Remove unnecessary finalization of IDBObserver classes.

Remove unnecessary finalization of IDBObserver classes.

Re-apply r402117 which r404283 accidentally reverted.

R=
BUG=609934
Committed: https://crrev.com/03b0bc7e9e724f798ebe604492160d7c91d715f3
Cr-Commit-Position: refs/heads/master@{#407418}

[sof, 2016-07-24 19:35:44]

The CQ bit was checked by sigbjornf@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2016-07-24 19:35:53]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[sof, 2016-07-24 19:57:21]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2016-07-24 19:57:22]

please take a look.

[haraken, 2016-07-24 22:21:19]

LGTM

[commit-bot: I haz the power, 2016-07-24 22:37:28]

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

[commit-bot: I haz the power, 2016-07-24 22:37:29]

Dry run: This issue passed the CQ dry run.

[sof, 2016-07-25 05:38:27]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2016-07-25 05:38:36]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-25 06:29:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-25 06:30:59]

Description was changed from

==========
Remove unnecessary finalization of IDBObserver classes.

Re-apply r402117 which r404283 accidentally reverted.

R=
BUG=609934
==========

to

==========
Remove unnecessary finalization of IDBObserver classes.

Re-apply r402117 which r404283 accidentally reverted.

R=
BUG=609934

Committed: https://crrev.com/03b0bc7e9e724f798ebe604492160d7c91d715f3
Cr-Commit-Position: refs/heads/master@{#407418}
==========

[commit-bot: I haz the power, 2016-07-25 06:31:00]

Patchset 1 (id:??) landed as
https://crrev.com/03b0bc7e9e724f798ebe604492160d7c91d715f3
Cr-Commit-Position: refs/heads/master@{#407418}