Add an OWNERS file to net.

R=willchan
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/6368010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72008 0039d316-1c4b-4281-b951-d872f2087c98

net/OWNERS

+cbentzel@chromium.org
+eroman@chromium.org
+lzheng@chromium.org
+mbelshe@chromium.org
+mmenke@chromium.org
+rdsmith@chromium.org
+rvargas@chromium.org
+vandebo@chromium.org
+willchan@chromium.org
+wtc@chromium.org