xdisplaycheck was used in xvfb.py to ensure the virtual X server was properly initialized before running any tests. However, xvfb is bundled with a utility called xvfb-run which achieves the same end. xdisplaycheck is therefore no longer needed.
You started fixing this bug over two years ago. Are you still working on it? You can update the status to "archived", "wontfix", or "closed". You can remove yourself as owner and change status to "untriaged", but if this is still a real bug, please do not sit on it.
Comment 1 by bugdroid1@chromium.org
, Dec 2 2016