Remove usage of ScopedTaskScheduler from client_cert_resolver_unittest.cc.

ScopedTaskScheduler is deprecated.

Bug: 708584
Change-Id: Ib17cbb11344009fa228e3533905d8f44bfff1c79
Reviewed-on: https://chromium-review.googlesource.com/586970
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Francois Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490396}
1 file changed