The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b

commit 0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b
Author: Aaron Leventhal <aleventhal@chromium.org>
Date: Tue Nov 07 07:53:32 2017

Do not expose cell text a second time via AXTitle

When navigating around a table with VoiceOver via Ctrl+Alt+arrow, each cell is
read twice. In Safari this does not occur because the cell does not have an
AXTitle that duplicates the text content of the cell.

Bug:  780276 
Change-Id: If9f7b3af5542125a080227c48fb7b19c002fa3fe
Reviewed-on: https://chromium-review.googlesource.com/747868
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#514420}
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/browser/accessibility/browser_accessibility_cocoa.mm
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-col-attr-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-columnheader-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-columnheader.html
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-grid-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-gridcell-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-level-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-row-attr-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-row-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-rowheader-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-rowheader.html
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-sort-aria-grid-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-sort-html-table-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-table-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/aria-treegrid-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/aria/table-column-hidden-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/caption-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/in-page-links-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-simple-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-spans-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-th-colheader-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-th-colheader.html
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-th-rowheader-expected-mac.txt
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-th-rowheader.html
[modify] https://crrev.com/0ec141c92381a6f85b890a8c8c6ff6bfdda47b5b/content/test/data/accessibility/html/table-thead-tbody-tfoot-expected-mac.txt