GitLab

Change the way we handle accessibility strings to that there are three options:

not set -> the default description is used
empty string -> the view is ignored by accessibility
non-empty string -> the string is used as description

Bug: b/143757329
Change-Id: I39cd9bf4a634fa7482c485320d2a81d8513eb935
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1926590
Commit-Queue: Luca Hunkeler <hluca@google.com>
Reviewed-by: Clemens Arbesser <arbesser@google.com>
Cr-Commit-Position: refs/heads/master@{#719542}