Fix -Wsential warnings

Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.

TBR=erg@chromium.org

Committed: https://crrev.com/adf40034f86ab2dea41bf9ee173585d332bb8178
Cr-Commit-Position: refs/heads/master@{#412878}

[Tom (Use chromium acct), 2016-08-17 23:01:07]

The CQ bit was checked by thomasanderson@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-08-17 23:02:20]

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

[Tom (Use chromium acct), 2016-08-17 23:02:32]

Description was changed from

==========
Fix -Wsential warnings
==========

to

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.
==========

[Tom (Use chromium acct), 2016-08-17 23:02:32]

thomasanderson@google.com changed reviewers:
+ erg@chromium.org

[Tom (Use chromium acct), 2016-08-17 23:02:54]

Description was changed from

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.
==========

to

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.
==========

[commit-bot: I haz the power, 2016-08-17 23:46:49]

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

[commit-bot: I haz the power, 2016-08-17 23:46:50]

Dry run: This issue passed the CQ dry run.

[Tom (Use chromium acct), 2016-08-18 00:43:56]

Description was changed from

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.
==========

to

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.

TBR=erg@chromium.org
==========

[Tom (Use chromium acct), 2016-08-18 00:44:01]

The CQ bit was checked by thomasanderson@google.com

[commit-bot: I haz the power, 2016-08-18 00:44:35]

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, 2016-08-18 00:44:36]

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

[commit-bot: I haz the power, 2016-08-18 00:44:36]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Elliot Glaysher, 2016-08-18 17:10:24]

lgtm

[Tom (Use chromium acct), 2016-08-18 17:31:26]

The CQ bit was checked by thomasanderson@google.com

[commit-bot: I haz the power, 2016-08-18 17:32:25]

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, 2016-08-18 17:37:54]

Description was changed from

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.

TBR=erg@chromium.org
==========

to

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.

TBR=erg@chromium.org
==========

[commit-bot: I haz the power, 2016-08-18 17:37:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-18 17:44:05]

Description was changed from

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.

TBR=erg@chromium.org
==========

to

==========
Fix -Wsential warnings

For some reason, Wsentinel doesn't detect NULL as nullptr on some versions of
clang, so just change them to nullptr instead.

TBR=erg@chromium.org

Committed: https://crrev.com/adf40034f86ab2dea41bf9ee173585d332bb8178
Cr-Commit-Position: refs/heads/master@{#412878}
==========

[commit-bot: I haz the power, 2016-08-18 17:44:06]

Patchset 1 (id:??) landed as
https://crrev.com/adf40034f86ab2dea41bf9ee173585d332bb8178
Cr-Commit-Position: refs/heads/master@{#412878}