GitLab

[s13n] Convert identity_apitest.cc to use IdentityTestEnvironment

This bug is a follow up of [1] and [2], where production code
(//c/b/extensions/api/identity/identity_api.cc) is migrated away from
using PO2TS in favor of IdentityManager, and the API is extended to
accommodate the needs of this migration, respectively.

[1] https://crrev.com/b/1340890
[2] https://crrev.com/b/1346609

BUG=906615

Change-Id: Ib41f99f08b7d181bbcff28be97c8b55993aa8c04
Reviewed-on: https://chromium-review.googlesource.com/c/1343019
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610844}