Remove Hangout Remote Desktop integration code from the webapp.

Remove Hangout Remote Desktop integration code from the webapp.

Cleaning the webapp as the Hangout Remote Desktop service has discontinued.

BUG=463322
Committed: https://crrev.com/96024224b1f0d9c9d824a76eefbd8d33d0ce517b
Cr-Commit-Position: refs/heads/master@{#319009}

[kelvinp, 2015-03-03 23:36:44]

kelvinp@chromium.org changed reviewers:
+ dcaiafa@chromium.org

[kelvinp, 2015-03-03 23:36:44]

PTAL

[kelvinp, 2015-03-03 23:36:57]

kelvinp@chromium.org changed reviewers:
+ garykac@chromium.org

[dcaiafa, 2015-03-03 23:50:23]

lgtm. Thanks!

[kelvinp, 2015-03-04 02:10:24]

The CQ bit was checked by kelvinp@chromium.org

[kelvinp, 2015-03-04 02:10:24]

The patchset sent to the CQ was uploaded after l-g-t-m from dcaiafa@chromium.org
Link to the patchset: https://codereview.chromium.org/973333002/#ps20001 (title:
"Rebase + manifest changes")

[commit-bot: I haz the power, 2015-03-04 02:12:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/973333002/20001

[commit-bot: I haz the power, 2015-03-04 02:55:12]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-04 02:55:41]

Patchset 2 (id:??) landed as
https://crrev.com/96024224b1f0d9c9d824a76eefbd8d33d0ce517b
Cr-Commit-Position: refs/heads/master@{#319009}