Replace aa->sky in mojo/html_viewer/OWNERS

Replace aa->sky in mojo/html_viewer/OWNERS

aa@ is no longer active on this project. sky@ is.

R=sky@chromium.org

Committed: https://crrev.com/fa962fe4beebb5cca19eced58dda1810f55b3c96
Cr-Commit-Position: refs/heads/master@{#321459}

[jamesr, 2015-03-16 22:21:42]

Dave, Scott - being in this file will result in getting a lot of miscellaneous
reviews for Blink API changes, some of which is pretty non-obvious if you aren't
familiar with how the systems interact.  Feel free to add me or redirect reviews
as needed.

[sky, 2015-03-16 22:22:34]

Ok, LGTM

[jamesr, 2015-03-19 22:11:54]

Dave - I haven't heard from you on this so I'll land with just sky@ to avoid
creating work for you.  If you think the world would be better with you in this
OWNERS file I'm not opposed.

[jamesr, 2015-03-19 22:12:35]

The CQ bit was checked by jamesr@chromium.org

[jamesr, 2015-03-19 22:12:35]

The patchset sent to the CQ was uploaded after l-g-t-m from sky@chromium.org
Link to the patchset: https://codereview.chromium.org/1018463003/#ps20001
(title: "just sky")

[commit-bot: I haz the power, 2015-03-19 22:12:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1018463003/20001

[commit-bot: I haz the power, 2015-03-19 22:54:50]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-19 22:55:16]

Patchset 2 (id:??) landed as
https://crrev.com/fa962fe4beebb5cca19eced58dda1810f55b3c96
Cr-Commit-Position: refs/heads/master@{#321459}