While I've been sad to see a lot of Google projects come to and end I think this one is justifiable. I don't know of any active projects still hosted there.
I think my only serious concern is that even this year, I've downloaded several projects off Google Code. I am worried that a lot will be lost if they are not archived somewhere.
Here are a few: vim, waf, ttrss-reader-fork, gperftools, include-what-you-use, googletest and googlemock. All have had commits in the last few weeks, some in the last day or two.