Remove unused headers after CL 609833003

Remove unused headers after CL 609833003

Committed: https://crrev.com/2b7431cd37d803334961c405d2408db97a4ab312
Cr-Commit-Position: refs/heads/master@{#300174}

[Jiang Jiang, 2014-10-09 12:05:15]

jiangj@opera.com changed reviewers:
+ erikchen@chromium.org

[erikchen, 2014-10-10 17:38:36]

lgtm

[Jiang Jiang, 2014-10-10 18:45:17]

The CQ bit was checked by jiangj@opera.com

[commit-bot: I haz the power, 2014-10-10 18:45:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/638383003/1

[commit-bot: I haz the power, 2014-10-10 18:54:09]

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

[commit-bot: I haz the power, 2014-10-10 18:54:10]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[erikchen, 2014-10-17 21:03:12]

erikchen@chromium.org changed reviewers:
+ avi@chromium.org

[erikchen, 2014-10-17 21:03:12]

avi: Looking for an OWNER review.

[Avi (use Gerrit), 2014-10-17 21:32:33]

lgtm

[erikchen, 2014-10-17 21:35:34]

The CQ bit was checked by erikchen@chromium.org

[commit-bot: I haz the power, 2014-10-17 21:37:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/638383003/1

[commit-bot: I haz the power, 2014-10-17 22:22:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-17 22:23:54]

Patchset 1 (id:??) landed as
https://crrev.com/2b7431cd37d803334961c405d2408db97a4ab312
Cr-Commit-Position: refs/heads/master@{#300174}