Telemetry: Re-enable ServiceWorkerPerfTest, increase timeout for VideoRecorder.IsStarted

Telemetry: Re-enable ServiceWorkerPerfTest, increase timeout for VideoRecorder.IsStarted

ServiceWorkerPerfTest was failing on Android One, due to timeouts of
VideoRecorder.IsStarted(). This patch attempts to fix this by increasing
the timeout from 5 seconds to 10 seconds, and re-enable the test.

BUG=469841
TEST=tools/perf/run_benchmark --browser=trybot-all-android service_worker.service_worker

Committed: https://crrev.com/42ce01867659573b37b46df12a3db18ba26674b9
Cr-Commit-Position: refs/heads/master@{#326820}

[Kunihiko Sakamoto, 2015-04-24 09:33:53]

ksakamoto@chromium.org changed reviewers:
+ sullivan@chromium.org

[sullivan, 2015-04-24 15:13:45]

lgtm

cc-ing Oystein and Ethan who've been trying to figure out the issue from our
end. I'm okay with submitting this if it passes on the perf trybots:

https://codereview.chromium.org/1098953007

Btw, you can run as many perf tryjobs as you like to try and pinpoint why it is
not working on Android one, adding logging as necessary. Command line:

tools/perf/run_benchmark --also-run-disabled-tests --browser=trybot-android-one
service_worker.service_worker

[sullivan, 2015-04-24 16:02:58]

cc-ing miletus, current perf sheriff

This passed on the perf trybots:
http://build.chromium.org/p/tryserver.chromium.perf/builders/android_one_perf...

I'm going to CQ it, miletus feel free to revert if it fails on the waterfall.

[sullivan, 2015-04-24 16:03:00]

The CQ bit was checked by sullivan@chromium.org

[commit-bot: I haz the power, 2015-04-24 16:03:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1093923004/1

[commit-bot: I haz the power, 2015-04-24 17:02:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-24 17:03:23]

Patchset 1 (id:??) landed as
https://crrev.com/42ce01867659573b37b46df12a3db18ba26674b9
Cr-Commit-Position: refs/heads/master@{#326820}

[Kunihiko Sakamoto, 2015-04-27 06:41:14]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1099033005/ by ksakamoto@chromium.org.

The reason for reverting is: It still times out:
http://build.chromium.org/p/chromium.perf/builders/Android%20One%20Perf/build...
.