Revert 113120 - this CL broke then chromeos clang bot:

Revert 113120 - this CL broke then chromeos clang bot:
http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20Clang%20%28ChromeOS%20dbg%29/builds/4017/steps/compile/logs/stdio

Add ONC VPN support for OpenVPN and L2TP/IPsec VPNs

Also simplifies some of the parsing code, adds type validation, brings
the WiFi security parsing up to spec, and improves the unit tests for
wifi so that they all verify the property_map_ fields (the only ones
actually used to configure the network).  Also fixed a general parser
problem where certificates wouldn't be parsed if network configs were.

BUG=chromium-os:23476
chromium-os:23477
TEST=manual import of ONC file with openvpn network, unit_tests

Review URL: http://codereview.chromium.org/8759014

TBR=kmixter@chromium.org
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=113136