Add method to delete storage for origins to LocalStorageContextMojo.

Add method to delete storage for origins to LocalStorageContextMojo.

Also changes LevelDBWrapperImpl to not unnecessary read all the existing
data if it is immediately going to delete it all anyway.

BUG=586194
Committed: https://crrev.com/a9c2a3c1911c2845d336e50f57986470ae7dabb1
Cr-Commit-Position: refs/heads/master@{#440984}

[Marijn Kruisselbrink, 2016-12-28 23:16:54]

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

[commit-bot: I haz the power, 2016-12-28 23:17:04]

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 23:39:24]

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

[commit-bot: I haz the power, 2016-12-28 23:39:35]

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, 2016-12-29 00:34:59]

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

[commit-bot: I haz the power, 2016-12-29 00:35:00]

Dry run: This issue passed the CQ dry run.

[Marijn Kruisselbrink, 2016-12-29 18:21:55]

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

[commit-bot: I haz the power, 2016-12-29 18:22:07]

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

[Marijn Kruisselbrink, 2016-12-29 18:56:33]

Description was changed from

==========
Implement DeleteStorage(origin) method for mojo localstorage.

Not hooked up to DOMStorageContextWrapper yet, but the functionality that
should be there is there.

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

to

==========
Add method to delete storage for origins to LocalStorageContextMojo.

Also changes LevelDBWrapperImpl to not unnecessary read all the existing
data if it is immediately going to delete it all anyway.

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

[Marijn Kruisselbrink, 2016-12-29 19:09:34]

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

[commit-bot: I haz the power, 2016-12-29 19:32:47]

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

[commit-bot: I haz the power, 2016-12-29 19:32:48]

Dry run: This issue passed the CQ dry run.

[jam, 2016-12-29 20:39:27]

lgtm

[Marijn Kruisselbrink, 2016-12-29 20:46:48]

The CQ bit was checked by mek@chromium.org

[commit-bot: I haz the power, 2016-12-29 20:47:11]

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, 2016-12-29 20:50:21]

CQ is committing da patch.

Bot data: {"patchset_id": 60001, "attempt_start_ts": 1483044408929090,
"parent_rev": "b188c2ca293042a172955184a79041b10d2b2bd5", "commit_rev":
"0469896a7d0603cf0c40ad476fd37271ae07ce48"}

[commit-bot: I haz the power, 2016-12-29 20:50:55]

Description was changed from

==========
Add method to delete storage for origins to LocalStorageContextMojo.

Also changes LevelDBWrapperImpl to not unnecessary read all the existing
data if it is immediately going to delete it all anyway.

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

to

==========
Add method to delete storage for origins to LocalStorageContextMojo.

Also changes LevelDBWrapperImpl to not unnecessary read all the existing
data if it is immediately going to delete it all anyway.

BUG=586194

Review-Url: https://codereview.chromium.org/2605133002
==========

[commit-bot: I haz the power, 2016-12-29 20:50:56]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2017-01-02 15:53:05]

Description was changed from

==========
Add method to delete storage for origins to LocalStorageContextMojo.

Also changes LevelDBWrapperImpl to not unnecessary read all the existing
data if it is immediately going to delete it all anyway.

BUG=586194

Review-Url: https://codereview.chromium.org/2605133002
==========

to

==========
Add method to delete storage for origins to LocalStorageContextMojo.

Also changes LevelDBWrapperImpl to not unnecessary read all the existing
data if it is immediately going to delete it all anyway.

BUG=586194

Committed: https://crrev.com/a9c2a3c1911c2845d336e50f57986470ae7dabb1
Cr-Commit-Position: refs/heads/master@{#440984}
==========

[commit-bot: I haz the power, 2017-01-02 15:53:06]

Patchset 4 (id:??) landed as
https://crrev.com/a9c2a3c1911c2845d336e50f57986470ae7dabb1
Cr-Commit-Position: refs/heads/master@{#440984}