Switch Windows back to NSS.

Switch Windows back to NSS.

This reverts (the build config portions of)
https://codereview.chromium.org/776643003 which switched Windows to BoringSSL
from NSS. Apparently there's a problem in Syzygy, and releases are gated on
that, so there's not much use in keeping it on trunk in the meantime.

R=brettw@chromium.org
TBR=rsleevi@chromium.org

BUG=338884, 439214
Committed: https://crrev.com/8d7262b218684a4b83421e7eb9a366075718fcaa
Cr-Commit-Position: refs/heads/master@{#306928}

[davidben, 2014-12-04 22:01:24]

davidben@chromium.org changed reviewers:
+ brettw@chromium.org, rsleevi@chromium.org

[davidben, 2014-12-04 22:02:08]

TBR rsleevi and brettw.

I'll land this when try bots go green.

[brettw, 2014-12-04 22:18:24]

LGTM, sorry :(

[davidben, 2014-12-04 22:29:12]

The CQ bit was checked by davidben@chromium.org

[commit-bot: I haz the power, 2014-12-04 22:30:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/776413002/1

[commit-bot: I haz the power, 2014-12-04 23:23:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-04 23:23:39]

Patchset 1 (id:??) landed as
https://crrev.com/8d7262b218684a4b83421e7eb9a366075718fcaa
Cr-Commit-Position: refs/heads/master@{#306928}