ServiceWorker: Retrieve performance information from TRACE_EVENTs of SW

ServiceWorker: Retrieve performance information from TRACE_EVENTs of SW

This patch will work after https://codereview.chromium.org/620553012/ is landed.

BUG=372759
TEST=./tools/perf/run_benchmark --browser=android-chrome-shell service_worker.service_worker
This must be executed after commenting out '@benchmark.Disabled' in tools/perf/benchmarks/service_worker.py.

Committed: https://crrev.com/cd8689abcf174326eeb0a107ac9b53bcc48b86bd
Cr-Commit-Position: refs/heads/master@{#299427}

[shimazu, 2014-10-03 05:29:58]

shimazu@chromium.org changed reviewers:
+ dtu@chromium.org

[shimazu, 2014-10-03 05:29:59]

Could you review this patch?

[dtu, 2014-10-14 00:13:05]

lgtm

[shimazu, 2014-10-14 01:00:11]

The CQ bit was checked by shimazu@chromium.org

[commit-bot: I haz the power, 2014-10-14 01:02:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/627593002/1

[commit-bot: I haz the power, 2014-10-14 01:53:09]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-14 01:53:10]

Try jobs failed on following builders:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[shimazu, 2014-10-14 01:56:00]

The CQ bit was checked by shimazu@chromium.org

[commit-bot: I haz the power, 2014-10-14 01:56:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/627593002/1

[commit-bot: I haz the power, 2014-10-14 02:04:07]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-14 02:04:09]

Try jobs failed on following builders:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[shimazu, 2014-10-14 03:11:31]

The CQ bit was checked by shimazu@chromium.org

[commit-bot: I haz the power, 2014-10-14 03:11:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/627593002/1

[commit-bot: I haz the power, 2014-10-14 03:52:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-14 03:53:17]

Patchset 1 (id:??) landed as
https://crrev.com/cd8689abcf174326eeb0a107ac9b53bcc48b86bd
Cr-Commit-Position: refs/heads/master@{#299427}