,koshka/amphtml,erwinmombay/amphtml,engtat/amphtml,jridgewell/amphtml,jpettitt/amphtml,sriramkrish85/amphtml,yieldmo/amphtml,prateekbh/amphtml,lannka/amphtml,powdercloud/amphtml,aghassemi/amphtml,powdercloud/amphtml,luciancrasovan/amphtml,cory-work/amphtml,rajkumarsrk/amphtml,voyagegroup/amphtml,clawr/amphtml,lannka/amphtml,jpettitt/amphtml,zhouyx/amphtml,shawnbuso/amphtml,media-net/amphtml,alanorozco/amphtml,voyagegroup/amphtml,rajkumarsrk/amphtml,chaveznvg/amphtml,widespace-os/amphtml,pedjoni8/amphtml,luciancrasovan/amphtml,kixer-com/amphtml,jmadler/amphtml,pedjoni8/amphtml,adup-tech/amphtml,prateekbh/amphtml,prateekbh/amphtml,sriramkrish85/amphtml,alanorozco/amphtml,luciancrasovan/amphtml,ampproject/amphtml,sebastianbenz/amphtml,BenDz/amphtml,tlong2/amphtml,danielrozenberg/amphtml,donttrustthisbot/amphtml,src-code/amphtml,nexxtv/amphtml,yandex-pcode/amphtml,powdercloud/amphtml,taboola/amphtml,ampproject/amphtml,cory-work/amphtml,ampproject/amphtml,adup-tech/amphtml,sharethrough/amphtml,sebastianbenz/amphtml,yandex-pcode/amphtml,Gregable/amphtml,gumgum/amphtml,rsimha-amp/amphtml,yieldbot/amphtml,donttrustthisbot/amphtml,powdercloud/amphtml,rsimha-amp/amphtml,ampproject/amphtml,alanorozco/amphtml,honeybadgerdontcare/amphtml,powdercloud/amphtml,comScore/amphtml,yandex-pcode/amphtml,koshka/amphtml,sharethrough/amphtml,cvializ/amphtml,zhangsu/amphtml