[WONT COMMIT] Revert of [ServiceWorker] Use appopriate type parameters for WebCallbacks (3/3)

Revert of [ServiceWorker] Use appopriate type parameters for WebCallbacks (3/3) (patchset #1 id:1 of https://codereview.chromium.org/1316293002/ )

Reason for revert:
This is a preliminary CL to revert changes for http://crbug.com/523904.

Currently these callbacks always receive object ownership, but it's
a misinterpretation of the spec and actually Blink cannot assume the
embedder always passes object ownership. To fix it, this CL reverts
changes dependent on the misinterpretation.

Original issue's description:
> [ServiceWorker] Use appopriate type parameters for WebCallbacks (3/3)
> 
> 
>  - WebServiceWorkerRegistration* (ownership transferred)
>   => WebPassOwnPtr<WebServiceWorkerRegistration>
>  - WebVector<WebServiceWorkerRegistration*> (ownership transferred)
>   => WebPassOwnPtr<WebVector<WebServiceWorkerRegistration*>>
>  - WebServiceWorkerError* (ownership transferred)
>   => const WebServiceWorkerError&
> 
> 1/3: https://codereview.chromium.org/1312343004/
> 2/3: https://codereview.chromium.org/1318953002/
> 3/3: https://codereview.chromium.org/1316293002/
> 
> BUG=493531, 525340
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201351

TBR=yhirano@chromium.org
BUG=493531, 525340, 523904

[nhiroki, 2015-09-03 02:22:18]

Created Revert of [ServiceWorker] Use appopriate type parameters for
WebCallbacks (3/3)

[nhiroki, 2015-09-03 02:25:12]

The CQ bit was checked by nhiroki@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-03 02:25:17]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322283002/1

[commit-bot: I haz the power, 2015-09-03 02:25:26]

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

[commit-bot: I haz the power, 2015-09-03 02:25:27]

Dry run: This issue passed the CQ dry run.

[nhiroki, 2015-09-03 02:25:51]

The CQ bit was checked by nhiroki@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-03 02:26:03]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322283002/1

[nhiroki, 2015-09-03 02:27:38]

Hi Hirano-san, can you take a look at this?
I'm really sorry for wasting your time...

[commit-bot: I haz the power, 2015-09-03 03:06:43]

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

[commit-bot: I haz the power, 2015-09-03 03:06:44]

Dry run: This issue passed the CQ dry run.

[nhiroki, 2015-09-04 02:21:36]

To be clear, my main purpose is to revert my changes associated with issue
523904. yhirano@'s cleanup CLs depend on my changes, so I'd like to revert them
first.

[yhirano, 2015-09-04 02:23:30]

lgtm

[nhiroki, 2015-09-04 02:30:13]

Thank you!

[nhiroki, 2015-09-04 03:01:43]

The CQ bit was checked by nhiroki@chromium.org

[commit-bot: I haz the power, 2015-09-04 03:01:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322283002/1

[nhiroki, 2015-09-04 03:03:09]

The CQ bit was unchecked by nhiroki@chromium.org

[nhiroki, 2015-09-04 03:22:18]

Updated a CL description to clarify my intention more.

[nhiroki, 2015-09-04 03:22:28]

The CQ bit was checked by nhiroki@chromium.org

[commit-bot: I haz the power, 2015-09-04 03:22:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322283002/1

[yhirano, 2015-09-04 04:54:04]

The CQ bit was unchecked by yhirano@chromium.org

[nhiroki, 2015-09-04 07:53:42]

I had offline chat with yhirano@, and we decided to take another approach
instead of reverting these changes. I'll close this and make separate changes.