Google typically recruits people from Europe in European offices, and the same goes for offices in Asia, etc. The H-1B process is so painful that they do everything to avoid it, and only resort to it if they cannot find the candidates they are looking for in the US (which happens often on the scale of a company as big as Google).
Some people responded saying that they might still do this to get underpaid employees from abroad... which is just silly. The salaries are exactly the same whatever your country of origin, and companies like Google are not the ones you should attack if you want to make a point about H-1B abuse.