Remove unused references to included header files

cc: Remove unused references to header files

Clean up some unused header file includes in cc

Committed: https://crrev.com/1b10eb63d8441ba5ab18037c916e13df5826bb07
Cr-Commit-Position: refs/heads/master@{#320239}

[huayong.xu, 2015-03-10 02:55:16]

huayong.xu@samsung.com changed reviewers:
+ jamesr@chromium.org

[huayong.xu, 2015-03-10 02:55:17]

PTAL

[danakj, 2015-03-11 17:25:41]

danakj@chromium.org changed reviewers:
+ danakj@chromium.org

[danakj, 2015-03-11 17:25:42]

LGTM

[danakj, 2015-03-11 17:26:01]

Since there's no bug for this CL, i removed the BUG= line.

[danakj, 2015-03-11 17:26:15]

The CQ bit was checked by danakj@chromium.org

[commit-bot: I haz the power, 2015-03-11 17:28:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/994833002/1

[huayong.xu, 2015-03-12 05:57:04]

The CQ bit was checked by huayong.xu@samsung.com

[commit-bot: I haz the power, 2015-03-12 05:57:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/994833002/1

[huayong.xu, 2015-03-12 05:57:41]

The CQ bit was unchecked by huayong.xu@samsung.com

[commit-bot: I haz the power, 2015-03-12 05:57:48]

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

[commit-bot: I haz the power, 2015-03-12 05:57:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-12 05:58:39]

Patchset 1 (id:??) landed as
https://crrev.com/1b10eb63d8441ba5ab18037c916e13df5826bb07
Cr-Commit-Position: refs/heads/master@{#320239}