GitLab

Add thresholds to announce by spoken feedback timeleft and percent
progress only after reaching them.

Bug: 1124252
Change-Id: I0374fdb9e3ffdf9e16d1cbb664cb6025d8208fb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2391151Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Commit-Queue: Roman Aleksandrov <raleksandrov@google.com>
Cr-Commit-Position: refs/heads/master@{#807029}