GitLab

During profile startup, some of the a11y preferences were not reset --
those related to the mutualof tts engines used by extensions. Here
we reset them as well.

Bug: 1049566
Change-Id: If4c57cc3a165871eaa812af58e6d698c25be36e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2360018Reviewed-by: Anqing Zhao <anqing@chromium.org>
Commit-Queue: Anatoliy Potapchuk <apotapchuk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799060}