GitLab

When the sync error state changes from one error
to another, the AvatarToolbarButton was not updated.
This CL fixes this.

Bug: 881874
Change-Id: I247cf12a18f8122a22b2d51dd5e6f1febdd6f432
Reviewed-on: https://chromium-review.googlesource.com/1215864Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589894}