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Replaced the usage of ProfileOAuth2TokenService and SigninManager by
identity API calls.

This CL adds a new function to the identity_test_utils.h set to set
the auth error of a given account with a refresh token.

Bug: 903859
Change-Id: I29e1ae3bee6ba7f69404f5f2bb7152fa0db9101d
Reviewed-on: https://chromium-review.googlesource.com/c/1352250Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Commit-Queue: Sergio Villar <svillar@igalia.com>
Cr-Commit-Position: refs/heads/master@{#611821}