GitLab

Update IdentityManager initialization flow during the AccountManager
migration. After the offline login the |user_context| has no token,
hence the Primary account could not be setup for the IdentityManager.
Add login account to the AccountManager in case it is not presented
there to properly setup primary account for the IdentityManager.
The primary account with token will be configured later during
the AccountManager migration process.
Remove |DeprecatedSetPrimaryAccountAndUpdateAccountInfo|.

Bug: 987955
Change-Id: Ia1665e8337e26ca05af9a9abc43ab23816fce14d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2131912
Commit-Queue: Andrei Salavei <solovey@google.com>
Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Kush Sinha <sinhak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758775}