commit 6f53c4d2fdd7308b0eb60bc520bef5b7570fd930
author Joanmarie Diggs <jdiggs@igalia.com> Sat Jul 25 22:03:44 2020
committer Commit Bot <commit-bot@chromium.org> Sat Jul 25 22:03:44 2020
tree 5d61f19d02b27eaaa7b3cfb9ba1f96e1057f785b
parent 2edf00f84f2e91acab5b06a99fc2f085617cf0a9

Don't emit accessible text events from non-text or invisible objects

Fixes three dcheck failures, each of which is related to attempting to
emit AtkText events on objects which should not emit them. Therefore
add checks to EmitsAtkTextEvents to ensure AtkText is implemented for
the object, and that the object is not invisible or ignored.

In addition:

* For an HTMLMediaElement whose sole content is text (i.e. no player
  and no source), do not expose any children and treat as included
  but ignored.
* Always include Role::kVideo and Role::kAudio in the internal
  accessibility tree, even when ignored, for consistency.

AX-Relnotes: N/A as there is no change in end-user experience.

Bug: 1041414, 1104047, 1104048
Change-Id: Id643f148fdaba3c865c6cefe8f20151c3181135b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2297431
Commit-Queue: Joanmarie Diggs <jdiggs@igalia.com>
Reviewed-by: Tommy Steimel <steimel@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791541}