Adding git checkout type.
Adding git checkout type.

R=iannucci@chromium.org,mmoss@chromium.org


Review URL: https://chromiumcodereview.appspot.com/13008029

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@189971 0039d316-1c4b-4281-b951-d872f2087c98

shishkander/recipes-py,luci/recipes-py,luci/recipes-py,shishkander/recipes-py