jasmineTestRunner: eliminate the use of for..in on arrays
jasmineTestRunner: eliminate the use of for..in on arrays

We shouldn't be iterating over arrays with for..in. This cleans it up
and ensures that we're treating arrays like arrays. It has the side
effect, for Facebook, of allowing us to use our own Arrray.prototype.es6
polyfill without warnings.

blainekasten/jest,facebook/jest,cpojer/jest,securingsincity/jest-browser-support,securingsincity/jest-browser-support,xeneta/jest,ide/jest,alvinsj/jest,blainekasten/jest,gagoman/jest,AyseAkr/jest,skovhus/jest,skawian/jest,yungsters/jest,jsdf/jest,yungsters/jest,rpowis/jest,ncuillery/jest,AyseAkr/jest,aduyng/jest,siddhartharay007/jest,aaron-goshine/jest,wmyers/jest,ChiMarvine/jest,cpojer/jest,BenoitZugmeyer/jest,StatusPage/jest,Daniel15/jest,skawian/jest,ide/jest,ide/jest,machadoum/jest,cpojer/jest,skovhus/jest,bauerca/jest,facebook/jest,razh/jest,silentroach/jest,silentroach/jest,bookman25/jest,carmenlau/jest,razh/jest,ncuillery/jest,mpontus/jest,bluebridgedigital/jest,wmyers/jest,sampepose/jest,aaron-goshine/jest,skovhus/jest,Daniel15/jest,sampepose/jest,rpowis/jest,dylanham/jest,machadoum/jest,alvinsj/jest,xeneta/jest,aaron-goshine/jest,jsdf/jest,bookman25/jest,mpontus/jest,securingsincity/jest-browser-support,ChiMarvine/jest,lokinell/jest,blainekasten/jest,mpontus/jest,gagoman/jest,createbang/jest,createbang/jest,StatusPage/jest,carmenlau/jest,BenoitZugmeyer/jest,dylanham/jest,Daniel15/jest,bluebridgedigital/jest,bookman25/jest,lokinell/jest,bauerca/jest,siddhartharay007/jest,IveWong/jest,aduyng/jest,IveWong/jest,facebook/jest