Don't create ServiceWorker provider in dedicated workers (yet)

Don't create ServiceWorker provider in dedicated workers (yet)

We don't expose ServiceWorker in WorkerNavigator yet, and creating
a provider for workers could cause data-race with the current code.
(See https://code.google.com/p/chromium/issues/detail?id=423107#c8 for
more details)

BUG=423107, 371690
R=michaeln

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185090

[kinuko, 2014-11-10 16:09:23]

I thought probably I could fix this bug that I introduced half a year ago. 
Could you take a look?  (See
https://code.google.com/p/chromium/issues/detail?id=423107#c8 for context)

[michaeln1, 2014-11-10 22:35:48]

michaeln@google.com changed reviewers:
+ michaeln@google.com

[michaeln1, 2014-11-10 22:35:48]

lgtm (thank you kinuko!)

[kinuko, 2014-11-11 00:54:09]

kinuko@chromium.org changed reviewers:
+ adamk@chromium.org

[kinuko, 2014-11-11 00:55:22]

Adam, can you do the OWNER review for this?

[adamk, 2014-11-11 00:56:58]

lgtm for Source/web

[kinuko, 2014-11-11 00:59:20]

The CQ bit was checked by kinuko@chromium.org

[commit-bot: I haz the power, 2014-11-11 01:00:23]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/717553003/1

[commit-bot: I haz the power, 2014-11-11 02:02:50]

Committed patchset #1 (id:1) as 185090