Fix a few spelling errors in comments.

Fix a few spelling errors in comments.

BUG=none
TBR=brettw

Committed: https://crrev.com/3c651d073670eb361039813aa94951afc39cd560
Cr-Commit-Position: refs/heads/master@{#327383}

[Nico, 2015-04-28 18:44:36]

thakis@chromium.org changed reviewers:
+ lazyboy@chromium.org

[Nico, 2015-04-28 18:44:36]

The .js file change isn't a comment change, but it shouldn't have an effect in
practice, right?

[lazyboy, 2015-04-28 18:55:50]

LGTM
Yes, that should be fine.

[Nico, 2015-04-28 18:56:58]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-04-28 18:57:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1114623003/1

[commit-bot: I haz the power, 2015-04-28 21:18:31]

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

[commit-bot: I haz the power, 2015-04-28 21:18:32]

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

[Nico, 2015-04-28 21:21:26]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-04-28 21:22:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1114623003/1

[commit-bot: I haz the power, 2015-04-28 22:47:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-28 22:48:16]

Patchset 1 (id:??) landed as
https://crrev.com/3c651d073670eb361039813aa94951afc39cd560
Cr-Commit-Position: refs/heads/master@{#327383}