Port signin_util_win.cc to IdentityManager

This CL replaces usage of SigninManager and ProfileOAuth2TokenService
with IdentityManager and also removes respective headers.

Bug: 920229
Change-Id: I4241e1c5914e92cf4a3b92e8889a036007222d05
Reviewed-on: https://chromium-review.googlesource.com/c/1454105
Reviewed-by: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Abhijeet Kandalkar <abhijeet@igalia.com>
Cr-Commit-Position: refs/heads/master@{#629604}
1 file changed