WiFiServiceImpl (Windows): Fixed wrong authentication type with WEP-PSK.

WiFiServiceImpl (Windows): Fixed wrong authentication type with WEP-PSK.

Previously the "authentication" field was set to "open" when using
WEP-PSK security, which seems to be a copy-paste error. It should be set
to "WEP".

BUG=506445, 505319
Committed: https://crrev.com/f38b0349ac26baf2d936183df96c3c1a4e6d60f1
Cr-Commit-Position: refs/heads/master@{#337561}

[Matt Giuca, 2015-07-02 05:43:42]

mgiuca@chromium.org changed reviewers:
+ mef@chromium.org

[mef, 2015-07-06 15:49:33]

lgtm

[Matt Giuca, 2015-07-07 03:02:03]

The CQ bit was checked by mgiuca@chromium.org

[commit-bot: I haz the power, 2015-07-07 03:02:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1212173003/1

[commit-bot: I haz the power, 2015-07-07 04:39:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-07 04:40:38]

Patchset 1 (id:??) landed as
https://crrev.com/f38b0349ac26baf2d936183df96c3c1a4e6d60f1
Cr-Commit-Position: refs/heads/master@{#337561}