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It seems the x86 emulator is a little bit slow or it connects to
cloud, the query response come back during the test.

This patch disable the download server in tests.

Bug: 1161326

Change-Id: I19171957ca266f8827eb14a55e017b901ea60201
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2633203Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Dominic Battré <battre@chromium.org>
Reviewed-by: Shimi Zhang <ctzsm@chromium.org>
Commit-Queue: Michael Bai <michaelbai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846208}