Backport some tests in /components/network_time to SingleThreadTaskEnvironment

These tests were previously migrated from single-threaded MessageLoop to
a multi-threaded TaskEnvironment (then named ScopedTaskEnvironment) as
part of

//base OWNERS decided in retrospect that it was better to keep a
single-threaded option for TaskEnvironment and introduced
SingleThreadTaskEnvironment. This CL retrofits that decision for

This CL is a no-op if it passes CQ.

This CL was uploaded by git cl split.

Bug: 891670
Change-Id: I444ad4c122f248c1a1116752cc253d55da465708
Auto-Submit: Gabriel Charette <>
Commit-Queue: Nicolas Zea <>
Reviewed-by: Nicolas Zea <>
Cr-Commit-Position: refs/heads/master@{#695722}
1 file changed