Run linux_specific_chromium_gtests on the linux memory bots.

Enables these tests on the linux memory bots:

    filesystem_service_unittests
    leveldb_service_unittests
    traffic_annotation_auditor_unittests

They already run on the regular main waterfall linux bots and
on the clang tot bots.

Bug: 843511
Change-Id: Ie0f1b5ea6433c2f21f87df993ac205f4553ced89
Reviewed-on: https://chromium-review.googlesource.com/1091070
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565342}
2 files changed