message: Update minor version to 22.
  REF_BUG=35909839
  REF_CL=164478738
  REF_TIME=2017-08-08T02:42:32+09:00
  REF_TIME_RAW=1502127752 +0900
diff: # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  MAJOR=2
  -MINOR=21
  -BUILD=2727
  +MINOR=22
  +BUILD=2728
  REVISION=102
  # This version represents the version of Mozc IME engine (converter, predictor,
  # etc.). This version info is included both in the Mozc server and in the Mozc
  