The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/abc117d2324c0ed31e0d7e4cc875dd3983e049be

commit abc117d2324c0ed31e0d7e4cc875dd3983e049be
Author: Xiaochu Liu <xiaochu@chromium.org>
Date: Tue Jan 30 22:54:21 2018

net-print/cups: move components to search into a table

This simplifies the patching process for more filter components in the
future. The only thing to do (presumably) is add 2 additional lines for
filter name and its path.

BUG= chromium:752684 
TEST=cupstestppd <a escpr ppd>, printing over escpr component is
successful.

Change-Id: Iee1af0eede80aa0be028cb48dcce3e7a58fadc7c
Reviewed-on: https://chromium-review.googlesource.com/890171
Commit-Ready: Xiaochu Liu <xiaochu@chromium.org>
Tested-by: Xiaochu Liu <xiaochu@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>

[modify] https://crrev.com/abc117d2324c0ed31e0d7e4cc875dd3983e049be/net-print/cups/files/cups-2.1.4-search-filter.patch
[rename] https://crrev.com/abc117d2324c0ed31e0d7e4cc875dd3983e049be/net-print/cups/cups-2.1.4-r34.ebuild