GitLab

Autogenerate the resources_private.js externs file, and update
pdf_viewer.js to use an enum from the new autogenerated file.

Bug: 721073
Change-Id: I177d3b229f27555bf811abc7087321606f412fdd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1811499
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699974}