Revert of Disable telemetry tests for Mac 10.9.

Revert of Disable telemetry tests for Mac 10.9. (patchset #2 id:20001 of https://codereview.chromium.org/706703003/)

Reason for revert:
Second attempt to re-enable tests. I think there may still be one test failure, but we can disable that one test. If there's more than one, revert this.

Original issue's description:
> Disable telemetry tests for Mac 10.9.
>
> The telemetry tests are failing consistently on OSX 10.9.
>
> BUG=420615
> R=tonyg@chromium.org
>
> Committed: https://crrev.com/5503de1eeae0437c1f8160d69b04d6241bc5e974
> Cr-Commit-Position: refs/heads/master@{#303114}

TBR=phajdan.jr@chromium.org,tonyg@chromium.org,garykac@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=420615
Committed: https://crrev.com/10e58e6dfbe4d9dae5841ceb9eb0180cce1aac14
Cr-Commit-Position: refs/heads/master@{#305096}

[dtu, 2014-11-20 22:48:33]

Created Revert of Disable telemetry tests for Mac 10.9.

[commit-bot: I haz the power, 2014-11-20 22:50:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/744283002/1

[commit-bot: I haz the power, 2014-11-20 22:52:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-20 22:53:27]

Patchset 1 (id:??) landed as
https://crrev.com/10e58e6dfbe4d9dae5841ceb9eb0180cce1aac14
Cr-Commit-Position: refs/heads/master@{#305096}

[Finnur, 2014-11-21 11:26:46]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/751533002/ by finnur@chromium.org.

The reason for reverting is: This re-enabling of tests has left a trail of
redness on Mac 10.9 (more than one failure). If you expect tests to fail as a
result of re-enabling again, then please watch the tree and disable the ones
failing (assuming that is the appropriate course of action in the first place,
which I'm not sure of)..