Apply Mac chooser takeaways to Linux chooser.

The code review for the Mac chooser led to some changes that are also
applicable to the Linux chooser.

Bug: 679313
Change-Id: I301f9c08aa6afcbf356023b9c0eaea39e171b435
Reviewed-on: https://chromium-review.googlesource.com/c/1457480
Reviewed-by: Joe Downing <joedow@chromium.org>
Commit-Queue: Erik Jensen <rkjnsn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630478}
1 file changed