BUG=591814
TEST=gclient sync prints the correct report locally
when config is wrong.

Review-Url: https://codereview.chromium.org/2018803002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300671 0039d316-1c4b-4281-b951-d872f2087c98