Then this was changed to CheckCallAndFilter it broke
the expectations of code in the buildbot tree:
 scripts/slave/chromium_commands.py:extract_revisions

Alternatively we could update the expectations
of chromium_commands.py.

BUG= https://code.google.com/p/chromium/issues/detail?id=412818

Review URL: https://codereview.chromium.org/587253005

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@292072 0039d316-1c4b-4281-b951-d872f2087c98