Enable the tracingMetric on the system_health.common benchmarks

Enable the tracingMetric on the system_health.common benchmarks

This will allow us to monitor the performance of importing traces.

BUG=chromium:665550
Review-Url: https://codereview.chromium.org/2714533002
Cr-Commit-Position: refs/heads/master@{#452507}
Committed: https://chromium.googlesource.com/chromium/src/+/6d81065580b4df8485a2222b03caad4b60ccfdb9

[charliea (OOO until 10-5), 2017-02-22 17:22:43]

charliea@chromium.org changed reviewers:
+ nednguyen@google.com

[nednguyen, 2017-02-22 18:02:12]

lgtm

[charliea (OOO until 10-5), 2017-02-23 14:59:49]

The CQ bit was checked by charliea@chromium.org

[commit-bot: I haz the power, 2017-02-23 15:00:01]

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, 2017-02-23 16:06:28]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487861989913910, "parent_rev":
"721affd3d363005352650612c5c146e6543925e2", "commit_rev":
"6d81065580b4df8485a2222b03caad4b60ccfdb9"}

[commit-bot: I haz the power, 2017-02-23 16:07:05]

Description was changed from

==========
Enable the tracingMetric on the system_health.common benchmarks

This will allow us to monitor the performance of importing traces.

BUG=chromium:665550
==========

to

==========
Enable the tracingMetric on the system_health.common benchmarks

This will allow us to monitor the performance of importing traces.

BUG=chromium:665550

Review-Url: https://codereview.chromium.org/2714533002
Cr-Commit-Position: refs/heads/master@{#452507}
Committed:
https://chromium.googlesource.com/chromium/src/+/6d81065580b4df8485a2222b03ca...
==========

[commit-bot: I haz the power, 2017-02-23 16:07:06]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6d81065580b4df8485a2222b03ca...