The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/351f88e379d5ec6177580b70980ffd9b70d27262

commit 351f88e379d5ec6177580b70980ffd9b70d27262
Author: Wenzhao Zang <wzang@chromium.org>
Date: Thu Jul 20 19:49:21 2017

Fix several accessibility issues on login screen

(1) Remove extra focus on the disabled dropdown menu button.

(2) Make password field focused only once instead of three times.

(3) Assign the user name as ARIA label for the entire pod.

(4) Skip image until more descriptive texts are available.

Bug: 746568
Change-Id: I4ed9918947a3a7f03fe84ebbf64ab94be7e88475
Reviewed-on: https://chromium-review.googlesource.com/578459
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Alexander Alekseev <alemate@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488363}
[modify] https://crrev.com/351f88e379d5ec6177580b70980ffd9b70d27262/ui/login/account_picker/md_user_pod_row.js
[modify] https://crrev.com/351f88e379d5ec6177580b70980ffd9b70d27262/ui/login/account_picker/md_user_pod_template.html

This bug requires manual review: M61 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), ketakid@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Pls apply appropriate OSs. Thank you.

Approving merge to M61 Chrome OS.

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

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For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Sorry, I'm confused -- the fix applied totally breaks ChromeVox. Now, on the login screen, the text field is entirely invisible. Please revert.

FYI lpalmaro@. Adjusting milestone; the above change should not be merged.

As a further note, the reason why you're hearing the password three times is because the page is setting tabindex=0 on a containing div. This is the way a page indicates a DOM element is focusable, so ChromeVox will navigate to it. The div then contains a label for the password as well as finally, the password input itself.

Actually, it looks like that change landed in m61 which is why I guess the change was never merged...

adjusting milestone back.

dtseng@ why is this dev blocking if the fix is already merged to M61?

The "fix" is a further regression. It's what is causing 753463

Removing dev block in favor of tracking things in 753463 to reduce confusion.

To be clear, reverting the CL will make the images and dots heard again, but we are still investigating  crbug.com/753463 . 

To sum up the current status of the four issues in the bug description: 

1) Search+Right from options menu button goes to "Disabled" button.

The fix was reverted by dtseng@, I'm preparing another CL to address this.

2) The password field is focused three times.

Fixed.

3) The screen reader only says 'Image' without any description when the profile avatar is focused. 

The fix was reverted by dtseng@, and I'll leave it as is.

4) When the entire user pod is focused, screen readers say a long list of sub-items including image and name.

Fixed.

Add dtseng@ for suggestions: currently when you navigate to the drop down menu of the user pod, it says: 'Options menu for [account name]', but after pressing 'Search+Forward' again it says 'Disabled Button', instead of going to other parts of the UI. I believe the fix is to hide the paper-icon-button here: https://cs.chromium.org/chromium/src/ui/login/account_picker/md_user_pod_template.html?l=105

Do you have a better idea? Or you don't mind having the 'Disabled Button'? Please suggest.