Replace use of AccountTrackerService by IdentityManager in signin_ui_util.cc

This CL replace use of AccountTrackerService{GetAccountInfo/
GetMigrationState} by IdentityManager{FindAccountInfoForAccountWithRefreshTokenByAccountId/
GetAccountIdMigrationState} and removes unused headers.

Bug: 922775
Change-Id: Idb1b33ccb478808ab2b3be2792e647e1ae983362
Reviewed-on: https://chromium-review.googlesource.com/c/1426249
Reviewed-by: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Abhijeet Kandalkar <abhijeet@igalia.com>
Cr-Commit-Position: refs/heads/master@{#625164}
1 file changed