syncincdec-830184: Use type functions directly to avoid async parse
syncincdec-830184: Use type functions directly to avoid async parse

UnassignedAssignment used to have a util.synchronize because it knew
that parse happened synchronously. But using the type functions directly
allows us to get rid of that.

Signed-off-by: Joe Walker <7a17872fbb32c7d760c9a16ee3076daead11efcf@mozilla.com>

joewalker/gcli,mozilla/gcli,mozilla/gcli,mozilla/gcli,joewalker/gcli