GitLab

Going forward the default API for interacting with authentication error
should be the token service rather than the SigninErrorController.
This CL updates tests to use the token service instead of
AuthErrorProvider to set authentication errors.

Bug: 836212
Change-Id: I9b5629bad7b17b6cab70978cc23bbc828bf62d61
Reviewed-on: https://chromium-review.googlesource.com/1016904
Commit-Queue: David Roger <droger@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561830}