Move NavigatorHost interface to mandoline.

Move NavigatorHost interface to mandoline.

Also remove third_party\mojo_services\src\http_server which is unused.

BUG=479353
Committed: https://crrev.com/731d868b22da5daf27bdbbf60bcad7e994c6f036
Cr-Commit-Position: refs/heads/master@{#327153}

[jam, 2015-04-27 19:29:46]

jam@chromium.org changed reviewers:
+ sky@chromium.org

[sky, 2015-04-27 20:27:41]

Did you forget to git add mandoline/services?

[jam, 2015-04-27 21:39:13]

On 2015/04/27 20:27:41, sky wrote:
> Did you forget to git add mandoline/services?

yep, ptal

[sky, 2015-04-27 21:39:59]

LGTM

[jam, 2015-04-27 21:41:21]

The CQ bit was checked by jam@chromium.org

[commit-bot: I haz the power, 2015-04-27 21:41:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1109943002/20001

[commit-bot: I haz the power, 2015-04-27 22:12:28]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-04-27 22:13:19]

Patchset 2 (id:??) landed as
https://crrev.com/731d868b22da5daf27bdbbf60bcad7e994c6f036
Cr-Commit-Position: refs/heads/master@{#327153}