Chromecast: moves ConnectivityChecker to the IO thread.

Chromecast: moves ConnectivityChecker to the IO thread.

R=derekjchow@chromium.org,byungchul@chromium.org,lcwu@chromium.org
BUG=476713
Committed: https://crrev.com/195e961645fb951a64213a2b4233006f27e88272
Cr-Commit-Position: refs/heads/master@{#325446}

[derekjchow1, 2015-04-16 00:42:28]

On 2015/04/16 00:41:31, gunsch wrote:

LGTM

[gunsch, 2015-04-16 00:45:45]

The CQ bit was checked by gunsch@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-04-16 00:46:09]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1058143004/1

[byungchul, 2015-04-16 00:51:27]

lgtm

[commit-bot: I haz the power, 2015-04-16 01:05:54]

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

[commit-bot: I haz the power, 2015-04-16 01:05:55]

This issue passed the CQ dry run.

[lcwu1, 2015-04-16 06:43:34]

lgtm

[gunsch, 2015-04-16 15:10:57]

The CQ bit was checked by gunsch@chromium.org

[commit-bot: I haz the power, 2015-04-16 15:11:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1058143004/1

[commit-bot: I haz the power, 2015-04-16 15:11:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-16 15:12:48]

Patchset 1 (id:??) landed as
https://crrev.com/195e961645fb951a64213a2b4233006f27e88272
Cr-Commit-Position: refs/heads/master@{#325446}