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These are testing private services/network/ classes, so should be in
services/network/.

Bug: None
Change-Id: I8f736112feb755c035e88570a180cc6debc128e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1907073Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714900}