GitLab

changes:
Follow up with crrev.com/c/1007891, |braille_display_connected_| is no
longer needed by TrayAccessibility. We don't need it for tray
visibility either, since when connected it always guaranteed that spoken
feedback is enabled, so that spoken feedback enabled state could reflect
on behalf of braille display connected state.

Bug: 800270
Test: covered by tests
Change-Id: I33f0d7b9d53a41e7ff1ed5160207b9d5fb603188
Reviewed-on: https://chromium-review.googlesource.com/1014746
Commit-Queue: Qiang Xu <warx@google.com>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551398}