The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8ac055bf9d6612170c60456541f3382742966563

commit 8ac055bf9d6612170c60456541f3382742966563
Author: Julie Jeongeun Kim <jkim@igalia.com>
Date: Fri Jan 18 03:47:12 2019

[s13n] Remove unused headers from user_image_manager_browsertest.cc

This CL remove unused headers, profile_oauth2_token_service.h,
gaia_oauth_client.h and oauth2_token_service.h.

Bug:  921544 
TBR: jdufault@chromium.org
Change-Id: Ide1ba695aaf08d15869dae61d5a92c7ec1d4a9a1
Reviewed-on: https://chromium-review.googlesource.com/c/1414412
Commit-Queue: Julie Jeongeun Kim <jkim@igalia.com>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#623995}
[modify] https://crrev.com/8ac055bf9d6612170c60456541f3382742966563/chrome/browser/chromeos/login/users/avatar/user_image_manager_browsertest.cc