We should shut down the chromium.chrome waterfall; it's mostly redundant with official.desktop.continuous, and we shouldn't be doing public builds with chrome_branded=true and src-internal checked out.

Rather than migrate it to LUCI, we should just shut it down :).

One catch, however, is that we should make sure we don't lose the sheriff coverage of this configuration. This means we should fix bug 632162 and make sure at least official.chromium.continuous failures on trunk show up in sheriff-o-matic.