[s13n] Eliminate fake_profile_oauth2_token_service_builder.cc/h

This CL removes fake_profile_oauth2_token_service_builder.cc/h and
moves BuildFakeProfileOAuth2TokenService() to internal API in
identity_test_environment_profile_adaptor.cc.

Bug: 926941
Change-Id: Icacaa5626981ccda81478f072a144e310fd38d40
Reviewed-on: https://chromium-review.googlesource.com/c/1457803
Commit-Queue: Julie Jeongeun Kim <jkim@igalia.com>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630244}
4 files changed