Office for Mac 2008 just asked me whether I wanted to update. However, on continuing with the update, a Window popped up saying that I needed to close Chrome before the update could continue. I find this rather suspicious, since Office should not need to go anywhere near Chrome.

Any idea why there might be a legitimate reason for this, or alternatively, just what is Microsoft trying to sneak on to my computer?

EDIT: I did look at the download details on Microsoft's website, but aside from the general guff about closing all open applications, it doesn't mention anything about Chrome or any browser plugins.