Don't do dynamic IPv6 probe on Windows
Don't do dynamic IPv6 probe on Windows

On Windows, the OS does not appear to properly support the
call to list interfaces.  As a result, it is only returning
IPv4 interfaces, even if there are valid IPv6 interfaces.
This in turned caused IPv6 to be disabled on windows.
This patch tentatively allows IPv6 rather than performing
probe.

BUG=40851
r=wtc
Review URL: http://codereview.chromium.org/1564020

git-svn-id: http://src.chromium.org/svn/trunk/src@44031 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a95258d4da6536827eadd1079bcdfe5761e4764a
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser