eclass-overlay: Add cups-proxy user and group.

Set up user and group for running the CUPS Proxy Daemon in minijail.

BUG=chromium:945409
TEST=profiles/base/accounts/display-accts.py

Change-Id: I1afd926fd6d3585438e79617031fbde5226b05d8
Reviewed-on: https://chromium-review.googlesource.com/1571285
Commit-Ready: Pi-Hsun Shih <pihsun@chromium.org>
Tested-by: Pi-Hsun Shih <pihsun@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
2 files changed
tree: 2322917ae9e3bea199167f5f9c09eabd43366b48
  1. PRESUBMIT.cfg
  2. eclass/
  3. metadata/
  4. profiles/