Print Preview: Do not disable for cloud printer fetch failure

It does not make sense to disable the entire preview for a printer
fetch failure. Update the cloud print state if there is a 403 error,
and otherwise ignore these failures in app.js and let DestinationStore
handle them.

Bug: 923914
Change-Id: Ie0dc8596c30397ad531354a4a80345a4299c64f8
Reviewed-on: https://chromium-review.googlesource.com/c/1428059
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625412}
5 files changed