Move NetworkChangeNotifier initialization after MessageLoop creation.

Move NetworkChangeNotifier initialization after MessageLoop creation.

NetworkChangeNotifier was moved to HostProcessMain in crrev.com/314165.
On windows it must be initialized after MessageLoop for the calling
thread is created, so the host was failing to start.

Committed: https://crrev.com/1a435b6d09379ed7f120748f73d5599f37a03ab8
Cr-Commit-Position: refs/heads/master@{#315159}

[Sergey Ulanov, 2015-02-07 01:00:09]

sergeyu@chromium.org changed reviewers:
+ weitaosu@chromium.org

[weitao, 2015-02-07 01:29:21]

On 2015/02/07 01:00:10, Sergey Ulanov wrote:

LGTM

[Sergey Ulanov, 2015-02-07 01:29:58]

The CQ bit was checked by sergeyu@chromium.org

[commit-bot: I haz the power, 2015-02-07 01:30:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/902303002/1

[commit-bot: I haz the power, 2015-02-07 02:01:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-07 02:02:28]

Patchset 1 (id:??) landed as
https://crrev.com/1a435b6d09379ed7f120748f73d5599f37a03ab8
Cr-Commit-Position: refs/heads/master@{#315159}