Instrumenting NetworkChangeNotifierWin::GetCurrentConnectionType for jank

Instrumenting NetworkChangeNotifierWin::GetCurrentConnectionType for jank
We suspect that this method may be causing jankiness of QuicClientSession constructor

BUG=422516
Committed: https://crrev.com/7810214e0a59d622add492497b61f5fa70b69d78
Cr-Commit-Position: refs/heads/master@{#313427}

[vadimt, 2015-01-27 20:51:03]

vadimt@chromium.org changed reviewers:
+ rtenneti@chromium.org

[vadimt, 2015-01-27 20:51:04]

rtenneti@, please review

[ramant (doing other things), 2015-01-28 01:07:49]

lgtm

[ramant (doing other things), 2015-01-28 01:08:12]

Sorry for the delay. Was sick and had gone home.

[ramant (doing other things), 2015-01-28 01:08:17]

The CQ bit was checked by rtenneti@chromium.org

[commit-bot: I haz the power, 2015-01-28 01:09:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/879943003/1

[commit-bot: I haz the power, 2015-01-28 04:09:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-28 04:11:11]

Patchset 1 (id:??) landed as
https://crrev.com/7810214e0a59d622add492497b61f5fa70b69d78
Cr-Commit-Position: refs/heads/master@{#313427}