Remove the DB thread spinning at the end of profile browsertests.

Non-test usage of the DB thread has been removed so this is a no-op.

Bug: 689520
Change-Id: I4e03ac890afa2584c60fccaff4f88ebbde1e12f3
Reviewed-on: https://chromium-review.googlesource.com/620287
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Sam McNally <sammc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#495512}
1 file changed