[telemetry] Fix blink_perf Skipped.

[telemetry] Fix blink_perf Skipped.

BUG=396001
TEST=tools/perf/run_benchmark --browser=system --also-run-disabled-tests blink_perf.mutation  # Produces 0 tests.
TBR=tonyg
NOTRY=True

Committed: https://crrev.com/3cb67f0eb135e2832a7cb1b92c674bdb0d40b57f
Cr-Commit-Position: refs/heads/master@{#295028}

[dtu, 2014-09-16 08:13:25]

The CQ bit was checked by dtu@chromium.org

[commit-bot: I haz the power, 2014-09-16 08:13:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/573983002/1

[commit-bot: I haz the power, 2014-09-16 08:14:45]

Committed patchset #1 (id:1) as c40e87dca6e99313061c5ec806c406c7da799e93

[commit-bot: I haz the power, 2014-09-16 08:16:12]

Patchset 1 (id:??) landed as
https://crrev.com/3cb67f0eb135e2832a7cb1b92c674bdb0d40b57f
Cr-Commit-Position: refs/heads/master@{#295028}