Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Initially this callback is used to delay writing the schema version until data
actually gets committed. In follow-up CLs this will also be used to store
per-origin metadata.

BUG=586194
Committed: https://crrev.com/910bc047d998d05615b13c256c98d71e8bc9cc4e
Cr-Commit-Position: refs/heads/master@{#440861}

[Marijn Kruisselbrink, 2016-12-28 00:10:57]

Description was changed from

==========
WIP store metadata for localstorage

BUG=
==========

to

==========
Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Initially this callback is used to delay writing the schema version until data
actually gets committed. In follow-up CLs this will also be used to store
per-origin metadata.

BUG=586194
==========

[Marijn Kruisselbrink, 2016-12-28 00:11:02]

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

[commit-bot: I haz the power, 2016-12-28 00:11:17]

Dry run: 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, 2016-12-28 00:21:43]

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

[commit-bot: I haz the power, 2016-12-28 00:21:43]

Dry run: Try jobs failed on following builders:
  linux_chromium_chromeos_ozone_rel_ng on master.tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Marijn Kruisselbrink, 2016-12-28 00:25:20]

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

[commit-bot: I haz the power, 2016-12-28 00:25:30]

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

[Marijn Kruisselbrink, 2016-12-28 00:34:34]

mek@chromium.org changed reviewers:
+ jam@chromium.org, michaeln@chromium.org

[commit-bot: I haz the power, 2016-12-28 01:23:47]

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

[commit-bot: I haz the power, 2016-12-28 01:23:48]

Dry run: This issue passed the CQ dry run.

[jam, 2016-12-28 05:51:44]

lgtm

[Marijn Kruisselbrink, 2016-12-28 17:20:49]

The CQ bit was checked by mek@chromium.org

[commit-bot: I haz the power, 2016-12-28 17:20:57]

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, 2016-12-28 17:24:39]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1482945649116490,
"parent_rev": "90acc77bbba89df8fe4aec7a8ac0560d6ed8164a", "commit_rev":
"198290437b5c0b3384f639dcea46f20ea9f22693"}

[commit-bot: I haz the power, 2016-12-28 17:25:05]

Description was changed from

==========
Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Initially this callback is used to delay writing the schema version until data
actually gets committed. In follow-up CLs this will also be used to store
per-origin metadata.

BUG=586194
==========

to

==========
Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Initially this callback is used to delay writing the schema version until data
actually gets committed. In follow-up CLs this will also be used to store
per-origin metadata.

BUG=586194

Review-Url: https://codereview.chromium.org/2597353002
==========

[commit-bot: I haz the power, 2016-12-28 17:25:06]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2017-01-02 15:49:21]

Description was changed from

==========
Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Initially this callback is used to delay writing the schema version until data
actually gets committed. In follow-up CLs this will also be used to store
per-origin metadata.

BUG=586194

Review-Url: https://codereview.chromium.org/2597353002
==========

to

==========
Add callback to LevelDBWrapperImpl to allow extra operations on commit.

Initially this callback is used to delay writing the schema version until data
actually gets committed. In follow-up CLs this will also be used to store
per-origin metadata.

BUG=586194

Committed: https://crrev.com/910bc047d998d05615b13c256c98d71e8bc9cc4e
Cr-Commit-Position: refs/heads/master@{#440861}
==========

[commit-bot: I haz the power, 2017-01-02 15:49:22]

Patchset 3 (id:??) landed as
https://crrev.com/910bc047d998d05615b13c256c98d71e8bc9cc4e
Cr-Commit-Position: refs/heads/master@{#440861}