GitLab

Update the icon of the avatar toolbar button when
an account is signed out.
This happens for instance when the user selects cancel
on the sync-confirmation dialog.

Bug: 870656
Change-Id: Id557500c02ef2ac10d704cde75a9afe9db5e7655
Reviewed-on: https://chromium-review.googlesource.com/1185195Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585148}