Team, could you please look into this issue. 

Thank you.

I've created go/gfiwl that has a list of buttons with missing labels and a proposed label for a11y. I'll be adding to this list. It's initially populated with the expanding section buttons.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0c44d1f694586450babe23c8346e5a51a23b201e

commit 0c44d1f694586450babe23c8346e5a51a23b201e
Author: hcarmona <hcarmona@chromium.org>
Date: Thu Sep 22 16:14:27 2016

[MD-Settings A11y] Set alt text for expandable buttons.

No UI change, this only affects the alt-label for the buttons.

BUG= 626875 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2348363002
Cr-Commit-Position: refs/heads/master@{#420364}

[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/app/settings_strings.grdp
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/resources/settings/certificate_manager_page/certificate_entry.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/resources/settings/internet_page/internet_detail_page.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/resources/settings/internet_page/internet_page.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/resources/settings/languages_page/languages_page.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/resources/settings/printing_page/cups_printer_details_page.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/ui/webui/resources/cr_elements/cr_expand_button/cr_expand_button.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/ui/webui/resources/cr_elements/cr_expand_button/cr_expand_button.js
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/ui/webui/resources/cr_elements/network/cr_network_select.html
[modify] https://crrev.com/0c44d1f694586450babe23c8346e5a51a23b201e/ui/webui/resources/cr_elements/network/cr_network_select.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8e69885a473fcaf0f6c22664a3ae5fc2b4d38425

commit 8e69885a473fcaf0f6c22664a3ae5fc2b4d38425
Author: hcarmona <hcarmona@chromium.org>
Date: Tue Sep 27 21:46:37 2016

[MD-Settings-A11y] cr-expand-button should communicate that it expanded.

Default in paper-icon-button is to aria-pressed, changing to
aria-expanded because it makes more sense for expand buttons to expand.

BUG= 626875 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2318873002
Cr-Commit-Position: refs/heads/master@{#421346}

[modify] https://crrev.com/8e69885a473fcaf0f6c22664a3ae5fc2b4d38425/chrome/test/data/chromeos/oobe_webui_browsertest.js
[modify] https://crrev.com/8e69885a473fcaf0f6c22664a3ae5fc2b4d38425/ui/webui/resources/cr_elements/cr_expand_button/cr_expand_button.html

Repros in: 55.0.2878.0
1. collapsed button
2. button pressed
3. button
4. button
5. button

Any update? How can we help to ensure that these accessibility items are fixed for md-settings?

Thanks!

pretty much all buttons will have labels as of now (desktop) and tomorrow (ChromeOS) so i'm closing this bug.

if we find any more unlabelled controls, we'll file specific issues.