This CL updates the treatment of alert dialogs and comboboxes for
Android accessibility to label them as panes with a paneTitle, rather
than forcing an announcement with TYPE_ANNOUNCEMENT. The content that
was previously read by the announcement has been unchanged but moved
to the paneTitle for the node.
AX-Relnotes: N/A
Bug: 371988580, 372427591
Change-Id: Ia729e80972406bf180caf6b8a367a475df04b27a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5991190
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1383074}