GitLab

Remove use of keyCode in the PDF viewer, except where required for
PDFium.

Bug: 1093648
Change-Id: I4bb507b475f04e58f613337d89aefcf113718c6e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2247212
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: dpapad <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781155}