GitLab

Only show Live Caption toggle in volume slider in bubble, not in
status tray. Also, enable this behavior for the ChromeOS system-
wide launch.

Bug: 1055150
Change-Id: Ibdcee58a86355890154fd35d700862d379830033
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2619944
Commit-Queue: Abigail Klein <abigailbklein@google.com>
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842701}