Focus bottom toolbar after top in talkback

This patch conditionally adds the bottom toolbar as the next focus
target after the top toolbar when Duet is enabled.

Bug: 878546
Change-Id: If9281c8354d340fd5df96fb3aa5c9200b4783a58
Reviewed-on: https://chromium-review.googlesource.com/1204712
Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588649}
1 file changed