This is largely a bugfix release, so should be much easier to transition.

BUG=chromium:431514
TEST=ran on some code bases and checked output

Review URL: https://codereview.chromium.org/753543006

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@293355 0039d316-1c4b-4281-b951-d872f2087c98