codereview: handle 'null as missing field' in rietveld json
codereview: handle 'null as missing field' in rietveld json

R=golang-dev, r
CC=golang-dev
http://codereview.appspot.com/4543046
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go