Fix some spelling mistakes in comments.

Fix some spelling mistakes in comments.

BUG=490498
Committed: https://crrev.com/74d76f3b71dd358d440ceeb35e970fceee9f6ccf
Cr-Commit-Position: refs/heads/master@{#330974}

[eroman, 2015-05-21 04:17:34]

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

[eroman, 2015-05-21 04:26:22]

Patchset #2 (id:20001) has been deleted

[mmenke, 2015-05-21 12:54:34]

LGTM

[eroman, 2015-05-21 14:35:21]

The CQ bit was checked by eroman@chromium.org

[commit-bot: I haz the power, 2015-05-21 14:35:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1155433002/1

[commit-bot: I haz the power, 2015-05-21 18:21:22]

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

[commit-bot: I haz the power, 2015-05-21 18:21:23]

Try jobs failed on following builders:
  android_clang_dbg_recipe on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_clang_d...)

[eroman, 2015-05-21 20:08:20]

The CQ bit was checked by eroman@chromium.org

[commit-bot: I haz the power, 2015-05-21 20:13:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1155433002/1

[commit-bot: I haz the power, 2015-05-21 20:45:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-21 20:46:39]

Patchset 1 (id:??) landed as
https://crrev.com/74d76f3b71dd358d440ceeb35e970fceee9f6ccf
Cr-Commit-Position: refs/heads/master@{#330974}