Currently, screen readers simply say "button" when they are focused. There should be more context, such as "close button".
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/9ab71bedab6c6b78ad3b03db23b23e279552100c commit 9ab71bedab6c6b78ad3b03db23b23e279552100c Author: apacible <apacible@chromium.org> Date: Mon Apr 04 22:21:25 2016 [Media Router WebUI] Set titles for buttons. This allows screen readers to give more context when buttons are highlighted. BUG= 599938 Review URL: https://codereview.chromium.org/1857523002 Cr-Commit-Position: refs/heads/master@{#385029} [modify] https://crrev.com/9ab71bedab6c6b78ad3b03db23b23e279552100c/chrome/app/media_router_strings.grdp [modify] https://crrev.com/9ab71bedab6c6b78ad3b03db23b23e279552100c/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.html [modify] https://crrev.com/9ab71bedab6c6b78ad3b03db23b23e279552100c/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js [modify] https://crrev.com/9ab71bedab6c6b78ad3b03db23b23e279552100c/chrome/browser/resources/media_router/elements/media_router_header/media_router_header.html [modify] https://crrev.com/9ab71bedab6c6b78ad3b03db23b23e279552100c/chrome/browser/resources/media_router/elements/media_router_header/media_router_header.js [modify] https://crrev.com/9ab71bedab6c6b78ad3b03db23b23e279552100c/chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc
verified on 51.0.2701.0 chrome version
Comment 1 by apaci...@chromium.org
, Apr 4 2016