Don't run streams tests with network service.

PDF and QuickOffice plugins use the mimeHandler API only. Once QuickOffice that uses mimeHandler is updated to all users (depends on 67 reaching stable) we can delete the streams API code.

Bug: 705114
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Change-Id: Ia402364e4ee88e9f3eb06b3e413253ffb5e71413
Reviewed-on: https://chromium-review.googlesource.com/1013403
Reviewed-by: Sam McNally <sammc@chromium.org>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551178}
3 files changed