Revert 224617 "Revert 195406 "[net/dns] Test IPv6 support via UD..."
Revert 224617 "Revert 195406 "[net/dns] Test IPv6 support via UD..."

> Revert 195406 "[net/dns] Test IPv6 support via UDP connect"
> 
> Breaks DirectAccess on win. Fixed in 223595.
> 
> BUG=259792
> 
> > [net/dns] Test IPv6 support via UDP connect
> > 
> > After this CL, the effective address family will be determined by
> > the UDP connect test rather than the last interface enumeration probe.
> > 
> > BUG=223876
> > 
> > Review URL: https://codereview.chromium.org/14161008
> 
> TBR=szym@chromium.org
> 
> Review URL: https://codereview.chromium.org/23478045

TBR=szym@chromium.org

Review URL: https://codereview.chromium.org/24350003

git-svn-id: 986b6b4560a3241247e958d20c9d693db6a01511@224663 0039d316-1c4b-4281-b951-d872f2087c98

patrickm/chromium.src,patrickm/chromium.src,ondra-novak/chromium.src,patrickm/chromium.src,patrickm/chromium.src,littlstar/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,littlstar/chromium.src,patrickm/chromium.src,ondra-novak/chromium.src,ondra-novak/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,ondra-novak/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,littlstar/chromium.src,patrickm/chromium.src,littlstar/chromium.src,patrickm/chromium.src,ondra-novak/chromium.src,littlstar/chromium.src,patrickm/chromium.src,patrickm/chromium.src,ondra-novak/chromium.src