This is an emergency patch to avoid picking up the
upcoming 2.9-rc0 version of gerrit, which requires java 7
and will break the chromeos bots.

BUG=346369
R=davidjames@chromium.org

Review URL: https://codereview.chromium.org/196063003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@256378 0039d316-1c4b-4281-b951-d872f2087c98