Merge branch 'merge-cros-disks-rewrite' into merge-cros-disks

BUG=chromium:370271

Change-Id: Ib35f95c1c505c069d5f4b1d613f7a9a9f3f50805
tree: 50136329ead3f18165ec39b29ec974fe2d633f3a
  1. buffet/