[ServiceWorker] Fix test failure of registration.html

[ServiceWorker] Fix test failure of registration.html

This bug is introduced by https://codereview.chromium.org/647953003.
The error status must be passed to script_cache_map.
It will be checked in ServiceWorkerRegisterJob::OnStartWorkerFinished() and use to handle the error in JS.

BUG=425430
TBR=dmurph

Committed: https://crrev.com/e611a5f637f0a94142de7914848586a13b24f221
Cr-Commit-Position: refs/heads/master@{#300430}

[horo, 2014-10-21 05:50:36]

horo@chromium.org changed reviewers:
+ nhiroki@chromium.org

[horo, 2014-10-21 05:50:37]

nhiroki@
Could you please review?

[nhiroki, 2014-10-21 05:59:04]

lgtm

[horo, 2014-10-21 06:26:37]

The CQ bit was checked by horo@chromium.org

[horo, 2014-10-21 06:26:47]

Thank you!

[horo, 2014-10-21 06:26:58]

horo@chromium.org changed reviewers:
+ dmurph@chromium.org

[commit-bot: I haz the power, 2014-10-21 06:27:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/663293004/1

[commit-bot: I haz the power, 2014-10-21 07:19:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-21 07:20:47]

Patchset 1 (id:??) landed as
https://crrev.com/e611a5f637f0a94142de7914848586a13b24f221
Cr-Commit-Position: refs/heads/master@{#300430}