Fix crash in fuzz test.

Fix crash in fuzz test.

When provided with odd configurations, the video frame pool can return null, causing
a crash. Add a simple workaround.

BUG=650191
Committed: https://crrev.com/6f4c79b2b5a767a56d7fc3158697cd3941e001ac
Cr-Commit-Position: refs/heads/master@{#423294}

[hubbe, 2016-10-05 19:11:49]

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

[commit-bot: I haz the power, 2016-10-05 19:12:17]

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

[hubbe, 2016-10-05 19:12:18]

hubbe@chromium.org changed reviewers:
+ sandersd@chromium.org

[sandersd (OOO until July 31), 2016-10-05 19:14:29]

lgtm

[hubbe, 2016-10-05 19:15:53]

The CQ bit was unchecked by hubbe@chromium.org

[hubbe, 2016-10-05 19:15:57]

The CQ bit was checked by hubbe@chromium.org

[hubbe, 2016-10-05 19:16:01]

The CQ bit was checked by hubbe@chromium.org

[commit-bot: I haz the power, 2016-10-05 19:16:32]

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, 2016-10-05 21:15:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-05 21:19:46]

Description was changed from

==========
Fix crash in fuzz test.

When provided with odd configurations, the video frame pool can return null,
causing
a crash. Add a simple workaround.

BUG=650191
==========

to

==========
Fix crash in fuzz test.

When provided with odd configurations, the video frame pool can return null,
causing
a crash. Add a simple workaround.

BUG=650191

Committed: https://crrev.com/6f4c79b2b5a767a56d7fc3158697cd3941e001ac
Cr-Commit-Position: refs/heads/master@{#423294}
==========

[commit-bot: I haz the power, 2016-10-05 21:19:47]

Patchset 1 (id:??) landed as
https://crrev.com/6f4c79b2b5a767a56d7fc3158697cd3941e001ac
Cr-Commit-Position: refs/heads/master@{#423294}