GitLab

* fixes .role = ...; vs setAttribute(role, ...) booboo
* makes #realbox politely live so that up/down utter something

R=dpapad@chromium.org

Bug: 1017915
Fixed: 1017877
Change-Id: I9ed26ebe0ff3fe9cfa71ee4a9d2f73e80c28e101
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1885631
Auto-Submit: Dan Beam <dbeam@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Dan Beam <dbeam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710200}