GetNetworkList() copies sa_family of ifa_addr to ifa_netmask if unset

BUG=325910
TEST=Confirmed NetUtilTest.GetNetworkList now passes in presence of OpenVPN tunnel.

Review URL: https://codereview.chromium.org/105653003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243675 0039d316-1c4b-4281-b951-d872f2087c98
Base: Rename File::error() to File::error_details()

BUG=322664
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/126453004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243676 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243675
SVN changes up to revision 243676