Disable flaky test BackgroundTracingThrottleTimeElapsed on Linux

Disable flaky test BackgroundTracingThrottleTimeElapsed on Linux

TBR=dsinclair@chromium.org
BUG=723933
Review-Url: https://codereview.chromium.org/2891043003
Cr-Commit-Position: refs/heads/master@{#472761}
Committed: https://chromium.googlesource.com/chromium/src/+/e9399f008302fcb62a257e67951497290bd7e93e

[Marc Treib, 2017-05-18 09:49:19]

The CQ bit was checked by treib@chromium.org

[commit-bot: I haz the power, 2017-05-18 09:49:47]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-18 10:37:06]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495100959250030, "parent_rev":
"924fc5cd56d0982004f3ad5163fc00cabf854d48", "commit_rev":
"e9399f008302fcb62a257e67951497290bd7e93e"}

[commit-bot: I haz the power, 2017-05-18 10:37:17]

Description was changed from

==========
Disable flaky test BackgroundTracingThrottleTimeElapsed on Linux

TBR=dsinclair@chromium.org
BUG=723933
==========

to

==========
Disable flaky test BackgroundTracingThrottleTimeElapsed on Linux

TBR=dsinclair@chromium.org
BUG=723933

Review-Url: https://codereview.chromium.org/2891043003
Cr-Commit-Position: refs/heads/master@{#472761}
Committed:
https://chromium.googlesource.com/chromium/src/+/e9399f008302fcb62a257e679514...
==========

[commit-bot: I haz the power, 2017-05-18 10:37:20]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e9399f008302fcb62a257e679514...