GitLab

To prevent JS console errors, ensure that all CDDs obtained from
extension and privet printers are sane. Do not need to check CDDs from
local printers, since they are generated by
SemanticCapsAndDefaultsToCdd.

Bug: None
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Idbbd9470cd966a47bb4b16472f05f30fe4990c4c
Reviewed-on: https://chromium-review.googlesource.com/679283
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510151}