This was broken in r299682 (adding setup_color). git_hyper_blame now
initializes setup_color.

BUG=607771

Review-Url: https://codereview.chromium.org/1930813003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300316 0039d316-1c4b-4281-b951-d872f2087c98