[ServiceWorker] support OPTIONS request for ServiceWorker [2/3 chromium]

[ServiceWorker] support OPTIONS request for ServiceWorker [2/3 chromium]

Currently we can't handle OPTIONS request in the ServiceWorker.

This check is done in content/browser/service_worker/service_worker_request_handler.cc.
But we should support OPTIONS request except for CORS preflight request.

[1/3] blink: https://codereview.chromium.org/738033002/
Set SkipServiceWorker flag for CORS preflight request.
[2/3] chromium: https://codereview.chromium.org/716083003/
Remove IsMethodSupportedForServiceWorker check in service_worker_request_handler.cc
[3/3] blink: https://codereview.chromium.org/743653002/
Cleanup and add update LayoutTest.

BUG=434660
Committed: https://crrev.com/1df059534ca200db1ef3189fd1e23fc7641c984f
Cr-Commit-Position: refs/heads/master@{#305250}

[horo, 2014-11-19 12:43:12]

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

[horo, 2014-11-19 12:43:12]

yhirano@
Could you please review this?

[yhirano, 2014-11-21 03:38:02]

lgtm

[horo, 2014-11-21 17:53:21]

The CQ bit was checked by horo@chromium.org

[commit-bot: I haz the power, 2014-11-21 17:54:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/716083003/1

[commit-bot: I haz the power, 2014-11-21 18:46:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-21 18:47:00]

Patchset 1 (id:??) landed as
https://crrev.com/1df059534ca200db1ef3189fd1e23fc7641c984f
Cr-Commit-Position: refs/heads/master@{#305250}