Make GetNetworkList on Windows filter out 'down' interfaces, as on POSIX.
Make GetNetworkList on Windows filter out 'down' interfaces, as on POSIX.

The chrome_frame_net_tests wish to identify a non-loopback adapter to use during testing. Calling GetNetworkList is very convenient but currently on Windows it returns disconnected adapters without providing a means to detect the state of adapters. The POSIX version only returns connected adapters; this CL ports that behaviour to Windows.

BUG=114369
TEST=existing tests in net_unittests


Review URL: http://codereview.chromium.org/9419053

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@122883 0039d316-1c4b-4281-b951-d872f2087c98

gavinp/chromium,ropik/chromium,adobe/chromium,adobe/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,gavinp/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,adobe/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium