r123775 contained copy-paste left-over that caused the code to throw a NameError
instead of a HTTPError.

R=petermayo@chromium.org
BUG=
TEST=


Review URL: http://codereview.chromium.org/9536014

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@124184 0039d316-1c4b-4281-b951-d872f2087c98