Google officially renamed "Google Webmaster Tools" to "Google Search Console" and the tag issue came up when we discussed this in chat:
w3d So, errrm, who's going to retag the 1000+ questions tagged google-webmaster-tools?!
dan @w3d Good point. We should probably create another tag with that name and make it a synonym of google-webmaster-tools, and edit the description to mention the renaming, and then merge the two tags later on as people stop referring to it as Google Webmaster Tools.