Imported from github/tvlfyi/gerrit-queue, originally from
github/tweag/gerrit-queue but that upstream is unmaintained.
git-subtree-dir: third_party/gerrit-queue
git-subtree-mainline: ff10b7ab83
git-subtree-split: 24f5a642af
Change-Id: I307cc38185ab9e25eb102c95096298a150ae13a2