Fix browser crash on shutdown when ProfileImplIOData::Handle::Init isn't called.

Fix browser crash on shutdown when ProfileImplIOData::Handle::Init isn't called.

With ephemeral profiles, in some cases, a Handle will be created and destroyed
without being initialized. Root cause of why the object is created is still not
known, but this change prevents the crash from occurring.

BUG=478215
Committed: https://crrev.com/08f40f1daf017ec5ca8a0e6e6b977ab33bff69f9
Cr-Commit-Position: refs/heads/master@{#326371}

[jeremyim, 2015-04-22 20:07:03]

jeremyim@chromium.org changed reviewers:
+ mmenke@chromium.org

[jeremyim, 2015-04-22 20:07:04]

PTAL. Thanks! =)

[mmenke, 2015-04-22 20:09:45]

On 2015/04/22 20:07:04, jeremyim wrote:
> PTAL. Thanks! =)

LGTM

[jeremyim, 2015-04-22 20:18:39]

The CQ bit was checked by jeremyim@chromium.org

[commit-bot: I haz the power, 2015-04-22 20:19:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1072143003/1

[commit-bot: I haz the power, 2015-04-22 20:56:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-22 20:57:14]

Patchset 1 (id:??) landed as
https://crrev.com/08f40f1daf017ec5ca8a0e6e6b977ab33bff69f9
Cr-Commit-Position: refs/heads/master@{#326371}