Some more details:

after https://codereview.chromium.org/2688153004/ oobe-dialog will call focus() on <cr-network-select id="networkSelect" class="focus-on-show"> . We need this to work.

So we can call this issue as "Fix focus on OOBE NetworkSelection screen" or "Make cr-network-select::focus() work".

You need to enable ChromeVox to test this, because you won't see focus otherwise. Right now, "Let's go" button from the previous screen is still focused.

This is mostly an accessibility issue, but probably it is also "nice to have" for other cases.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e96528b1b2250ef51580a706dd7950293944cfd3

commit e96528b1b2250ef51580a706dd7950293944cfd3
Author: stevenjb <stevenjb@chromium.org>
Date: Wed Feb 22 17:44:56 2017

MD OOBE: Focus network list when shown

This is a slightly simpler alternative to:
https://codereview.chromium.org/2705793002/

BUG= 694733 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2708253002
Cr-Commit-Position: refs/heads/master@{#452115}

[modify] https://crrev.com/e96528b1b2250ef51580a706dd7950293944cfd3/chrome/browser/resources/chromeos/login/oobe_welcome.js
[modify] https://crrev.com/e96528b1b2250ef51580a706dd7950293944cfd3/ui/webui/resources/cr_elements/network/cr_network_list.js
[modify] https://crrev.com/e96528b1b2250ef51580a706dd7950293944cfd3/ui/webui/resources/cr_elements/network/cr_network_select.html
[modify] https://crrev.com/e96528b1b2250ef51580a706dd7950293944cfd3/ui/webui/resources/cr_elements/network/cr_network_select.js