crOS Account Manager a11y fix

Error badges should not participate in the reading from screen readers
like ChromeVox. This is similar to the other error icon:
|IDR_WEBUI_IMAGES_ERROR|, which is always set as a background image and
never with an |img| tag.

Bug: 966770
Change-Id: I798edae34aca18c0f2e7be927bc452cf90c05b27
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1628735
Commit-Queue: Kush Sinha <sinhak@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663087}
1 file changed