[ServiceWorker] Use appopriate type parameters for WebCallbacks (2/3)

[ServiceWorker] Use appopriate type parameters for WebCallbacks (2/3)

 - WebServiceWorkerRegistration* (ownership transferred)
  => WebPassOwnPtr<WebServiceWorkerRegistration>
 - WebVector<WebServiceWorkerRegistration*> (ownership transferred)
  => WebPassOwnPtr<WebVector<WebServiceWorkerRegistration*>>
 - WebServiceWorkerError* (ownership transferred)
  => const WebServiceWorkerError&

This CL also fixes mis-typing between WebServiceWorkerRegistrationCallbacks
and WebServiceWorkerGetRegistrationCallbacks.

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://crrev.com/2befe77d596b9a2507b695181c130eb3b9540a1e
Cr-Commit-Position: refs/heads/master@{#345955}

[yhirano, 2015-08-27 13:38:52]

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

[nhiroki, 2015-08-27 14:05:40]

LGTM

[yhirano, 2015-08-27 18:50:32]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2015-08-27 18:51:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1318953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1318953002/1

[commit-bot: I haz the power, 2015-08-27 19:45:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-27 19:46:24]

Patchset 1 (id:??) landed as
https://crrev.com/2befe77d596b9a2507b695181c130eb3b9540a1e
Cr-Commit-Position: refs/heads/master@{#345955}

[nhiroki, 2015-09-04 03:01:40]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1325153007/ by nhiroki@chromium.org.

The reason for reverting is: According to http://crbug.com/523904 (see c#11),
these callbacks will not always receive object ownership and not be able to use
WebPassOwnPtr, so let me revert this series of CLs..