Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  12e996772da290dd45d744cbc2f3163dc3e068e8

QA: Workaround for cookie domain bug in chrome webdriver

Added a domain to the add_cookie call used by the "using the mobile
site" step to avoid a bug where chrome complains of "optional 'domain'
invalid" despite it being optional.

Change-Id: I7134bbf3031a348e261a73fa354cd8e19ae11b85