GitLab

Avoid "Check failed: false. We don't support iterating over objects
excluded from the accessibility tree." by using
ParentObjectIncludedInTree() while computing
NextOnLine(), PreviousOnLine().

Bug: 1153437
Change-Id: Iebd58d44912dcf9ac20b3e0e618af3e7b7b56b4f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2576625Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Auto-Submit: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834692}