Fix static race in DatabaseAuthorizer's whitelistedFunctions.

Fix static race in DatabaseAuthorizer's whitelistedFunctions.

The DatabaseAuthorizer is created on the main thread but used on
the database thread, we should use a thread safe static local to do
the init.

BUG=628480
Committed: https://crrev.com/24bf381b82d0222181a2d3f8e2184e07c35989da
Cr-Commit-Position: refs/heads/master@{#405727}

[esprehn, 2016-07-15 04:09:57]

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

[commit-bot: I haz the power, 2016-07-15 04:10:12]

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, 2016-07-15 05:42:26]

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

[commit-bot: I haz the power, 2016-07-15 05:42:27]

Dry run: This issue passed the CQ dry run.

[esprehn, 2016-07-15 08:45:42]

esprehn@chromium.org changed reviewers:
+ haraken@chromium.org, jsbell@chromium.org

[haraken, 2016-07-15 08:46:31]

LGTM

[esprehn, 2016-07-15 08:48:21]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2016-07-15 08:48:33]

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, 2016-07-15 08:53:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-15 08:53:08]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-15 08:55:09]

Description was changed from

==========
Fix static race in DatabaseAuthorizer's whitelistedFunctions.

The DatabaseAuthorizer is created on the main thread but used on
the database thread, we should use a thread safe static local to do
the init.

BUG=628480
==========

to

==========
Fix static race in DatabaseAuthorizer's whitelistedFunctions.

The DatabaseAuthorizer is created on the main thread but used on
the database thread, we should use a thread safe static local to do
the init.

BUG=628480

Committed: https://crrev.com/24bf381b82d0222181a2d3f8e2184e07c35989da
Cr-Commit-Position: refs/heads/master@{#405727}
==========

[commit-bot: I haz the power, 2016-07-15 08:55:09]

Patchset 1 (id:??) landed as
https://crrev.com/24bf381b82d0222181a2d3f8e2184e07c35989da
Cr-Commit-Position: refs/heads/master@{#405727}