Remove usage of ScopedTaskScheduler from browser_process_impl_unittest.cc.

ScopedTaskScheduler is deprecated.

Bug: 708584
Change-Id: I011a4eab603068729a0c754e4e4dc6a33b23ec77
Reviewed-on: https://chromium-review.googlesource.com/586924
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Francois Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490773}
1 file changed